chore(deps): update pnpm version and clean up package.json; remove unused dependencies and scripts

- Updated package manager to pnpm@11.22.0 in package.json.
- Removed unused dependencies and scripts from package.json and pnpm-lock.yaml.
- Cleaned up fs-store.js and other files by removing commented-out code and unused imports.
- Updated workflow configurations to use environment variables for URLs.

package.json

@@ -16,14 +16,5 @@
     "start:control": "pnpm --filter @jerapah-flow/server start:control",
     "migrate": "pnpm --filter @jerapah-flow/server migrate"
   },
-  "packageManager": "pnpm@10.25.0",
-  "pnpm": {
-    "onlyBuiltDependencies": [
-      "better-sqlite3",
-      "esbuild"
-    ]
-  },
-  "dependencies": {
-    "rss-parser": "^3.13.0"
-  }
+  "packageManager": "pnpm@11.22.0"
 }