Use named shell prompt for tmux containers

rvctl.py

@@ -3376,8 +3376,11 @@ def build_container_command(
     selector_slug = slug_value(selector.replace("/", "-"), "card selector")
     window_slug = slug_value(window_name, "tmux window name")
     user_name = current_user_slug()
+    host_uid = str(os.getuid())
+    host_gid = str(os.getgid())
     container_name_parts = [selector_slug, window_slug, profile, user_name]
     container_name = "-".join(container_name_parts)
+    shell_rcfile = tool_root / "configs" / "rv-shell.bashrc"
     env_parts = [
         f"WORKSPACE_ROOT={shlex.quote(str(config.workspace_root))}",
         f"RV_CARDS_ROOT={shlex.quote(str(config.series_root))}",
@@ -3387,6 +3390,9 @@ def build_container_command(
         f"RV_REPO_HOST={shlex.quote(str(card_path))}",
         f"RV_CARD={shlex.quote(selector)}",
         f"RV_INSTANCE={shlex.quote(instance)}",
+        f"RV_HOST_USER={shlex.quote(user_name)}",
+        f"RV_HOST_UID={host_uid}",
+        f"RV_HOST_GID={host_gid}",
         "RV_CODEX=0",
     ]
     compose_args = [
@@ -3405,6 +3411,16 @@ def build_container_command(
         "-e",
         f"HOME={home_dir}",
         "-e",
+        f"USER={user_name}",
+        "-e",
+        f"LOGNAME={user_name}",
+        "-e",
+        f"RV_HOST_USER={user_name}",
+        "-e",
+        f"RV_HOST_UID={host_uid}",
+        "-e",
+        f"RV_HOST_GID={host_gid}",
+        "-e",
         f"RV_REPO={card_path_text}",
         "-e",
         f"WORKSPACE_ROOT={config.workspace_root}",
@@ -3422,9 +3438,12 @@ def build_container_command(
         "RV_CODEX=0",
         "-v",
         f"{card_path_text}:{card_path_text}",
-        service,
-        "shell",
     ]
+    shell_args = [service, "shell"]
+    if shell_rcfile.is_file():
+        compose_args.extend(["-v", f"{shell_rcfile}:/tmp/rv-shell.bashrc:ro"])
+        shell_args.extend(["--rcfile", "/tmp/rv-shell.bashrc"])
+    compose_args.extend(shell_args)
     return " && ".join(
         [
             f"cd {shlex.quote(str(tool_root))}",