feat: deliver installable local alpha sessions

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a03397-4d51-7fd1-8ff2-946eb22ea2bc

src/tamq/control.py

@@ -1,6 +1,8 @@
 from __future__ import annotations
 
+import os
 import subprocess
+from collections.abc import Sequence
 from dataclasses import dataclass
 
 
@@ -11,13 +13,19 @@ class ControlModeError(RuntimeError):
 @dataclass
 class ControlModeClient:
     session: str
+    tmux_command: Sequence[str] | None = None
     process: subprocess.Popen[str] | None = None
 
     def start(self) -> None:
         if self.process is not None:
             return
+        socket_name = os.environ.get("TAMQ_TMUX_SOCKET")
+        command = tuple(
+            self.tmux_command
+            or (["tmux", "-L", socket_name] if socket_name else ["tmux"])
+        )
         self.process = subprocess.Popen(
-            ["tmux", "-C", "attach-session", "-t", self.session],
+            [*command, "-C", "attach-session", "-t", self.session],
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
@@ -37,7 +45,13 @@ class ControlModeClient:
 
     def close(self) -> None:
         if self.process is not None:
-            self.process.terminate()
+            process = self.process
+            process.terminate()
+            try:
+                process.wait(timeout=1)
+            except subprocess.TimeoutExpired:
+                process.kill()
+                process.wait(timeout=1)
             self.process = None