Fix distillation bugs: imports, auth security, and run configuration

- Fix bare imports in core/ modules to use fully-qualified paths (core.users, core.postgres)
- Fix scheduler/daemon.py importing os before use
- Fix verifyLoginToken returning truthy 401 on failure (security: invalid tokens were passing auth checks)
- Fix api/routes/example.py passing literal True as userUUID instead of decoded JWT sub
- Switch all services to python -m invocation so /app is always on sys.path
- Remove orphaned sys.path.insert hacks from bot.py, commands/example.py, routes/example.py
- Change API port mapping from 5000 to 8080
- Add config/.env and root .env for docker-compose variable substitution

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

scheduler/daemon.py

@@ -4,6 +4,7 @@ daemon.py - Background polling loop for scheduled tasks
 Override poll_callback() with your domain-specific logic.
 """
 
+import os
 import time
 import logging
 
@@ -32,6 +33,4 @@ def daemon_loop():
 
 
 if __name__ == "__main__":
-    import os
-
     daemon_loop()