Merge remote-tracking branch 'origin/master' into gitea/feature/end

Resolved conflicts taking origin/master (v0.5.55) as canonical, with local
features re-applied:
- runtime log level (LOG_LEVEL env + dashboard Settings → Logging, applied
  immediately and persisted across restarts)
- free/noAuth provider enable/disable toggle via providerStrategies.enabled
- parallel model testing (Test All Models / Test Selected Keys)

open-sse/providers/registry/gemini.js

@@ -16,6 +16,8 @@ export default {
     },
   },
   category: "freeTier",
+  authType: "apikey",
+  authModes: ["apikey"],
   mediaPriority: 1,
   transport: {
     baseUrl: "https://generativelanguage.googleapis.com/v1beta/models",
@@ -34,6 +36,9 @@ export default {
     },
   },
   models: [
+    { id: "gemini-3.7-flash", name: "Gemini 3.7 Flash" },
+    { id: "gemini-3.6-flash", name: "Gemini 3.6 Flash" },
+    { id: "gemini-3.5-flash-lite", name: "Gemini 3.5 Flash Lite" },
     { id: "gemini-3.1-pro-preview", name: "Gemini 3.1 Pro Preview" },
     { id: "gemini-3.1-flash-lite-preview", name: "Gemini 3.1 Flash Lite Preview" },
     { id: "gemini-3-flash-preview", name: "Gemini 3 Flash Preview" },