feat(google): add gemini-3.5-flash-lite to catalog

Credit: @HaydernCenterpoint (PR #220)

Co-authored-by: Haydern <HaydernCenterpoint@users.noreply.github.com>

Author: lidge-jun

src/providers/registry.ts

@@ -640,9 +640,9 @@ export const PROVIDER_REGISTRY: readonly ProviderRegistryEntry[] = [
   // devlog/_plan/260710_provider_hardening/001_research_frontier.md.
   {
     id: "google", label: "Google Gemini", adapter: "google", baseUrl: "https://generativelanguage.googleapis.com", authKind: "key", featured: true,
-    dashboardUrl: "https://aistudio.google.com/apikey", defaultModel: "gemini-3.5-flash", models: ["gemini-3.6-flash", "gemini-3.5-flash", "gemini-3.1-pro-preview"],
-    modelContextWindows: { "gemini-3.6-flash": 1_048_576, "gemini-3.5-flash": 1_000_000 },
-    modelInputModalities: { "gemini-3.6-flash": ["text", "image"] },
+    dashboardUrl: "https://aistudio.google.com/apikey", defaultModel: "gemini-3.5-flash", models: ["gemini-3.6-flash", "gemini-3.5-flash", "gemini-3.5-flash-lite", "gemini-3.1-pro-preview"],
+    modelContextWindows: { "gemini-3.6-flash": 1_048_576, "gemini-3.5-flash": 1_000_000, "gemini-3.5-flash-lite": 1_048_576 },
+    modelInputModalities: { "gemini-3.6-flash": ["text", "image"], "gemini-3.5-flash-lite": ["text"] },
     modelReasoningEfforts: {
       "gemini-3.6-flash": ["minimal", "low", "medium", "high"],
       "gemini-3.5-flash": ["minimal", "low", "medium", "high"],

tests/google-hardening.test.ts

@@ -149,7 +149,7 @@ describe("google provider hardening", () => {
     const vertex = PROVIDER_REGISTRY.find(entry => entry.id === "google-vertex");
 
     expect(google?.defaultModel).toBe("gemini-3.5-flash");
-    expect(google?.models).toEqual(["gemini-3.6-flash", "gemini-3.5-flash", "gemini-3.1-pro-preview"]);
+    expect(google?.models).toEqual(["gemini-3.6-flash", "gemini-3.5-flash", "gemini-3.5-flash-lite", "gemini-3.1-pro-preview"]);
     expect(google?.modelContextWindows?.["gemini-3.6-flash"]).toBe(1_048_576);
     expect(google?.modelContextWindows?.["gemini-3.5-flash"]).toBe(1_000_000);
     expect(google?.modelContextWindows?.["gemini-3.1-pro-preview"]).toBeUndefined();
@@ -165,4 +165,12 @@ describe("google provider hardening", () => {
     ]);
     expect(vertex?.defaultModel).toBe("gemini-3-pro");
   });
+
+  test("registers gemini-3.5-flash-lite with its text-only context metadata", () => {
+    const google = PROVIDER_REGISTRY.find(entry => entry.id === "google");
+
+    expect(google?.models).toContain("gemini-3.5-flash-lite");
+    expect(google?.modelContextWindows?.["gemini-3.5-flash-lite"]).toBe(1_048_576);
+    expect(google?.modelInputModalities?.["gemini-3.5-flash-lite"]).toEqual(["text"]);
+  });
 });