From 653f8092aea7e9b0d0e3f7ca7d6fd2a42f87e4a5 Mon Sep 17 00:00:00 2001
From: Tam Nhu Tran <kaitran.ntt@gmail.com>
Date: Sun, 22 Feb 2026 00:14:15 +0700
Subject: [PATCH] fix(cliproxy): add gemini 3.1 preview alias compatibility

---
 src/cliproxy/config/generator.ts             |  5 ++++-
 tests/unit/cliproxy/config-generator.test.js | 23 ++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/src/cliproxy/config/generator.ts b/src/cliproxy/config/generator.ts
index ca832297..c5de0df8 100644
--- a/src/cliproxy/config/generator.ts
+++ b/src/cliproxy/config/generator.ts
@@ -28,8 +28,9 @@ export const CCS_CONTROL_PANEL_SECRET = 'ccs';
  * v5: Added disable-cooling: true for stability
  * v6: Added oauth-model-alias with Opus 4.6 support
  * v7: Added fork:true for Claude model aliases (keep both upstream and alias names)
+ * v8: Added Gemini 3.1 preview aliases for provider routing compatibility
  */
-export const CLIPROXY_CONFIG_VERSION = 7;
+export const CLIPROXY_CONFIG_VERSION = 8;
 
 /**
  * Default Antigravity oauth-model-alias entries.
@@ -40,6 +41,8 @@ const DEFAULT_ANTIGRAVITY_ALIASES: Array<{ name: string; alias: string; fork?: b
   { name: 'rev19-uic3-1p', alias: 'gemini-2.5-computer-use-preview-10-2025' },
   { name: 'gemini-3-pro-image', alias: 'gemini-3-pro-image-preview' },
   { name: 'gemini-3-pro-high', alias: 'gemini-3-pro-preview' },
+  { name: 'gemini-3-pro-high', alias: 'gemini-3.1-pro-preview' },
+  { name: 'gemini-3-pro-high', alias: 'gemini-3.1-pro-preview-customtools' },
   { name: 'gemini-3-flash', alias: 'gemini-3-flash-preview' },
   { name: 'claude-sonnet-4-5', alias: 'gemini-claude-sonnet-4-5', fork: true },
   { name: 'claude-sonnet-4-5-thinking', alias: 'gemini-claude-sonnet-4-5-thinking', fork: true },
diff --git a/tests/unit/cliproxy/config-generator.test.js b/tests/unit/cliproxy/config-generator.test.js
index 22b28984..1a184bf9 100644
--- a/tests/unit/cliproxy/config-generator.test.js
+++ b/tests/unit/cliproxy/config-generator.test.js
@@ -621,6 +621,29 @@ auth-dir: "${cliproxyDir.replace(/\\/g, '/')}/auth"
       }
     });
 
+    it('generates Gemini 3.1 compatibility aliases without fork', () => {
+      regenerateConfig();
+
+      const cliproxyDir = path.join(testDir, '.ccs', 'cliproxy');
+      const config = fs.readFileSync(path.join(cliproxyDir, 'config.yaml'), 'utf-8');
+      const lines = config.split('\n');
+
+      const gemini31AliasLines = [
+        'alias: gemini-3.1-pro-preview',
+        'alias: gemini-3.1-pro-preview-customtools',
+      ];
+
+      for (const aliasLine of gemini31AliasLines) {
+        const lineIndex = lines.findIndex((line) => line.includes(aliasLine));
+        assert(lineIndex >= 0, `Should include ${aliasLine}`);
+        const nextLine = lines[lineIndex + 1] || '';
+        assert(
+          !nextLine.trim().startsWith('fork:'),
+          `Gemini alias should not have fork: ${aliasLine}`
+        );
+      }
+    });
+
     it('preserves user-added aliases with fork during regeneration', () => {
       const cliproxyDir = path.join(testDir, '.ccs', 'cliproxy');
       fs.mkdirSync(cliproxyDir, { recursive: true });