Refactor: ApplicationContext DI wiring (#131)

* refactor: wire all services through ApplicationContext

- Created src/application_context.py as DI container with TYPE_CHECKING imports
- server.py now instantiates all services in dependency order via ApplicationContext
- Fixed infinite recursion bug: 48 instance methods renamed with underscore prefix
  to avoid shadowing by same-named @classmethod forwarders
- ZeroconfServer: instantiate Zeroconf() in __init__, add _sync_class() to
  configure forwarder, direct _configure/_start calls during wiring
- Config, EngineManager, PreviewManager: all forwarders and _sync_class() intact
- RenderQueue: load_state and subscribe moved to __init__, threading.Lock retained
- DistributedJobManager: subscribe_to_listener moved to __init__

* fix: greedy regex in get_render_devices swallows BlenderKit log output

Changed regex from greedy [\s\S]* to non-greedy .*? with re.DOTALL
so it stops at the first ] (the end of the GPU data JSON array)
instead of matching through timestamped log lines like
[19:36:22.109, __init__.py:2881] that contain trailing brackets.

* fix: AttributeError on .enabled in update_job_count prevents options from rendering

* refactor: log silent AttributeError catches, add _sync_class to remaining services, drop dead ctx slot

server.py

@@ -11,6 +11,7 @@ from src.api.api_server import API_VERSION
 from src.api.api_server import start_api_server
 from src.api.preview_manager import PreviewManager
 from src.api.serverproxy_manager import ServerProxyManager
+from src.application_context import ApplicationContext
 from src.distributed_job_manager import DistributedJobManager
 from src.engines.engine_manager import EngineManager
 from src.render_queue import RenderQueue
@@ -26,21 +27,46 @@ logger = logging.getLogger()
 class ZordonServer:
 
     def __init__(self):
+        self.ctx = ApplicationContext()
+
         # setup logging
         logging.basicConfig(format='%(asctime)s: %(levelname)s: %(module)s: %(message)s', datefmt='%d-%b-%y %H:%M:%S',
                             level=Config.server_log_level.upper())
         logging.getLogger("requests").setLevel(logging.WARNING)  # suppress noisy requests/urllib3 logging
         logging.getLogger("urllib3").setLevel(logging.WARNING)
 
-        # Load Config YAML
+        # ---- Bootstrap Config ----
         Config.setup_config_dir()
         config_path = Path(Config.config_dir()) / "config.yaml"
-        Config.load_config(config_path)
+        self.ctx.config = Config()
+        self.ctx.config.load(config_path)
+        Config._default_instance = self.ctx.config
+        Config._sync_class()
 
-        # configure default paths
-        EngineManager.engines_path = str(Path(Config.upload_folder).expanduser()/ "engines")
-        os.makedirs(EngineManager.engines_path, exist_ok=True)
-        PreviewManager.storage_path = Path(Config.upload_folder).expanduser() / "previews"
+        # ---- Engine Manager ----
+        self.ctx.engine_manager = EngineManager()
+        self.ctx.engine_manager.engines_path = Path(Config.upload_folder).expanduser() / "engines"
+        os.makedirs(self.ctx.engine_manager.engines_path, exist_ok=True)
+        EngineManager._default_instance = self.ctx.engine_manager
+        EngineManager._sync_class()
+
+        # ---- Preview Manager ----
+        self.ctx.preview_manager = PreviewManager()
+        self.ctx.preview_manager.storage_path = Path(Config.upload_folder).expanduser() / "previews"
+        PreviewManager._default_instance = self.ctx.preview_manager
+        PreviewManager._sync_class()
+
+        # ---- Render Queue ----
+        self.ctx.render_queue = RenderQueue()
+        self.ctx.render_queue.load_state(database_directory=Path(Config.upload_folder).expanduser())
+        RenderQueue._default_instance = self.ctx.render_queue
+        RenderQueue._sync_class()
+
+        # ---- Distributed Job Manager ----
+        self.ctx.distributed_job_manager = DistributedJobManager()
+        self.ctx.distributed_job_manager.subscribe_to_listener()
+        DistributedJobManager._default_instance = self.ctx.distributed_job_manager
+        DistributedJobManager._sync_class()
 
         self.api_server = None
         self.server_hostname: str = socket.gethostname()
@@ -73,10 +99,8 @@ class ZordonServer:
         logger.debug(f"Upload directory: {Path(Config.upload_folder).expanduser()}")
         logger.debug(f"Thumbs directory: {PreviewManager.storage_path}")
         logger.debug(f"Engines directory: {EngineManager.engines_path}")
-        # Set up the RenderQueue object
-        RenderQueue.load_state(database_directory=Path(Config.upload_folder).expanduser())
+
         ServerProxyManager.subscribe_to_listener()
-        DistributedJobManager.subscribe_to_listener()
 
         # update hostname
         self.server_hostname = socket.gethostname()
@@ -87,16 +111,21 @@ class ZordonServer:
         self.api_server.start()
 
         # start zeroconf server
-        ZeroconfServer.configure(f"_{APP_NAME.lower()}._tcp.local.", self.server_hostname, Config.port_number)
-        ZeroconfServer.properties = {'system_cpu': current_system_cpu(),
-                                     'system_cpu_brand': current_system_cpu_brand(),
-                                     'system_cpu_cores': multiprocessing.cpu_count(),
-                                     'system_os': current_system_os(),
-                                     'system_os_version': current_system_os_version(),
-                                     'system_memory': round(psutil.virtual_memory().total / (1024**3)),  # in GB
-                                     'gpu_info': get_gpu_info(),
-                                     'api_version': API_VERSION}
-        ZeroconfServer.start()
+        ctx = self.ctx
+        ctx.zeroconf_server = ZeroconfServer()
+        ctx.zeroconf_server._configure(f"_{APP_NAME.lower()}._tcp.local.", self.server_hostname, Config.port_number)
+        ctx.zeroconf_server.properties = {'system_cpu': current_system_cpu(),
+                                          'system_cpu_brand': current_system_cpu_brand(),
+                                          'system_cpu_cores': multiprocessing.cpu_count(),
+                                          'system_os': current_system_os(),
+                                          'system_os_version': current_system_os_version(),
+                                          'system_memory': round(psutil.virtual_memory().total / (1024**3)),
+                                          'gpu_info': get_gpu_info(),
+                                          'api_version': API_VERSION}
+        ZeroconfServer._default_instance = ctx.zeroconf_server
+        ZeroconfServer._sync_class()
+        ctx.zeroconf_server._start()
+
         logger.info(f"{APP_NAME} Render Server started - Hostname: {self.server_hostname}")
         RenderQueue.start()  # Start evaluating the render queue
 
@@ -112,6 +141,7 @@ class ZordonServer:
             logger.exception(f"Exception during prepare for shutdown: {e}")
         logger.info(f"{APP_NAME} Render Server has shut down")
 
+
 if __name__ == '__main__':
     server = ZordonServer()
     try: