fix(utils): handle missing funcschema parameter docs

src/langbot/pkg/api/http/controller/groups/plugins.py

@@ -39,6 +39,16 @@ def _normalize_plugin_asset_path(filepath: str) -> str | None:
     return f'assets/{normalized}'
 
 
+def _get_request_origin() -> str:
+    """Return the public request origin, respecting reverse-proxy headers."""
+    forwarded_proto = quart.request.headers.get('X-Forwarded-Proto', '').split(',')[0].strip()
+    forwarded_host = quart.request.headers.get('X-Forwarded-Host', '').split(',')[0].strip()
+
+    scheme = forwarded_proto or quart.request.scheme
+    host = forwarded_host or quart.request.host
+    return f'{scheme}://{host}'
+
+
 @group.group_class('plugins', '/api/v1/plugins')
 class PluginsRouterGroup(group.RouterGroup):
     async def _check_extensions_limit(self) -> str | None:
@@ -189,7 +199,7 @@ class PluginsRouterGroup(group.RouterGroup):
             # CSP for HTML pages served to sandboxed iframes (opaque origin).
             # 'self' doesn't work in sandboxed iframes — use actual server origin.
             if mime_type and mime_type.startswith('text/html'):
-                origin = f'{quart.request.scheme}://{quart.request.host}'
+                origin = _get_request_origin()
                 resp.headers['Content-Security-Policy'] = (
                     f'default-src {origin}; '
                     f"script-src {origin} 'unsafe-inline'; "

src/langbot/pkg/utils/funcschema.py

@@ -83,7 +83,7 @@ def get_func_schema(function: typing.Callable) -> dict:
 
         parameters['properties'][param.name] = {
             'type': param_type,
-            'description': args_doc[param.name],
+            'description': args_doc.get(param.name, ''),
         }
 
         # add schema for array

tests/unit_tests/utils/test_funcschema.py

@@ -0,0 +1,15 @@
+from langbot.pkg.utils.funcschema import get_func_schema
+
+
+def test_get_func_schema_uses_empty_description_for_undocumented_parameter():
+    def sample_function(documented: str, undocumented: int):
+        """Sample function.
+
+        Args:
+            documented(str): documented parameter description
+        """
+
+    schema = get_func_schema(sample_function)
+
+    assert schema['parameters']['properties']['documented']['description'] == 'documented parameter description'
+    assert schema['parameters']['properties']['undocumented']['description'] == ''

web/src/app/infra/http/BackendClient.ts

@@ -590,6 +590,9 @@ export class BackendClient extends BaseHttpClient {
     name: string,
     filepath: string,
   ): string {
+    if (this.instance.defaults.baseURL === '/') {
+      return `${window.location.origin}/api/v1/plugins/${author}/${name}/assets/${filepath}`;
+    }
     return (
       this.instance.defaults.baseURL +
       `/api/v1/plugins/${author}/${name}/assets/${filepath}`