Add deploy script and update prod compose

Deploy script builds and pushes images to Gitea registry, then triggers
Portainer stack redeployment via API. Includes preflight checks for
branch and uncommitted changes. Also renames prod DB volume to avoid
conflicts with dev and changes frontend port to 9080.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.beans/nuzlocke-tracker-aiw6--create-deploy-script.md

@@ -1,11 +1,11 @@
 ---
 # nuzlocke-tracker-aiw6
 title: Create deploy script
-status: todo
+status: in-progress
 type: task
 priority: normal
 created_at: 2026-02-09T15:30:48Z
-updated_at: 2026-02-09T15:31:15Z
+updated_at: 2026-02-09T17:22:53Z
 parent: nuzlocke-tracker-ahza
 blocking:
     - nuzlocke-tracker-izf6