fix: remove fake Claude/Gemini model aliases, use dynamic catalog

Remove non-existent Claude and Gemini model aliases from models.yaml.
Gemini /v1beta/models endpoint now reads from getModelCatalog() instead
of a hardcoded list.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

config/models.yaml

@@ -74,23 +74,3 @@ aliases:
   codex: "gpt-5.3-codex"
   codex-max: "gpt-5.1-codex-max"
   codex-mini: "gpt-5.1-codex-mini"
-
-  # Anthropic Claude model aliases
-  claude-sonnet-4-20250514: "gpt-5.3-codex"
-  claude-opus-4-20250514: "gpt-5.3-codex"
-  claude-sonnet-4-6: "gpt-5.3-codex"
-  claude-opus-4-6: "gpt-5.3-codex"
-  claude-haiku-4-5: "gpt-5.1-codex-mini"
-  claude-haiku-4-5-20251001: "gpt-5.1-codex-mini"
-  claude-3-5-sonnet-20241022: "gpt-5.3-codex"
-  claude-3-5-haiku-20241022: "gpt-5.1-codex-mini"
-  claude-3-opus-20240229: "gpt-5.3-codex"
-  claude-sonnet: "gpt-5.3-codex"
-  claude-opus: "gpt-5.3-codex"
-  claude-haiku: "gpt-5.1-codex-mini"
-
-  # Google Gemini model aliases
-  gemini-2.5-pro: "gpt-5.3-codex"
-  gemini-2.5-pro-preview: "gpt-5.3-codex"
-  gemini-2.5-flash: "gpt-5.1-codex-mini"
-  gemini-2.0-flash: "gpt-5.1-codex-mini"

src/routes/gemini.ts

@@ -21,7 +21,7 @@ import {
   collectCodexToGeminiResponse,
 } from "../translation/codex-to-gemini.js";
 import { getConfig } from "../config.js";
-import { resolveModelId } from "./models.js";
+import { getModelCatalog } from "./models.js";
 import {
   handleProxyRequest,
   type FormatAdapter,
@@ -167,19 +167,13 @@ export function createGeminiRoutes(
     );
   });
 
-  // List available Gemini models
+  // List available models (Gemini format)
   app.get("/v1beta/models", (c) => {
-    const geminiAliases = [
-      "gemini-2.5-pro",
-      "gemini-2.5-pro-preview",
-      "gemini-2.5-flash",
-      "gemini-2.0-flash",
-    ];
-
-    const models = geminiAliases.map((name) => ({
-      name: `models/${name}`,
-      displayName: name,
-      description: `Proxy alias for ${resolveModelId(name)}`,
+    const catalog = getModelCatalog();
+    const models = catalog.map((m) => ({
+      name: `models/${m.id}`,
+      displayName: m.displayName,
+      description: m.description,
       supportedGenerationMethods: [
         "generateContent",
         "streamGenerateContent",