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.

packages/server/fs-store.js

@@ -49,12 +49,6 @@ export function readScript(name) {
   return fs.readFileSync(filePath, "utf8");
 }
 
-export function writeScript(name, content) {
-  assertScriptName(name);
-  fs.mkdirSync(SCRIPTS_DIR, { recursive: true });
-  fs.writeFileSync(path.join(SCRIPTS_DIR, name), content, "utf8");
-}
-
 /**
  * Icon next to the script: `fetch-html.js` → `fetch-html.png` or `.jpg`.
  * @returns {{ filePath: string, contentType: string } | null}
@@ -78,22 +72,6 @@ export function scriptHasIcon(name) {
   return resolveScriptIcon(name) != null;
 }
 
-export function deleteScript(name) {
-  assertScriptName(name);
-  const filePath = path.join(SCRIPTS_DIR, name);
-  if (!fs.existsSync(filePath)) return false;
-  const icon = resolveScriptIcon(name);
-  fs.unlinkSync(filePath);
-  if (icon) {
-    try {
-      fs.unlinkSync(icon.filePath);
-    } catch {
-      // ignore missing icon
-    }
-  }
-  return true;
-}
-
 export function listOwners() {
   if (!fs.existsSync(WORKFLOWS_DIR)) return [];
   return fs
@@ -140,15 +118,6 @@ export function writeWorkflowYaml(owner, file, content) {
   fs.writeFileSync(path.join(ownerDir, file), content, "utf8");
 }
 
-export function deleteWorkflowYaml(owner, file) {
-  assertOwner(owner);
-  assertWorkflowFile(file);
-  const filePath = path.join(WORKFLOWS_DIR, owner, file);
-  if (!fs.existsSync(filePath)) return false;
-  fs.unlinkSync(filePath);
-  return true;
-}
-
 export function listOwnerYamlFiles(owner) {
   const ownerDir = path.join(WORKFLOWS_DIR, owner);
   if (!fs.existsSync(ownerDir)) return [];