fix(restructure): fix stale references missed by import rewrite

- plugins_cmd.py: import rewriter changed `import hermes_cli` to
  `import hermes_agent.cli` but left variable usage as `hermes_cli.__file__`,
  causing a NameError at runtime
- scripts/hermes-gateway: stale `from gateway.run import` (no .py extension
  so it was missed by **/*.py globs)
- scripts/install.ps1: stale `tools\skills_sync.py` path, use
  hermes-skills-sync console_script instead

hermes_agent/cli/plugins_cmd.py

@@ -631,8 +631,8 @@ def _plugin_exists(name: str) -> bool:
                 return True
     # Bundled: <repo>/plugins/<name>/
     from pathlib import Path as _P
-    import hermes_agent.cli
-    repo_plugins = _P(hermes_cli.__file__).resolve().parent.parent / "plugins"
+    import hermes_agent.cli as _cli_pkg
+    repo_plugins = _P(_cli_pkg.__file__).resolve().parent.parent / "plugins"
     if repo_plugins.is_dir():
         candidate = repo_plugins / name
         if candidate.is_dir() and (
@@ -659,8 +659,8 @@ def _discover_all_plugins() -> list:
     seen: dict = {}  # name -> (name, version, description, source, path)
 
     # Bundled (<repo>/plugins/<name>/), excluding memory/ and context_engine/
-    import hermes_agent.cli
-    repo_plugins = Path(hermes_cli.__file__).resolve().parent.parent / "plugins"
+    import hermes_agent.cli as _cli_pkg
+    repo_plugins = Path(_cli_pkg.__file__).resolve().parent.parent / "plugins"
     for base, source in ((repo_plugins, "bundled"), (_plugins_dir(), "user")):
         if not base.is_dir():
             continue

scripts/hermes-gateway

@@ -294,7 +294,7 @@ def is_windows() -> bool:
 
 def run_gateway():
     """Run the gateway in foreground."""
-    from gateway.run import start_gateway
+    from hermes_agent.gateway.run import start_gateway
     print("Starting Hermes Gateway...")
     print("Press Ctrl+C to stop.")
     print()

scripts/install.ps1

@@ -689,7 +689,7 @@ Delete the contents (or this file) to use the default personality.
     $pythonExe = "$InstallDir\venv\Scripts\python.exe"
     if (Test-Path $pythonExe) {
         try {
-            & $pythonExe "$InstallDir\tools\skills_sync.py" 2>$null
+            & "$InstallDir\venv\Scripts\hermes-skills-sync.exe" 2>$null
             Write-Success "Skills synced to ~/.hermes/skills/"
         } catch {
             # Fallback: simple directory copy