fix(ai): frontend console error — fix missing build artifact and admin list fetch warning (agent)

- Added `start` script to `package.json` to ensure `npm run build` is executed before serving, preventing 404 errors for `css/tailwind.generated.css`.
- Updated `js/adminListStore.js` to include the super admin pubkey (decoded from `ADMIN_SUPER_NPUB`) in the filter when fetching admin lists. This resolves the warning: `[adminListStore] Cannot use incremental fetch for editors without author.`
- Added `scripts/agent/debug_frontend.py` to diagnose frontend errors using Playwright.
- Verified fixes by running the debug script and confirming warnings are gone.

scripts/agent/debug_frontend.py

@@ -1,25 +1,23 @@
-from playwright.sync_api import sync_playwright
-import time
 import sys
+from playwright.sync_api import sync_playwright
 
 def run():
     with sync_playwright() as p:
         browser = p.chromium.launch()
         page = browser.new_page()
 
-        print("--- Console Messages ---")
+        # Listen for console messages
         page.on("console", lambda msg: print(f"console:{msg.type}: {msg.text}"))
 
-        print("--- Page Errors ---")
+        # Listen for uncaught exceptions
         page.on("pageerror", lambda exc: print(f"pageerror: {exc}"))
 
-        print("--- Failed Requests ---")
+        # Listen for failed network requests
         page.on("requestfailed", lambda req: print(f"requestfailed: {req.url} {req.failure}"))
 
+        print("Navigating to http://localhost:8000 ...")
         try:
-            page.goto("http://localhost:8000")
-            # Wait for potential initialization errors
-            time.sleep(5)
+            page.goto("http://localhost:8000", wait_until="networkidle")
         except Exception as e:
             print(f"Navigation failed: {e}")