feat(api): Add lightweight HTTP server for API hooks

gui.py

@@ -25,6 +25,7 @@ import shell_runner
 import session_logger
 import project_manager
 import theme
+import api_hooks
 
 CONFIG_PATH = Path("config.toml")
 PROVIDERS = ["gemini", "anthropic"]
@@ -396,6 +397,7 @@ class App:
     def __init__(self):
         self.config = load_config()
         self.test_hooks_enabled = '--enable-test-hooks' in sys.argv or os.environ.get('SLOP_TEST_HOOKS') == '1'
+        self.hook_server = api_hooks.HookServer(self)
 
         # ---- global settings from config.toml ----
         ai_cfg = self.config.get("ai", {})
@@ -2057,6 +2059,8 @@ class App:
         self._rebuild_projects_list()
         self._rebuild_discussion_selector()
         self._fetch_models(self.current_provider)
+        
+        self.hook_server.start()
 
         while dpg.is_dearpygui_running():
             # Show any pending confirmation dialog on the main thread safely
@@ -2184,6 +2188,7 @@ class App:
         dpg.save_init_file("dpg_layout.ini")
         session_logger.close_session()
         ai_client.cleanup()  # Destroy active API caches to stop billing
+        self.hook_server.stop()
         dpg.destroy_context()