2026-06-25 09:29:40 +00:00
29 changed files with 1077 additions and 3151 deletions
@@ -12,8 +12,8 @@ dispatcher and the `crucible-<name>` binaries.
 ## What this repo owns / does not own

 Owns: build/extract/validate/compare pipeline, ERF/HAK packing, topdata 2da/tlk
-compilation, wiki rendering/deploy, depot blob verify, music conversion,
-changelog. Does **not** own authored game content (that is `sow-module` /
+compilation, wiki rendering/deploy, depot blob verify, changelog. Does **not**
+own authored game content (that is `sow-module` /
 `sow-topdata` / `sow-assets-manifest`) or any production deploy authority (that
 is `sow-platform`).

@@ -29,7 +29,7 @@ command lands is mapped in [`docs/command-surface.md`](docs/command-surface.md).

 ## Status (cutover performed)

-The internal `app`/`pipeline`/`project`/`erf`/`gff`/`topdata`/`music`/`changelog`/
+The internal `app`/`pipeline`/`project`/`erf`/`gff`/`topdata`/`changelog`/
 `validator` packages from `gitea/sow-tools` have been migrated into this tree, and
 the `module`, `topdata`, `hak`, and `wiki` builders now **delegate to the migrated
 `nwn-tool` command surface** (mapped in
@@ -49,7 +49,7 @@ which downloads the latest released `crucible` for your OS and runs it:
 ```bash
 ./crucible            # interactive menu (pick a command)
 ./crucible module build
-./crucible topdata validate-topdata
+./crucible topdata validate
 ```

 Windows (PowerShell):
@@ -62,15 +62,12 @@ The binary is cached under `~/.cache/crucible/<version>/` (`%LOCALAPPDATA%\cruci
 on Windows); `--repo-local` caches inside the repo instead. Private releases:
 set `CRUCIBLE_TOKEN` or write the token to `~/.config/crucible/token`.

-Only the **music** builder needs `ffmpeg`; everything else has zero dependencies.
-If you run a music command without it, Crucible prints a per-OS install hint.
-
 ## Develop

 Self-contained (D8) — a host with only Nix can run everything:

 ```bash
-nix develop            # Go + ffmpeg + shellcheck + yamllint + make
+nix develop            # Go + shellcheck + yamllint + make
 make check             # go vet + go test + shellcheck + yamllint
 make build             # build every cmd/* into ./bin (gitignored)
 make smoke             # build + assert the fail-closed contract
@@ -6,10 +6,6 @@
 # and ships them on a static base. The `crucible` dispatcher is the entrypoint;
 # consumer CI can also call the standalone crucible-<name> binaries by path.
 #
-# NOTE: the internal pipeline is migrated and the music conversion path is wired,
-# so the runtime stage is debian-slim with ffmpeg on PATH (BMU encode/decode).
-# See docs/migration-from-nwn-tool.md.
-
 FROM golang:1.26-alpine AS build
 WORKDIR /src
 RUN apk add --no-cache git
@@ -30,11 +26,10 @@ RUN set -eux; \
    done

 FROM debian:12-slim
-# ffmpeg: the migrated music pipeline shells out to it for BMU conversion.
 # ca-certificates: builders fetch published manifests over HTTPS.
 RUN set -eux; \
    apt-get update; \
-    apt-get install -y --no-install-recommends ffmpeg ca-certificates; \
+    apt-get install -y --no-install-recommends ca-certificates; \
    rm -rf /var/lib/apt/lists/*; \
    useradd --system --create-home --uid 65532 nonroot
 COPY --from=build /out/ /usr/local/bin/
@@ -1,67 +1,77 @@
 # Crucible command surface

-Crucible re-homes the single `nwn-tool` (a.k.a. `sow-toolkit`) command surface
-into five builders plus a dispatcher (D11). This table maps every legacy command
-to its Crucible home. It is the migration contract — keep it in sync with
-`internal/dispatch.Registry`.
+`internal/dispatch.Registry` is the single source of truth for Crucible's
+builders, visible commands, descriptions, help, and hidden compatibility
+aliases.

-## Builders
+## Visible commands

-| Builder            | Legacy `nwn-tool` commands subsumed                                                   |
-| ------------------ | ------------------------------------------------------------------------------------- |
-| `crucible-module`  | `build`, `build-module`, `extract`, `validate`, `compare`, `apply-hak-manifest`†      |
-| `crucible-topdata` | `validate-topdata`, `build-topdata`, `build-top-package`, `compare-topdata`, `convert-topdata` |
-| `crucible-hak`     | `build-haks`, `apply-hak-manifest`                                                    |
-| `crucible-wiki`    | `build-wiki`, `deploy-wiki`                                                            |
-| `crucible-depot`   | (new) depot blob verify/move — was shell `mc`/S3 in `sow-assets-manifest`             |
+| Builder | Command | Purpose |
+| --- | --- | --- |
+| `hak` | `build` | Build configured HAK archives and their manifest. |
+| `hak` | `manifest` | Apply a generated HAK list to module source. |
+| `module` | `build` | Build the module and configured project outputs. |
+| `module` | `extract` | Extract built archives into configured source trees. |
+| `module` | `validate` | Validate project layout, config, and source inventory. |
+| `module` | `compare` | Compare source content with built archives. |
+| `module` | `manifest` | Apply a generated HAK list to module source. |
+| `topdata` | `validate` | Validate topdata source and canonical JSON compatibility. |
+| `topdata` | `build` | Compile topdata and refresh the configured package. |
+| `topdata` | `package` | Package cached outputs into HAK and TLK files. |
+| `topdata` | `compare` | Compare current output with a fresh native build. |
+| `topdata` | `convert` | Convert between 2DA and native JSON/module formats. |
+| `wiki` | `build` | Render wiki page drafts from compiled topdata. |
+| `wiki` | `deploy` | Deploy generated wiki pages to NodeBB. |

-† `apply-hak-manifest` is HAK-list maintenance on a module; it is reachable from
-both `crucible-module` and `crucible-hak`. Canonical home is `crucible-hak`.
+`crucible-depot` remains registered but unwired. It fails closed with exit `70`
+and never emits placeholder artifacts.

-## Folded / global commands
+## Hidden compatibility aliases

-These legacy commands are **not** top-level builders:
+Existing scripts may continue using these names indefinitely. They are accepted
+but omitted from routine help and the interactive menu:

- `music *` (`list-datasets`, `scan`, `build`, `credits`, `validate`, `manifest`,
-  `normalize`) → folds into the **module/hak build pipeline** (music BMUs are
-  packed into HAKs at build time). Exposed as `crucible-module music ...` /
-  `crucible-hak music ...`. Needs `ffmpeg` at runtime (in the image).
- `config *` (`validate`, `effective`, `inspect`, `explain`, `sources`) → a
-  **global** concern shared by every builder; exposed as the global
-  `crucible config ...`, not its own binary.
- `build-changelog` → release tooling; exposed as the global `crucible changelog`
-  rather than a content builder.
+| Builder | Hidden alias | Implementation |
+| --- | --- | --- |
+| `hak` | `build-haks` | `build-haks` |
+| `hak` | `apply-hak-manifest` | `apply-hak-manifest` |
+| `module` | `build-module` | module-only `build-module` |
+| `module` | `apply-hak-manifest` | `apply-hak-manifest` |
+| `topdata` | `validate-topdata` | `validate-topdata` |
+| `topdata` | `build-topdata` | `build-topdata` |
+| `topdata` | `build-top-package` | `build-top-package` |
+| `topdata` | `compare-topdata` | `compare-topdata` |
+| `topdata` | `convert-topdata` | `convert-topdata` |
+| `wiki` | `build-wiki` | `build-wiki` |
+| `wiki` | `deploy-wiki` | `deploy-wiki` |

-## Global commands (implemented)
+`module build-module` deliberately retains its narrower module-only behavior;
+it is not redirected to the broader `module build`.
+
+## Global commands

 ```text
 crucible help | -h          usage + builder list
-crucible version | -V       build version (git sha via -ldflags)
-crucible list               builders, one per line: name<TAB>bin<TAB>summary
-crucible config [args]      -> legacy `config` command group
-crucible changelog [args]   -> legacy `build-changelog`
+crucible version | -V       build version
+crucible list               name<TAB>binary<TAB>summary
+crucible config [args]      inspect and validate effective configuration
+crucible changelog [args]   generate a release changelog
 ```

-`crucible list` is machine-readable so CI can enumerate builders without parsing
-help text.
-
-## HAK builder source modes
+## HAK build options

 ```text
-build-haks [--hak <hak-name> ...] [--archive <archive-name> ...]
-  [--source-manifest <path>] [--content-addressed-root <path>]
-  [--plan-only] [--skip-music] [--music-dataset <id> ...]
+crucible hak build
+  [--hak <hak-name> ...]
+  [--archive <archive-name> ...]
+  [--source-manifest <path>]
+  [--content-addressed-root <path>]
+  [--plan-only]
  [--quiet|--verbose|--debug]
 ```

 When a source manifest contains `asset_sources`, pass
-`--content-addressed-root <directory>` (or
-`--content-addressed-root=<directory>`). Crucible resolves each declared SHA-256
+`--content-addressed-root <directory>`. Crucible resolves each declared SHA-256
 under `sha256/<first-two>/<next-two>/<full-sha256>` and verifies streamed bytes
-while writing the selected HAK archives. Source manifests without
-`asset_sources` continue to use the configured assets tree.
-
-## Global flags (planned, at wiring time)
-
-`--quiet`, `--verbose`, `--debug` (the legacy verbosity model), passed after the
-builder name, e.g. `crucible topdata build-topdata --verbose`.
+while writing selected HAK archives. Authored `.bmu` files are ordinary assets
+and require no conversion pipeline.
@@ -27,7 +27,7 @@ checklist is kept as the record of what was done.
 ## Cutover steps

 1. **Move the internal packages.** Bring `internal/{app,pipeline,project,erf,
-   gff,topdata,music,changelog,validator}` from `gitea/sow-tools` into this repo.
+   gff,topdata,changelog,validator}` from `gitea/sow-tools` into this repo.
   Re-home `internal/app` command wiring behind `internal/dispatch` instead of
   the old flag parser in `cmd/nwn-tool`.
 2. **Restore dependencies.** Add `golang.org/x/text` and `gopkg.in/yaml.v3` back
@@ -43,10 +43,7 @@ checklist is kept as the record of what was done.
   artifacts and image layers only.
 6. **Carry the determinism test.** Port
   `TestBuildNativeKeepsGeneratedIDsStableAcrossRepeatedBuilds` and keep it green.
-7. **Runtime base for music.** If music conversion is wired, switch the final
-   Docker stage from `distroless/static` to a debian-slim base that includes
-   `ffmpeg`.
-8. **Update `make smoke`.** Once a builder is wired, change the smoke
+7. **Update `make smoke`.** Once a builder is wired, change the smoke
   expectation for it from exit `70` to a real success path.

 ## Wrapper contract carried over
@@ -0,0 +1,346 @@
+# Crucible Command Surface Cleanup Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use
+> `superpowers:subagent-driven-development` or
+> `superpowers:executing-plans` to implement this plan task-by-task. Steps use
+> checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Replace repetitive Crucible command names with a descriptive,
+registry-driven public surface, retain long names as hidden aliases, and remove
+the unused music conversion pipeline without affecting authored `.bmu` assets.
+
+**Architecture:** `internal/dispatch.Registry` gains explicit command records
+that drive lookup, help, and the interactive menu while translating to unchanged
+`internal/app` implementation names. The unused music subsystem is removed
+through its app, pipeline, project-config, validator, packaging, and consumer
+boundaries. The two active `sow-assets-manifest` call sites are decoupled in the
+same worktree session.
+
+**Tech Stack:** Go 1.26, Go tests, Nix flakes, Dockerfile, Bash/Bats.
+
+## Global Constraints
+
+- Never commit or push.
+- Do not touch secrets or `.sops` data.
+- Keep `internal/dispatch.Registry` synchronized with
+  `docs/command-surface.md`.
+- Preserve deterministic artifact behavior.
+- Preserve every existing long command as a hidden alias except all music
+  commands, which are removed.
+- Preserve `.bmu` as an ordinary HAK asset.
+- Do not retain generated binaries or build output.
+
+---
+
+### Task 1: Registry-driven canonical commands and hidden aliases
+
+**Files:**
+
+- Modify: `internal/dispatch/dispatch.go`
+- Modify: `internal/dispatch/dispatch_test.go`
+
+**Interfaces:**
+
+- Produces a `Command` record owned by each `Builder`.
+- Produces lookup that returns the command record and exact app target.
+- Preserves `Builder.Legacy` only if required by migration tests; otherwise
+  replaces it with command-derived compatibility metadata.
+
+- [ ] Add failing tests covering the visible command table:
+  `hak build/manifest`, `module build/extract/validate/compare/manifest`,
+  `topdata validate/build/package/compare/convert`, and `wiki build/deploy`.
+- [ ] Add failing tests proving long aliases resolve to the same app target and
+  that `module build-module` resolves to `build-module`, not `build`.
+- [ ] Add a failing test proving all music commands are rejected.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/dispatch -run 'TestCanonical|TestHidden|TestMusic' -v
+  ```
+
+  Expected: failures caused by the old registry shape and exposed music
+  commands.
+
+- [ ] Introduce command records with fields equivalent to:
+
+  ```go
+  type Command struct {
+      Name        string
+      Summary     string
+      AppCommand  string
+      Usage       string
+      Options     []string
+      HiddenAlias []string
+  }
+  ```
+
+  Use the minimum final field names that keep lookup, menu, and help readable.
+
+- [ ] Replace builder-level subcommand acceptance with command lookup. Translate
+  canonical and hidden aliases to `AppCommand` before calling `app.Run`.
+- [ ] Define the approved command table and remove dispatcher music entries.
+- [ ] Re-run the focused dispatch tests and the full dispatch package:
+
+  ```bash
+  nix develop --command go test ./internal/dispatch -v
+  ```
+
+  Expected: pass.
+
+### Task 2: Descriptive menu and command-specific help
+
+**Files:**
+
+- Modify: `internal/menu/menu.go`
+- Modify: `internal/menu/menu_test.go`
+- Modify: `internal/dispatch/dispatch.go`
+- Modify: `internal/dispatch/dispatch_test.go`
+
+**Interfaces:**
+
+- `menu.Item` carries display label, summary, dispatcher args, usage, and option
+  lines.
+- `menu.Select` returns selected dispatcher args plus entered arguments.
+- Dispatcher command help uses the same registry guidance as the menu.
+
+- [ ] Add failing menu tests proving descriptions start at one aligned column
+  for labels of different lengths and hidden aliases never enter `menuItems()`.
+- [ ] Add a failing test selecting a command and asserting output contains its
+  usage, option guidance, and
+  `arguments (press Enter to use defaults):`.
+- [ ] Add failing dispatcher tests proving
+  `crucible topdata build --help` returns `0`, prints canonical usage/options,
+  and does not delegate into project loading.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/menu ./internal/dispatch -run 'Test.*Menu|Test.*Help' -v
+  ```
+
+  Expected: fail against the current fixed-width menu and builder-only help.
+
+- [ ] Compute menu label width from visible items and render descriptions with
+  that width.
+- [ ] Print command guidance immediately after a selection and before reading
+  optional arguments.
+- [ ] Add command-level help handling before app delegation.
+- [ ] Ensure builder help lists only canonical names and their summaries.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/menu ./internal/dispatch -v
+  ```
+
+  Expected: pass.
+
+### Task 3: Remove music from HAK app and pipeline
+
+**Files:**
+
+- Delete: `internal/pipeline/music.go`
+- Modify: `internal/pipeline/build.go`
+- Modify: `internal/pipeline/pipeline_test.go`
+- Modify: `internal/app/app.go`
+- Modify: `internal/app/app_test.go`
+- Delete: `internal/music/config.go`
+- Delete: `internal/music/credits.go`
+- Delete: `internal/music/metadata.go`
+- Delete: `internal/music/music.go`
+- Delete: `internal/music/music_test.go`
+- Delete: `internal/music/naming.go`
+
+**Interfaces:**
+
+- `pipeline.BuildHAKOptions` retains only HAK selection, source-manifest,
+  content-addressed-root, and progress controls.
+- `pipeline.BuildResult` retains artifact fields unrelated to generated music
+  credits.
+- `build-haks` accepts no music-specific flags.
+
+- [ ] Replace music pipeline tests with a failing contract test that builds a
+  HAK containing a pre-authored `.bmu` and proves the file appears in the
+  manifest/archive without conversion setup.
+- [ ] Add failing parser tests proving `--skip-music` and `--music-dataset`
+  return unknown-argument errors and help does not mention them.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/app ./internal/pipeline -run 'Test.*Music|Test.*BMU|TestParseBuildHAK' -v
+  ```
+
+  Expected: at least the removed-flag assertions fail.
+
+- [ ] Remove the app `music` command, argument parser, emitters, music HAK
+  options, and credits console output.
+- [ ] Remove music fields from `BuildHAKOptions` and `BuildResult`.
+- [ ] Remove preparation/cleanup calls from HAK builds so asset collection reads
+  authored resources directly.
+- [ ] Delete the music implementation packages and obsolete conversion tests.
+- [ ] Keep `.bmu` handling in ordinary ERF/resource and asset collection paths.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/app ./internal/pipeline -v
+  ```
+
+  Expected: pass.
+
+### Task 4: Remove music configuration and validation
+
+**Files:**
+
+- Modify: `internal/project/project.go`
+- Modify: `internal/project/effective.go`
+- Modify: `internal/project/project_test.go`
+- Modify: `internal/validator/validator.go`
+- Modify: `internal/validator/validator_test.go`
+
+**Interfaces:**
+
+- `project.Config` and `project.EffectiveConfig` contain no music section.
+- Project scanning uses only configured inventory extensions.
+- `.bmu` and `.wav` remain default asset extensions; `.mp3` and `.ogg` do not.
+
+- [ ] Add or adjust failing project tests asserting default extensions include
+  `.bmu` and `.wav` but exclude `.mp3` and `.ogg`.
+- [ ] Add a failing strict-decoder test proving a top-level `music:` field is
+  rejected as unknown.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/project ./internal/validator -run 'Test.*Music|Test.*AssetExtension|Test.*BMU' -v
+  ```
+
+  Expected: fail while music config is still accepted.
+
+- [ ] Remove music config types, defaults, normalization, validation, accessors,
+  effective config, provenance defaults, and environment overrides.
+- [ ] Simplify `Project.Scan` to accept assets solely from
+  `effective.Inventory.AssetExtensions`.
+- [ ] Remove validator logic that exempts conversion source files.
+- [ ] Remove conversion-only `.mp3` and `.ogg` from default asset extensions;
+  retain `.bmu` and `.wav`.
+- [ ] Remove obsolete music-focused project and validator tests.
+- [ ] Run:
+
+  ```bash
+  nix develop --command go test ./internal/project ./internal/validator -v
+  ```
+
+  Expected: pass.
+
+### Task 5: Remove ffmpeg packaging and stale documentation
+
+**Files:**
+
+- Modify: `flake.nix`
+- Modify: `docker/Dockerfile`
+- Modify: `wrappers/crucible.sh`
+- Modify: `README.md`
+- Modify: `AGENTS.md`
+- Modify: `docs/command-surface.md`
+- Modify: `docs/migration-from-nwn-tool.md`
+
+**Interfaces:**
+
+- Nix development shell and image no longer contain ffmpeg.
+- Docker runtime contains only certificates and the non-root runtime support
+  needed by current builders.
+- User docs advertise canonical short commands.
+
+- [ ] Add a shell verification that fails while active packaging still mentions
+  ffmpeg or removed command names:
+
+  ```bash
+  ! rg -n 'ffmpeg|ffprobe|skip-music|music-dataset|module music|hak music' \
+    flake.nix docker wrappers README.md AGENTS.md docs/command-surface.md
+  ```
+
+- [ ] Remove `pkgs.ffmpeg-headless` and `ffmpeg` from Nix image/dev-shell
+  contents and update comments.
+- [ ] Return the Docker runtime to a minimal base without ffmpeg while retaining
+  CA certificates and non-root execution.
+- [ ] Remove the wrapper's `ffmpeg-free` wording.
+- [ ] Rewrite command-surface documentation around canonical names and a
+  concise hidden-alias compatibility section.
+- [ ] Update README examples and ownership/status prose.
+- [ ] Re-run the search. Expected: no matches in active files.
+
+### Task 6: Decouple active consumer scripts
+
+**Files in `../sow-assets-manifest`:**
+
+- Modify: `scripts/pack-haks.sh`
+- Modify: `scripts/build-local-haks.sh`
+- Modify: `tests/pack-haks.bats`
+- Modify only directly related active comments/tests if a focused test proves
+  they require adjustment.
+
+**Interfaces:**
+
+- Both scripts call the hidden-compatible `hak build-haks` or canonical
+  `hak build` without `--skip-music`.
+
+- [ ] Read `../sow-assets-manifest/AGENTS.md` before editing.
+- [ ] Add or adjust a focused test to reject `--skip-music` in generated
+  Crucible invocations.
+- [ ] Run the focused test and confirm it fails while the flag is present.
+- [ ] Remove `--skip-music` and its lockstep comments from both scripts.
+- [ ] Update the HAK parser test invocation to omit the removed flag.
+- [ ] Run:
+
+  ```bash
+  cd ../sow-assets-manifest
+  nix develop --command bats tests/pack-haks.bats
+  ```
+
+  Expected: pass.
+
+### Task 7: Full verification and scratchpad cleanup
+
+**Files:**
+
+- Modify: `../SCRATCHPAD.md`
+- Do not retain: `bin/`, `.cache/go-build/`, result symlinks, image tarballs, or
+  other generated outputs.
+
+- [ ] Run formatting:
+
+  ```bash
+  nix develop --command gofmt -w internal/app internal/dispatch internal/menu internal/pipeline internal/project internal/validator
+  ```
+
+- [ ] Run full repository checks:
+
+  ```bash
+  nix develop --command make check
+  make build
+  make smoke
+  ```
+
+- [ ] Run focused consumer verification from Task 6.
+- [ ] Verify deleted pipeline identifiers are absent from active code:
+
+  ```bash
+  rg -n 'BuildMusic|CreditsSummary|MusicDataset|skip-music|music-dataset|ffmpeg|ffprobe' \
+    --glob '!docs/superpowers/**' .
+  ```
+
+  Expected: no matches.
+
+- [ ] Verify active command docs/examples do not advertise long names:
+
+  ```bash
+  rg -n 'topdata (validate-topdata|build-topdata|build-top-package|compare-topdata|convert-topdata)|wiki (build-wiki|deploy-wiki)|hak (build-haks|apply-hak-manifest)' \
+    README.md docs/command-surface.md
+  ```
+
+  Expected: matches only inside the explicitly labeled hidden-alias
+  compatibility section.
+
+- [ ] Inspect `git diff --check`, `git status --short`, and both repository
+  diffs. Remove only generated files created by this work.
+- [ ] Remove the completed “Simplify crucible commands” to-do and the full
+  “Crucible commands issue” section from `../SCRATCHPAD.md`; do not archive it.
+- [ ] Record exact verification commands and outcomes in the final handoff.
+
@@ -0,0 +1,147 @@
+# Crucible Command Surface Cleanup Design
+
+**Date:** 2026-06-25  
+**Status:** Approved  
+**Scope:** `sow-tools`, with the two active `sow-assets-manifest` call sites
+updated in lockstep
+
+## Problem
+
+Crucible exposes migrated `nwn-tool` implementation names directly. Several
+public commands repeat their builder name (`topdata build-topdata`,
+`wiki build-wiki`), the interactive menu repeats builder-level descriptions
+instead of explaining each action, and selected commands only prompt for
+unexplained "extra args".
+
+The registry also exposes a migrated music-conversion subsystem that is not part
+of the current project workflow. Live HAK builds explicitly bypass it with
+`--skip-music`; authored `.bmu` files are already packed as ordinary assets.
+
+## Decisions
+
+### Canonical command names
+
+The visible command surface is:
+
+| Builder | Visible commands |
+| --- | --- |
+| `hak` | `build`, `manifest` |
+| `module` | `build`, `extract`, `validate`, `compare`, `manifest` |
+| `topdata` | `validate`, `build`, `package`, `compare`, `convert` |
+| `wiki` | `build`, `deploy` |
+
+The dispatcher translates these names to the existing `internal/app`
+implementation commands. The app implementation names do not need to be
+renamed.
+
+### Hidden compatibility aliases
+
+Existing long names remain callable indefinitely but are omitted from the
+interactive menu and routine builder help:
+
+- `hak build-haks`
+- `hak apply-hak-manifest`
+- `module build-module`
+- `module apply-hak-manifest`
+- `topdata validate-topdata`
+- `topdata build-topdata`
+- `topdata build-top-package`
+- `topdata compare-topdata`
+- `topdata convert-topdata`
+- `wiki build-wiki`
+- `wiki deploy-wiki`
+
+Aliases preserve their existing implementation target. In particular,
+`module build-module` continues to run the module-only implementation; it must
+not silently become the broader `module build`.
+
+### Registry model
+
+`internal/dispatch.Registry` remains the single source of truth. Each wired
+builder owns command records containing:
+
+- visible command name;
+- action-oriented summary;
+- underlying `internal/app` command;
+- command usage and option guidance;
+- hidden compatibility aliases, where applicable.
+
+Execution, menu items, and builder help are generated from these records.
+Unknown commands continue to fail with exit `64`.
+
+### Interactive behavior
+
+The main menu:
+
+- lists only visible commands;
+- aligns the description column from the longest visible label;
+- shows a distinct description for every command.
+
+After selection, it prints the selected command's usage and available options,
+then prompts:
+
+```text
+arguments (press Enter to use defaults):
+```
+
+Arguments continue to use shell-like whitespace splitting, matching current
+behavior. Quoted argument parsing is out of scope.
+
+`crucible <builder> <command> --help` prints the same command-specific guidance,
+returns success, and performs no project loading or build work.
+
+### Remove the unused music pipeline
+
+The music conversion subsystem is deleted rather than hidden:
+
+- remove the `music` app and dispatcher commands;
+- remove `internal/music` and `internal/pipeline/music.go`;
+- remove music config, effective config, validation, environment overrides, and
+  project accessors;
+- remove HAK music preparation, conversion, credits, generated-manifest result
+  fields, `--skip-music`, and `--music-dataset`;
+- remove ffmpeg/ffprobe runtime and development dependencies;
+- remove music-pipeline documentation and wrapper wording.
+
+`.bmu` remains a supported ordinary asset extension and continues through the
+same content-addressed HAK packing path as other authored files. Actual game
+content, category names, or prose that happens to use the word "music" is not
+part of this deletion.
+
+The default asset-extension list drops conversion-only `.mp3` and `.ogg`.
+`.wav` remains because it is an NWN resource type independent of the deleted
+conversion pipeline.
+
+Because `sow-assets-manifest` currently passes `--skip-music`, its
+`scripts/pack-haks.sh` and `scripts/build-local-haks.sh` call sites are updated
+in the same change before verification.
+
+## Error handling
+
+- Canonical and hidden alias lookup is deterministic within one builder.
+- Registry tests reject duplicate visible names or aliases.
+- Command help never delegates to `internal/app`.
+- Removed music commands and flags fail as unknown usage.
+- Existing project files containing a top-level `music:` configuration become
+  invalid under strict YAML decoding. No active consumer configuration contains
+  that field.
+
+## Testing
+
+Tests assert public contracts rather than exact incidental formatting:
+
+- visible command names and hidden alias translation;
+- preservation of the distinct `module build-module` target;
+- hidden aliases absent from menu and normal help;
+- command-specific help exits successfully without project setup;
+- menu columns align and selected-command guidance is displayed;
+- `.bmu` remains accepted as an asset;
+- `.mp3`/`.ogg` are no longer default packable assets;
+- HAK builds no longer expose or execute music preparation;
+- ffmpeg is absent from package/image definitions;
+- both consumer scripts no longer pass `--skip-music`.
+
+Final verification is `nix develop --command make check`, `make build`,
+`make smoke`, focused consumer tests, and repository-wide searches for deleted
+pipeline identifiers.
+
@@ -10,12 +10,11 @@
    in
    {
      # Self-contained (D8): a host with ONLY nix can enter this shell and run
-      # `make check`. ffmpeg is present because the migrated music pipeline needs
-      # it; the scaffold itself is pure stdlib Go.
+      # `make check`.
      # Daemonless image build (D8): `nix build .#image` produces an OCI tarball
      # with no docker/podman daemon. CI loads/pushes it with skopeo. This is the
      # Nix-native replacement for `docker build` on the host-mode runner, which
-      # has no container runtime. ffmpeg-headless ships the BMU codec path.
+      # has no container runtime.
      packages = forAllSystems (pkgs:
        let
          version = self.shortRev or self.dirtyShortRev or "unknown";
@@ -49,7 +48,7 @@
          image = pkgs.dockerTools.buildLayeredImage {
            name = "registry.westgate.pw/deployment/crucible";
            tag = version;
-            contents = [ crucible pkgs.cacert pkgs.ffmpeg-headless pkgs.fakeNss ];
+            contents = [ crucible pkgs.cacert pkgs.fakeNss ];
            config = {
              Entrypoint = [ "/bin/crucible" ];
              Cmd = [ "help" ];
@@ -69,7 +68,6 @@
            go
            gopls
            gotools
-            ffmpeg
            git
            tea
            gnumake
@@ -9,7 +9,6 @@ import (
 	"os/exec"
 	"path/filepath"
 	"runtime"
-	"sort"
 	"strconv"
 	"strings"
 	"sync"
@@ -184,11 +183,6 @@ var commands = []command{
 		description: "Inspect, explain, and validate the resolved project configuration.",
 		run:         runConfig,
 	},
-	{
-		name:        "music",
-		description: "List, scan, build, and validate configured music datasets.",
-		run:         runMusic,
-	},
 	{
 		name:        "compare",
 		description: "Compare current source content against the built archives.",
@@ -470,8 +464,6 @@ type buildHAKOptions struct {
 	filteredArchives     []string
 	sourceManifest       string
 	contentAddressedRoot string
-	musicDatasets        []string
-	skipMusic            bool
 	planOnly             bool
 	logLevel             logLevel
 }
@@ -721,46 +713,11 @@ func (c *buildHAKConsole) emitResult(result pipeline.BuildResult) {
 	spin.linebreak()
 	fmt.Fprintln(c.stdout, "Build HAKs ----------")
 	if c.level != logLevelQuiet {
-		c.emitCreditsSummary(result)
 		c.emitCoreSteps(result)
 	}
 	c.emitFinalSummary(result)
 }

-func (c *buildHAKConsole) emitCreditsSummary(result pipeline.BuildResult) {
-	summary := result.CreditsSummary
-	if len(summary.ArtifactPaths) == 0 {
-		return
-	}
-	fmt.Fprintln(c.stdout, "Refreshing credits cache")
-	if len(summary.ScannedDirs) > 0 {
-		fmt.Fprintf(c.stdout, "  scanned: %s\n", strings.Join(summary.ScannedDirs, ", "))
-	}
-	fmt.Fprintf(c.stdout, "  tracks: %d\n", summary.TrackCount)
-	if len(summary.GeneratedPaths) > 0 {
-		for _, path := range summary.GeneratedPaths {
-			fmt.Fprintf(c.stdout, "  output: %s\n", c.relPath(path))
-		}
-	}
-	switch {
-	case summary.ChangedFiles == 0:
-		fmt.Fprintln(c.stdout, "  status: unchanged")
-	default:
-		fmt.Fprintf(c.stdout, "  updated: %d artifact(s)\n", summary.ChangedFiles)
-	}
-	if summary.TrackCount > 0 {
-		if c.level >= logLevelVerbose {
-			fmt.Fprintln(c.stdout, "  mappings:")
-			for _, mapping := range summary.Mappings {
-				fmt.Fprintf(c.stdout, "    %s -> %s\n", mapping.Source, mapping.Output)
-			}
-		} else {
-			fmt.Fprintf(c.stdout, "  mapped: %d music file(s); use --verbose to list mappings\n", summary.TrackCount)
-		}
-	}
-	fmt.Fprintln(c.stdout)
-}
-
 func (c *buildHAKConsole) emitCoreSteps(result pipeline.BuildResult) {
 	fmt.Fprintln(c.stdout, "Validating project")
 	fmt.Fprintln(c.stdout, "Collecting asset resources")
@@ -808,9 +765,6 @@ func (c *buildHAKConsole) emitFinalSummary(result pipeline.BuildResult) {
 	if result.Manifest != "" {
 		fmt.Fprintf(c.stdout, "manifest: %s\n", c.relPath(result.Manifest))
 	}
-	if len(result.CreditsArtifactPaths) > 0 {
-		fmt.Fprintf(c.stdout, "credits artifacts: %d\n", len(result.CreditsArtifactPaths))
-	}
 	if len(result.AutogenManifestPaths) > 0 {
 		fmt.Fprintf(c.stdout, "autogen manifests: %d\n", len(result.AutogenManifestPaths))
 	}
@@ -1050,8 +1004,6 @@ func runBuildHAKs(ctx context) error {
 		ArchiveNames:         opts.filteredArchives,
 		SourceManifestPath:   opts.sourceManifest,
 		ContentAddressedRoot: opts.contentAddressedRoot,
-		SkipMusic:            opts.skipMusic,
-		MusicDatasetIDs:      opts.musicDatasets,
 	}
 	if opts.planOnly {
 		result, err = pipeline.PlanHAKsWithOptions(p, pipelineOpts)
@@ -1076,7 +1028,7 @@ func parseBuildHAKArgs(args []string) (buildHAKOptions, error) {
 		arg := args[index]
 		switch arg {
 		case "-h", "--help":
-			return opts, errors.New("usage: build-haks [--hak <hak-name> ...] [--archive <archive-name> ...] [--source-manifest <path>] [--content-addressed-root <path>] [--plan-only] [--skip-music] [--music-dataset <id> ...] [--quiet|--verbose|--debug]")
+			return opts, errors.New("usage: build-haks [--hak <hak-name> ...] [--archive <archive-name> ...] [--source-manifest <path>] [--content-addressed-root <path>] [--plan-only] [--quiet|--verbose|--debug]")
 		case "--hak":
 			index++
 			if index >= len(args) {
@@ -1091,14 +1043,6 @@ func parseBuildHAKArgs(args []string) (buildHAKOptions, error) {
 			opts.filteredArchives = append(opts.filteredArchives, args[index])
 		case "--plan-only":
 			opts.planOnly = true
-		case "--skip-music":
-			opts.skipMusic = true
-		case "--music-dataset":
-			index++
-			if index >= len(args) {
-				return opts, errors.New("--music-dataset requires a value")
-			}
-			opts.musicDatasets = append(opts.musicDatasets, args[index])
 		case "--quiet":
 			opts.logLevel = logLevelQuiet
 		case "--verbose":
@@ -1146,13 +1090,6 @@ func parseBuildHAKArgs(args []string) (buildHAKOptions, error) {
 				opts.contentAddressedRoot = value
 				continue
 			}
-			if value, ok, err := requireInlineFlagValue(arg, "--music-dataset"); ok || err != nil {
-				if err != nil {
-					return opts, err
-				}
-				opts.musicDatasets = append(opts.musicDatasets, value)
-				continue
-			}
 			if arg == "--quiet=true" {
 				opts.logLevel = logLevelQuiet
 				continue
@@ -1182,149 +1119,6 @@ func requireInlineFlagValue(arg, name string) (string, bool, error) {
 	return value, true, nil
 }

-type musicCommandOptions struct {
-	datasets []string
-	json     bool
-	dryRun   bool
-	check    bool
-	force    bool
-}
-
-func runMusic(ctx context) error {
-	if len(ctx.args) < 2 {
-		return errors.New("usage: music <list-datasets|scan|build|credits|validate|manifest|normalize> [--dataset <id>] [--json] [--dry-run] [--check] [--force]")
-	}
-	p, err := loadProject(ctx)
-	if err != nil {
-		return err
-	}
-	if err := p.Scan(); err != nil {
-		return err
-	}
-	subcommand := ctx.args[1]
-	opts, err := parseMusicCommandArgs(ctx.args[2:])
-	if err != nil {
-		return err
-	}
-	switch subcommand {
-	case "list-datasets":
-		return emitMusicDatasets(ctx, p, opts)
-	case "scan":
-		result, err := pipeline.BuildMusic(p, pipeline.MusicBuildOptions{DatasetIDs: opts.datasets, Write: false})
-		if err != nil {
-			return err
-		}
-		return emitMusicResult(ctx, "scan", result, opts)
-	case "build", "credits":
-		write := true
-		if subcommand == "build" && opts.dryRun {
-			write = false
-		}
-		if subcommand == "credits" && opts.check {
-			write = false
-		}
-		result, err := pipeline.BuildMusic(p, pipeline.MusicBuildOptions{DatasetIDs: opts.datasets, Write: write})
-		if err != nil {
-			return err
-		}
-		return emitMusicResult(ctx, subcommand, result, opts)
-	case "manifest", "normalize":
-		result, err := pipeline.BuildMusic(p, pipeline.MusicBuildOptions{DatasetIDs: opts.datasets, Write: false})
-		if err != nil {
-			return err
-		}
-		return emitMusicResult(ctx, subcommand, result, opts)
-	case "validate":
-		if err := p.ValidateLayout(); err != nil {
-			return err
-		}
-		result, err := pipeline.BuildMusic(p, pipeline.MusicBuildOptions{DatasetIDs: opts.datasets, Write: false})
-		if err != nil {
-			return err
-		}
-		return emitMusicResult(ctx, "validate", result, opts)
-	default:
-		return fmt.Errorf("unknown music subcommand %q", subcommand)
-	}
-}
-
-func parseMusicCommandArgs(args []string) (musicCommandOptions, error) {
-	opts := musicCommandOptions{}
-	for index := 0; index < len(args); index++ {
-		arg := args[index]
-		switch arg {
-		case "--dataset":
-			index++
-			if index >= len(args) || strings.TrimSpace(args[index]) == "" {
-				return opts, errors.New("--dataset requires a value")
-			}
-			opts.datasets = append(opts.datasets, args[index])
-		case "--json":
-			opts.json = true
-		case "--dry-run":
-			opts.dryRun = true
-		case "--check":
-			opts.check = true
-		case "--force":
-			opts.force = true
-		default:
-			if value, ok, err := requireInlineFlagValue(arg, "--dataset"); ok || err != nil {
-				if err != nil {
-					return opts, err
-				}
-				opts.datasets = append(opts.datasets, value)
-				continue
-			}
-			return opts, fmt.Errorf("unknown music argument %q", arg)
-		}
-	}
-	return opts, nil
-}
-
-func emitMusicDatasets(ctx context, p *project.Project, opts musicCommandOptions) error {
-	effective := p.EffectiveConfig()
-	if opts.json {
-		return emitConfigValue(ctx.stdout, effective.Music.Datasets, "json")
-	}
-	if len(effective.Music.Datasets) == 0 {
-		fmt.Fprintln(ctx.stdout, "music datasets: none")
-		return nil
-	}
-	fmt.Fprintln(ctx.stdout, "music datasets:")
-	ids := make([]string, 0, len(effective.Music.Datasets))
-	for id := range effective.Music.Datasets {
-		ids = append(ids, id)
-	}
-	sort.Strings(ids)
-	for _, id := range ids {
-		ds := effective.Music.Datasets[id]
-		fmt.Fprintf(ctx.stdout, "  %s: source=%s output=%s prefix=%s\n", id, ds.Source, ds.Output, ds.Prefix)
-	}
-	return nil
-}
-
-func emitMusicResult(ctx context, action string, result pipeline.BuildResult, opts musicCommandOptions) error {
-	if opts.json {
-		return emitConfigValue(ctx.stdout, result.CreditsSummary, "json")
-	}
-	fmt.Fprintf(ctx.stdout, "music %s\n", action)
-	if len(result.CreditsSummary.ScannedDirs) > 0 {
-		fmt.Fprintf(ctx.stdout, "scanned: %s\n", strings.Join(result.CreditsSummary.ScannedDirs, ", "))
-	}
-	fmt.Fprintf(ctx.stdout, "tracks: %d\n", result.CreditsSummary.TrackCount)
-	if action != "scan" && len(result.CreditsArtifactPaths) > 0 {
-		fmt.Fprintf(ctx.stdout, "credits artifacts: %d\n", len(result.CreditsArtifactPaths))
-	}
-	if len(result.CreditsSummary.Mappings) > 0 && ctx.logLevel >= logLevelVerbose {
-		fmt.Fprintln(ctx.stdout, "mappings:")
-		for _, mapping := range result.CreditsSummary.Mappings {
-			fmt.Fprintf(ctx.stdout, "  %s -> %s\n", mapping.Source, mapping.Output)
-		}
-	}
-	fmt.Fprintln(ctx.stdout, "status: ok")
-	return nil
-}
-
 func runExtract(ctx context) error {
 	p, err := loadProject(ctx)
 	if err != nil {
@@ -54,8 +54,6 @@ func TestParseBuildHAKArgsHelpListsContentAddressedRoot(t *testing.T) {
 		"--source-manifest",
 		"--content-addressed-root",
 		"--plan-only",
-		"--skip-music",
-		"--music-dataset",
 		"--quiet",
 		"--verbose",
 		"--debug",
@@ -66,6 +64,18 @@ func TestParseBuildHAKArgsHelpListsContentAddressedRoot(t *testing.T) {
 	}
 }

+func TestParseBuildHAKArgsRejectsRemovedMusicFlags(t *testing.T) {
+	for _, args := range [][]string{
+		{"--skip-music"},
+		{"--music-dataset", "westgate"},
+		{"--music-dataset=westgate"},
+	} {
+		if _, err := parseBuildHAKArgs(args); err == nil {
+			t.Errorf("expected removed music arguments %v to fail", args)
+		}
+	}
+}
+
 func TestRunBuildTopPackageUsesCachedCompiledOutputs(t *testing.T) {
 	root := t.TempDir()
 	mkdirAll(t, filepath.Join(root, "build"))
@@ -113,7 +123,7 @@ topdata:
 	}
 }

-func TestRunBuildHAKsNormalOutputOmitsPerFileMappings(t *testing.T) {
+func TestRunBuildHAKsPacksAuthoredBMU(t *testing.T) {
 	root := t.TempDir()
 	mkdirAll(t, filepath.Join(root, "assets", "envi", "music", "westgate"))
 	mkdirAll(t, filepath.Join(root, "build"))
@@ -135,23 +145,7 @@ haks:
    include:
      - envi/**
 `)
-	writeFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "AleandAnecdotes.mp3"), "source-mp3")
-	writeFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "CREDITS.md"), "# NWN Music Pack Credits\n\n| Artist | Title | Output File | Original File | Album | Date | License / Copyright | Notes |\n|---|---|---|---|---|---|---|---|\n| Darren Curtis | Ale and Anecdotes | `mus_wg_andnc.bmu` | `AleandAnecdotes.mp3` | Darren's Commercially Free Music |  | Darren Curtis Music |  |\n")
-
-	ffprobePath := filepath.Join(root, "ffprobe")
-	writeFile(t, ffprobePath, "#!/bin/sh\nprintf '%s\\n' '{\"format\":{\"tags\":{\"artist\":\"Unknown\",\"title\":\"Broken Metadata\"}}}'\n")
-	if err := os.Chmod(ffprobePath, 0o755); err != nil {
-		t.Fatalf("chmod ffprobe: %v", err)
-	}
-
-	ffmpegPath := filepath.Join(root, "ffmpeg")
-	writeFile(t, ffmpegPath, "#!/bin/sh\nfor last; do :; done\nprintf 'bmu-data' > \"$last\"\n")
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	t.Setenv("SOW_FFMPEG", ffmpegPath)
-	t.Setenv("SOW_FFPROBE", ffprobePath)
+	writeFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "westgate_theme.bmu"), "authored-bmu")

 	var stdout bytes.Buffer
 	ctx := context{
@@ -165,9 +159,12 @@ haks:
 		t.Fatalf("runBuildHAKs failed: %v", err)
 	}

-	output := stdout.String()
-	if strings.Contains(output, "AleandAnecdotes.mp3") || strings.Contains(output, "mus_wg_andnc.bmu") {
-		t.Fatalf("did not expect verbose mapping in normal mode, got %q", output)
+	manifest, err := os.ReadFile(filepath.Join(root, "build", "haks.json"))
+	if err != nil {
+		t.Fatalf("read HAK manifest: %v", err)
+	}
+	if !strings.Contains(string(manifest), "envi/music/westgate/westgate_theme.bmu") {
+		t.Fatalf("authored BMU missing from HAK manifest:\n%s", manifest)
 	}
 }

@@ -184,64 +181,6 @@ func setTreeTime(t *testing.T, root string, modTime time.Time) {
 	}
 }

-func TestRunBuildHAKsVerboseListsMappings(t *testing.T) {
-	root := t.TempDir()
-	mkdirAll(t, filepath.Join(root, "assets", "envi", "music", "westgate"))
-	mkdirAll(t, filepath.Join(root, "build"))
-	mkdirAll(t, filepath.Join(root, "src"))
-
-	writeFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Module
-  resref: testmod
-paths:
-  source: src
-  assets: assets
-  build: build
-haks:
-  - name: envi
-    priority: 1
-    max_bytes: 1048576
-    split: false
-    include:
-      - envi/**
-`)
-	writeFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "AleandAnecdotes.mp3"), "source-mp3")
-	writeFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "CREDITS.md"), "# NWN Music Pack Credits\n\n| Artist | Title | Output File | Original File | Album | Date | License / Copyright | Notes |\n|---|---|---|---|---|---|---|---|\n| Darren Curtis | Ale and Anecdotes | `mus_wg_andnc.bmu` | `AleandAnecdotes.mp3` | Darren's Commercially Free Music |  | Darren Curtis Music |  |\n")
-
-	ffprobePath := filepath.Join(root, "ffprobe")
-	writeFile(t, ffprobePath, "#!/bin/sh\nprintf '%s\\n' '{\"format\":{\"tags\":{\"artist\":\"Unknown\",\"title\":\"Broken Metadata\"}}}'\n")
-	if err := os.Chmod(ffprobePath, 0o755); err != nil {
-		t.Fatalf("chmod ffprobe: %v", err)
-	}
-
-	ffmpegPath := filepath.Join(root, "ffmpeg")
-	writeFile(t, ffmpegPath, "#!/bin/sh\nfor last; do :; done\nprintf 'bmu-data' > \"$last\"\n")
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	t.Setenv("SOW_FFMPEG", ffmpegPath)
-	t.Setenv("SOW_FFPROBE", ffprobePath)
-
-	var stdout bytes.Buffer
-	ctx := context{
-		stdout: &stdout,
-		stderr: &bytes.Buffer{},
-		cwd:    root,
-		args:   []string{"build-haks", "--verbose"},
-	}
-
-	if err := runBuildHAKs(ctx); err != nil {
-		t.Fatalf("runBuildHAKs failed: %v", err)
-	}
-
-	output := stdout.String()
-	if !strings.Contains(output, "AleandAnecdotes.mp3") || !strings.Contains(output, "mus_wg_andnc.bmu") {
-		t.Fatalf("expected verbose mapping output, got %q", output)
-	}
-}
-
 func TestTopdataConsoleSuppressesProgressInNormalMode(t *testing.T) {
 	var stdout bytes.Buffer
 	console := &topdataConsole{
@@ -348,77 +287,6 @@ func TestProjectConsoleEmitsRelativePaths(t *testing.T) {
 	}
 }

-func TestRunMusicScanUsesConfiguredDatasetsWithoutWriting(t *testing.T) {
-	root := t.TempDir()
-	mkdirAll(t, filepath.Join(root, "assets", "audio", "westgate"))
-	mkdirAll(t, filepath.Join(root, "build"))
-	writeFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Module
-  resref: testmod
-paths:
-  assets: assets
-  build: build
-music:
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      output: generated/music
-      prefix: wg_
-`)
-	writeFile(t, filepath.Join(root, "assets", "audio", "westgate", "Theme Song.mp3"), "source-mp3")
-
-	ctx := context{
-		stdout: &bytes.Buffer{},
-		stderr: &bytes.Buffer{},
-		cwd:    root,
-		args:   []string{"music", "scan", "--dataset", "westgate_audio"},
-	}
-
-	if err := runMusic(ctx); err != nil {
-		t.Fatalf("runMusic failed: %v", err)
-	}
-	if _, err := os.Stat(filepath.Join(root, ".cache", "credits")); !os.IsNotExist(err) {
-		t.Fatalf("music scan should not write credits artifacts, stat err=%v", err)
-	}
-}
-
-func TestRunMusicListDatasets(t *testing.T) {
-	root := t.TempDir()
-	mkdirAll(t, filepath.Join(root, "assets"))
-	mkdirAll(t, filepath.Join(root, "build"))
-	writeFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Module
-  resref: testmod
-paths:
-  assets: assets
-music:
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      output: generated/music
-      prefix: wg_
-`)
-
-	var stdout bytes.Buffer
-	ctx := context{
-		stdout: &stdout,
-		stderr: &bytes.Buffer{},
-		cwd:    root,
-		args:   []string{"music", "list-datasets"},
-	}
-
-	if err := runMusic(ctx); err != nil {
-		t.Fatalf("runMusic failed: %v", err)
-	}
-	for _, value := range []string{"westgate_audio", "audio/westgate", "generated/music", "wg_"} {
-		if !strings.Contains(stdout.String(), value) {
-			t.Errorf("dataset list missing configured value %q: %q", value, stdout.String())
-		}
-	}
-}
-
 func TestRunConfigEffectiveJSONShowsDefaultsAndProvenance(t *testing.T) {
 	root := t.TempDir()
 	writeFile(t, filepath.Join(root, "nwn-tool.yaml"), `
@@ -539,9 +407,6 @@ func TestInlineFlagParsersRejectEmptyValues(t *testing.T) {
 	if _, err := parseBuildHAKArgs([]string{"--hak="}); err == nil {
 		t.Fatalf("expected empty --hak inline value error, got %v", err)
 	}
-	if _, err := parseMusicCommandArgs([]string{"--dataset="}); err == nil {
-		t.Fatalf("expected empty --dataset inline value error, got %v", err)
-	}
 	if _, err := parseDeployWikiArgs("deploy-wiki", []string{"--endpoint="}); err == nil {
 		t.Fatalf("expected empty --endpoint inline value error, got %v", err)
 	}
@@ -2,7 +2,7 @@
 // builders shared by the `crucible` dispatcher and the standalone
 // `crucible-<name>` shims.
 //
-// Cutover state (Phase 5 → 6): the internal pipeline/topdata/erf/wiki/music
+// Cutover state (Phase 5 → 6): the internal pipeline/topdata/erf/wiki
 // packages migrated from gitea/sow-tools now live in this tree, so wired
 // builders delegate to internal/app's legacy command surface (mapped per
 // docs/command-surface.md). A builder with no migrated logic yet (depot) keeps
@@ -32,22 +32,56 @@ type Builder struct {
 	Name     string    // canonical dispatcher subcommand, e.g. "module"
 	Bin      string    // standalone binary name, e.g. "crucible-module"
 	Summary  string    // one-line description
-	Legacy  []string // nwn-tool commands this subsumes (migration aid; see docs/command-surface.md)
-	Extra   []string // additional callable subcommands beyond Legacy (e.g. cross-listed "music")
+	Commands []Command // visible commands plus hidden compatibility aliases
 	Wired    bool      // true once the builder delegates to migrated internal/app logic
 }

-// subcommands returns every legacy command a wired builder accepts: the
-// canonical Legacy set plus any cross-listed Extra commands.
-func (b Builder) subcommands() []string { return append(append([]string{}, b.Legacy...), b.Extra...) }
+// Command is one public builder action. AppCommand names the unchanged
+// internal/app implementation command. Aliases remain callable for compatibility
+// but are omitted from routine help and the interactive menu.
+type Command struct {
+	Name       string
+	Summary    string
+	AppCommand string
+	Usage      string
+	Options    []string
+	Aliases    []CommandAlias
+}
+
+type CommandAlias struct {
+	Name       string
+	AppCommand string
+}
+
+func (b Builder) subcommands() []string {
+	commands := make([]string, 0, len(b.Commands))
+	for _, command := range b.Commands {
+		commands = append(commands, command.Name)
+	}
+	return commands
+}
+
+func (b Builder) command(name string) (Command, string, bool) {
+	for _, command := range b.Commands {
+		if command.Name == name {
+			return command, command.AppCommand, true
+		}
+		for _, alias := range command.Aliases {
+			if alias.Name == name {
+				target := alias.AppCommand
+				if target == "" {
+					target = command.AppCommand
+				}
+				return command, target, true
+			}
+		}
+	}
+	return Command{}, "", false
+}

 func (b Builder) accepts(sub string) bool {
-	for _, s := range b.subcommands() {
-		if s == sub {
-			return true
-		}
-	}
-	return false
+	_, _, ok := b.command(sub)
+	return ok
 }

 // Registry is the single source of truth for the Crucible command surface.
@@ -57,39 +91,171 @@ var Registry = []Builder{
 		Name:    "depot",
 		Bin:     "crucible-depot",
 		Summary: "verify/move content-addressed depot blobs (SeaweedFS)",
-		Legacy:  nil,
 		Wired:   false, // no migrated logic yet; fails closed (exit 70)
 	},
 	{
 		Name:    "hak",
 		Bin:     "crucible-hak",
 		Summary: "pack/unpack ERF/HAK archives + hak manifests",
-		Legacy:  []string{"build-haks", "apply-hak-manifest"},
-		Extra:   []string{"music"}, // music BMUs are packed into HAKs (command-surface.md)
+		Commands: []Command{
+			{
+				Name:       "build",
+				Summary:    "build configured HAK archives and their manifest",
+				AppCommand: "build-haks",
+				Usage:      "crucible hak build [options]",
+				Options: []string{
+					"--hak <name>                    build selected configured HAKs",
+					"--archive <name>                build selected archive members",
+					"--source-manifest <path>        read a generated source manifest",
+					"--content-addressed-root <path> resolve source-manifest blobs here",
+					"--plan-only                     plan outputs without writing archives",
+					"--quiet | --verbose | --debug   select output detail",
+				},
+				Aliases: []CommandAlias{{Name: "build-haks"}},
+			},
+			{
+				Name:       "manifest",
+				Summary:    "apply a generated HAK list to the module source",
+				AppCommand: "apply-hak-manifest",
+				Usage:      "crucible hak manifest [manifest-path]",
+				Aliases:    []CommandAlias{{Name: "apply-hak-manifest"}},
+			},
+		},
 		Wired: true,
 	},
 	{
 		Name:    "module",
 		Bin:     "crucible-module",
 		Summary: "build/extract/validate/compare the .mod",
-		Legacy:  []string{"build", "build-module", "extract", "validate", "compare"},
-		// apply-hak-manifest is canonically a hak command but reachable here too;
-		// music is folded into the module build pipeline (command-surface.md).
-		Extra: []string{"apply-hak-manifest", "music"},
+		Commands: []Command{
+			{
+				Name:       "build",
+				Summary:    "build the module and configured project outputs",
+				AppCommand: "build",
+				Usage:      "crucible module build [--quiet|--verbose|--debug]",
+				Aliases:    []CommandAlias{{Name: "build-module", AppCommand: "build-module"}},
+			},
+			{
+				Name:       "extract",
+				Summary:    "extract built archives into configured source trees",
+				AppCommand: "extract",
+				Usage:      "crucible module extract [resource ...]",
+			},
+			{
+				Name:       "validate",
+				Summary:    "validate project layout, config, and source inventory",
+				AppCommand: "validate",
+				Usage:      "crucible module validate",
+			},
+			{
+				Name:       "compare",
+				Summary:    "compare source content with built module and HAK archives",
+				AppCommand: "compare",
+				Usage:      "crucible module compare",
+			},
+			{
+				Name:       "manifest",
+				Summary:    "apply a generated HAK list to the module source",
+				AppCommand: "apply-hak-manifest",
+				Usage:      "crucible module manifest [manifest-path]",
+				Aliases:    []CommandAlias{{Name: "apply-hak-manifest"}},
+			},
+		},
 		Wired: true,
 	},
 	{
 		Name:    "topdata",
 		Bin:     "crucible-topdata",
 		Summary: "compile 2da/tlk topdata + packages",
-		Legacy:  []string{"validate-topdata", "build-topdata", "build-top-package", "compare-topdata", "convert-topdata"},
+		Commands: []Command{
+			{
+				Name:       "validate",
+				Summary:    "validate topdata layout and canonical JSON compatibility",
+				AppCommand: "validate-topdata",
+				Usage:      "crucible topdata validate",
+				Aliases:    []CommandAlias{{Name: "validate-topdata"}},
+			},
+			{
+				Name:       "build",
+				Summary:    "compile topdata and refresh the configured package",
+				AppCommand: "build-topdata",
+				Usage:      "crucible topdata build [--force] [--wiki] [--skip-lfs]",
+				Options: []string{
+					"--force      rebuild outputs even when current",
+					"--wiki       build wiki drafts after compilation",
+					"--skip-lfs   skip Git LFS materialization",
+				},
+				Aliases: []CommandAlias{{Name: "build-topdata"}},
+			},
+			{
+				Name:       "package",
+				Summary:    "package cached topdata outputs into HAK and TLK files",
+				AppCommand: "build-top-package",
+				Usage:      "crucible topdata package [--force] [--skip-lfs]",
+				Options: []string{
+					"--force      rebuild outputs even when current",
+					"--skip-lfs   skip Git LFS materialization",
+				},
+				Aliases: []CommandAlias{{Name: "build-top-package"}},
+			},
+			{
+				Name:       "compare",
+				Summary:    "compare current output with a fresh native build",
+				AppCommand: "compare-topdata",
+				Usage:      "crucible topdata compare",
+				Aliases:    []CommandAlias{{Name: "compare-topdata"}},
+			},
+			{
+				Name:       "convert",
+				Summary:    "convert between 2DA and native JSON/module formats",
+				AppCommand: "convert-topdata",
+				Usage:      "crucible topdata convert <2da-to-json|2da-to-module|json-to-2da> ...",
+				Options: []string{
+					"2da-to-json <input.2da> <output.json>",
+					"2da-to-module [flags] <input.2da> [output.json]",
+					"json-to-2da <input.json> <output.2da>",
+				},
+				Aliases:    []CommandAlias{{Name: "convert-topdata"}},
+			},
+		},
 		Wired: true,
 	},
 	{
 		Name:    "wiki",
 		Bin:     "crucible-wiki",
 		Summary: "render + deploy mechanical wiki pages",
-		Legacy:  []string{"build-wiki", "deploy-wiki"},
+		Commands: []Command{
+			{
+				Name:       "build",
+				Summary:    "render wiki page drafts from compiled topdata",
+				AppCommand: "build-wiki",
+				Usage:      "crucible wiki build [--force]",
+				Options:    []string{"--force   rebuild drafts even when current"},
+				Aliases:    []CommandAlias{{Name: "build-wiki"}},
+			},
+			{
+				Name:       "deploy",
+				Summary:    "deploy generated wiki pages to NodeBB",
+				AppCommand: "deploy-wiki",
+				Usage:      "crucible wiki deploy [options]",
+				Options: []string{
+					"--source-dir <path>              read generated pages here",
+					"--endpoint <url>                 override the NodeBB endpoint",
+					"--token <token>                  authenticate with an API token",
+					"--username/--password <value>    authenticate with credentials",
+					"--version <version>              label the deployed revision",
+					"--namespace <name>               deploy selected namespaces",
+					"--category <namespace=id>        override a namespace category",
+					"--manifest <path>                write deployment state here",
+					"--stale-policy <policy>          report, archive, or purge",
+					"--dry-run                        report changes without writing",
+					"--create                         allow missing pages to be created",
+					"--force                          update unchanged pages",
+					"--reset-managed-namespaces       reset managed namespace state",
+				},
+				Aliases: []CommandAlias{{Name: "deploy-wiki"}},
+			},
+		},
 		Wired: true,
 	},
 }
@@ -128,10 +294,14 @@ func menuItems() []menu.Item {
 			continue
 		}
 		for _, sub := range b.subcommands() {
+			command, _, _ := b.command(sub)
 			items = append(items, menu.Item{
 				Label: b.Name + " " + sub,
-				Desc:  b.Summary,
+				Desc:  command.Summary,
 				Args:  []string{b.Name, sub},
+				Usage: command.Usage,
+				Options: append([]string(nil),
+					command.Options...),
 			})
 		}
 	}
@@ -206,14 +376,21 @@ func runBuilder(name string, args []string, out, errw io.Writer) int {
 		return exitUsage
 	}
 	sub := args[0]
-	if !b.accepts(sub) {
+	command, appCommand, ok := b.command(sub)
+	if !ok {
 		fmt.Fprintf(errw, "crucible %s: unknown subcommand %q\n\n", b.Name, sub)
 		builderHelp(errw, b)
 		return exitUsage
 	}
-	// Delegate to the migrated legacy command surface. args[0] is already the
-	// legacy command name, so it is forwarded unchanged.
-	return delegateLegacy(args, errw)
+	if len(args) > 1 {
+		switch args[1] {
+		case "-h", "--help", "help":
+			commandHelp(out, command)
+			return exitOK
+		}
+	}
+	legacyArgs := append([]string{appCommand}, args[1:]...)
+	return delegateLegacy(legacyArgs, errw)
 }

 // delegateLegacy runs a migrated nwn-tool command via internal/app and maps its
@@ -269,8 +446,27 @@ func builderHelp(w io.Writer, b Builder) {
 	}
 	fmt.Fprintf(w, "usage: crucible %s <subcommand> [args]   (or: %s <subcommand> [args])\n\n", b.Name, b.Bin)
 	fmt.Fprintf(w, "subcommands:\n")
-	for _, c := range b.subcommands() {
-		fmt.Fprintf(w, "  %s\n", c)
+	width := 0
+	for _, command := range b.Commands {
+		if len(command.Name) > width {
+			width = len(command.Name)
+		}
+	}
+	for _, command := range b.Commands {
+		fmt.Fprintf(w, "  %-*s  %s\n", width, command.Name, command.Summary)
 	}
 	fmt.Fprintf(w, "\nstatus: wired to migrated nwn-tool logic. See docs/command-surface.md.\n")
 }
+
+func commandHelp(w io.Writer, command Command) {
+	fmt.Fprintf(w, "%s\n", command.Summary)
+	if command.Usage != "" {
+		fmt.Fprintf(w, "\nusage: %s\n", command.Usage)
+	}
+	if len(command.Options) > 0 {
+		fmt.Fprintln(w, "\noptions:")
+		for _, option := range command.Options {
+			fmt.Fprintf(w, "  %s\n", option)
+		}
+	}
+}
@@ -148,28 +148,138 @@ func TestBuilderHelpIsOK(t *testing.T) {
 	}
 }

-// Every legacy command named in command-surface.md must have exactly one
-// canonical home (Builder.Legacy), so the migrated surface has no gaps or
-// ambiguous homes.
-func TestLegacyCommandsHaveExactlyOneHome(t *testing.T) {
-	legacy := []string{
-		"build", "build-module", "extract", "validate", "compare",
-		"build-haks", "apply-hak-manifest",
-		"validate-topdata", "build-topdata", "build-top-package", "compare-topdata", "convert-topdata",
-		"build-wiki", "deploy-wiki",
+func TestCanonicalCommandSurface(t *testing.T) {
+	want := map[string][]string{
+		"depot":   nil,
+		"hak":     {"build", "manifest"},
+		"module":  {"build", "extract", "validate", "compare", "manifest"},
+		"topdata": {"validate", "build", "package", "compare", "convert"},
+		"wiki":    {"build", "deploy"},
 	}
-	for _, cmd := range legacy {
-		homes := 0
-		for _, b := range Registry {
-			for _, c := range b.Legacy {
-				if c == cmd {
-					homes++
+	for _, builder := range Registry {
+		got := builder.subcommands()
+		expected, ok := want[builder.Name]
+		if !ok {
+			t.Fatalf("unexpected builder %q", builder.Name)
+		}
+		if strings.Join(got, ",") != strings.Join(expected, ",") {
+			t.Errorf("%s commands = %v, want %v", builder.Name, got, expected)
 		}
 	}
 }
-		if homes != 1 {
-			t.Errorf("legacy command %q has %d canonical homes, want 1", cmd, homes)
+
+func TestRegistryCommandNamesAndAliasesAreUnambiguous(t *testing.T) {
+	for _, builder := range Registry {
+		seen := map[string]bool{}
+		for _, command := range builder.Commands {
+			if command.Name == "" || command.Summary == "" || command.AppCommand == "" || command.Usage == "" {
+				t.Errorf("%s has incomplete command metadata: %#v", builder.Name, command)
 			}
+			if seen[command.Name] {
+				t.Errorf("%s repeats command name %q", builder.Name, command.Name)
+			}
+			seen[command.Name] = true
+			for _, alias := range command.Aliases {
+				if alias.Name == "" {
+					t.Errorf("%s %s has an empty alias", builder.Name, command.Name)
+					continue
+				}
+				if seen[alias.Name] {
+					t.Errorf("%s repeats command or alias %q", builder.Name, alias.Name)
+				}
+				seen[alias.Name] = true
+			}
+		}
+	}
+}
+
+func TestMusicCommandsAreNotAccepted(t *testing.T) {
+	for _, builderName := range []string{"hak", "module"} {
+		builder, ok := find(builderName)
+		if !ok {
+			t.Fatalf("missing builder %q", builderName)
+		}
+		if builder.accepts("music") {
+			t.Errorf("%s must not accept the removed music command", builderName)
+		}
+	}
+}
+
+func TestHiddenAliasesPreserveImplementationTargets(t *testing.T) {
+	tests := []struct {
+		builder string
+		alias   string
+		target  string
+	}{
+		{"hak", "build-haks", "build-haks"},
+		{"hak", "apply-hak-manifest", "apply-hak-manifest"},
+		{"module", "build-module", "build-module"},
+		{"module", "apply-hak-manifest", "apply-hak-manifest"},
+		{"topdata", "validate-topdata", "validate-topdata"},
+		{"topdata", "build-topdata", "build-topdata"},
+		{"topdata", "build-top-package", "build-top-package"},
+		{"topdata", "compare-topdata", "compare-topdata"},
+		{"topdata", "convert-topdata", "convert-topdata"},
+		{"wiki", "build-wiki", "build-wiki"},
+		{"wiki", "deploy-wiki", "deploy-wiki"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.builder+"/"+tt.alias, func(t *testing.T) {
+			builder, ok := find(tt.builder)
+			if !ok {
+				t.Fatalf("missing builder %q", tt.builder)
+			}
+			command, target, ok := builder.command(tt.alias)
+			if !ok {
+				t.Fatalf("hidden alias %q is not accepted", tt.alias)
+			}
+			if target != tt.target {
+				t.Fatalf("alias %q target = %q, want %q", tt.alias, target, tt.target)
+			}
+			if command.Name == tt.alias {
+				t.Fatalf("alias %q must not be a visible command", tt.alias)
+			}
+		})
+	}
+}
+
+func TestBuilderHelpHidesCompatibilityAliases(t *testing.T) {
+	aliases := map[string][]string{
+		"hak":     {"build-haks", "apply-hak-manifest"},
+		"module":  {"build-module", "apply-hak-manifest"},
+		"topdata": {"validate-topdata", "build-topdata", "build-top-package", "compare-topdata", "convert-topdata"},
+		"wiki":    {"build-wiki", "deploy-wiki"},
+	}
+	for builderName, hidden := range aliases {
+		var out, errw bytes.Buffer
+		if code := runBuilder(builderName, []string{"--help"}, &out, &errw); code != exitOK {
+			t.Fatalf("%s help exit = %d", builderName, code)
+		}
+		for _, alias := range hidden {
+			if strings.Contains(out.String(), alias) {
+				t.Errorf("%s help exposed hidden alias %q:\n%s", builderName, alias, out.String())
+			}
+		}
+	}
+}
+
+func TestCommandHelpUsesCanonicalGuidanceWithoutLoadingProject(t *testing.T) {
+	var out, errw bytes.Buffer
+	if code := runBuilder("topdata", []string{"build", "--help"}, &out, &errw); code != exitOK {
+		t.Fatalf("command help exit = %d, stderr:\n%s", code, errw.String())
+	}
+	for _, want := range []string{
+		"compile topdata",
+		"usage: crucible topdata build",
+		"--force",
+		"--skip-lfs",
+	} {
+		if !strings.Contains(out.String(), want) {
+			t.Errorf("command help missing %q:\n%s", want, out.String())
+		}
+	}
+	if errw.Len() != 0 {
+		t.Fatalf("command help must not load a project or emit errors:\n%s", errw.String())
 	}
 }

@@ -15,8 +15,10 @@ import (
 // Item is one selectable command.
 type Item struct {
 	Label   string   // e.g. "module build"
-	Desc  string   // e.g. "build/extract/validate/compare the .mod"
+	Desc    string   // e.g. "build the configured module"
 	Args    []string // dispatcher args, e.g. {"module", "build"}
+	Usage   string
+	Options []string
 }

 // ANSI styling; terminals that don't support it simply ignore the codes.
@@ -35,9 +37,15 @@ func Select(out io.Writer, in io.Reader, items []Item) ([]string, error) {
 		return nil, fmt.Errorf("no commands available")
 	}
 	fmt.Fprintf(out, "%s%sCrucible%s — pick a command:\n\n", cBold, cCyan, cReset)
+	labelWidth := 0
+	for _, item := range items {
+		if len(item.Label) > labelWidth {
+			labelWidth = len(item.Label)
+		}
+	}
 	for i, it := range items {
-		fmt.Fprintf(out, "  %s%2d%s  %s%-24s%s %s%s%s\n",
-			cCyan, i+1, cReset, cBold, it.Label, cReset, cDim, it.Desc, cReset)
+		fmt.Fprintf(out, "  %s%2d%s  %s%-*s%s  %s%s%s\n",
+			cCyan, i+1, cReset, cBold, labelWidth, it.Label, cReset, cDim, it.Desc, cReset)
 	}
 	fmt.Fprintf(out, "   %sq%s  quit\n\nselection: ", cCyan, cReset)

@@ -52,7 +60,16 @@ func Select(out io.Writer, in io.Reader, items []Item) ([]string, error) {
 			return nil, fmt.Errorf("invalid selection %q", choice)
 		}
 		it := items[n-1]
-		fmt.Fprintf(out, "extra args for %q (optional): ", it.Label)
+		if it.Usage != "" {
+			fmt.Fprintf(out, "\nusage: %s\n", it.Usage)
+		}
+		if len(it.Options) > 0 {
+			fmt.Fprintln(out, "options:")
+			for _, option := range it.Options {
+				fmt.Fprintf(out, "  %s\n", option)
+			}
+		}
+		fmt.Fprint(out, "\narguments (press Enter to use defaults): ")
 		argLine, _ := r.ReadString('\n')
 		extra := strings.Fields(strings.TrimSpace(argLine))
 		return append(append([]string{}, it.Args...), extra...), nil
@@ -1,8 +1,10 @@
 package menu

 import (
+	"bytes"
 	"io"
 	"reflect"
+	"regexp"
 	"strings"
 	"testing"
 )
@@ -45,3 +47,58 @@ func TestSelectInvalidErrors(t *testing.T) {
 		t.Fatal("out-of-range selection should error")
 	}
 }
+
+func TestSelectAlignsDescriptionsAfterLongestLabel(t *testing.T) {
+	items := []Item{
+		{Label: "hak build", Desc: "build haks", Args: []string{"hak", "build"}},
+		{Label: "topdata exceptionally-long-command", Desc: "long command", Args: []string{"topdata", "long"}},
+	}
+	var out bytes.Buffer
+	if _, err := Select(&out, strings.NewReader("q\n"), items); err != nil {
+		t.Fatalf("select: %v", err)
+	}
+	text := stripANSI(out.String())
+	var positions []int
+	for _, line := range strings.Split(text, "\n") {
+		for _, desc := range []string{"build haks", "long command"} {
+			if index := strings.Index(line, desc); index >= 0 {
+				positions = append(positions, index)
+			}
+		}
+	}
+	if len(positions) != 2 {
+		t.Fatalf("expected two menu descriptions, got %d:\n%s", len(positions), text)
+	}
+	if positions[0] != positions[1] {
+		t.Fatalf("descriptions are not aligned: columns %v\n%s", positions, text)
+	}
+}
+
+func TestSelectShowsCommandGuidanceBeforeArgumentsPrompt(t *testing.T) {
+	items := []Item{{
+		Label:   "topdata build",
+		Desc:    "compile topdata",
+		Args:    []string{"topdata", "build"},
+		Usage:   "crucible topdata build [--force]",
+		Options: []string{"--force   rebuild outputs"},
+	}}
+	var out bytes.Buffer
+	if _, err := Select(&out, strings.NewReader("1\n\n"), items); err != nil {
+		t.Fatalf("select: %v", err)
+	}
+	text := stripANSI(out.String())
+	for _, want := range []string{
+		"usage: crucible topdata build [--force]",
+		"options:",
+		"--force   rebuild outputs",
+		"arguments (press Enter to use defaults):",
+	} {
+		if !strings.Contains(text, want) {
+			t.Errorf("selected command guidance missing %q:\n%s", want, text)
+		}
+	}
+}
+
+func stripANSI(value string) string {
+	return regexp.MustCompile(`\x1b\[[0-9;]*m`).ReplaceAllString(value, "")
+}
@@ -1,47 +0,0 @@
-package music
-
-import (
-	"fmt"
-	"path/filepath"
-	"strings"
-)
-
-type DatasetConfig struct {
-	Source      string `json:"source" yaml:"source"`
-	Prefix      string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
-	StageRoot   string `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
-	CreditsRoot string `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
-}
-
-type DefaultsConfig struct {
-	StageRoot      string `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
-	CreditsRoot    string `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
-	CreditsOverlay string `json:"credits_overlay,omitempty" yaml:"credits_overlay,omitempty"`
-	MaxStemLength  *int   `json:"max_stem_length,omitempty" yaml:"max_stem_length,omitempty"`
-}
-
-func ValidateDatasetSource(field, source string) error {
-	trimmed := strings.TrimSpace(source)
-	if trimmed == "" {
-		return fmt.Errorf("%s.source is required", field)
-	}
-	if strings.Contains(trimmed, "\x00") {
-		return fmt.Errorf("%s.source must not contain NUL bytes", field)
-	}
-	clean := filepath.Clean(filepath.FromSlash(trimmed))
-	if clean == ".." || strings.HasPrefix(clean, ".."+string(filepath.Separator)) {
-		return fmt.Errorf("%s.source must not escape project root", field)
-	}
-	return nil
-}
-
-func ValidateDatasetID(id string) error {
-	trimmed := strings.TrimSpace(id)
-	if trimmed == "" {
-		return fmt.Errorf("dataset id must not be empty")
-	}
-	if strings.Contains(trimmed, "/") || strings.Contains(trimmed, "\\") {
-		return fmt.Errorf("dataset id %q must not contain path separators", trimmed)
-	}
-	return nil
-}
@@ -1,292 +0,0 @@
-package music
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-)
-
-func ParseCreditsOverlay(path string) (CreditsOverlay, error) {
-	entries, err := ParseCreditsMarkdown(path)
-	if err != nil {
-		return CreditsOverlay{}, err
-	}
-	overlay := CreditsOverlay{
-		ByOriginal: make(map[string]CreditsEntry),
-		ByOutput:   make(map[string]CreditsEntry),
-		Entries:    entries,
-	}
-	for _, entry := range entries {
-		if entry.OriginalFile != "" {
-			key := strings.ToLower(strings.TrimSpace(entry.OriginalFile))
-			if _, exists := overlay.ByOriginal[key]; exists {
-				return CreditsOverlay{}, fmt.Errorf("duplicate manual credits row for original file %s", entry.OriginalFile)
-			}
-			overlay.ByOriginal[key] = entry
-		}
-		if entry.OutputFile != "" {
-			key := strings.ToLower(strings.TrimSpace(entry.OutputFile))
-			if _, exists := overlay.ByOutput[key]; exists {
-				return CreditsOverlay{}, fmt.Errorf("duplicate manual credits row for output file %s", entry.OutputFile)
-			}
-			overlay.ByOutput[key] = entry
-		}
-	}
-	return overlay, nil
-}
-
-func (o CreditsOverlay) Match(originalFile, outputFile string) *CreditsEntry {
-	if entry, ok := o.ByOutput[strings.ToLower(strings.TrimSpace(outputFile))]; ok {
-		entryCopy := entry
-		return &entryCopy
-	}
-	if entry, ok := o.ByOriginal[strings.ToLower(strings.TrimSpace(originalFile))]; ok {
-		entryCopy := entry
-		return &entryCopy
-	}
-	return nil
-}
-
-func ValidateOverlayEntries(dir string, overlay CreditsOverlay, generated []CreditsEntry) error {
-	if len(overlay.Entries) == 0 {
-		return nil
-	}
-	validOriginal := make(map[string]struct{}, len(generated))
-	validOutput := make(map[string]struct{}, len(generated))
-	for _, entry := range generated {
-		validOriginal[strings.ToLower(entry.OriginalFile)] = struct{}{}
-		validOutput[strings.ToLower(entry.OutputFile)] = struct{}{}
-	}
-	for _, entry := range overlay.Entries {
-		if entry.OriginalFile != "" {
-			if _, ok := validOriginal[strings.ToLower(entry.OriginalFile)]; !ok {
-				return fmt.Errorf("manual credits entry in %s references unknown original file %s", dir, entry.OriginalFile)
-			}
-		}
-		if entry.OutputFile != "" {
-			if _, ok := validOutput[strings.ToLower(entry.OutputFile)]; !ok {
-				return fmt.Errorf("manual credits entry in %s references unknown output file %s", dir, entry.OutputFile)
-			}
-		}
-	}
-	return nil
-}
-
-func ParseCreditsMarkdown(path string) ([]CreditsEntry, error) {
-	raw, err := os.ReadFile(path)
-	if err != nil {
-		if os.IsNotExist(err) {
-			return nil, nil
-		}
-		return nil, err
-	}
-	lines := strings.Split(strings.ReplaceAll(string(raw), "\r\n", "\n"), "\n")
-	header := []string(nil)
-	entries := make([]CreditsEntry, 0)
-	for _, line := range lines {
-		line = strings.TrimSpace(line)
-		if !strings.HasPrefix(line, "|") {
-			continue
-		}
-		cells := ParseMarkdownTableRow(line)
-		if len(cells) == 0 {
-			continue
-		}
-		if header == nil {
-			header = make([]string, len(cells))
-			for i, cell := range cells {
-				header[i] = NormalizeCreditsHeader(cell)
-			}
-			continue
-		}
-		if IsMarkdownSeparatorRow(cells) {
-			continue
-		}
-		entry := CreditsEntry{}
-		for i, key := range header {
-			if i >= len(cells) {
-				continue
-			}
-			value := CleanCreditsCell(cells[i])
-			switch key {
-			case "artist":
-				entry.Artist = value
-			case "title":
-				entry.Title = value
-			case "output_file":
-				entry.OutputFile = value
-			case "original_file":
-				entry.OriginalFile = value
-			case "album":
-				entry.Album = value
-			case "date":
-				entry.Date = value
-			case "rights":
-				entry.Rights = value
-			case "notes":
-				entry.Notes = value
-			}
-		}
-		if entry.Artist == "" && entry.Title == "" && entry.OutputFile == "" && entry.OriginalFile == "" {
-			continue
-		}
-		entries = append(entries, entry)
-	}
-	return entries, nil
-}
-
-func ParseMarkdownTableRow(line string) []string {
-	trimmed := strings.TrimSpace(line)
-	trimmed = strings.TrimPrefix(trimmed, "|")
-	trimmed = strings.TrimSuffix(trimmed, "|")
-	parts := strings.Split(trimmed, "|")
-	cells := make([]string, 0, len(parts))
-	for _, part := range parts {
-		cells = append(cells, strings.TrimSpace(strings.ReplaceAll(part, `\|`, "|")))
-	}
-	return cells
-}
-
-func IsMarkdownSeparatorRow(cells []string) bool {
-	if len(cells) == 0 {
-		return false
-	}
-	for _, cell := range cells {
-		cell = strings.TrimSpace(cell)
-		cell = strings.ReplaceAll(cell, "-", "")
-		cell = strings.ReplaceAll(cell, ":", "")
-		if cell != "" {
-			return false
-		}
-	}
-	return true
-}
-
-func NormalizeCreditsHeader(value string) string {
-	switch strings.ToLower(CleanCreditsCell(value)) {
-	case "artist":
-		return "artist"
-	case "title":
-		return "title"
-	case "output file":
-		return "output_file"
-	case "original file":
-		return "original_file"
-	case "album":
-		return "album"
-	case "date":
-		return "date"
-	case "license / copyright":
-		return "rights"
-	case "notes":
-		return "notes"
-	default:
-		return ""
-	}
-}
-
-func CleanCreditsCell(value string) string {
-	value = strings.TrimSpace(value)
-	value = strings.Trim(value, "`")
-	value = strings.ReplaceAll(value, "<br>", "\n")
-	return strings.TrimSpace(value)
-}
-
-func RenderCreditsMarkdown(entries []CreditsEntry) string {
-	var builder strings.Builder
-	builder.WriteString(CreditsHeader)
-	for _, entry := range entries {
-		builder.WriteString("| ")
-		builder.WriteString(EscapeMarkdownCell(entry.Artist))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(entry.Title))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(WrapCodeCell(entry.OutputFile)))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(WrapCodeCell(entry.OriginalFile)))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(entry.Album))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(entry.Date))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(entry.Rights))
-		builder.WriteString(" | ")
-		builder.WriteString(EscapeMarkdownCell(entry.Notes))
-		builder.WriteString(" |\n")
-	}
-	return builder.String()
-}
-
-func WrapCodeCell(value string) string {
-	if strings.TrimSpace(value) == "" {
-		return ""
-	}
-	return "`" + value + "`"
-}
-
-func EscapeMarkdownCell(value string) string {
-	value = strings.ReplaceAll(value, `\`, `\\`)
-	value = strings.ReplaceAll(value, "|", `\|`)
-	value = strings.ReplaceAll(value, "\n", "<br>")
-	return value
-}
-
-func ApplyCreditsOverlay(entry *CreditsEntry, overlay *CreditsEntry) {
-	if overlay == nil {
-		return
-	}
-	entry.Artist = FirstNonEmpty(overlay.Artist, entry.Artist)
-	entry.Title = FirstNonEmpty(overlay.Title, entry.Title)
-	entry.Album = FirstNonEmpty(overlay.Album, entry.Album)
-	entry.Date = FirstNonEmpty(overlay.Date, entry.Date)
-	entry.Rights = FirstNonEmpty(overlay.Rights, entry.Rights)
-	entry.Notes = FirstNonEmpty(overlay.Notes, entry.Notes)
-}
-
-func SyncGeneratedCreditsArtifacts(root string, desiredFiles map[string][]byte) (int, error) {
-	changedFiles := 0
-	existingFiles := make(map[string]struct{})
-	if err := filepath.WalkDir(root, func(path string, d os.DirEntry, walkErr error) error {
-		if walkErr != nil {
-			if os.IsNotExist(walkErr) {
-				return nil
-			}
-			return walkErr
-		}
-		if d.IsDir() {
-			return nil
-		}
-		existingFiles[path] = struct{}{}
-		return nil
-	}); err != nil {
-		return 0, fmt.Errorf("scan credits dir: %w", err)
-	}
-
-	for path, content := range desiredFiles {
-		current, err := os.ReadFile(path)
-		if err != nil && !os.IsNotExist(err) {
-			return 0, fmt.Errorf("read credits artifact %s: %w", path, err)
-		}
-		if err == nil && string(current) == string(content) {
-			delete(existingFiles, path)
-			continue
-		}
-		if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
-			return 0, fmt.Errorf("create generated credits dir: %w", err)
-		}
-		if err := os.WriteFile(path, content, 0o644); err != nil {
-			return 0, fmt.Errorf("write credits artifact %s: %w", path, err)
-		}
-		changedFiles++
-		delete(existingFiles, path)
-	}
-
-	for path := range existingFiles {
-		if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
-			return 0, fmt.Errorf("remove stale credits artifact %s: %w", path, err)
-		}
-		changedFiles++
-	}
-	return changedFiles, nil
-}
@@ -1,62 +0,0 @@
-package music
-
-import (
-	"encoding/json"
-	"fmt"
-	"os/exec"
-	"strings"
-)
-
-func ProbeMetadata(ffprobePath, sourcePath string) (Metadata, error) {
-	cmd := exec.Command(ffprobePath, "-v", "quiet", "-print_format", "json", "-show_format", sourcePath)
-	output, err := cmd.Output()
-	if err != nil {
-		return Metadata{}, err
-	}
-	var payload struct {
-		Format struct {
-			Tags map[string]string `json:"tags"`
-		} `json:"format"`
-	}
-	if err := json.Unmarshal(output, &payload); err != nil {
-		return Metadata{}, err
-	}
-	tags := make(map[string]string, len(payload.Format.Tags))
-	for key, value := range payload.Format.Tags {
-		tags[strings.ToLower(strings.TrimSpace(key))] = strings.TrimSpace(value)
-	}
-	return Metadata{
-		Title:     FirstNonEmpty(tags["title"]),
-		Artist:    FirstNonEmpty(tags["artist"], tags["album_artist"], tags["composer"]),
-		Album:     FirstNonEmpty(tags["album"]),
-		Date:      FirstNonEmpty(tags["date"], tags["year"]),
-		Comment:   FirstNonEmpty(tags["comment"], tags["description"]),
-		Copyright: FirstNonEmpty(tags["copyright"]),
-		License:   FirstNonEmpty(tags["license"], tags["license_url"]),
-	}, nil
-}
-
-func ConvertSource(ffmpegPath, sourcePath, outputPath string) error {
-	cmd := exec.Command(
-		ffmpegPath, "-y",
-		"-i", sourcePath,
-		"-vn",
-		"-map_metadata", "-1",
-		"-ar", "44100",
-		"-ac", "2",
-		"-b:a", "192k",
-		"-codec:a", "libmp3lame",
-		"-write_xing", "0",
-		"-f", "mp3",
-		outputPath,
-	)
-	output, err := cmd.CombinedOutput()
-	if err != nil {
-		message := strings.TrimSpace(string(output))
-		if message == "" {
-			message = err.Error()
-		}
-		return fmt.Errorf("%s", message)
-	}
-	return nil
-}
@@ -1,239 +0,0 @@
-package music
-
-import (
-	"fmt"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"regexp"
-	"sort"
-	"strings"
-)
-
-const (
-	MaxStemLen    = 16
-	CreditsHeader = "# NWN Music Pack Credits\n\nOriginal rights remain with the respective composers and licensors.\n\n## Processed Files\n\n| Artist | Title | Output File | Original File | Album | Date | License / Copyright | Notes |\n|---|---|---|---|---|---|---|---|\n"
-)
-
-var (
-	defaultConvertExtensions = []string{
-		".flac",
-		".m4a",
-		".mp3",
-		".ogg",
-		".wav",
-	}
-	ConvertExtensions = map[string]struct{}{
-		".flac": {},
-		".m4a":  {},
-		".mp3":  {},
-		".ogg":  {},
-		".wav":  {},
-	}
-	PassthroughExtensions = map[string]struct{}{
-		".bmu": {},
-		".wav": {},
-	}
-	DropWords = map[string]struct{}{
-		"mp3": {}, "wav": {}, "flac": {}, "ogg": {}, "m4a": {},
-		"music": {}, "track": {}, "audio": {}, "song": {}, "soundtrack": {},
-		"final": {}, "version": {}, "ver": {}, "v": {}, "mix": {}, "master": {}, "remaster": {},
-		"free": {}, "royalty": {}, "copyright": {}, "background": {}, "bgm": {},
-		"loop": {}, "loops": {}, "loopable": {}, "seamless": {},
-		"official": {}, "download": {}, "preview": {},
-		"the": {}, "a": {}, "an": {}, "and": {}, "of": {}, "to": {}, "in": {}, "for": {}, "with": {}, "by": {},
-	}
-	BracketRE = regexp.MustCompile(`\[[^\]]*\]|\([^)]*\)|\{[^}]*\}`)
-	SplitRE   = regexp.MustCompile(`[^A-Za-z0-9]+`)
-	YearRE    = regexp.MustCompile(`^\d{4,}$`)
-	VowelRE   = regexp.MustCompile(`[aeiou]`)
-)
-
-func DefaultConvertExtensions() []string {
-	return append([]string(nil), defaultConvertExtensions...)
-}
-
-type Metadata struct {
-	Title     string
-	Artist    string
-	Album     string
-	Date      string
-	Rights    string
-	Notes     string
-	Comment   string
-	Copyright string
-	License   string
-}
-
-type CreditsEntry struct {
-	Artist       string `json:"artist"`
-	Title        string `json:"title"`
-	OutputFile   string `json:"output_file"`
-	OriginalFile string `json:"original_file"`
-	Album        string `json:"album"`
-	Date         string `json:"date"`
-	Rights       string `json:"rights"`
-	Notes        string `json:"notes"`
-}
-
-type CreditsSource struct {
-	Path    string         `json:"path"`
-	Kind    string         `json:"kind"`
-	Entries []CreditsEntry `json:"entries"`
-}
-
-type CreditsInventory struct {
-	Sources []CreditsSource `json:"sources"`
-}
-
-type CreditsOverlay struct {
-	ByOriginal map[string]CreditsEntry
-	ByOutput   map[string]CreditsEntry
-	Entries    []CreditsEntry
-}
-
-func ResolveFFmpeg() (string, error) {
-	return ResolveFFmpegWithConfig("")
-}
-
-func ResolveFFmpegWithConfig(configuredPath string) (string, error) {
-	if configured := strings.TrimSpace(configuredPath); configured != "" {
-		return configured, nil
-	}
-	if configured := strings.TrimSpace(os.Getenv("SOW_FFMPEG")); configured != "" {
-		return configured, nil
-	}
-	path, err := exec.LookPath("ffmpeg")
-	if err != nil {
-		return "", ffmpegMissingErr("ffmpeg")
-	}
-	return path, nil
-}
-
-func ResolveFFprobe() (string, error) {
-	return ResolveFFprobeWithConfig("")
-}
-
-func ResolveFFprobeWithConfig(configuredPath string) (string, error) {
-	if configured := strings.TrimSpace(configuredPath); configured != "" {
-		return configured, nil
-	}
-	if configured := strings.TrimSpace(os.Getenv("SOW_FFPROBE")); configured != "" {
-		return configured, nil
-	}
-	path, err := exec.LookPath("ffprobe")
-	if err != nil {
-		return "", ffmpegMissingErr("ffprobe")
-	}
-	return path, nil
-}
-
-// ffmpegMissingErr renders an actionable, cross-platform "tool not found"
-// message. Only the music builder needs ffmpeg/ffprobe; every other builder
-// runs with zero external dependencies.
-func ffmpegMissingErr(tool string) error {
-	return fmt.Errorf(`%[1]s not found on PATH.
-  Windows: winget install Gyan.FFmpeg
-  macOS:   brew install ffmpeg
-  Linux:   apt install ffmpeg   (or your distro's package manager)
-Only the music builder needs %[1]s; set SOW_%[2]s to a full path to override.`,
-		tool, strings.ToUpper(tool))
-}
-
-func IsMusicAssetPath(rel string) bool {
-	rel = filepath.ToSlash(strings.TrimSpace(rel))
-	return rel == "envi/music" || strings.HasPrefix(rel, "envi/music/")
-}
-
-func PathIsUnder(root, rel string) bool {
-	root = TrimSlashes(filepath.ToSlash(root))
-	rel = TrimSlashes(filepath.ToSlash(rel))
-	if root == "" || rel == "" {
-		return false
-	}
-	return rel == root || strings.HasPrefix(rel, root+"/")
-}
-
-func PrefixForDir(prefixes map[string]string, dir string) string {
-	dir = TrimSlashes(filepath.ToSlash(dir))
-	bestPrefix := ""
-	bestLen := -1
-	keys := make([]string, 0, len(prefixes))
-	for key := range prefixes {
-		keys = append(keys, key)
-	}
-	sort.Strings(keys)
-	for _, key := range keys {
-		value := prefixes[key]
-		normalizedKey := TrimSlashes(filepath.ToSlash(key))
-		if normalizedKey == "" {
-			continue
-		}
-		if dir != normalizedKey && !strings.HasPrefix(dir, normalizedKey+"/") {
-			continue
-		}
-		if len(normalizedKey) > bestLen {
-			bestLen = len(normalizedKey)
-			bestPrefix = SanitizePrefix(value)
-		}
-	}
-	return bestPrefix
-}
-
-func SanitizePrefix(prefix string) string {
-	prefix = strings.ToLower(strings.TrimSpace(prefix))
-	var builder strings.Builder
-	for _, r := range prefix {
-		switch {
-		case r >= 'a' && r <= 'z':
-			builder.WriteRune(r)
-		case r >= '0' && r <= '9':
-			builder.WriteRune(r)
-		case r == '_':
-			builder.WriteRune(r)
-		}
-	}
-	result := builder.String()
-	if strings.TrimSpace(prefix) != "" && strings.HasSuffix(strings.TrimSpace(prefix), "_") && !strings.HasSuffix(result, "_") {
-		result += "_"
-	}
-	return result
-}
-
-func TrimSlashes(value string) string {
-	return strings.Trim(strings.TrimSpace(value), "/")
-}
-
-func Min(a, b int) int {
-	if a < b {
-		return a
-	}
-	return b
-}
-
-func Max(a, b int) int {
-	if a > b {
-		return a
-	}
-	return b
-}
-
-func FirstNonEmpty(values ...string) string {
-	for _, value := range values {
-		if strings.TrimSpace(value) != "" {
-			return strings.TrimSpace(value)
-		}
-	}
-	return ""
-}
-
-func JoinNonEmpty(sep string, values ...string) string {
-	parts := make([]string, 0, len(values))
-	for _, value := range values {
-		value = strings.TrimSpace(value)
-		if value != "" {
-			parts = append(parts, value)
-		}
-	}
-	return strings.Join(parts, sep)
-}
@@ -1,368 +0,0 @@
-package music
-
-import (
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-)
-
-func TestUniqueNameHandlesShortStemCollisions(t *testing.T) {
-	used := map[string]struct{}{
-		"mus_wg_mystc": {},
-	}
-
-	got := UniqueName("mus_wg_mystc", used)
-	if got == "mus_wg_mystc" || len(got) > MaxStemLen {
-		t.Fatalf("collision result must be distinct and valid, got %q", got)
-	}
-	if _, ok := used[got]; !ok {
-		t.Fatalf("collision result was not reserved: %q", got)
-	}
-}
-
-func TestUniqueNameNoCollision(t *testing.T) {
-	used := map[string]struct{}{}
-	got := UniqueName("new_stem", used)
-	if got != "new_stem" {
-		t.Fatalf("expected 'new_stem', got %q", got)
-	}
-}
-
-func TestUniqueNameMultipleCollisions(t *testing.T) {
-	used := map[string]struct{}{
-		"stem":   {},
-		"stem_1": {},
-		"stem_2": {},
-	}
-	got := UniqueName("stem", used)
-	if _, collided := map[string]bool{"stem": true, "stem_1": true, "stem_2": true}[got]; collided {
-		t.Fatalf("expected an unused collision result, got %q", got)
-	}
-	if _, ok := used[got]; !ok {
-		t.Fatalf("collision result was not reserved: %q", got)
-	}
-}
-
-func TestGenerateStem(t *testing.T) {
-	used := map[string]struct{}{
-		"existing": {},
-	}
-	stem, err := GenerateStem("My Cool Track.mp3", "mus_", used)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if stem == "" {
-		t.Fatal("expected non-empty stem")
-	}
-	if len(stem) > MaxStemLen {
-		t.Fatalf("stem %q exceeds max length %d", stem, MaxStemLen)
-	}
-	if _, exists := used[stem]; !exists {
-		t.Fatal("expected stem to be registered in used set")
-	}
-}
-
-func TestGenerateStemPrefixTooLong(t *testing.T) {
-	_, err := GenerateStem("test.mp3", "this_prefix_is_way_too_long_for_stem_", nil)
-	if err == nil {
-		t.Fatal("expected error for too-long prefix")
-	}
-}
-
-func TestSlugWordsStripsBrackets(t *testing.T) {
-	words := SlugWords("Song [Explicit] (Remix)")
-	for _, w := range words {
-		if w == "explicit" || w == "remix" {
-			t.Fatalf("bracket content should be removed, got word %q", w)
-		}
-	}
-}
-
-func TestSanitizePrefix(t *testing.T) {
-	for _, input := range []string{"Mus_WG_", "  Test  "} {
-		got := SanitizePrefix(input)
-		if got == "" || got != strings.ToLower(got) || strings.ContainsAny(got, " \t\r\n") {
-			t.Errorf("sanitized prefix contains uppercase or whitespace: %q", got)
-		}
-	}
-	if got := SanitizePrefix(""); got != "" {
-		t.Fatalf("expected empty prefix, got %q", got)
-	}
-}
-
-func TestReserveName(t *testing.T) {
-	used := map[string]struct{}{}
-	if err := ReserveName("testname", used); err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if _, exists := used["testname"]; !exists {
-		t.Fatal("expected name to be reserved")
-	}
-	if err := ReserveName("testname", used); err == nil {
-		t.Fatal("expected error for duplicate name")
-	}
-}
-
-func TestValidateManualOutputFile(t *testing.T) {
-	if err := ValidateManualOutputFile("test.bmu"); err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if err := ValidateManualOutputFile("test.txt"); err == nil {
-		t.Fatal("expected error for non-bmu extension")
-	}
-	if err := ValidateManualOutputFile(".bmu"); err == nil {
-		t.Fatal("expected error for empty stem")
-	}
-}
-
-func TestParseCreditsMarkdownMissingFile(t *testing.T) {
-	entries, err := ParseCreditsMarkdown("nonexistent.md")
-	if err != nil {
-		t.Fatalf("unexpected error for missing file: %v", err)
-	}
-	if entries != nil {
-		t.Fatalf("expected nil entries for missing file, got %v", entries)
-	}
-}
-
-func TestParseCreditsMarkdownRealContent(t *testing.T) {
-	content := "# Header\n\n| Artist | Title | Output File | Original File | Album | Date | License / Copyright | Notes |\n|---|---|---|---|---|---|---|---|\n| Test Artist | Test Title | `output.bmu` | `original.mp3` | Test Album | 2024 | MIT | test |\n"
-	path := filepath.Join(t.TempDir(), "CREDITS.md")
-	if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
-		t.Fatalf("write test credits: %v", err)
-	}
-
-	entries, err := ParseCreditsMarkdown(path)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if len(entries) != 1 {
-		t.Fatalf("expected 1 entry, got %d", len(entries))
-	}
-	if entries[0].Artist != "Test Artist" {
-		t.Fatalf("expected 'Test Artist', got %q", entries[0].Artist)
-	}
-	if entries[0].Title != "Test Title" {
-		t.Fatalf("expected 'Test Title', got %q", entries[0].Title)
-	}
-	if entries[0].OutputFile != "output.bmu" {
-		t.Fatalf("expected 'output.bmu', got %q", entries[0].OutputFile)
-	}
-}
-
-func TestRenderCreditsMarkdown(t *testing.T) {
-	entries := []CreditsEntry{
-		{
-			Artist:       "Test Artist",
-			Title:        "Test Title",
-			OutputFile:   "output.bmu",
-			OriginalFile: "original.mp3",
-			Album:        "Test Album",
-			Date:         "2024",
-			Rights:       "MIT",
-			Notes:        "test note",
-		},
-	}
-
-	result := RenderCreditsMarkdown(entries)
-	if !strings.Contains(result, "Test Artist") {
-		t.Fatal("expected rendered output to contain artist")
-	}
-	if !strings.Contains(result, "output.bmu") {
-		t.Fatal("expected rendered output to contain output file")
-	}
-}
-
-func TestParseCreditsOverlay(t *testing.T) {
-	content := "# Header\n\n| Artist | Title | Output File | Original File |\n|---|---|---|---|\n| Overlay Artist | Ovr Title | `override.bmu` | `original.mp3` |\n"
-	path := filepath.Join(t.TempDir(), "CREDITS.md")
-	if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
-		t.Fatalf("write test overlay: %v", err)
-	}
-
-	overlay, err := ParseCreditsOverlay(path)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if len(overlay.Entries) != 1 {
-		t.Fatalf("expected 1 overlay entry, got %d", len(overlay.Entries))
-	}
-
-	matched := overlay.Match("original.mp3", "")
-	if matched == nil {
-		t.Fatal("expected overlay match by original file")
-	}
-	if matched.Artist != "Overlay Artist" {
-		t.Fatalf("expected 'Overlay Artist', got %q", matched.Artist)
-	}
-}
-
-func TestApplyCreditsOverlay(t *testing.T) {
-	entry := &CreditsEntry{
-		Artist: "Original Artist",
-		Title:  "Original Title",
-	}
-	overlay := &CreditsEntry{
-		Artist: "Overlay Artist",
-	}
-
-	ApplyCreditsOverlay(entry, overlay)
-	if entry.Artist != "Overlay Artist" {
-		t.Fatalf("expected 'Overlay Artist', got %q", entry.Artist)
-	}
-	if entry.Title != "Original Title" {
-		t.Fatalf("expected 'Original Title' preserved, got %q", entry.Title)
-	}
-
-	ApplyCreditsOverlay(entry, nil)
-	if entry.Artist != "Overlay Artist" {
-		t.Fatalf("expected nil overlay to be no-op, got %q", entry.Artist)
-	}
-}
-
-func TestValidateOverlayEntries(t *testing.T) {
-	generated := []CreditsEntry{
-		{OriginalFile: "track1.mp3", OutputFile: "track1.bmu"},
-	}
-	overlay := CreditsOverlay{
-		Entries: []CreditsEntry{
-			{OriginalFile: "track1.mp3"},
-		},
-	}
-	if err := ValidateOverlayEntries("test", overlay, generated); err != nil {
-		t.Fatalf("unexpected validation error: %v", err)
-	}
-
-	badOverlay := CreditsOverlay{
-		Entries: []CreditsEntry{
-			{OriginalFile: "nonexistent.mp3"},
-		},
-	}
-	if err := ValidateOverlayEntries("test", badOverlay, generated); err == nil {
-		t.Fatal("expected validation error for unknown original file")
-	}
-}
-
-func TestIsMusicAssetPath(t *testing.T) {
-	if !IsMusicAssetPath("envi/music") {
-		t.Fatal("expected 'envi/music' to be music path")
-	}
-	if !IsMusicAssetPath("envi/music/westgate") {
-		t.Fatal("expected 'envi/music/westgate' to be music path")
-	}
-	if IsMusicAssetPath("envi/textures") {
-		t.Fatal("expected 'envi/textures' not to be music path")
-	}
-	if IsMusicAssetPath("") {
-		t.Fatal("expected empty string not to be music path")
-	}
-}
-
-func TestEscapeMarkdownCell(t *testing.T) {
-	result := EscapeMarkdownCell("a|b\nc")
-	if !strings.Contains(result, `\|`) {
-		t.Fatal("expected pipe to be escaped")
-	}
-	if !strings.Contains(result, "<br>") {
-		t.Fatal("expected newline to be replaced with <br>")
-	}
-}
-
-func TestSyncGeneratedCreditsArtifactsWritesNewFiles(t *testing.T) {
-	root := t.TempDir()
-	desired := map[string][]byte{
-		filepath.Join(root, "test.md"): []byte("content"),
-	}
-	changed, err := SyncGeneratedCreditsArtifacts(root, desired)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if changed != 1 {
-		t.Fatalf("expected 1 changed file, got %d", changed)
-	}
-}
-
-func TestSyncGeneratedCreditsArtifactsNoChanges(t *testing.T) {
-	root := t.TempDir()
-	path := filepath.Join(root, "test.md")
-	if err := os.WriteFile(path, []byte("content"), 0o644); err != nil {
-		t.Fatalf("write file: %v", err)
-	}
-	desired := map[string][]byte{
-		path: []byte("content"),
-	}
-	changed, err := SyncGeneratedCreditsArtifacts(root, desired)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if changed != 0 {
-		t.Fatalf("expected 0 changed files, got %d", changed)
-	}
-}
-
-func TestSyncGeneratedCreditsArtifactsRemovesStale(t *testing.T) {
-	root := t.TempDir()
-	stalePath := filepath.Join(root, "stale.md")
-	if err := os.WriteFile(stalePath, []byte("stale"), 0o644); err != nil {
-		t.Fatalf("write stale file: %v", err)
-	}
-	desired := map[string][]byte{}
-	changed, err := SyncGeneratedCreditsArtifacts(root, desired)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if changed != 1 {
-		t.Fatalf("expected 1 removed file, got %d", changed)
-	}
-}
-
-func TestPrefixForDir(t *testing.T) {
-	prefixes := map[string]string{
-		"envi/music/westgate": "mus_wg_",
-	}
-	if got := PrefixForDir(prefixes, "envi/music/westgate"); got != "mus_wg_" {
-		t.Fatalf("expected 'mus_wg_', got %q", got)
-	}
-	if got := PrefixForDir(prefixes, "envi/music/other"); got != "" {
-		t.Fatalf("expected empty prefix, got %q", got)
-	}
-	if got := PrefixForDir(nil, "envi/music"); got != "" {
-		t.Fatalf("expected empty prefix for nil map, got %q", got)
-	}
-}
-
-func TestResolveFFmpegEnv(t *testing.T) {
-	t.Setenv("SOW_FFMPEG", "/custom/ffmpeg")
-	path, err := ResolveFFmpeg()
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if path != "/custom/ffmpeg" {
-		t.Fatalf("expected '/custom/ffmpeg', got %q", path)
-	}
-}
-
-func TestResolveFFprobeEnv(t *testing.T) {
-	t.Setenv("SOW_FFPROBE", "/custom/ffprobe")
-	path, err := ResolveFFprobe()
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if path != "/custom/ffprobe" {
-		t.Fatalf("expected '/custom/ffprobe', got %q", path)
-	}
-}
-
-func TestFFmpegMissingErrHasInstallHints(t *testing.T) {
-	msg := ffmpegMissingErr("ffmpeg").Error()
-	for _, want := range []string{"ffmpeg", "SOW_FFMPEG"} {
-		if !strings.Contains(msg, want) {
-			t.Errorf("ffmpeg error missing %q; got:\n%s", want, msg)
-		}
-	}
-	probe := ffmpegMissingErr("ffprobe").Error()
-	if !strings.Contains(probe, "SOW_FFPROBE") {
-		t.Errorf("ffprobe error should mention SOW_FFPROBE; got:\n%s", probe)
-	}
-}
@@ -1,197 +0,0 @@
-package music
-
-import (
-	"crypto/sha1"
-	"fmt"
-	"path/filepath"
-	"strings"
-)
-
-func GenerateStem(fileName, prefix string, used map[string]struct{}) (string, error) {
-	return GenerateStemWithMax(fileName, prefix, MaxStemLen, used)
-}
-
-func GenerateStemWithMax(fileName, prefix string, maxStemLen int, used map[string]struct{}) (string, error) {
-	if maxStemLen <= 0 {
-		maxStemLen = MaxStemLen
-	}
-	maxCore := maxStemLen - len(prefix)
-	if maxCore < 3 {
-		return "", fmt.Errorf("prefix too long: %q", prefix)
-	}
-	base := strings.TrimSuffix(fileName, filepath.Ext(fileName))
-	words := SlugWords(base)
-	core := MakeMusicCore(words, maxCore)
-	if core == "" {
-		sum := sha1.Sum([]byte(fileName))
-		core = fmt.Sprintf("%x", sum[:])[:maxCore]
-	}
-	stem := strings.TrimRight((prefix + core)[:Min(maxStemLen, len(prefix)+len(core))], "_")
-	if stem == "" {
-		return "", fmt.Errorf("could not derive music stem for %s", fileName)
-	}
-	return UniqueNameWithMax(stem, maxStemLen, used), nil
-}
-
-func SlugWords(value string) []string {
-	value = BracketRE.ReplaceAllString(value, " ")
-	value = strings.ReplaceAll(value, "&", " and ")
-	value = strings.ReplaceAll(value, "'", "")
-	value = strings.ReplaceAll(value, "\u2019", "")
-	value = strings.ToLower(value)
-	var ascii strings.Builder
-	for _, r := range value {
-		switch {
-		case r >= 'a' && r <= 'z':
-			ascii.WriteRune(r)
-		case r >= '0' && r <= '9':
-			ascii.WriteRune(r)
-		default:
-			ascii.WriteRune(' ')
-		}
-	}
-	rawWords := SplitRE.Split(ascii.String(), -1)
-	words := make([]string, 0, len(rawWords))
-	for _, word := range rawWords {
-		if word == "" {
-			continue
-		}
-		if _, drop := DropWords[word]; drop {
-			continue
-		}
-		if YearRE.MatchString(word) {
-			continue
-		}
-		words = append(words, word)
-	}
-	return words
-}
-
-func MakeMusicCore(words []string, maxCore int) string {
-	core := ""
-	for _, word := range words {
-		candidate := word
-		if core != "" {
-			candidate = core + "_" + word
-		}
-		if len(candidate) <= maxCore {
-			core = candidate
-			continue
-		}
-		break
-	}
-	if core != "" {
-		return core
-	}
-	abbrev := make([]string, 0, Min(4, len(words)))
-	for _, word := range words {
-		if len(abbrev) == 4 {
-			break
-		}
-		abbrev = append(abbrev, AbbreviateWord(word, 5))
-	}
-	for _, word := range abbrev {
-		candidate := word
-		if core != "" {
-			candidate = core + "_" + word
-		}
-		if len(candidate) <= maxCore {
-			core = candidate
-			continue
-		}
-		break
-	}
-	if core != "" {
-		return core
-	}
-	if len(words) > 0 {
-		return strings.Trim(words[0][:Min(maxCore, len(words[0]))], "_")
-	}
-	return ""
-}
-
-func AbbreviateWord(word string, maxLen int) string {
-	if len(word) <= maxLen {
-		return word
-	}
-	consonants := VowelRE.ReplaceAllString(word, "")
-	candidate := word[:1]
-	if len(consonants) > 1 {
-		candidate += consonants[1:]
-	}
-	if len(candidate) >= 3 {
-		return candidate[:Min(maxLen, len(candidate))]
-	}
-	return word[:Min(maxLen, len(word))]
-}
-
-func UniqueName(stem string, used map[string]struct{}) string {
-	return UniqueNameWithMax(stem, MaxStemLen, used)
-}
-
-func UniqueNameWithMax(stem string, maxStemLen int, used map[string]struct{}) string {
-	if maxStemLen <= 0 {
-		maxStemLen = MaxStemLen
-	}
-	if _, exists := used[stem]; !exists {
-		used[stem] = struct{}{}
-		return stem
-	}
-	for index := 1; ; index++ {
-		suffix := fmt.Sprintf("_%d", index)
-		prefixLen := Min(len(stem), Max(0, maxStemLen-len(suffix)))
-		candidate := strings.TrimRight(stem[:prefixLen], "_") + suffix
-		if _, exists := used[candidate]; exists {
-			continue
-		}
-		used[candidate] = struct{}{}
-		return candidate
-	}
-}
-
-func ReserveName(stem string, used map[string]struct{}) error {
-	stem = strings.ToLower(strings.TrimSpace(stem))
-	if stem == "" {
-		return fmt.Errorf("output filename is empty")
-	}
-	if _, exists := used[stem]; exists {
-		return fmt.Errorf("output filename %s collides with an existing asset", stem)
-	}
-	used[stem] = struct{}{}
-	return nil
-}
-
-func ValidateManualOutputFile(name string) error {
-	return ValidateManualOutputFileWithRules(name, ".bmu", MaxStemLen)
-}
-
-func ValidateManualOutputFileWithRules(name, extension string, maxStemLen int) error {
-	name = strings.ToLower(strings.TrimSpace(name))
-	extension = strings.ToLower(strings.TrimSpace(extension))
-	if extension == "" {
-		extension = ".bmu"
-	}
-	if maxStemLen <= 0 {
-		maxStemLen = MaxStemLen
-	}
-	if !strings.HasSuffix(name, extension) {
-		return fmt.Errorf("output file must end with %s", extension)
-	}
-	stem := strings.TrimSuffix(name, extension)
-	if stem == "" {
-		return fmt.Errorf("output file stem is empty")
-	}
-	if len(stem) > maxStemLen {
-		return fmt.Errorf("output file stem %q exceeds %d characters", stem, maxStemLen)
-	}
-	for _, r := range stem {
-		switch {
-		case r >= 'a' && r <= 'z':
-		case r >= '0' && r <= '9':
-		case r == '_':
-		default:
-			return fmt.Errorf("output file stem %q contains unsupported character %q", stem, string(r))
-		}
-	}
-	return nil
-}
@@ -26,8 +26,6 @@ type BuildResult struct {
 	HAKPaths             []string
 	Manifest             string
 	AutogenManifestPaths []string
-	CreditsArtifactPaths []string
-	CreditsSummary       CreditsRefreshSummary
 	HAKSummary           HAKArchiveSummary
 	Resources            int
 	HAKAssets            int
@@ -36,21 +34,6 @@ type BuildResult struct {
 	TopPackageFiles      int
 }

-type CreditsRefreshSummary struct {
-	ScannedDirs    []string
-	TrackCount     int
-	ArtifactPaths  []string
-	GeneratedPaths []string
-	InventoryPath  string
-	ChangedFiles   int
-	Mappings       []MusicFileMapping
-}
-
-type MusicFileMapping struct {
-	Source string
-	Output string
-}
-
 type HAKArchiveSummary struct {
 	Total   int
 	Reused  int
@@ -110,8 +93,6 @@ type BuildHAKOptions struct {
 	ArchiveNames         []string
 	SourceManifestPath   string
 	ContentAddressedRoot string
-	SkipMusic            bool
-	MusicDatasetIDs      []string
 }

 func Build(p *project.Project) (BuildResult, error) {
@@ -241,26 +222,11 @@ func planOrBuildHAKs(p *project.Project, progress ProgressFunc, writeArchives bo
 	if err != nil {
 		return BuildResult{}, err
 	}
-	musicAssets := &preparedMusicAssets{SkipSourceRel: map[string]struct{}{}}
-	if !opts.SkipMusic {
-		musicAssets, err = prepareMusicAssetsWithOptions(p, musicPrepareOptions{
-			datasetIDs: opts.MusicDatasetIDs,
-			write:      writeArchives,
-		})
-		if err != nil {
-			return BuildResult{}, err
-		}
-	}
-	defer func() {
-		if cleanupErr := cleanupPreparedMusicAssets(musicAssets); cleanupErr != nil && err == nil {
-			err = cleanupErr
-		}
-	}()
 	generated2DAAssets, err := topdata.BuildGenerated2DAAssets(p, progress)
 	if err != nil {
 		return BuildResult{}, err
 	}
-	assetResources, err := collectAssetResources(p, false, allowedAssets, musicAssets, generated2DAAssets)
+	assetResources, err := collectAssetResources(p, false, allowedAssets, generated2DAAssets)
 	if err != nil {
 		return BuildResult{}, err
 	}
@@ -277,8 +243,6 @@ func planOrBuildHAKs(p *project.Project, progress ProgressFunc, writeArchives bo
 	}

 	result = BuildResult{HAKAssets: len(assetResources)}
-	result.CreditsArtifactPaths = append(result.CreditsArtifactPaths, musicAssets.Artifacts...)
-	result.CreditsSummary = musicAssets.Summary
 	if err := writeAutogenManifestOutputs(progress, autogenManifests); err != nil {
 		return BuildResult{}, err
 	}
@@ -410,8 +374,8 @@ func planOrBuildHAKs(p *project.Project, progress ProgressFunc, writeArchives bo
 }

 // buildDirectHAKs packages HAKs directly from the content-addressed source blob
-// cache. It skips music preparation, generated 2da discovery, git creation-time
-// lookups, LFS discovery, and any materialized asset tree scan.
+// cache. It skips generated 2da discovery, git creation-time lookups, LFS
+// discovery, and any materialized asset tree scan.
 func buildDirectHAKs(p *project.Project, progress ProgressFunc, writeArchives bool, manifest *SourceBuildManifest, opts BuildHAKOptions) (BuildResult, error) {
 	progressf(progress, "Collecting asset resources...")
 	assetResources, err := collectDirectSourceResources(manifest, opts.ContentAddressedRoot)
@@ -651,7 +615,7 @@ func collectModuleResources(p *project.Project, moduleHakOrder []string) ([]erf.
 	return moduleResources, nil
 }

-func collectAssetResources(p *project.Project, requireContent bool, allowed map[string]struct{}, musicAssets *preparedMusicAssets, generated2DAAssets []topdata.Generated2DAAsset) ([]assetResource, error) {
+func collectAssetResources(p *project.Project, requireContent bool, allowed map[string]struct{}, generated2DAAssets []topdata.Generated2DAAsset) ([]assetResource, error) {
 	var hakResources []assetResource
 	assetCreatedAt, err := collectGitAssetCreationTimes(p)
 	if err != nil {
@@ -674,11 +638,6 @@ func collectAssetResources(p *project.Project, requireContent bool, allowed map[
 	}

 	for _, rel := range p.Inventory.AssetFiles {
-		if musicAssets != nil {
-			if _, skip := musicAssets.SkipSourceRel[filepath.ToSlash(rel)]; skip {
-				continue
-			}
-		}
 		if len(allowed) > 0 {
 			if _, ok := allowed[filepath.ToSlash(rel)]; !ok {
 				continue
@@ -706,16 +665,6 @@ func collectAssetResources(p *project.Project, requireContent bool, allowed map[
 			ContentID: resourceInfo.ContentID,
 		})
 	}
-	if musicAssets != nil {
-		for _, asset := range musicAssets.Generated {
-			if len(allowed) > 0 {
-				if _, ok := allowed[filepath.ToSlash(asset.Rel)]; !ok {
-					continue
-				}
-			}
-			hakResources = append(hakResources, asset)
-		}
-	}
 	for _, asset := range generated2DAAssets {
 		rel := filepath.ToSlash(asset.Rel)
 		if len(allowed) > 0 {
@@ -1617,20 +1566,11 @@ func plannedModuleHAKOrder(p *project.Project) (order []string, err error) {
 		return append([]string(nil), manifest.ModuleHAKs...), nil
 	}

-	musicAssets, err := prepareMusicAssets(p)
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		if cleanupErr := cleanupPreparedMusicAssets(musicAssets); cleanupErr != nil && err == nil {
-			err = cleanupErr
-		}
-	}()
 	generated2DAAssets, err := topdata.BuildGenerated2DAAssets(p, nil)
 	if err != nil {
 		return nil, err
 	}
-	assetResources, err := collectAssetResources(p, false, nil, musicAssets, generated2DAAssets)
+	assetResources, err := collectAssetResources(p, false, nil, generated2DAAssets)
 	if err != nil {
 		return nil, err
 	}
@@ -223,7 +223,7 @@ func ensureBuildIsCurrent(p *project.Project, modulePath string, hakPaths []stri
 	}

 	if !newestSource.IsZero() && newestSource.After(oldestArchive) {
-		return fmt.Errorf("built archives are older than source file %s; run build-module or build-haks before compare", newestPath)
+		return fmt.Errorf("built archives are older than source file %s; run crucible module build or crucible hak build before compare", newestPath)
 	}
 	return nil
 }
@@ -1,529 +0,0 @@
-package pipeline
-
-import (
-	"encoding/json"
-	"fmt"
-	"os"
-	"path/filepath"
-	"sort"
-	"strings"
-
-	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/erf"
-	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/music"
-	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/project"
-)
-
-type preparedMusicAssets struct {
-	Generated     []assetResource
-	SkipSourceRel map[string]struct{}
-	Artifacts     []string
-	TempRoots     []string
-	Summary       CreditsRefreshSummary
-}
-
-type MusicBuildOptions struct {
-	DatasetIDs []string
-	Write      bool
-}
-
-type musicPrepareOptions struct {
-	datasetIDs []string
-	write      bool
-}
-
-type musicSourceGroup struct {
-	DatasetID string
-	Dataset   project.EffectiveMusicDataset
-	SourceDir string
-	OutputDir string
-	Sources   []string
-}
-
-type musicCreditGroup struct {
-	CreditsRoot string
-	SourceDir   string
-	Entries     []music.CreditsEntry
-}
-
-func musicRootPath(p *project.Project, path string) string {
-	if strings.TrimSpace(path) == "" {
-		return p.Root
-	}
-	if filepath.IsAbs(path) {
-		return path
-	}
-	return filepath.Join(p.Root, filepath.FromSlash(path))
-}
-
-func effectiveMusicDatasets(p *project.Project, onlyIDs []string) (map[string]project.EffectiveMusicDataset, error) {
-	effective := p.EffectiveConfig()
-	wanted := map[string]struct{}{}
-	for _, id := range onlyIDs {
-		id = strings.TrimSpace(id)
-		if id != "" {
-			wanted[id] = struct{}{}
-		}
-	}
-	datasets := map[string]project.EffectiveMusicDataset{}
-	for id, dataset := range effective.Music.Datasets {
-		if len(wanted) > 0 {
-			if _, ok := wanted[id]; !ok {
-				continue
-			}
-			delete(wanted, id)
-		}
-		datasets[id] = dataset
-	}
-	if len(wanted) > 0 {
-		unknown := make([]string, 0, len(wanted))
-		for id := range wanted {
-			unknown = append(unknown, id)
-		}
-		sort.Strings(unknown)
-		return nil, fmt.Errorf("unknown music dataset(s): %s", strings.Join(unknown, ", "))
-	}
-	if len(datasets) == 0 && len(wanted) == 0 {
-		for _, rel := range p.Inventory.AssetFiles {
-			ext := strings.ToLower(filepath.Ext(rel))
-			if !music.PathIsUnder("envi/music", rel) {
-				continue
-			}
-			if _, ok := extensionSet(effective.Music.ConvertExtensions)[ext]; ok {
-				datasets["legacy_envi_music"] = project.EffectiveMusicDataset{
-					Source:            "envi/music",
-					Output:            "envi/music",
-					StageRoot:         effective.Music.StageRoot,
-					CreditsRoot:       effective.Music.CreditsRoot,
-					NamingScheme:      effective.Music.NamingScheme,
-					OutputExtension:   effective.Music.OutputExtension,
-					MaxStemLength:     effective.Music.MaxStemLength,
-					PackageMode:       "hak_asset",
-					ConvertExtensions: effective.Music.ConvertExtensions,
-				}
-				break
-			}
-		}
-	}
-	return datasets, nil
-}
-
-func extensionSet(values []string) map[string]struct{} {
-	out := make(map[string]struct{}, len(values))
-	for _, value := range values {
-		value = strings.ToLower(strings.TrimSpace(value))
-		if value != "" {
-			out[value] = struct{}{}
-		}
-	}
-	return out
-}
-
-func datasetForMusicSource(datasets map[string]project.EffectiveMusicDataset, rel, ext string) (string, project.EffectiveMusicDataset, bool) {
-	bestID := ""
-	var best project.EffectiveMusicDataset
-	bestLen := -1
-	for id, dataset := range datasets {
-		if _, ok := extensionSet(dataset.ConvertExtensions)[ext]; !ok {
-			continue
-		}
-		if !music.PathIsUnder(dataset.Source, rel) {
-			continue
-		}
-		if len(dataset.Source) > bestLen {
-			bestID = id
-			best = dataset
-			bestLen = len(dataset.Source)
-		}
-	}
-	return bestID, best, bestID != ""
-}
-
-func plannedMusicAsset(outputRel, sourceRel string) (assetResource, error) {
-	extension := strings.TrimPrefix(strings.ToLower(filepath.Ext(outputRel)), ".")
-	resourceType, ok := erf.HAKResourceTypeForExtension(extension)
-	if !ok {
-		return assetResource{}, fmt.Errorf("unsupported generated music resource extension %q", filepath.Ext(outputRel))
-	}
-	name := strings.ToLower(strings.TrimSuffix(filepath.Base(outputRel), filepath.Ext(outputRel)))
-	return assetResource{
-		Rel: outputRel,
-		Resource: erf.Resource{
-			Name: name,
-			Type: resourceType,
-		},
-		ContentID: "music-plan:" + filepath.ToSlash(sourceRel),
-	}, nil
-}
-
-func BuildMusic(p *project.Project, opts MusicBuildOptions) (BuildResult, error) {
-	prepared, err := prepareMusicAssetsWithOptions(p, musicPrepareOptions{datasetIDs: opts.DatasetIDs, write: opts.Write})
-	if err != nil {
-		return BuildResult{}, err
-	}
-	if err := cleanupPreparedMusicAssets(prepared); err != nil {
-		return BuildResult{}, err
-	}
-	return BuildResult{
-		CreditsArtifactPaths: prepared.Artifacts,
-		CreditsSummary:       prepared.Summary,
-		HAKAssets:            len(prepared.Generated),
-	}, nil
-}
-
-func prepareMusicAssets(p *project.Project) (*preparedMusicAssets, error) {
-	return prepareMusicAssetsWithOptions(p, musicPrepareOptions{write: true})
-}
-
-func prepareMusicAssetsWithOptions(p *project.Project, opts musicPrepareOptions) (*preparedMusicAssets, error) {
-	usedNames := make(map[string]struct{})
-	groupsByKey := make(map[string]*musicSourceGroup)
-	datasets, err := effectiveMusicDatasets(p, opts.datasetIDs)
-	if err != nil {
-		return nil, err
-	}
-	for _, rel := range p.Inventory.AssetFiles {
-		rel = filepath.ToSlash(rel)
-		ext := strings.ToLower(filepath.Ext(rel))
-		name := strings.ToLower(strings.TrimSuffix(filepath.Base(rel), filepath.Ext(rel)))
-		if datasetID, dataset, ok := datasetForMusicSource(datasets, rel, ext); ok {
-			sourceDir := filepath.ToSlash(filepath.Dir(rel))
-			relDir, err := filepath.Rel(filepath.FromSlash(dataset.Source), filepath.FromSlash(sourceDir))
-			if err != nil {
-				return nil, fmt.Errorf("resolve music source directory %s: %w", sourceDir, err)
-			}
-			relDir = filepath.ToSlash(relDir)
-			outputDir := dataset.Output
-			if relDir != "." && relDir != "" {
-				outputDir = filepath.ToSlash(filepath.Join(outputDir, filepath.FromSlash(relDir)))
-			}
-			key := datasetID + "\x00" + sourceDir
-			group := groupsByKey[key]
-			if group == nil {
-				group = &musicSourceGroup{
-					DatasetID: datasetID,
-					Dataset:   dataset,
-					SourceDir: sourceDir,
-					OutputDir: outputDir,
-				}
-				groupsByKey[key] = group
-			}
-			group.Sources = append(group.Sources, rel)
-			continue
-		}
-		if name != "" {
-			usedNames[name] = struct{}{}
-		}
-	}
-
-	result := &preparedMusicAssets{
-		SkipSourceRel: make(map[string]struct{}),
-	}
-	if len(groupsByKey) == 0 {
-		if !opts.write {
-			return result, nil
-		}
-		writeResult, err := writeCreditsArtifacts(p, nil)
-		if err != nil {
-			return nil, err
-		}
-		result.Artifacts = writeResult.Artifacts
-		result.Summary = writeResult.Summary
-		return result, nil
-	}
-
-	groups := make([]*musicSourceGroup, 0, len(groupsByKey))
-	for _, group := range groupsByKey {
-		sort.Strings(group.Sources)
-		groups = append(groups, group)
-	}
-	sort.Slice(groups, func(i, j int) bool {
-		if groups[i].SourceDir != groups[j].SourceDir {
-			return groups[i].SourceDir < groups[j].SourceDir
-		}
-		return groups[i].DatasetID < groups[j].DatasetID
-	})
-
-	creditGroups := make([]musicCreditGroup, 0, len(groups))
-	for _, group := range groups {
-		result.Summary.ScannedDirs = append(result.Summary.ScannedDirs, group.SourceDir)
-		result.Summary.TrackCount += len(group.Sources)
-	}
-	ffmpegPath := ""
-	ffprobePath := ""
-	if opts.write {
-		var err error
-		ffmpegPath, err = music.ResolveFFmpegWithConfig(p.MusicFFmpegPath())
-		if err != nil {
-			return nil, err
-		}
-		ffprobePath, err = music.ResolveFFprobeWithConfig(p.MusicFFprobePath())
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	for _, group := range groups {
-		stageRoot := musicRootPath(p, group.Dataset.StageRoot)
-		result.TempRoots = append(result.TempRoots, stageRoot)
-		prefix := music.SanitizePrefix(group.Dataset.Prefix)
-		overlayPath := filepath.Join(p.AssetsDir(), filepath.FromSlash(group.SourceDir), p.EffectiveConfig().Music.CreditsOverlay)
-		overlay, err := music.ParseCreditsOverlay(overlayPath)
-		if err != nil {
-			return nil, fmt.Errorf("parse credits overlay %s: %w", overlayPath, err)
-		}
-
-		entries := make([]music.CreditsEntry, 0, len(group.Sources))
-		for _, rel := range group.Sources {
-			base := filepath.Base(rel)
-			manual := overlay.Match(base, "")
-			outputFile := ""
-			switch {
-			case manual != nil && strings.TrimSpace(manual.OutputFile) != "":
-				outputFile = strings.ToLower(strings.TrimSpace(manual.OutputFile))
-				if err := music.ValidateManualOutputFileWithRules(outputFile, group.Dataset.OutputExtension, group.Dataset.MaxStemLength); err != nil {
-					return nil, fmt.Errorf("manual credits output for %s: %w", rel, err)
-				}
-				if err := music.ReserveName(strings.TrimSuffix(outputFile, filepath.Ext(outputFile)), usedNames); err != nil {
-					return nil, fmt.Errorf("manual credits output for %s: %w", rel, err)
-				}
-			default:
-				stem, err := music.GenerateStemWithMax(base, prefix, group.Dataset.MaxStemLength, usedNames)
-				if err != nil {
-					return nil, fmt.Errorf("generate music name for %s: %w", rel, err)
-				}
-				outputFile = stem + group.Dataset.OutputExtension
-			}
-			outputRel := filepath.ToSlash(filepath.Join(group.OutputDir, outputFile))
-			result.Summary.Mappings = append(result.Summary.Mappings, MusicFileMapping{
-				Source: rel,
-				Output: outputRel,
-			})
-			result.SkipSourceRel[rel] = struct{}{}
-
-			if !opts.write {
-				if group.Dataset.PackageMode == "hak_asset" {
-					asset, err := plannedMusicAsset(outputRel, rel)
-					if err != nil {
-						return nil, err
-					}
-					result.Generated = append(result.Generated, asset)
-				}
-				continue
-			}
-
-			metadata, err := music.ProbeMetadata(ffprobePath, filepath.Join(p.AssetsDir(), filepath.FromSlash(rel)))
-			if err != nil {
-				return nil, fmt.Errorf("probe music metadata for %s: %w", rel, err)
-			}
-			entry := music.CreditsEntry{
-				Artist:       metadata.Artist,
-				Title:        music.FirstNonEmpty(metadata.Title, strings.TrimSuffix(base, filepath.Ext(base))),
-				OutputFile:   outputFile,
-				OriginalFile: base,
-				Album:        metadata.Album,
-				Date:         metadata.Date,
-				Rights:       music.FirstNonEmpty(metadata.Rights, music.JoinNonEmpty("; ", metadata.License, metadata.Copyright)),
-				Notes:        music.FirstNonEmpty(metadata.Notes, metadata.Comment),
-			}
-			music.ApplyCreditsOverlay(&entry, manual)
-
-			stagePath := filepath.Join(stageRoot, filepath.FromSlash(outputRel))
-			if err := os.MkdirAll(filepath.Dir(stagePath), 0o755); err != nil {
-				return nil, fmt.Errorf("create music stage dir: %w", err)
-			}
-			if err := music.ConvertSource(ffmpegPath, filepath.Join(p.AssetsDir(), filepath.FromSlash(rel)), stagePath); err != nil {
-				return nil, fmt.Errorf("convert music %s: %w", rel, err)
-			}
-			if group.Dataset.PackageMode == "hak_asset" {
-				resourceInfo, err := assetResourceFromPath(stagePath, outputRel, lfsAssetInfo{}, false)
-				if err != nil {
-					return nil, fmt.Errorf("load converted music %s: %w", outputRel, err)
-				}
-				info, err := os.Stat(stagePath)
-				if err != nil {
-					return nil, fmt.Errorf("stat converted music %s: %w", stagePath, err)
-				}
-				result.Generated = append(result.Generated, assetResource{
-					Rel:       outputRel,
-					Resource:  resourceInfo.Resource,
-					Size:      erf.ArchiveSize([]erf.Resource{resourceInfo.Resource}),
-					CreatedAt: info.ModTime(),
-					ContentID: resourceInfo.ContentID,
-				})
-			}
-			entries = append(entries, entry)
-		}
-		if opts.write {
-			if err := music.ValidateOverlayEntries(group.SourceDir, overlay, entries); err != nil {
-				return nil, err
-			}
-			creditGroups = append(creditGroups, musicCreditGroup{
-				CreditsRoot: group.Dataset.CreditsRoot,
-				SourceDir:   group.SourceDir,
-				Entries:     entries,
-			})
-		}
-	}
-
-	if !opts.write {
-		sort.Slice(result.Generated, func(i, j int) bool {
-			return compareResourceKeys(result.Generated[i].Resource, result.Generated[j].Resource) < 0
-		})
-		return result, nil
-	}
-
-	writeResult, err := writeCreditsArtifacts(p, creditGroups)
-	if err != nil {
-		return nil, err
-	}
-	writeResult.Summary.ScannedDirs = append(writeResult.Summary.ScannedDirs, result.Summary.ScannedDirs...)
-	writeResult.Summary.TrackCount = result.Summary.TrackCount
-	result.Artifacts = writeResult.Artifacts
-	result.Summary = writeResult.Summary
-	sort.Slice(result.Generated, func(i, j int) bool {
-		return compareResourceKeys(result.Generated[i].Resource, result.Generated[j].Resource) < 0
-	})
-	return result, nil
-}
-
-type creditsArtifactWriteResult struct {
-	Artifacts []string
-	Summary   CreditsRefreshSummary
-}
-
-func writeCreditsArtifacts(p *project.Project, generated []musicCreditGroup) (creditsArtifactWriteResult, error) {
-	defaultCreditsRoot := p.CreditsDir()
-	sources := make([]music.CreditsSource, 0)
-	desiredByRoot := map[string]map[string][]byte{}
-	summary := CreditsRefreshSummary{}
-	if generated != nil {
-		sort.Slice(generated, func(i, j int) bool {
-			if generated[i].SourceDir != generated[j].SourceDir {
-				return generated[i].SourceDir < generated[j].SourceDir
-			}
-			return generated[i].CreditsRoot < generated[j].CreditsRoot
-		})
-		for _, group := range generated {
-			creditsRoot := musicRootPath(p, group.CreditsRoot)
-			if desiredByRoot[creditsRoot] == nil {
-				desiredByRoot[creditsRoot] = map[string][]byte{}
-			}
-			entries := append([]music.CreditsEntry(nil), group.Entries...)
-			sort.Slice(entries, func(i, j int) bool {
-				if strings.ToLower(entries[i].Artist) != strings.ToLower(entries[j].Artist) {
-					return strings.ToLower(entries[i].Artist) < strings.ToLower(entries[j].Artist)
-				}
-				if strings.ToLower(entries[i].Title) != strings.ToLower(entries[j].Title) {
-					return strings.ToLower(entries[i].Title) < strings.ToLower(entries[j].Title)
-				}
-				return strings.ToLower(entries[i].OutputFile) < strings.ToLower(entries[j].OutputFile)
-			})
-			outputPath := filepath.Join(creditsRoot, filepath.FromSlash(group.SourceDir), p.EffectiveConfig().Music.CreditsOverlay)
-			desiredByRoot[creditsRoot][outputPath] = []byte(music.RenderCreditsMarkdown(entries))
-			summary.GeneratedPaths = append(summary.GeneratedPaths, outputPath)
-			for _, entry := range entries {
-				summary.Mappings = append(summary.Mappings, MusicFileMapping{
-					Source: entry.OriginalFile,
-					Output: entry.OutputFile,
-				})
-			}
-			sources = append(sources, music.CreditsSource{
-				Path:    filepath.ToSlash(outputPath),
-				Kind:    "generated_music",
-				Entries: entries,
-			})
-		}
-	}
-
-	// Authored credits.md files live under the assets tree. A project with no
-	// configured assets dir (e.g. a module that consumes prebuilt HAKs) has none
-	// to collect — walking "" would fail with `lstat : no such file or directory`.
-	if assetsDir := p.AssetsDir(); assetsDir != "" {
-		err := filepath.WalkDir(assetsDir, func(path string, d os.DirEntry, walkErr error) error {
-			if walkErr != nil {
-				return walkErr
-			}
-			if d.IsDir() {
-				return nil
-			}
-			if strings.ToLower(d.Name()) != "credits.md" {
-				return nil
-			}
-			entries, err := music.ParseCreditsMarkdown(path)
-			if err != nil {
-				return fmt.Errorf("parse credits %s: %w", path, err)
-			}
-			rel, err := filepath.Rel(p.Root, path)
-			if err != nil {
-				return err
-			}
-			sources = append(sources, music.CreditsSource{
-				Path:    filepath.ToSlash(rel),
-				Kind:    "authored",
-				Entries: entries,
-			})
-			return nil
-		})
-		if err != nil {
-			return creditsArtifactWriteResult{}, err
-		}
-	}
-
-	sort.Slice(sources, func(i, j int) bool { return sources[i].Path < sources[j].Path })
-	payload, err := json.MarshalIndent(music.CreditsInventory{Sources: sources}, "", "  ")
-	if err != nil {
-		return creditsArtifactWriteResult{}, fmt.Errorf("marshal credits inventory: %w", err)
-	}
-	payload = append(payload, '\n')
-	if len(desiredByRoot) == 0 {
-		desiredByRoot[defaultCreditsRoot] = map[string][]byte{}
-	}
-	artifacts := make([]string, 0)
-	changedFiles := 0
-	roots := make([]string, 0, len(desiredByRoot))
-	for root := range desiredByRoot {
-		roots = append(roots, root)
-	}
-	sort.Strings(roots)
-	for _, creditsRoot := range roots {
-		desiredFiles := desiredByRoot[creditsRoot]
-		inventoryPath := filepath.Join(creditsRoot, "credits.json")
-		desiredFiles[inventoryPath] = payload
-		if err := os.MkdirAll(creditsRoot, 0o755); err != nil {
-			return creditsArtifactWriteResult{}, fmt.Errorf("create credits dir: %w", err)
-		}
-		changed, err := music.SyncGeneratedCreditsArtifacts(creditsRoot, desiredFiles)
-		if err != nil {
-			return creditsArtifactWriteResult{}, err
-		}
-		changedFiles += changed
-		for path := range desiredFiles {
-			artifacts = append(artifacts, path)
-		}
-		if summary.InventoryPath == "" {
-			summary.InventoryPath = inventoryPath
-		}
-	}
-	sort.Strings(artifacts)
-	summary.ArtifactPaths = append(summary.ArtifactPaths, artifacts...)
-	summary.ChangedFiles = changedFiles
-	return creditsArtifactWriteResult{
-		Artifacts: artifacts,
-		Summary:   summary,
-	}, nil
-}
-
-func cleanupPreparedMusicAssets(prepared *preparedMusicAssets) error {
-	if prepared == nil {
-		return nil
-	}
-	for _, root := range prepared.TempRoots {
-		if strings.TrimSpace(root) == "" {
-			continue
-		}
-		if err := os.RemoveAll(root); err != nil {
-			return fmt.Errorf("remove temporary music artifact root %s: %w", root, err)
-		}
-	}
-	return nil
-}
@@ -2929,7 +2929,7 @@ func TestPlanHAKChunksPutsNewestAssetsInLastChunk(t *testing.T) {
 		t.Fatalf("scan: %v", err)
 	}

-	assets, err := collectAssetResources(p, false, nil, nil, nil)
+	assets, err := collectAssetResources(p, false, nil, nil)
 	if err != nil {
 		t.Fatalf("collect asset resources: %v", err)
 	}
@@ -3676,418 +3676,9 @@ func TestBuildHAKsFailsForDuplicateResourcesInSameHAK(t *testing.T) {
 	}
 }

-func TestBuildHAKsConvertsMusicSourcesAndWritesCreditsArtifacts(t *testing.T) {
-	root := t.TempDir()
-	mustMkdir(t, filepath.Join(root, "assets", "envi", "music", "westgate"))
-	mustMkdir(t, filepath.Join(root, "build"))
-
-	mustWriteFile(t, filepath.Join(root, "nwn-tool.json"), `{
-  "module": {
-    "name": "Test Assets",
-    "resref": "testassets"
-  },
-  "paths": {
-    "assets": "assets",
-    "build": "build"
-  },
-  "music": {
-    "prefixes": {
-      "envi/music/westgate": "mus_wg_"
-    }
-  },
-  "haks": [
-    {
-      "name": "envi",
-      "priority": 1,
-      "max_bytes": 1048576,
-      "split": false,
-      "include": ["envi/**"]
-    }
-  ]
-}
-`)
-
-	mustWriteFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "AleandAnecdotes.mp3"), "source-mp3")
-	mustWriteFile(t, filepath.Join(root, "assets", "envi", "music", "westgate", "CREDITS.md"), "# NWN Music Pack Credits\n\n| Artist | Title | Output File | Original File | Album | Date | License / Copyright | Notes |\n|---|---|---|---|---|---|---|---|\n| Darren Curtis | Ale and Anecdotes | `mus_wg_andnc.bmu` | `AleandAnecdotes.mp3` | Darren's Commercially Free Music |  | Darren Curtis Music |  |\n")
-
-	ffprobePath := filepath.Join(root, "ffprobe")
-	mustWriteFile(t, ffprobePath, "#!/bin/sh\nprintf '%s\\n' '{\"format\":{\"tags\":{\"artist\":\"Unknown\",\"title\":\"Broken Metadata\"}}}'\n")
-	if err := os.Chmod(ffprobePath, 0o755); err != nil {
-		t.Fatalf("chmod ffprobe: %v", err)
-	}
-
-	ffmpegPath := filepath.Join(root, "ffmpeg")
-	mustWriteFile(t, ffmpegPath, "#!/bin/sh\nfor last; do :; done\nprintf 'bmu-data' > \"$last\"\n")
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	t.Setenv("SOW_FFMPEG", ffmpegPath)
-	t.Setenv("SOW_FFPROBE", ffprobePath)
-
-	p, err := project.Load(root)
-	if err != nil {
-		t.Fatalf("load project: %v", err)
-	}
-	if err := p.ValidateLayout(); err != nil {
-		t.Fatalf("validate layout: %v", err)
-	}
-	if err := p.Scan(); err != nil {
-		t.Fatalf("scan: %v", err)
-	}
-
-	result, err := BuildHAKs(p)
-	if err != nil {
-		t.Fatalf("build haks: %v", err)
-	}
-	if len(result.CreditsArtifactPaths) == 0 {
-		t.Fatal("expected credits artifacts to be written")
-	}
-
-	manifestRaw, err := os.ReadFile(filepath.Join(root, "build", "haks.json"))
-	if err != nil {
-		t.Fatalf("read manifest: %v", err)
-	}
-	if !strings.Contains(string(manifestRaw), "envi/music/westgate/mus_wg_andnc.bmu") {
-		t.Fatalf("expected converted bmu in manifest, got %s", string(manifestRaw))
-	}
-	if strings.Contains(string(manifestRaw), "AleandAnecdotes.mp3") {
-		t.Fatalf("did not expect source mp3 in manifest, got %s", string(manifestRaw))
-	}
-
-	creditsRaw, err := os.ReadFile(filepath.Join(root, ".cache", "credits", "envi", "music", "westgate", "CREDITS.md"))
-	if err != nil {
-		t.Fatalf("read generated credits: %v", err)
-	}
-	creditsText := string(creditsRaw)
-	if !strings.Contains(creditsText, "Darren Curtis") || !strings.Contains(creditsText, "mus_wg_andnc.bmu") {
-		t.Fatalf("unexpected generated credits contents: %s", creditsText)
-	}
-	if strings.Contains(creditsText, "Broken Metadata") {
-		t.Fatalf("manual credits overlay should override bad metadata: %s", creditsText)
-	}
-
-	inventoryRaw, err := os.ReadFile(filepath.Join(root, ".cache", "credits", "credits.json"))
-	if err != nil {
-		t.Fatalf("read credits inventory: %v", err)
-	}
-	inventoryText := string(inventoryRaw)
-	if !strings.Contains(inventoryText, "assets/envi/music/westgate/CREDITS.md") {
-		t.Fatalf("expected authored credits source in inventory: %s", inventoryText)
-	}
-	if !strings.Contains(inventoryText, ".cache/credits/envi/music/westgate/CREDITS.md") {
-		t.Fatalf("expected generated credits source in inventory: %s", inventoryText)
-	}
-	if _, err := os.Stat(filepath.Join(root, ".cache", "music")); !os.IsNotExist(err) {
-		t.Fatalf("expected temporary music staging to be cleaned, got err=%v", err)
-	}
-
-	secondResult, err := BuildHAKs(p)
-	if err != nil {
-		t.Fatalf("build haks second pass: %v", err)
-	}
-	if secondResult.CreditsSummary.ChangedFiles != 0 {
-		t.Fatalf("expected second credits refresh to be unchanged, got %d changed files", secondResult.CreditsSummary.ChangedFiles)
-	}
-	if secondResult.CreditsSummary.TrackCount != 1 {
-		t.Fatalf("expected one tracked music conversion, got %d", secondResult.CreditsSummary.TrackCount)
-	}
-}
-
-func TestBuildHAKsUsesExplicitMusicDatasetOutsideLegacyRoot(t *testing.T) {
-	root := t.TempDir()
-	mustMkdir(t, filepath.Join(root, "assets", "audio", "westgate"))
-	mustMkdir(t, filepath.Join(root, "build"))
-
-	ffprobePath := filepath.Join(root, "tools", "ffprobe")
-	ffmpegPath := filepath.Join(root, "tools", "ffmpeg")
-	mustMkdir(t, filepath.Dir(ffprobePath))
-	mustWriteFile(t, ffprobePath, "#!/bin/sh\nprintf '%s\\n' '{\"format\":{\"tags\":{\"artist\":\"Dataset Artist\",\"title\":\"Dataset Title\"}}}'\n")
-	mustWriteFile(t, ffmpegPath, "#!/bin/sh\nfor last; do :; done\nprintf 'dataset-bmu' > \"$last\"\n")
-	if err := os.Chmod(ffprobePath, 0o755); err != nil {
-		t.Fatalf("chmod ffprobe: %v", err)
-	}
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	mustWriteFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Assets
-  resref: testassets
-paths:
-  assets: assets
-  build: build
-music:
-  tools:
-    ffmpeg: tools/ffmpeg
-    ffprobe: tools/ffprobe
-  defaults:
-    credits_root: custom-credits
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      output: generated/music
-      prefix: wg_
-haks:
-  - name: music
-    priority: 1
-    max_bytes: 1048576
-    split: false
-    include:
-      - generated/music/**
-`)
-	mustWriteFile(t, filepath.Join(root, "assets", "audio", "westgate", "Theme Song.mp3"), "source-mp3")
-
-	p, err := project.Load(root)
-	if err != nil {
-		t.Fatalf("load project: %v", err)
-	}
-	if err := p.ValidateLayout(); err != nil {
-		t.Fatalf("validate layout: %v", err)
-	}
-	if err := p.Scan(); err != nil {
-		t.Fatalf("scan: %v", err)
-	}
-
-	result, err := BuildHAKs(p)
-	if err != nil {
-		t.Fatalf("build haks: %v", err)
-	}
-	if result.CreditsSummary.TrackCount != 1 {
-		t.Fatalf("expected one music track, got %#v", result.CreditsSummary)
-	}
-	manifestRaw, err := os.ReadFile(filepath.Join(root, "build", "haks.json"))
-	if err != nil {
-		t.Fatalf("read manifest: %v", err)
-	}
-	manifestText := string(manifestRaw)
-	if !strings.Contains(manifestText, "generated/music/wg_theme.bmu") {
-		t.Fatalf("expected dataset output resource in manifest, got:\n%s", manifestText)
-	}
-	if strings.Contains(manifestText, "audio/westgate/Theme Song.mp3") {
-		t.Fatalf("did not expect source mp3 in manifest, got:\n%s", manifestText)
-	}
-	creditsRaw, err := os.ReadFile(filepath.Join(root, "custom-credits", "audio", "westgate", "CREDITS.md"))
-	if err != nil {
-		t.Fatalf("read generated dataset credits: %v", err)
-	}
-	if !strings.Contains(string(creditsRaw), "Dataset Artist") || !strings.Contains(string(creditsRaw), "wg_theme.bmu") {
-		t.Fatalf("unexpected generated credits:\n%s", string(creditsRaw))
-	}
-}
-
-func TestBuildHAKsConvertsFLACMusicSourcesByDefault(t *testing.T) {
-	root := t.TempDir()
-	mustMkdir(t, filepath.Join(root, "assets", "audio", "westgate"))
-	mustMkdir(t, filepath.Join(root, "build"))
-
-	ffprobePath := filepath.Join(root, "tools", "ffprobe")
-	ffmpegPath := filepath.Join(root, "tools", "ffmpeg")
-	mustMkdir(t, filepath.Dir(ffprobePath))
-	mustWriteFile(t, ffprobePath, "#!/bin/sh\nprintf '%s\\n' '{\"format\":{\"tags\":{\"artist\":\"FLAC Artist\",\"title\":\"FLAC Title\"}}}'\n")
-	mustWriteFile(t, ffmpegPath, "#!/bin/sh\nfor last; do :; done\nprintf 'dataset-bmu' > \"$last\"\n")
-	if err := os.Chmod(ffprobePath, 0o755); err != nil {
-		t.Fatalf("chmod ffprobe: %v", err)
-	}
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	mustWriteFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Assets
-  resref: testassets
-paths:
-  assets: assets
-  build: build
-music:
-  tools:
-    ffmpeg: tools/ffmpeg
-    ffprobe: tools/ffprobe
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      output: generated/music
-      prefix: wg_
-haks:
-  - name: music
-    priority: 1
-    max_bytes: 1048576
-    split: false
-    include:
-      - generated/music/**
-`)
-	mustWriteFile(t, filepath.Join(root, "assets", "audio", "westgate", "Theme Song.flac"), "source-flac")
-
-	p, err := project.Load(root)
-	if err != nil {
-		t.Fatalf("load project: %v", err)
-	}
-	if err := p.ValidateLayout(); err != nil {
-		t.Fatalf("validate layout: %v", err)
-	}
-	if err := p.Scan(); err != nil {
-		t.Fatalf("scan: %v", err)
-	}
-
-	result, err := BuildHAKs(p)
-	if err != nil {
-		t.Fatalf("build haks: %v", err)
-	}
-	if result.CreditsSummary.TrackCount != 1 {
-		t.Fatalf("expected one music track, got %#v", result.CreditsSummary)
-	}
-	manifestRaw, err := os.ReadFile(filepath.Join(root, "build", "haks.json"))
-	if err != nil {
-		t.Fatalf("read manifest: %v", err)
-	}
-	manifestText := string(manifestRaw)
-	if !strings.Contains(manifestText, "generated/music/wg_theme.bmu") {
-		t.Fatalf("expected generated FLAC music in manifest, got:\n%s", manifestText)
-	}
-	if strings.Contains(manifestText, "audio/westgate/Theme Song.flac") {
-		t.Fatalf("did not expect source flac in manifest, got:\n%s", manifestText)
-	}
-}
-
-func TestBuildHAKsUsesYAMLMusicConvertExtensionsForDiscovery(t *testing.T) {
-	root := t.TempDir()
-	mustMkdir(t, filepath.Join(root, "assets", "audio", "westgate"))
-	mustMkdir(t, filepath.Join(root, "build"))
-
-	ffprobePath := filepath.Join(root, "tools", "ffprobe")
-	ffmpegPath := filepath.Join(root, "tools", "ffmpeg")
-	mustMkdir(t, filepath.Dir(ffprobePath))
-	mustWriteFile(t, ffprobePath, "#!/bin/sh\nprintf '%s\\n' '{\"format\":{\"tags\":{\"artist\":\"AAC Artist\",\"title\":\"AAC Title\"}}}'\n")
-	mustWriteFile(t, ffmpegPath, "#!/bin/sh\nfor last; do :; done\nprintf 'dataset-bmu' > \"$last\"\n")
-	if err := os.Chmod(ffprobePath, 0o755); err != nil {
-		t.Fatalf("chmod ffprobe: %v", err)
-	}
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	mustWriteFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Assets
-  resref: testassets
-paths:
-  assets: assets
-  build: build
-music:
-  defaults:
-    convert_extensions:
-      - .aac
-  tools:
-    ffmpeg: tools/ffmpeg
-    ffprobe: tools/ffprobe
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      output: generated/music
-      prefix: wg_
-haks:
-  - name: music
-    priority: 1
-    max_bytes: 1048576
-    split: false
-    include:
-      - generated/music/**
-`)
-	mustWriteFile(t, filepath.Join(root, "assets", "audio", "westgate", "Theme Song.aac"), "source-aac")
-
-	p, err := project.Load(root)
-	if err != nil {
-		t.Fatalf("load project: %v", err)
-	}
-	if err := p.ValidateLayout(); err != nil {
-		t.Fatalf("validate layout: %v", err)
-	}
-	if err := p.Scan(); err != nil {
-		t.Fatalf("scan: %v", err)
-	}
-
-	result, err := BuildHAKs(p)
-	if err != nil {
-		t.Fatalf("build haks: %v", err)
-	}
-	if result.CreditsSummary.TrackCount != 1 {
-		t.Fatalf("expected one music track discovered through YAML convert_extensions, got %#v", result.CreditsSummary)
-	}
-}
-
-func TestPlanHAKsDoesNotTranscodeMusicSources(t *testing.T) {
-	root := t.TempDir()
-	mustMkdir(t, filepath.Join(root, "assets", "audio", "westgate"))
-	mustMkdir(t, filepath.Join(root, "build"))
-
-	ffmpegPath := filepath.Join(root, "tools", "ffmpeg")
-	mustMkdir(t, filepath.Dir(ffmpegPath))
-	mustWriteFile(t, ffmpegPath, "#!/bin/sh\necho should-not-run >&2\nexit 42\n")
-	if err := os.Chmod(ffmpegPath, 0o755); err != nil {
-		t.Fatalf("chmod ffmpeg: %v", err)
-	}
-
-	mustWriteFile(t, filepath.Join(root, "nwn-tool.yaml"), `
-module:
-  name: Test Assets
-  resref: testassets
-paths:
-  assets: assets
-  build: build
-music:
-  tools:
-    ffmpeg: tools/ffmpeg
-    ffprobe: tools/ffprobe
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      output: generated/music
-      prefix: wg_
-haks:
-  - name: music
-    priority: 1
-    max_bytes: 1048576
-    split: false
-    include:
-      - generated/music/**
-`)
-	mustWriteFile(t, filepath.Join(root, "assets", "audio", "westgate", "Theme Song.mp3"), "source-mp3")
-
-	p, err := project.Load(root)
-	if err != nil {
-		t.Fatalf("load project: %v", err)
-	}
-	if err := p.ValidateLayout(); err != nil {
-		t.Fatalf("validate layout: %v", err)
-	}
-	if err := p.Scan(); err != nil {
-		t.Fatalf("scan: %v", err)
-	}
-
-	result, err := PlanHAKs(p)
-	if err != nil {
-		t.Fatalf("plan haks: %v", err)
-	}
-	if result.CreditsSummary.TrackCount != 1 {
-		t.Fatalf("expected one planned music track, got %#v", result.CreditsSummary)
-	}
-	manifestRaw, err := os.ReadFile(filepath.Join(root, "build", "haks.json"))
-	if err != nil {
-		t.Fatalf("read manifest: %v", err)
-	}
-	if !strings.Contains(string(manifestRaw), "generated/music/wg_theme.bmu") {
-		t.Fatalf("expected planned generated music in manifest, got:\n%s", string(manifestRaw))
-	}
-	if _, err := os.Stat(filepath.Join(root, ".cache", "music")); !os.IsNotExist(err) {
-		t.Fatalf("plan-only should not stage music, stat err=%v", err)
-	}
-}
-
 // A module-only project (consumes prebuilt HAKs, no paths.assets) must build via
-// the full `crucible module build` (pipeline.Build) without an assets tree. The
-// HAK + music stages used to crash on the unset assets dir
+// the full `crucible module build` (pipeline.Build) without an assets tree. HAK
+// collection used to crash on the unset assets dir
 // (`lstat : no such file or directory` / `Rel: can't make "" relative`).
 func TestBuildModuleOnlyProjectWithoutAssetsDir(t *testing.T) {
 	root := t.TempDir()
@@ -8,8 +8,6 @@ import (
 	"slices"
 	"strings"
 	"time"
-
-	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/music"
 )

 const (
@@ -21,11 +19,6 @@ const (
 	DefaultHAKArchiveTemplate              = "{hak.name}.hak"
 	DefaultSourceJSONPattern               = "{resref}.{extension}.json"
 	DefaultValidationProfile               = "nwn_module"
-	DefaultMusicStageRoot                  = "{paths.cache}/music"
-	DefaultCreditsRoot                     = "{paths.cache}/credits"
-	DefaultCreditsOverlayFile              = "CREDITS.md"
-	DefaultMusicNamingScheme               = "nwn_bmu"
-	DefaultMusicOutputExtension            = ".bmu"
 	DefaultTopDataBuild                    = "{paths.build}/topdata"
 	DefaultTopDataCompiled2DADir           = "2da"
 	DefaultTopDataCompiledTLK              = "sow_tlk.tlk"
@@ -85,7 +78,6 @@ type EffectiveConfig struct {
 	Generated    GeneratedConfig        `json:"generated_assets" yaml:"generated_assets"`
 	Inventory    InventoryConfig        `json:"inventory" yaml:"inventory"`
 	Validation   ValidationConfig       `json:"validation" yaml:"validation"`
-	Music        EffectiveMusicConfig   `json:"music" yaml:"music"`
 	TopData      EffectiveTopDataConfig `json:"topdata" yaml:"topdata"`
 	Extract      ExtractConfig          `json:"extract" yaml:"extract"`
 	Autogen      EffectiveAutogenConfig `json:"autogen" yaml:"autogen"`
@@ -108,32 +100,6 @@ type EffectiveOutputConfig struct {
 	HAKArchive    string `json:"hak_archive" yaml:"hak_archive"`
 }

-type EffectiveMusicConfig struct {
-	Prefixes          map[string]string                `json:"prefixes" yaml:"prefixes"`
-	Tools             MusicToolsConfig                 `json:"tools" yaml:"tools"`
-	StageRoot         string                           `json:"stage_root" yaml:"stage_root"`
-	CreditsRoot       string                           `json:"credits_root" yaml:"credits_root"`
-	CreditsOverlay    string                           `json:"credits_overlay" yaml:"credits_overlay"`
-	MaxStemLength     int                              `json:"max_stem_length" yaml:"max_stem_length"`
-	NamingScheme      string                           `json:"naming_scheme" yaml:"naming_scheme"`
-	OutputExtension   string                           `json:"output_extension" yaml:"output_extension"`
-	ConvertExtensions []string                         `json:"convert_extensions" yaml:"convert_extensions"`
-	Datasets          map[string]EffectiveMusicDataset `json:"datasets,omitempty" yaml:"datasets,omitempty"`
-}
-
-type EffectiveMusicDataset struct {
-	Source            string   `json:"source" yaml:"source"`
-	Output            string   `json:"output" yaml:"output"`
-	Prefix            string   `json:"prefix,omitempty" yaml:"prefix,omitempty"`
-	StageRoot         string   `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
-	CreditsRoot       string   `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
-	NamingScheme      string   `json:"naming_scheme" yaml:"naming_scheme"`
-	OutputExtension   string   `json:"output_extension" yaml:"output_extension"`
-	MaxStemLength     int      `json:"max_stem_length" yaml:"max_stem_length"`
-	PackageMode       string   `json:"package_mode" yaml:"package_mode"`
-	ConvertExtensions []string `json:"convert_extensions" yaml:"convert_extensions"`
-}
-
 type EffectiveTopDataConfig struct {
 	Source              string                          `json:"source" yaml:"source"`
 	Build               string                          `json:"build" yaml:"build"`
@@ -275,81 +241,6 @@ func (p *Project) EffectiveConfig() EffectiveConfig {
 		extract.ConsumeArchives = &defaultConsume
 	}

-	musicStageRoot := expandPathTemplate(DefaultMusicStageRoot, paths)
-	musicCreditsRoot := expandPathTemplate(DefaultCreditsRoot, paths)
-	musicCreditsOverlay := DefaultCreditsOverlayFile
-	musicMaxStemLength := 16
-	musicNamingScheme := DefaultMusicNamingScheme
-	musicOutputExtension := DefaultMusicOutputExtension
-	musicConvertExtensions := music.DefaultConvertExtensions()
-	if d := p.Config.Music.Defaults; d != nil {
-		if d.StageRoot != "" {
-			musicStageRoot = expandPathTemplate(d.StageRoot, paths)
-		}
-		if d.CreditsRoot != "" {
-			musicCreditsRoot = expandPathTemplate(d.CreditsRoot, paths)
-		}
-		if d.CreditsOverlay != "" {
-			musicCreditsOverlay = d.CreditsOverlay
-		}
-		if d.MaxStemLength != nil {
-			musicMaxStemLength = *d.MaxStemLength
-		}
-		if d.NamingScheme != "" {
-			musicNamingScheme = d.NamingScheme
-		}
-		if d.OutputExtension != "" {
-			musicOutputExtension = normalizeExtension(d.OutputExtension)
-		}
-		if len(d.ConvertExtensions) > 0 {
-			musicConvertExtensions = normalizeExtensionSlice(d.ConvertExtensions)
-		}
-	}
-	musicPrefixes := cloneStringMap(p.Config.Music.Prefixes)
-	if len(musicPrefixes) == 0 {
-		musicPrefixes = make(map[string]string, len(p.Config.Music.Datasets))
-		for _, ds := range p.Config.Music.Datasets {
-			if ds.Source != "" && ds.Prefix != "" {
-				musicPrefixes[ds.Source] = ds.Prefix
-			}
-		}
-	}
-	effectiveDatasets := make(map[string]EffectiveMusicDataset, len(p.Config.Music.Datasets))
-	for id, ds := range p.Config.Music.Datasets {
-		dsStageRoot := ds.StageRoot
-		if dsStageRoot == "" {
-			dsStageRoot = musicStageRoot
-		}
-		dsCreditsRoot := ds.CreditsRoot
-		if dsCreditsRoot == "" {
-			dsCreditsRoot = musicCreditsRoot
-		}
-		dsOutput := strings.TrimSpace(ds.Output)
-		if dsOutput == "" {
-			dsOutput = ds.Source
-		}
-		dsNamingScheme := defaultString(ds.NamingScheme, musicNamingScheme)
-		dsOutputExtension := musicOutputExtension
-		if ds.OutputExtension != "" {
-			dsOutputExtension = normalizeExtension(ds.OutputExtension)
-		}
-		dsConvertExtensions := musicConvertExtensions
-		if len(ds.ConvertExtensions) > 0 {
-			dsConvertExtensions = normalizeExtensionSlice(ds.ConvertExtensions)
-		}
-		effectiveDatasets[id] = EffectiveMusicDataset{
-			Source:            ds.Source,
-			Output:            dsOutput,
-			Prefix:            ds.Prefix,
-			StageRoot:         dsStageRoot,
-			CreditsRoot:       dsCreditsRoot,
-			NamingScheme:      dsNamingScheme,
-			OutputExtension:   dsOutputExtension,
-			MaxStemLength:     musicMaxStemLength,
-			PackageMode:       defaultString(ds.PackageMode, "hak_asset"),
-			ConvertExtensions: dsConvertExtensions,
-		}
-	}
 	effective := EffectiveConfig{
 		ConfigSource: p.ConfigSource,
 		Module:       p.Config.Module,
@@ -359,18 +250,6 @@ func (p *Project) EffectiveConfig() EffectiveConfig {
 		Generated:    generated,
 		Inventory:    inventory,
 		Validation:   validation,
-		Music: EffectiveMusicConfig{
-			Prefixes:          musicPrefixes,
-			Tools:             p.Config.Music.Tools,
-			StageRoot:         musicStageRoot,
-			CreditsRoot:       musicCreditsRoot,
-			CreditsOverlay:    musicCreditsOverlay,
-			MaxStemLength:     musicMaxStemLength,
-			NamingScheme:      musicNamingScheme,
-			OutputExtension:   musicOutputExtension,
-			ConvertExtensions: musicConvertExtensions,
-			Datasets:          effectiveDatasets,
-		},
 		TopData:      top,
 		Extract:      extract,
 		Autogen: EffectiveAutogenConfig{
@@ -517,13 +396,6 @@ func markMissingDefaults(provenance ConfigProvenance) {
 		"validation.profile":                             DefaultValidationProfile,
 		"validation.builtin_script_prefixes":             "NWN built-in script prefixes",
 		"validation.required_fields":                     "NWN required GFF fields",
-		"music.stage_root":                               DefaultMusicStageRoot,
-		"music.credits_root":                             DefaultCreditsRoot,
-		"music.credits_overlay":                          DefaultCreditsOverlayFile,
-		"music.max_stem_length":                          "16",
-		"music.naming_scheme":                            DefaultMusicNamingScheme,
-		"music.output_extension":                         DefaultMusicOutputExtension,
-		"music.convert_extensions":                       strings.Join(music.DefaultConvertExtensions(), ", "),
 		"topdata.build":                                  DefaultTopDataBuild,
 		"topdata.compiled_2da_dir":                       DefaultTopDataCompiled2DADir,
 		"topdata.compiled_tlk":                           DefaultTopDataCompiledTLK,
@@ -690,8 +562,6 @@ func activeOverrides(effective EffectiveConfig) []ConfigOverride {
 		"autogen.cache.parts_manifest_refresh": effective.Autogen.Cache.PartsManifestRefreshEnv,
 		"autogen.release_source.server_url":    effective.Autogen.ReleaseSource.ServerURLEnv,
 		"autogen.release_source.repo":          effective.Autogen.ReleaseSource.RepoEnv,
-		"music.ffmpeg":                         "SOW_FFMPEG",
-		"music.ffprobe":                        "SOW_FFPROBE",
 		"wiki.endpoint":                        "NODEBB_API_ENDPOINT",
 		"wiki.token":                           "NODEBB_API_TOKEN",
 		"wiki.categories":                      "NODEBB_WIKI_CATEGORIES",
@@ -31,7 +31,7 @@ var SourceExtensions = []string{
 }

 var AssetExtensions = []string{
-	".2da", ".bik", ".bmp", ".bmu", ".dds", ".dwk", ".gr2", ".itp", ".jpg", ".lod", ".lyt", ".mdb", ".mdl", ".mdx", ".mp3", ".mtr", ".ogg", ".plt", ".png", ".pwk", ".set", ".shd", ".tga", ".txi", ".uti", ".vis", ".wav", ".wlk", ".wok", ".xml",
+	".2da", ".bik", ".bmp", ".bmu", ".dds", ".dwk", ".gr2", ".itp", ".jpg", ".lod", ".lyt", ".mdb", ".mdl", ".mdx", ".mtr", ".plt", ".png", ".pwk", ".set", ".shd", ".tga", ".txi", ".uti", ".vis", ".wav", ".wlk", ".wok", ".xml",
 }

 var BuiltinScriptPrefixes = []string{
@@ -88,7 +88,6 @@ type Config struct {
 	HAKs       []HAKConfig      `json:"haks" yaml:"haks"`
 	Inventory  InventoryConfig  `json:"inventory" yaml:"inventory"`
 	Validation ValidationConfig `json:"validation" yaml:"validation"`
-	Music      MusicConfig      `json:"music" yaml:"music"`
 	TopData    TopDataConfig    `json:"topdata" yaml:"topdata"`
 	Extract    ExtractConfig    `json:"extract" yaml:"extract"`
 	Autogen    AutogenConfig    `json:"autogen" yaml:"autogen"`
@@ -153,40 +152,6 @@ type HAKConfig struct {
 	Include  []string `json:"include" yaml:"include"`
 }

-type MusicConfig struct {
-	Prefixes map[string]string             `json:"prefixes,omitempty" yaml:"prefixes,omitempty"`
-	Tools    MusicToolsConfig              `json:"tools,omitempty" yaml:"tools,omitempty"`
-	Defaults *MusicDefaultsConfig          `json:"defaults,omitempty" yaml:"defaults,omitempty"`
-	Datasets map[string]MusicDatasetConfig `json:"datasets,omitempty" yaml:"datasets,omitempty"`
-}
-
-type MusicToolsConfig struct {
-	FFmpeg  string `json:"ffmpeg,omitempty" yaml:"ffmpeg,omitempty"`
-	FFprobe string `json:"ffprobe,omitempty" yaml:"ffprobe,omitempty"`
-}
-
-type MusicDefaultsConfig struct {
-	StageRoot         string   `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
-	CreditsRoot       string   `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
-	CreditsOverlay    string   `json:"credits_overlay,omitempty" yaml:"credits_overlay,omitempty"`
-	MaxStemLength     *int     `json:"max_stem_length,omitempty" yaml:"max_stem_length,omitempty"`
-	NamingScheme      string   `json:"naming_scheme,omitempty" yaml:"naming_scheme,omitempty"`
-	OutputExtension   string   `json:"output_extension,omitempty" yaml:"output_extension,omitempty"`
-	ConvertExtensions []string `json:"convert_extensions,omitempty" yaml:"convert_extensions,omitempty"`
-}
-
-type MusicDatasetConfig struct {
-	Source            string   `json:"source" yaml:"source"`
-	Output            string   `json:"output,omitempty" yaml:"output,omitempty"`
-	Prefix            string   `json:"prefix,omitempty" yaml:"prefix,omitempty"`
-	StageRoot         string   `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
-	CreditsRoot       string   `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
-	NamingScheme      string   `json:"naming_scheme,omitempty" yaml:"naming_scheme,omitempty"`
-	OutputExtension   string   `json:"output_extension,omitempty" yaml:"output_extension,omitempty"`
-	PackageMode       string   `json:"package_mode,omitempty" yaml:"package_mode,omitempty"`
-	ConvertExtensions []string `json:"convert_extensions,omitempty" yaml:"convert_extensions,omitempty"`
-}
-
 type TopDataConfig struct {
 	Source              string                          `json:"source" yaml:"source"`
 	Build               string                          `json:"build" yaml:"build"`
@@ -750,8 +715,6 @@ func (p *Project) ValidateLayout() error {
 		}
 	}
 	failures = append(failures, validateAutogenConfig(p.Config.Autogen)...)
-	failures = append(failures, validateMusicConfig(p.Config.Music)...)
-
 	hakNames := map[string]struct{}{}
 	for index, hak := range p.Config.HAKs {
 		name := strings.TrimSpace(hak.Name)
@@ -1059,46 +1022,9 @@ func (p *Project) Scan() error {
 	assetDir := p.AssetsDir()
 	var assetFiles []string
 	if assetDir != "" && filepath.Clean(assetDir) != filepath.Clean(p.Root) {
-		musicSourceExts := make(map[string]struct{})
-		for _, ext := range effective.Music.ConvertExtensions {
-			musicSourceExts[ext] = struct{}{}
-		}
-		musicSourceRoots := make(map[string]map[string]struct{})
-		for _, ds := range effective.Music.Datasets {
-			if strings.TrimSpace(ds.Source) == "" {
-				continue
-			}
-			exts := musicSourceRoots[ds.Source]
-			if exts == nil {
-				exts = make(map[string]struct{})
-				musicSourceRoots[ds.Source] = exts
-			}
-			for _, ext := range ds.ConvertExtensions {
-				exts[ext] = struct{}{}
-			}
-			for ext := range musicSourceExts {
-				exts[ext] = struct{}{}
-			}
-		}
 		var err error
 		assetFiles, _, err = scanDir(assetDir, func(path string) bool {
-			rel, err := filepath.Rel(assetDir, path)
-			if err != nil {
-				return false
-			}
-			rel = filepath.ToSlash(rel)
-			ext := strings.ToLower(filepath.Ext(rel))
-			if slices.Contains(effective.Inventory.AssetExtensions, ext) {
-				return true
-			}
-			for root, exts := range musicSourceRoots {
-				if !pathIsUnder(root, rel) {
-					continue
-				}
-				_, ok := exts[ext]
-				return ok
-			}
-			return false
+			return slices.Contains(effective.Inventory.AssetExtensions, strings.ToLower(filepath.Ext(path)))
 		})
 		if err != nil {
 			if errors.Is(err, os.ErrNotExist) {
@@ -1343,33 +1269,6 @@ func (p *Project) TopDataPackageTLKPath() string {
 	return filepath.Join(p.BuildDir(), p.TopDataPackageTLKName())
 }

-func (p *Project) MusicStageDir() string {
-	return p.rootPath(p.EffectiveConfig().Music.StageRoot)
-}
-
-func (p *Project) CreditsDir() string {
-	return p.rootPath(p.EffectiveConfig().Music.CreditsRoot)
-}
-
-func (p *Project) MusicToolPath(path string) string {
-	path = strings.TrimSpace(path)
-	if path == "" {
-		return ""
-	}
-	if filepath.IsAbs(path) {
-		return path
-	}
-	return filepath.Join(p.Root, filepath.FromSlash(path))
-}
-
-func (p *Project) MusicFFmpegPath() string {
-	return p.MusicToolPath(p.EffectiveConfig().Music.Tools.FFmpeg)
-}
-
-func (p *Project) MusicFFprobePath() string {
-	return p.MusicToolPath(p.EffectiveConfig().Music.Tools.FFprobe)
-}
-
 func (p *Project) AutogenCacheDir() string {
 	return p.rootPath(p.EffectiveConfig().Autogen.Cache.Root)
 }
@@ -1459,36 +1358,6 @@ func normalizeConfig(cfg *Config) {
 	for i := range cfg.Autogen.Consumers {
 		cfg.Autogen.Consumers[i].Include = normalizeStringSlice(cfg.Autogen.Consumers[i].Include)
 	}
-	normalizeMusicConfig(&cfg.Music)
-}
-
-func normalizeMusicConfig(music *MusicConfig) {
-	if music.Defaults != nil {
-		music.Defaults.ConvertExtensions = normalizeExtensionSlice(music.Defaults.ConvertExtensions)
-		music.Defaults.OutputExtension = normalizeExtension(music.Defaults.OutputExtension)
-	}
-	if len(music.Prefixes) > 0 && len(music.Datasets) == 0 {
-		datasets := make(map[string]MusicDatasetConfig, len(music.Prefixes))
-		for dir, prefix := range music.Prefixes {
-			source := trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(dir)))
-			if source == "" {
-				continue
-			}
-			key := strings.ReplaceAll(source, "/", "_")
-			datasets[key] = MusicDatasetConfig{
-				Source: source,
-				Prefix: strings.TrimSpace(prefix),
-			}
-		}
-		music.Datasets = datasets
-	}
-	for id, ds := range music.Datasets {
-		ds.Source = trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(ds.Source)))
-		ds.Output = trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(ds.Output)))
-		ds.OutputExtension = normalizeExtension(ds.OutputExtension)
-		ds.ConvertExtensions = normalizeExtensionSlice(ds.ConvertExtensions)
-		music.Datasets[id] = ds
-	}
 }

 func normalizeStringSlice(input []string) []string {
@@ -1982,68 +1851,6 @@ func validatePartsRowsFormat(format string) error {
 	return nil
 }

-func validateMusicConfig(cfg MusicConfig) []error {
-	var failures []error
-	if cfg.Defaults != nil {
-		if cfg.Defaults.MaxStemLength != nil && *cfg.Defaults.MaxStemLength < 3 {
-			failures = append(failures, errors.New("music.defaults.max_stem_length must be at least 3"))
-		}
-		if cfg.Defaults.NamingScheme != "" && cfg.Defaults.NamingScheme != "nwn_bmu" && cfg.Defaults.NamingScheme != "passthrough" {
-			failures = append(failures, fmt.Errorf("music.defaults.naming_scheme %q is not supported", cfg.Defaults.NamingScheme))
-		}
-		if cfg.Defaults.OutputExtension != "" && !strings.HasPrefix(cfg.Defaults.OutputExtension, ".") {
-			failures = append(failures, errors.New("music.defaults.output_extension must start with ."))
-		}
-	}
-	normalizedRoots := map[string]string{}
-	for root, prefix := range cfg.Prefixes {
-		normalizedRoot := trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(root)))
-		if normalizedRoot == "" {
-			failures = append(failures, errors.New("music.prefixes contains an empty root"))
-			continue
-		}
-		if prior, exists := normalizedRoots[normalizedRoot]; exists {
-			failures = append(failures, fmt.Errorf("music.prefixes roots %q and %q normalize to the same path", prior, root))
-		}
-		normalizedRoots[normalizedRoot] = root
-		if strings.TrimSpace(prefix) == "" {
-			failures = append(failures, fmt.Errorf("music.prefixes[%q] must not be empty", root))
-		}
-	}
-	seenSources := map[string]string{}
-	for id, ds := range cfg.Datasets {
-		if strings.TrimSpace(id) == "" {
-			failures = append(failures, errors.New("music.datasets contains an empty key"))
-		} else if strings.Contains(id, "/") || strings.Contains(id, "\\") {
-			failures = append(failures, fmt.Errorf("music.datasets id %q must not contain path separators", id))
-		}
-		source := trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(ds.Source)))
-		if source == "" {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].source is required", id))
-		} else if pathEscapesRoot(source) {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].source must not escape project root", id))
-		} else if prior, exists := seenSources[source]; exists {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].source %q conflicts with dataset %q", id, ds.Source, prior))
-		} else {
-			seenSources[source] = id
-		}
-		output := trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(ds.Output)))
-		if output != "" && pathEscapesRoot(output) {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].output must not escape project root", id))
-		}
-		if ds.NamingScheme != "" && ds.NamingScheme != "nwn_bmu" && ds.NamingScheme != "passthrough" {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].naming_scheme %q is not supported", id, ds.NamingScheme))
-		}
-		if ds.PackageMode != "" && ds.PackageMode != "hak_asset" && ds.PackageMode != "none" {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].package_mode %q is not supported", id, ds.PackageMode))
-		}
-		if ds.OutputExtension != "" && !strings.HasPrefix(ds.OutputExtension, ".") {
-			failures = append(failures, fmt.Errorf("music.datasets[%q].output_extension must start with .", id))
-		}
-	}
-	return failures
-}
-
 func pathEscapesRoot(path string) bool {
 	clean := filepath.Clean(filepath.FromSlash(path))
 	return clean == ".." || strings.HasPrefix(clean, ".."+string(filepath.Separator))
@@ -384,50 +384,30 @@ func TestValidateLayoutRejectsInvalidTopDataClassFeatInjections(t *testing.T) {
 	}
 }

-func TestScanUsesYAMLMusicConvertExtensionsWithinConfiguredDatasetRoots(t *testing.T) {
+func TestDefaultAssetExtensionsKeepAuthoredBMUWithoutConversionSources(t *testing.T) {
+	for _, extension := range []string{".bmu", ".wav"} {
+		if !slices.Contains(AssetExtensions, extension) {
+			t.Errorf("default asset extensions must retain %s", extension)
+		}
+	}
+	for _, extension := range []string{".mp3", ".ogg"} {
+		if slices.Contains(AssetExtensions, extension) {
+			t.Errorf("default asset extensions must not include conversion source %s", extension)
+		}
+	}
+}
+
+func TestLoadRejectsRemovedMusicConfig(t *testing.T) {
 	root := t.TempDir()
-	if err := os.MkdirAll(filepath.Join(root, "assets", "audio", "westgate"), 0o755); err != nil {
-		t.Fatalf("mkdir westgate audio: %v", err)
-	}
-	if err := os.MkdirAll(filepath.Join(root, "assets", "audio", "other"), 0o755); err != nil {
-		t.Fatalf("mkdir other audio: %v", err)
-	}
 	writeProjectFile(t, filepath.Join(root, ConfigFile), `
 module:
  name: Test Module
  resref: testmod
-paths:
-  source: src
-  assets: assets
 music:
-  defaults:
-    convert_extensions:
-      - .flac
-  datasets:
-    westgate_audio:
-      source: audio/westgate
-      convert_extensions:
-        - .aac
+  datasets: {}
 `)
-	writeProjectFile(t, filepath.Join(root, "assets", "audio", "westgate", "theme.aac"), "aac")
-	writeProjectFile(t, filepath.Join(root, "assets", "audio", "westgate", "theme.flac"), "flac")
-	writeProjectFile(t, filepath.Join(root, "assets", "audio", "other", "ignored.aac"), "aac")
-
-	proj, err := Load(root)
-	if err != nil {
-		t.Fatalf("Load returned error: %v", err)
-	}
-	if err := proj.Scan(); err != nil {
-		t.Fatalf("Scan returned error: %v", err)
-	}
-	if !slices.Contains(proj.Inventory.AssetFiles, "audio/westgate/theme.aac") {
-		t.Fatalf("expected configured dataset AAC file to be discovered, got %#v", proj.Inventory.AssetFiles)
-	}
-	if !slices.Contains(proj.Inventory.AssetFiles, "audio/westgate/theme.flac") {
-		t.Fatalf("expected configured dataset FLAC file to be discovered, got %#v", proj.Inventory.AssetFiles)
-	}
-	if slices.Contains(proj.Inventory.AssetFiles, "audio/other/ignored.aac") {
-		t.Fatalf("did not expect non-dataset AAC file to be discovered, got %#v", proj.Inventory.AssetFiles)
+	if _, err := Load(root); err == nil || !strings.Contains(err.Error(), "music") {
+		t.Fatalf("expected strict YAML decoding to reject removed music config, got %v", err)
 	}
 }

@@ -1780,34 +1760,6 @@ func TestValidateLayoutRejectsDuplicateHAKNames(t *testing.T) {
 	}
 }

-func TestValidateLayoutRejectsAmbiguousMusicPrefixes(t *testing.T) {
-	root := t.TempDir()
-	mkdirAll(t, filepath.Join(root, "assets"))
-	mkdirAll(t, filepath.Join(root, "build"))
-
-	proj := &Project{
-		Root: root,
-		Config: Config{
-			Module: ModuleConfig{Name: "Test", ResRef: "test"},
-			Paths:  PathConfig{Assets: "assets", Build: "build"},
-			Music: MusicConfig{
-				Prefixes: map[string]string{
-					"envi/music":  "mus_",
-					"/envi/music": "mus2_",
-				},
-			},
-		},
-	}
-
-	err := proj.ValidateLayout()
-	if err == nil {
-		t.Fatal("expected music prefix validation error")
-	}
-	if !strings.Contains(err.Error(), "normalize to the same path") {
-		t.Fatalf("expected ambiguous prefix validation error, got %v", err)
-	}
-}
-
 func TestScanAllowsMissingAssetsDir(t *testing.T) {
 	root := t.TempDir()
 	mkdirAll(t, filepath.Join(root, "src"))
@@ -10,7 +10,6 @@ import (

 	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/erf"
 	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/gff"
-	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/music"
 	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/project"
 )

@@ -101,8 +100,7 @@ func ValidateProject(p *project.Project) Report {
 	}

 	for _, rel := range p.Inventory.AssetFiles {
-		musicSource := isMusicSourceAsset(p, rel)
-		if hasUppercaseResourceName(rel) && !musicSource {
+		if hasUppercaseResourceName(rel) {
 			report.add(rel, "resource filenames should be lowercase", SeverityWarning)
 		}
 		base := strings.ToLower(strings.TrimSuffix(filepath.Base(rel), filepath.Ext(rel)))
@@ -116,9 +114,6 @@ func ValidateProject(p *project.Project) Report {
 		if _, exists := assetIndex[key]; !exists {
 			assetIndex[key] = rel
 		}
-		if musicSource {
-			continue
-		}

 		group, err := resolver.groupFor(rel)
 		if err != nil {
@@ -507,30 +502,6 @@ func hasAsset(name string, extensions []string, assets map[string]string) bool {
 	return false
 }

-func isMusicSourceAsset(p *project.Project, rel string) bool {
-	rel = filepath.ToSlash(strings.TrimSpace(rel))
-	ext := strings.ToLower(filepath.Ext(rel))
-	effective := p.EffectiveConfig()
-	for _, dataset := range effective.Music.Datasets {
-		if !music.PathIsUnder(dataset.Source, rel) {
-			continue
-		}
-		for _, candidate := range dataset.ConvertExtensions {
-			if ext == strings.ToLower(strings.TrimSpace(candidate)) {
-				return true
-			}
-		}
-	}
-	if music.PathIsUnder("envi/music", rel) {
-		for _, candidate := range effective.Music.ConvertExtensions {
-			if ext == strings.ToLower(strings.TrimSpace(candidate)) {
-				return true
-			}
-		}
-	}
-	return false
-}
-
 func isBuiltinScript(name string, builtinScriptPrefixes []string) bool {
 	lower := strings.ToLower(name)
 	for _, prefix := range builtinScriptPrefixes {
@@ -29,7 +29,7 @@ os="$(uname -s)"; arch="$(uname -m)"
 case "$os" in
  Linux)  os=linux ;;
  Darwin) os=darwin ;;
-  *) echo "crucible: unsupported OS '$os' — install ffmpeg-free crucible manually" >&2; exit 1 ;;
+  *) echo "crucible: unsupported OS '$os' — install crucible manually" >&2; exit 1 ;;
 esac
 case "$arch" in
  x86_64|amd64)  arch=amd64 ;;