CI: publish every push to the staging registry

main → latest (the package.json version, skipped if already published), next → next,
other branches → dev-<branch> as <version>-<tag>.<timestamp> prereleases.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017Qxbkp4tA7G5SCWjzWuxmE

package.json

@@ -14,11 +14,15 @@
       "import": "./dist/index.js"
     }
   },
+  "publishConfig": {
+    "registry": "https://verdaccio.harvmaster.com/"
+  },
   "files": [
     "dist"
   ],
   "scripts": {
     "build": "tsc -p tsconfig.build.json",
+    "prepack": "npm run build",
     "typecheck": "tsc --noEmit",
     "test": "tsc --noEmit && vitest run",
     "test:watch": "vitest",