fix(gateway): include --profile in launchd/systemd argv for named profiles

generate_launchd_plist() and generate_systemd_unit() were missing the
--profile <name> argument in ProgramArguments/ExecStart, causing
hermes gateway start to regenerate plists that fell back to
~/.hermes/active_profile instead of the intended profile.

Fix:
- Add _profile_arg(hermes_home?) helper returning '--profile <name>'
  only for ~/.hermes/profiles/<name> paths, empty string otherwise.
- Update generate_launchd_plist() to build ProgramArguments array
  dynamically with --profile when applicable.
- Update generate_systemd_unit() both user and system service
  branches with {profile_arg} in ExecStart.

This ensures hermes --profile <name> gateway start produces a
service definition that correctly scopes to the named profile.

hermes_cli/gateway.py

@@ -267,6 +267,34 @@ def _profile_suffix() -> str:
     return hashlib.sha256(str(home).encode()).hexdigest()[:8]
 
 
+def _profile_arg(hermes_home: str | None = None) -> str:
+    """Return ``--profile <name>`` only when HERMES_HOME is a named profile.
+
+    For ``~/.hermes/profiles/<name>``, returns ``"--profile <name>"``.
+    For the default profile or hash-based custom paths, returns the empty string.
+
+    Args:
+        hermes_home: Optional explicit HERMES_HOME path. Defaults to the current
+            ``get_hermes_home()`` value. Should be passed when generating a
+            service definition for a different user (e.g. system service).
+    """
+    import re
+    from pathlib import Path as _Path
+    home = Path(hermes_home or str(get_hermes_home())).resolve()
+    default = (_Path.home() / ".hermes").resolve()
+    if home == default:
+        return ""
+    profiles_root = (default / "profiles").resolve()
+    try:
+        rel = home.relative_to(profiles_root)
+        parts = rel.parts
+        if len(parts) == 1 and re.match(r"^[a-z0-9][a-z0-9_-]{0,63}$", parts[0]):
+            return f"--profile {parts[0]}"
+    except ValueError:
+        pass
+    return ""
+
+
 def get_service_name() -> str:
     """Derive a systemd service name scoped to this HERMES_HOME.
 
@@ -626,6 +654,7 @@ def generate_systemd_unit(system: bool = False, run_as_user: str | None = None)
     if system:
         username, group_name, home_dir = _system_service_identity(run_as_user)
         hermes_home = _hermes_home_for_target_user(home_dir)
+        profile_arg = _profile_arg(hermes_home)
         path_entries.extend(_build_user_local_paths(Path(home_dir), path_entries))
         path_entries.extend(common_bin_paths)
         sane_path = ":".join(path_entries)
@@ -640,7 +669,7 @@ StartLimitBurst=5
 Type=simple
 User={username}
 Group={group_name}
-ExecStart={python_path} -m hermes_cli.main gateway run --replace
+ExecStart={python_path} -m hermes_cli.main{f" {profile_arg}" if profile_arg else ""} gateway run --replace
 WorkingDirectory={working_dir}
 Environment="HOME={home_dir}"
 Environment="USER={username}"
@@ -661,6 +690,7 @@ WantedBy=multi-user.target
 """
 
     hermes_home = str(get_hermes_home().resolve())
+    profile_arg = _profile_arg(hermes_home)
     path_entries.extend(_build_user_local_paths(Path.home(), path_entries))
     path_entries.extend(common_bin_paths)
     sane_path = ":".join(path_entries)
@@ -672,7 +702,7 @@ StartLimitBurst=5
 
 [Service]
 Type=simple
-ExecStart={python_path} -m hermes_cli.main gateway run --replace
+ExecStart={python_path} -m hermes_cli.main{f" {profile_arg}" if profile_arg else ""} gateway run --replace
 WorkingDirectory={working_dir}
 Environment="PATH={sane_path}"
 Environment="VIRTUAL_ENV={venv_dir}"
@@ -965,6 +995,7 @@ def generate_launchd_plist() -> str:
     log_dir = get_hermes_home() / "logs"
     log_dir.mkdir(parents=True, exist_ok=True)
     label = get_launchd_label()
+    profile_arg = _profile_arg(hermes_home)
     # Build a sane PATH for the launchd plist.  launchd provides only a
     # minimal default (/usr/bin:/bin:/usr/sbin:/sbin) which misses Homebrew,
     # nvm, cargo, etc.  We prepend venv/bin and node_modules/.bin (matching
@@ -986,21 +1017,32 @@ def generate_launchd_plist() -> str:
         dict.fromkeys(priority_dirs + [p for p in os.environ.get("PATH", "").split(":") if p])
     )
 
+    # Build ProgramArguments array, including --profile when using a named profile
+    prog_args = [
+        f"<string>{python_path}</string>",
+        "<string>-m</string>",
+        "<string>hermes_cli.main</string>",
+    ]
+    if profile_arg:
+        for part in profile_arg.split():
+            prog_args.append(f"<string>{part}</string>")
+    prog_args.extend([
+        "<string>gateway</string>",
+        "<string>run</string>",
+        "<string>--replace</string>",
+    ])
+    prog_args_xml = "\n        ".join(prog_args)
+
     return f"""<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
     <key>Label</key>
     <string>{label}</string>
-    
+
     <key>ProgramArguments</key>
     <array>
-        <string>{python_path}</string>
-        <string>-m</string>
-        <string>hermes_cli.main</string>
-        <string>gateway</string>
-        <string>run</string>
-        <string>--replace</string>
+        {prog_args_xml}
     </array>
     
     <key>WorkingDirectory</key>