Sprint 0-2: TS plugin scaffolding, LanceDB utils, tooling updates

- Add index-tool.ts command implementation
- Wire lancedb.ts vector search into plugin
- Update src/tools/index.ts exports
- Bump package deps (ts-jest, jest, typescript, lancedb)
- Add .claude/settings.local.json

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -14,6 +14,7 @@
   "dependencies": {
     "@lancedb/lancedb": "^0.12",
     "chokidar": "^3.6",
+    "openclaw": "^2026.4.9",
     "yaml": "^2.5"
   },
   "devDependencies": {
@@ -22,4 +23,4 @@
     "typescript": "^5.5",
     "vitest": "^2.0"
   }
-}
+}