refactor: move all server config to startup env vars; drop plugin settings

opencode_bridge/config.py

@@ -1,18 +1,25 @@
 """Configuration resolution for the opencode-bridge extension.
 
-Priority order (highest to lowest):
-  1. jupyter settings dict (from schema/plugin.json)
-  2. Environment variables (OPENCODE_BRIDGE_URL, _USER, _PASSWORD)
-  3. Built-in defaults
+All connection fields (URL / user / password / request timeout) are resolved
+exclusively from environment variables + built-in defaults at server startup.
+They are NOT stored in the JupyterLab plugin settings.
+
+Env vars:
+  OPENCODE_BRIDGE_URL       — OpenCode Serve base URL (default http://127.0.0.1:4096)
+  OPENCODE_BRIDGE_USER      — HTTP Basic Auth username (default 'opencode')
+  OPENCODE_BRIDGE_PASSWORD  — HTTP Basic Auth password (default '' = no auth)
+  OPENCODE_BRIDGE_TIMEOUT   — request timeout in seconds (default 120)
 """
 from __future__ import annotations
 
 import os
 from typing import NamedTuple, Optional, Tuple
 
+
 ENV_URL = "OPENCODE_BRIDGE_URL"
 ENV_USER = "OPENCODE_BRIDGE_USER"
 ENV_PASSWORD = "OPENCODE_BRIDGE_PASSWORD"
+ENV_TIMEOUT = "OPENCODE_BRIDGE_TIMEOUT"
 
 DEFAULT_URL = "http://127.0.0.1:4096"
 DEFAULT_USER = "opencode"
@@ -23,7 +30,7 @@ class OpenCodeConfig(NamedTuple):
     url: str
     user: str
     password: str
-    request_timeout_seconds: int = DEFAULT_REQUEST_TIMEOUT
+    request_timeout_seconds: int
 
     @property
     def auth(self) -> Optional[Tuple[str, str]]:
@@ -34,18 +41,18 @@ class OpenCodeConfig(NamedTuple):
 
 
 def resolve_config(jupyter_settings: dict) -> OpenCodeConfig:
-    """Resolve OpenCode connection config from jupyter settings + env + defaults."""
-    bridge = jupyter_settings.get("opencode_bridge", {}) or {}
+    """Resolve OpenCode connection config from environment variables + defaults.
 
+    The `jupyter_settings` argument is accepted for API compatibility but no
+    fields are read from it — all connection config is now startup-only
+    (environment variables).
+    """
+    _ = jupyter_settings  # intentionally unused; see module docstring
     return OpenCodeConfig(
-        url=bridge.get("opencodeServerUrl") or os.environ.get(ENV_URL) or DEFAULT_URL,
-        user=bridge.get("opencodeServerUser") or os.environ.get(ENV_USER) or DEFAULT_USER,
-        password=(
-            bridge.get("opencodeServerPassword")
-            or os.environ.get(ENV_PASSWORD)
-            or ""
-        ),
+        url=os.environ.get(ENV_URL) or DEFAULT_URL,
+        user=os.environ.get(ENV_USER) or DEFAULT_USER,
+        password=os.environ.get(ENV_PASSWORD) or "",
         request_timeout_seconds=int(
-            bridge.get("requestTimeoutSeconds", DEFAULT_REQUEST_TIMEOUT)
-        ),
+            os.environ.get(ENV_TIMEOUT) or DEFAULT_REQUEST_TIMEOUT
+        )
     )