refactor: split oversized modules and start server src/stores layout

Consolidate format helpers under lib/format, split React Query hooks by domain, extract AuthPicker/ConfigRefHint and HTTP trigger routing, demote file-private exports, and move KV/secrets/variables/profiles/http-auths stores under src/stores with root re-exports.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/server/script-sandbox.js

@@ -486,7 +486,7 @@ const inspectLog = pino({ level: "silent" });
  * @param {unknown} fn
  * @returns {{ meta: Record<string, unknown> | null, metaError: string | null }}
  */
-export function extractScriptMeta(fn) {
+function extractScriptMeta(fn) {
   if (typeof fn !== "function") {
     return { meta: null, metaError: "default export must be a function" };
   }