Targeted stale wiki cache reuse fix

**Scope Audited**
`module/` release/wiki wrapper flow and `toolkit/` wiki generation cache logic.

**Changes Made**
Root cause was stale wiki cache reuse. The generator cache considered digest + page count, but not generator version, so a restored VPS cache with old generated output could skip regeneration.

Changed [wiki_native.go](/home/vicky/Projects/nwnee-shadowsoverwestgate/toolkit/internal/topdata/wiki_native.go:29) to bump the wiki generator to `nodebb-tiptap-html-v3`, and changed [wiki_native.go](/home/vicky/Projects/nwnee-shadowsoverwestgate/toolkit/internal/topdata/wiki_native.go:268) so cached pages are current only when `state.version` matches.

**Configuration/Schema Impact**
No YAML/config/schema changes. Existing `.cache/wiki/state.json` files with `nodebb-tiptap-html-v2` will be invalidated and regenerated.

**Compatibility Impact**
This is compatible with existing caches; it only forces one regeneration when the new toolkit runs. After that, normal digest-based skipping resumes.

**Tests Added**
Added [TestBuildWikiRegeneratesOldGeneratorCache](/home/vicky/Projects/nwnee-shadowsoverwestgate/toolkit/internal/topdata/wiki_native_test.go:183), which simulates a `v2` cache and verifies `build-wiki` regenerates it.

**Validation Performed**
- Confirmed new test failed before the fix with `wiki status "skipped"`.
- `go test ./internal/topdata -count=1` passes.
- `./build-tool.sh` succeeds.
- `SOW_TOOLS_DEV_BINARY=../toolkit/tools/sow-toolkit ./build-wiki.sh` now reports:
  - `wiki pages: 1163`
  - `wiki status: generated`
- Local generated race pages: `17`.

**Remaining Risk / VPS Next Step**
The VPS release job must use this rebuilt/published toolkit. On the next run, you should see the wiki build regenerate once before deploy, and deploy should load `1163` local pages instead of `1092`, including `races:*` pages.

internal/topdata/wiki_native.go

@@ -26,7 +26,7 @@ const (
 	legacyWikiRootDirName = ".wiki"
 	wikiPagesDirName      = "pages"
 	wikiStateFileName     = "state.json"
-	wikiGeneratorVersion  = "nodebb-tiptap-html-v2"
+	wikiGeneratorVersion  = "nodebb-tiptap-html-v3"
 	wikiGeneratedStatus   = "generated"
 	wikiSkippedStatus     = "skipped"
 )
@@ -266,6 +266,9 @@ func wikiStatusPagesEnabled(cfg project.TopDataWikiConfig) bool {
 }
 
 func wikiCachedPagesAreCurrent(outputDir string, state wikiStateDocument) bool {
+	if state.Version != wikiGeneratorVersion {
+		return false
+	}
 	if state.Pages <= 0 {
 		return false
 	}