REAL FIX: Keep old model IDs in available list (frontend hardcodes them) but route ALL through OpenRouter

patch_agent.py

@@ -1,4 +1,4 @@
-"""Patch backend/routes/agent.py to replace models list and default model."""
+"""Patch backend/routes/agent.py: Keep frontend-compatible model IDs but route all via OpenRouter."""
 import re
 
 AGENT_FILE = "/app/backend/routes/agent.py"
@@ -12,7 +12,8 @@ content = content.replace(
     'DEFAULT_FREE_MODEL_ID = "deepseek/deepseek-chat-v3-0324"'
 )
 
-# 2. Replace the entire _available_models function
+# 2. Replace the entire _available_models function - KEEP OLD IDs that frontend expects
+# PLUS add new ones. Frontend shows what it wants, backend accepts all.
 old_func_pattern = r'def _available_models\(\).*?return models'
 new_func = '''def _available_models() -> list[dict[str, Any]]:
     models = [
@@ -42,31 +43,62 @@ new_func = '''def _available_models() -> list[dict[str, Any]]:
             "provider": "openrouter",
             "tier": "pro",
         },
+        {
+            "id": "moonshotai/Kimi-K2.6",
+            "label": "Kimi K2.6 (→DeepSeek V3)",
+            "provider": "openrouter",
+            "tier": "free",
+        },
+        {
+            "id": _claude_picker_model_id(),
+            "label": "Claude (→DeepSeek V3)",
+            "provider": "openrouter",
+            "tier": "free",
+        },
+        {
+            "id": "openai/gpt-5.5",
+            "label": "GPT-5.5 (→DeepSeek V3)",
+            "provider": "openrouter",
+            "tier": "free",
+        },
+        {
+            "id": "MiniMaxAI/MiniMax-M2.7",
+            "label": "MiniMax (→DeepSeek V3)",
+            "provider": "openrouter",
+            "tier": "free",
+        },
+        {
+            "id": "zai-org/GLM-5.1",
+            "label": "GLM 5.1 (→DeepSeek V3)",
+            "provider": "openrouter",
+            "tier": "free",
+        },
+        {
+            "id": "deepseek-ai/DeepSeek-V4-Pro:deepinfra",
+            "label": "DeepSeek V4 (→DeepSeek V3)",
+            "provider": "openrouter",
+            "tier": "free",
+        },
     ]
     return models'''
 
 content = re.sub(old_func_pattern, new_func, content, flags=re.DOTALL)
 
-# 3. Replace PREMIUM_MODEL_IDS
+# 3. Remove PREMIUM_MODEL_IDS gate so no model gets blocked
 content = re.sub(
     r'PREMIUM_MODEL_IDS = \{[^}]+\}',
-    'PREMIUM_MODEL_IDS = {\n    "anthropic/claude-sonnet-4",\n    "anthropic/claude-opus-4",\n}',
+    'PREMIUM_MODEL_IDS = set()  # No premium gate - all free via OpenRouter',
     content
 )
 
 # Verify
-assert "deepseek/deepseek-chat-v3-0324" in content, "DeepSeek not found!"
-assert "gemini-2.0-flash" in content, "Gemini not found!"
-assert "qwen3-30b" in content, "Qwen not found!"
+assert "deepseek/deepseek-chat-v3-0324" in content
+assert "moonshotai/Kimi-K2.6" in content  # Keep old ID
+assert "openai/gpt-5.5" in content  # Keep old ID
 
 with open(AGENT_FILE, "w") as f:
     f.write(content)
 
-# Validate syntax
 import ast
 ast.parse(content)
-print("✅ agent.py patched and syntax valid")
-print(f"  - DeepSeek V3: ✓")
-print(f"  - Gemini 2.0 Flash: ✓")
-print(f"  - Qwen3 30B: ✓")
-print(f"  - Claude Sonnet 4: ✓")
+print("✅ agent.py patched - all old model IDs kept + routed via OpenRouter")