feat: add git policy - never auto commit without user permission

- Add git policy section in system prompt (gadget.py): no auto git add/commit
- Add policy warning in git_operation tool description (coder.py)
- LLM must ask user before running git add or git commit
- Safe commands (git status, git diff, git log) can run without asking
- When user asks to commit: show changes first, then wait for confirmation

scripts/gadget.py

@@ -33,6 +33,13 @@ def build_system_prompt(tools_definition):
         f"Your workspace directory is: {os.getcwd()}. "
         "All file operations are relative to this directory.",
         "",
+        "⚠️  GIT POLICY — IMPORTANT:",
+        "- NEVER run 'git add' or 'git commit' automatically after making changes.",
+        "- After editing/creating files, always ASK the user first before committing.",
+        "- Only run git commands when the user explicitly asks you to commit.",
+        "- You may run 'git status', 'git diff', 'git log' freely to inspect state.",
+        "- When user asks to commit: show them the changes first, then wait for confirmation.",
+        "",
         "RAG capabilities (knowledge retrieval):",
         "- list_collections       → see available collections & doc counts.",
         "- create_collection      → create a new collection for a new topic.",

tools/coder.py

@@ -146,7 +146,10 @@ schema_git_operation = {
     "type": "function",
     "function": {
         "name": "git_operation",
-        "description": "Run a git command. Pass the git arguments as a list (e.g., ['status', '--short'] for 'git status --short').",
+        "description": "Run a git command. Pass the git arguments as a list (e.g., ['status', '--short'] for 'git status --short'). "
+                       "POLICY: Never run 'git add' or 'git commit' without explicit user permission. "
+                       "Safe to run without asking: git status, git diff, git log. "
+                       "Always ask first before committing.",
         "parameters": {
             "type": "object",
             "properties": {