feat: add --fuck-it-ship-it flag to bypass dangerous command approvals

Adds a fun alias for skipping all dangerous command approval prompts.
When passed, sets HERMES_YOLO_MODE=1 which causes check_dangerous_command()
to auto-approve everything.

Available on both top-level and chat subcommand:
  hermes --fuck-it-ship-it
  hermes chat --fuck-it-ship-it

Includes 5 tests covering normal blocking, yolo bypass, all patterns,
and edge cases (empty string env var).

tools/approval.py

@@ -250,6 +250,10 @@ def check_dangerous_command(command: str, env_type: str,
     if env_type in ("docker", "singularity", "modal", "daytona"):
         return {"approved": True, "message": None}
 
+    # --fuck-it-ship-it: bypass all approval prompts
+    if os.getenv("HERMES_YOLO_MODE"):
+        return {"approved": True, "message": None}
+
     is_dangerous, pattern_key, description = detect_dangerous_command(command)
     if not is_dangerous:
         return {"approved": True, "message": None}