fix(ai): prevent race condition in login modal initialization (agent)

Removes a premature call to `initializeLoginModalController` in `ApplicationBootstrap` which was attempting to initialize the login modal before the DOM was fully hydrated, causing a "modal container not found" warning during startup. The modal is already correctly initialized later in `js/index.js` after markup loading completes.

js/ui/applicationBootstrap.js

@@ -395,8 +395,6 @@ export default class ApplicationBootstrap {
     app.loginModalController = null;
     app.currentUserNpub = null;
 
-    app.initializeLoginModalController({ logIfMissing: true });
-
     app.profileButton = doc?.getElementById("profileButton") || null;
     app.profileAvatar = doc?.getElementById("profileAvatar") || null;
 

scripts/agent/debug_frontend.py

@@ -0,0 +1,30 @@
+from playwright.sync_api import sync_playwright
+import sys
+import time
+
+def run():
+    with sync_playwright() as p:
+        browser = p.chromium.launch(headless=True)
+        page = browser.new_page()
+
+        # Subscribe to console messages
+        page.on("console", lambda msg: print(f"console:{msg.type}: {msg.text}"))
+
+        # Subscribe to uncaught exceptions
+        page.on("pageerror", lambda exc: print(f"pageerror: {exc}"))
+
+        # Subscribe to failed network requests
+        page.on("requestfailed", lambda req: print(f"requestfailed: {req.url} {req.failure}"))
+
+        try:
+            # Navigate to localhost
+            page.goto("http://localhost:8000", wait_until="networkidle")
+            # Wait a bit for async operations
+            time.sleep(2)
+        except Exception as e:
+            print(f"Error navigating: {e}")
+        finally:
+            browser.close()
+
+if __name__ == "__main__":
+    run()