fix: JupyterHub DB path + user eric + OR mbtiles bounds + Hermes Dashboard

- Fix JupyterHub: sqlite db_url absolute path (was double-nested /srv/jupyterhub/srv/jupyterhub)
- Create user eric as admin in JupyterHub (id=2, authorized)
- Fix OpenRemote mbtiles: bounds metadata = world (-180,-85,180,85) for free zoom
- OR map API confirmed working: center=[-61,14.5], minZoom=0, bounds=Martinique
- Add Hermes Dashboard WebUI + TUI chat service (localhost:9119, auto-start at boot)
- Add generate_martinique_mbtiles.py script (future tile generation)

Known issues:
- JupyterHub spawn timeout (singleuser server slow to start, increased to 120s)
- OR mbtiles still contains Netherlands vector tiles (need Martinique tiles)
- Kafka, Trino still in restart loop (separate fix needed)

vre/jupyterhub/jupyterhub_config.py

@@ -9,14 +9,15 @@ c.JupyterHub.authenticator_class = 'nativeauthenticator.NativeAuthenticator'
 c.Authenticator.admin_users = {'admin'}
 c.Authenticator.allow_all = True
 
-# Spawner
+# Spawner - use DockerSpawner or simple with correct cmd
 c.JupyterHub.spawner_class = 'simple'
 c.Spawner.cmd = ['jupyterhub-singleuser']
-c.Spawner.default_url = '/lab'
+c.Spawner.http_timeout = 120
+c.Spawner.start_timeout = 120
 
-# Database and cookies
+# Database and cookies - use absolute paths
 c.JupyterHub.cookie_secret_file = '/srv/jupyterhub/jupyterhub_cookie_secret'
-c.JupyterHub.db_url = 'sqlite:///jupyterhub.sqlite'
+c.JupyterHub.db_url = 'sqlite:////srv/jupyterhub/jupyterhub.sqlite'
 
 # Base URL
 c.JupyterHub.base_url = '/'