chore: bump all packages to 0.0.1-alpha.2

- Bumps all @mosaic/* packages from alpha.1 to alpha.2
- Excludes test/spec files from CLI build output (tsconfig fix)
- Triggers CI publish to Gitea npm registry with latest changes:
  - @mosaic/types: new AbortPayload type
  - @mosaic/mosaic: update-checker module
  - @mosaic/cli: web search, file edit, MCP mgmt, file refs, /stop

packages/db/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mosaic/db",
-  "version": "0.0.1-alpha.1",
+  "version": "0.0.1-alpha.2",
   "type": "module",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",