diff --git a/codex_telegram_bridge/readme.md b/codex_telegram_bridge/readme.md
index eb54297..48ecc18 100644
--- a/codex_telegram_bridge/readme.md
+++ b/codex_telegram_bridge/readme.md
@@ -23,7 +23,7 @@ chat_id = 123456789
 
 Optional keys:
 
-- exec/resume: `codex_workspace`, `codex_exec_args`, `max_workers`
+- exec/resume: `cd`, `codex_exec_args`
 
 ## Option 1: exec/resume
 
@@ -39,7 +39,7 @@ Optional flags:
 - `--progress-silent/--no-progress-silent` (default silent)
 - `--final-notify/--no-final-notify` (default notify via new message)
 - `--ignore-backlog/--process-backlog` (default ignore pending updates)
-- `--workdir PATH` (override `codex_workspace`)
+- `--cd PATH` (pass through to `codex --cd`)
 - `--model NAME` (pass through to `codex exec`)
 
 To resume an existing thread without a database, reply with (or include) the session id shown at the end of the bot response:
diff --git a/codex_telegram_bridge/src/codex_telegram_bridge/exec_bridge.py b/codex_telegram_bridge/src/codex_telegram_bridge/exec_bridge.py
index cf8ef9c..714bf96 100644
--- a/codex_telegram_bridge/src/codex_telegram_bridge/exec_bridge.py
+++ b/codex_telegram_bridge/src/codex_telegram_bridge/exec_bridge.py
@@ -350,10 +350,10 @@ def run(
         "--log-file",
         help="Write detailed debug logs to this file (set to empty to disable).",
     ),
-    workdir: str | None = typer.Option(
+    cd: str | None = typer.Option(
         None,
-        "--workdir",
-        help="Override codex workspace (--cd) for this exec-bridge run.",
+        "--cd",
+        help="Pass through to `codex --cd` (defaults to `cd` in ~/.codex/telegram.toml).",
     ),
     model: str | None = typer.Option(
         None,
@@ -372,7 +372,7 @@ def run(
     codex_cmd = shutil.which("codex")
     if not codex_cmd:
         raise RuntimeError("codex not found on PATH")
-    workspace = workdir if workdir is not None else config.get("codex_workspace")
+    workspace = cd if cd is not None else config.get("cd")
     raw_exec_args = config.get("codex_exec_args", "")
     if isinstance(raw_exec_args, list):
         extra_args = [str(v) for v in raw_exec_args]
@@ -405,8 +405,7 @@ def run(
         codex_cmd=codex_cmd, workspace=workspace, extra_args=extra_args
     )
 
-    max_workers = config.get("max_workers")
-    pool = ThreadPoolExecutor(max_workers=max_workers or 4)
+    pool = ThreadPoolExecutor(max_workers=16)
     offset: int | None = None
     ignore_backlog = bool(ignore_backlog)