feat(agent): redesign project_cli with module/method/input protocol

- Replace command/subcommand/args with module/method/input envelope
- Calendar handler uses discriminated union (mode) for read operations
- Strict Pydantic models with extra='forbid' for all calendar methods
- Worker max_iters=7, router prompt simplified (removed project_cli_defaults)
- Skill index cards + per-action files for progressive disclosure
- Frontend/AG-UI aligned to module/method dispatch
- Protocol docs updated to module/method/input contract

WIP: action cards need envelope fix, 2 tests need update, memory
handler needs Pydantic models.

backend/tests/integration/test_cli_skills_live.py

@@ -252,8 +252,8 @@ async def test_calendar_create_skill_creates_db_record() -> None:
         assert cli_result.get("status") == "success", f"Tool call failed: {cli_result}"
 
         args = cli_result.get("tool_call_args", {})
-        assert args.get("command") == "calendar"
-        assert args.get("subcommand") == "create"
+        assert args.get("module") == "calendar"
+        assert args.get("method") == "create"
 
         result_payload = cli_result.get("result")
         assert isinstance(result_payload, dict), f"Unexpected result payload: {cli_result}"
@@ -317,8 +317,8 @@ async def test_calendar_read_skill_queries_db() -> None:
         assert cli_result.get("status") in {"success", "partial"}, f"Tool call failed: {cli_result}"
 
         args = cli_result.get("tool_call_args", {})
-        assert args.get("command") == "calendar"
-        assert args.get("subcommand") == "read"
+        assert args.get("module") == "calendar"
+        assert args.get("method") in {"read"}
 
 
 @pytest.mark.asyncio
@@ -355,8 +355,8 @@ async def test_contacts_read_skill_queries_db() -> None:
         assert cli_result.get("status") in {"success", "partial"}, f"Tool call failed: {cli_result}"
 
         args = cli_result.get("tool_call_args", {})
-        assert args.get("command") == "contacts"
-        assert args.get("subcommand") == "read"
+        assert args.get("module") == "contacts"
+        assert args.get("method") == "read"
 
 
 @pytest.mark.asyncio
@@ -398,8 +398,8 @@ async def test_memory_update_skill_via_automation() -> None:
         assert cli_result.get("status") in {"success", "partial"}, f"Tool call failed: {cli_result}"
 
         args = cli_result.get("tool_call_args", {})
-        assert args.get("command") == "memory"
-        assert args.get("subcommand") == "update"
+        assert args.get("module") == "memory"
+        assert args.get("method") == "update"
 
         if user_id:
             time.sleep(1)