refactor: drop --cd and simplify config lookup

developing.md

@@ -73,15 +73,15 @@ def render_markdown(md: str) -> tuple[str, list[dict[str, Any]]]:
 ### `config.py` — Configuration Loading
 
 ```python
-def load_telegram_config(path=None, *, base_dir=None) -> tuple[dict, Path]:
-    # Loads <base_dir>/codex/takopi.toml (if set), then ./codex/takopi.toml, then ~/.codex/takopi.toml
+def load_telegram_config(path=None) -> tuple[dict, Path]:
+    # Loads ./.codex/takopi.toml, then ~/.codex/takopi.toml
 ```
 
 ### `constants.py` — Shared Constants
 
 ```python
 TELEGRAM_HARD_LIMIT = 4096  # Max message length
-LOCAL_CONFIG_NAME = codex/takopi.toml
+LOCAL_CONFIG_NAME = .codex/takopi.toml
 HOME_CONFIG_PATH = ~/.codex/takopi.toml
 ```
 

readme.md

@@ -46,8 +46,6 @@ chat_id = 123456789
 
 The bridge only accepts messages where the chat ID equals the sender ID and both match `chat_id` (i.e., private chat with that user).
 
-When you pass `--cd`, Takopi looks for `.codex/takopi.toml` under that directory first.
-
 ### Codex Profile (Optional)
 
 Create a Codex profile in `~/.codex/config.toml`:
@@ -75,7 +73,6 @@ uv run takopi
 |------|---------|-------------|
 | `--final-notify` / `--no-final-notify` | `--final-notify` | Send final response as new message (vs. edit) |
 | `--debug` / `--no-debug` | `--no-debug` | Enable verbose logging |
-| `--cd PATH` | cwd | Working directory for Codex |
 | `--profile NAME` | (codex default) | Codex profile name |
 
 ## Usage

src/takopi/config.py

@@ -46,16 +46,10 @@ def _missing_config_message(primary: Path, alternate: Path | None = None) -> str
     )
 
 
-def _config_candidates(base_dir: Path | None) -> list[Path]:
-    candidates: list[Path] = []
-    if base_dir is not None:
-        candidates.append(base_dir / LOCAL_CONFIG_NAME)
-
-    cwd = Path.cwd()
-    if base_dir is None or base_dir != cwd:
-        candidates.append(cwd / LOCAL_CONFIG_NAME)
-
-    candidates.append(HOME_CONFIG_PATH)
+def _config_candidates() -> list[Path]:
+    candidates = [Path.cwd() / LOCAL_CONFIG_NAME, HOME_CONFIG_PATH]
+    if candidates[0] == candidates[1]:
+        return [candidates[0]]
     return candidates
 
 
@@ -72,17 +66,16 @@ def _read_config(cfg_path: Path) -> dict:
         raise ConfigError(f"Malformed TOML in {cfg_path}: {e}") from None
 
 
-def load_telegram_config(
-    path: str | Path | None = None, *, base_dir: str | Path | None = None
-) -> tuple[dict, Path]:
+def load_telegram_config(path: str | Path | None = None) -> tuple[dict, Path]:
     if path:
         cfg_path = Path(path).expanduser()
         return _read_config(cfg_path), cfg_path
 
-    base = Path(base_dir).expanduser() if base_dir is not None else None
-    candidates = _config_candidates(base)
+    candidates = _config_candidates()
     for candidate in candidates:
         if candidate.is_file():
             return _read_config(candidate), candidate
 
+    if len(candidates) == 1:
+        raise ConfigError(_missing_config_message(candidates[0]))
     raise ConfigError(_missing_config_message(HOME_CONFIG_PATH, candidates[0]))

src/takopi/exec_bridge.py

@@ -194,11 +194,9 @@ class CodexExecRunner:
     def __init__(
         self,
         codex_cmd: str,
-        workspace: str | None,
         extra_args: list[str],
     ) -> None:
         self.codex_cmd = codex_cmd
-        self.workspace = workspace
         self.extra_args = extra_args
 
         # Per-session locks to prevent concurrent resumes to the same session_id.
@@ -219,14 +217,10 @@ class CodexExecRunner:
         session_id: str | None,
         on_event: EventCallback | None = None,
     ) -> tuple[str, str, bool]:
-        logger.info(
-            "[codex] start run session_id=%r workspace=%r", session_id, self.workspace
-        )
+        logger.info("[codex] start run session_id=%r", session_id)
         logger.debug("[codex] prompt: %s", prompt)
         args = [self.codex_cmd]
         args.extend(self.extra_args)
-        if self.workspace:
-            args.extend(["--cd", self.workspace])
         args.extend(["exec", "--json"])
 
         # Always pipe prompt via stdin ("-") to avoid quoting issues.
@@ -355,19 +349,11 @@ class BridgeConfig:
 def _parse_bridge_config(
     *,
     final_notify: bool,
-    cd: str | None,
     profile: str | None,
 ) -> BridgeConfig:
     startup_pwd = os.getcwd()
-    workspace = None
-    if cd is not None:
-        expanded_cd = os.path.expanduser(cd)
-        if not os.path.isdir(expanded_cd):
-            raise ConfigError(f"--cd must be an existing directory: {expanded_cd}")
-        workspace = expanded_cd
-        startup_pwd = expanded_cd
 
-    config, config_path = load_telegram_config(base_dir=workspace)
+    config, config_path = load_telegram_config()
     try:
         token = config["bot_token"]
     except KeyError:
@@ -396,7 +382,7 @@ def _parse_bridge_config(
         extra_args.extend(["--profile", profile])
 
     bot = TelegramClient(token)
-    runner = CodexExecRunner(codex_cmd=codex_cmd, workspace=workspace, extra_args=extra_args)
+    runner = CodexExecRunner(codex_cmd=codex_cmd, extra_args=extra_args)
 
     return BridgeConfig(
         bot=bot,
@@ -691,11 +677,6 @@ def run(
         "--debug/--no-debug",
         help="Log codex JSONL, Telegram requests, and rendered messages.",
     ),
-    cd: str | None = typer.Option(
-        None,
-        "--cd",
-        help="Pass through to `codex --cd`.",
-    ),
     profile: str | None = typer.Option(
         None,
         "--profile",
@@ -706,7 +687,6 @@ def run(
     try:
         cfg = _parse_bridge_config(
             final_notify=final_notify,
-            cd=cd,
             profile=profile,
         )
     except ConfigError as e:

tests/test_exec_runner.py

@@ -4,7 +4,7 @@ from takopi.exec_bridge import CodexExecRunner
 
 
 def test_run_serialized_serializes_same_session() -> None:
-    runner = CodexExecRunner(codex_cmd="codex", workspace=None, extra_args=[])
+    runner = CodexExecRunner(codex_cmd="codex", extra_args=[])
     gate = asyncio.Event()
     in_flight = 0
     max_in_flight = 0