Wiki pipeline (#3)

Implemented the wiki pipeline to a shippable local state across `toolkit/`, `module/`, and the NodeBB wiki plugin.

**Scope Audited**
- Toolkit config/project loading, wiki renderer, deployer, app command wiring.
- Module `nwn-tool.yaml`, wiki source/docs, release script, topdata docs.
- Plugin sanitizer/API storage contract docs and sanitizer tests.

**Changes Made**
- Added topdata-owned wiki declarations under `module/topdata/wiki/`.
- Added `topdata.wiki.*` config fields, validation, effective config output.
- Switched generated wiki pages to `.html` with HTML comment managed/manual markers.
- Added `page-index.json` generation and deterministic metadata.
- Added manual-section merge preservation and stale page `report`/`archive` handling.
- Added namespace `category_env` loading from `topdata/wiki/namespaces.yaml`, while keeping `--category`/`NODEBB_WIKI_CATEGORIES` overrides.
- Updated release deployment to keep dry-run first and make stale cleanup opt-in via `SOW_MODULE_WIKI_DEPLOY_STALE_POLICY`.
- Updated plugin sanitizer to preserve only `sow-topdata-wiki` comments.

**Configuration/Schema Impact**
- `module/nwn-tool.yaml` now declares wiki source, renderer, link strategy, templates, manual sections, managed marker policy, and stale policy.
- Deploy manifest entries now support stale/archive metadata: `stale`, `last_seen_hash`, `archived_hash`, `title`, `namespace`, `tid`, `pid`, `cid`.

**Compatibility Impact**
- Legacy Markdown managed markers are still readable for migration.
- Generated output is now HTML, not Markdown.
- Existing mapped pages update by `pid`; creates still require explicit `--create`.

**Tests Added/Updated**
- Go tests for wiki config validation, HTML rendering, page index, manual merge, stale report/archive, app summary output.
- Plugin sanitizer test for generated topdata bot HTML markers/subset.

**Validation Performed**
- `go test ./internal/project ./internal/topdata ./internal/app` passed.
- `./build-tool.sh` passed.
- `SOW_TOOLS_DEV_BINARY=../toolkit/tools/sow-toolkit ./validate-topdata.sh` passed.
- `SOW_TOOLS_DEV_BINARY=../toolkit/tools/sow-toolkit ./build-wiki.sh --force` passed, generating 1345 entity pages.
- `deploy-wiki --dry-run --create` with dummy endpoint/token and namespace CID env vars passed locally: 1377 planned creates, 0 stale/drift.
- `node tests/wiki-html-sanitizer.test.js` passed.

**Remaining Risks**
- Full plugin `npm test` is blocked by an existing unrelated drawer CSS contract failure in `tests/wiki-article-drawers.test.js`.
- Controlled live migration was not performed because it requires a non-production NodeBB namespace and credentials.
- Direct `PUT /api/v3/posts/{pid}` save-filter behavior is documented as needing live confirmation against the deployed NodeBB/plugin stack.

Reviewed-on: https://gitea.westgate.pw/ShadowsOverWestgate/sow-tools/pulls/3
Co-authored-by: vickydotbat <vickydotbat@tutamail.com>
Co-committed-by: vickydotbat <vickydotbat@tutamail.com>

internal/app/app.go

@@ -1089,7 +1089,7 @@ func (c *topdataConsole) emitWikiBuildResult(outputDir string, pageCount int, st
 	fmt.Fprintf(c.stdout, "wiki status: %s\n", status)
 }
 
-func (c *topdataConsole) emitWikiDeployResult(localPages, created, updated, skipped, stale, drifted int, manifest string) {
+func (c *topdataConsole) emitWikiDeployResult(localPages, created, updated, skipped, stale, archived, drifted int, manifest string) {
 	spin.linebreak()
 	fmt.Fprintln(c.stdout, "Deploy Wiki ----------")
 	fmt.Fprintf(c.stdout, "project: %s\n", c.projectName)
@@ -1098,6 +1098,7 @@ func (c *topdataConsole) emitWikiDeployResult(localPages, created, updated, skip
 	fmt.Fprintf(c.stdout, "updated: %d\n", updated)
 	fmt.Fprintf(c.stdout, "skipped: %d\n", skipped)
 	fmt.Fprintf(c.stdout, "stale: %d\n", stale)
+	fmt.Fprintf(c.stdout, "archived: %d\n", archived)
 	fmt.Fprintf(c.stdout, "drifted: %d\n", drifted)
 	fmt.Fprintf(c.stdout, "manifest: %s\n", c.relPath(manifest))
 }
@@ -1868,7 +1869,7 @@ func runDeployWiki(ctx context) error {
 		return err
 	}
 
-	console.emitWikiDeployResult(result.LocalPages, result.Created, result.Updated, result.Skipped, result.Stale, result.Drifted, result.Manifest)
+	console.emitWikiDeployResult(result.LocalPages, result.Created, result.Updated, result.Skipped, result.Stale, result.Archived, result.Drifted, result.Manifest)
 	return nil
 }
 
@@ -1936,6 +1937,12 @@ func parseDeployWikiArgs(commandName string, args []string) (topdata.DeployWikiO
 				return opts, fmt.Errorf("--manifest requires a value")
 			}
 			opts.ManifestPath = args[i]
+		case "--stale-policy":
+			i++
+			if i >= len(args) {
+				return opts, fmt.Errorf("--stale-policy requires a value")
+			}
+			opts.StalePolicy = args[i]
 		case "--dry-run":
 			opts.DryRun = true
 		case "--force":
@@ -1943,7 +1950,7 @@ func parseDeployWikiArgs(commandName string, args []string) (topdata.DeployWikiO
 		case "--create":
 			opts.AllowCreates = true
 		case "-h", "--help":
-			return opts, fmt.Errorf("usage: %s [--source-dir <path>] [--endpoint <url>] [--token <token>] [--version <ver>] [--namespace <ns> ...] [--category <namespace=cid> ...] [--manifest <path>] [--dry-run] [--create] [--force]", commandName)
+			return opts, fmt.Errorf("usage: %s [--source-dir <path>] [--endpoint <url>] [--token <token>] [--version <ver>] [--namespace <ns> ...] [--category <namespace=cid> ...] [--manifest <path>] [--stale-policy <report|archive>] [--dry-run] [--create] [--force]", commandName)
 		default:
 			if value, ok, err := requireInlineFlagValue(arg, "--source-dir"); ok || err != nil {
 				if err != nil {
@@ -1995,6 +2002,11 @@ func parseDeployWikiArgs(commandName string, args []string) (topdata.DeployWikiO
 					return opts, err
 				}
 				opts.ManifestPath = value
+			} else if value, ok, err := requireInlineFlagValue(arg, "--stale-policy"); ok || err != nil {
+				if err != nil {
+					return opts, err
+				}
+				opts.StalePolicy = value
 			} else if arg == "--dry-run" {
 				opts.DryRun = true
 			} else if arg == "--force" {