fix(observer): v12 — skip prompt-only code text + enrichment validation (v0.5.44) #task-619

- extractContextFromNearby: PROMPT_ONLY_RE skips code elements containing only terminal prompts (e.g. '\\gravity_control >')
- Multi-codeEl traversal: tries all code elements at each depth, picks longest non-prompt text
- http-bridge enrichment: validates extracted command is not just a prompt fragment before enriching
- Fixes: cmd='\\gravity_control >' (prompt-only) no longer sent to Discord as the command text

extension/package.json

@@ -2,7 +2,7 @@
   "name": "gravity-bridge",
   "displayName": "Gravity Bridge",
   "description": "Discord-based unified approval system for Antigravity AI interactions.",
-  "version": "0.5.43",
+  "version": "0.5.44",
   "publisher": "variet",
   "engines": {
     "vscode": "^1.100.0"