Add Gitea PR automation script

- Create automation/gitea-pr.sh for auto-creating PRs via Gitea API
- Update CLAUDE.md with git workflow using the new script
- Deprecate redundant git instructions in PA general-instructions.json
- Token stored securely at ~/.config/gitea-token

Usage: gitea-pr.sh "PR Title" "Description"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

state/personal-assistant/general-instructions.json

@@ -10,14 +10,14 @@
     },
     {
       "id": "b2c3d4e5-6789-01bc-def0-222222222222",
-      "instruction": "Create a new git branch when working on new features (e.g., feature/descriptive-name). Commit work to the branch before rebasing and pushing.",
-      "status": "active",
+      "instruction": "Git workflow: See CLAUDE.md for full process. Use rebase merges, not merge commits.",
+      "status": "deprecated",
       "added": "2026-01-03"
     },
     {
       "id": "c3d4e5f6-7890-12cd-ef01-333333333333",
-      "instruction": "The ~/.claude repo uses Gitea (not GitHub). After pushing a branch, create PR manually via Gitea web UI - gh CLI won't work.",
-      "status": "active",
+      "instruction": "Git workflow: See CLAUDE.md for full process.",
+      "status": "deprecated",
       "added": "2026-01-03"
     }
   ]