feat(gateway): add gemma and qwen vision models with pricing

llm-gateway.yaml

@@ -314,6 +314,58 @@ models:
       - provider: openrouter
         model: "google/gemini-2.5-pro-preview"
 
+  # ═══ TIER 10: Vision / Multimodal ═══
+  - name: "gemma-3-4b"
+    routes:
+      - provider: openrouter
+        model: "google/gemma-3-4b-it"
+        pricing: { input: 0.017, output: 0.068 }
+      - provider: deepinfra
+        model: "google/gemma-3-4b-it"
+        pricing: { input: 0.04, output: 0.08 }
+
+  - name: "gemma-3-12b"
+    routes:
+      - provider: openrouter
+        model: "google/gemma-3-12b-it"
+        pricing: { input: 0.03, output: 0.10 }
+      - provider: deepinfra
+        model: "google/gemma-3-12b-it"
+        pricing: { input: 0.04, output: 0.13 }
+
+  - name: "gemma-3-27b"
+    routes:
+      - provider: openrouter
+        model: "google/gemma-3-27b-it"
+        pricing: { input: 0.04, output: 0.15 }
+      - provider: deepinfra
+        model: "google/gemma-3-27b-it"
+        pricing: { input: 0.08, output: 0.16 }
+
+  - name: "qwen3-vl-8b"
+    routes:
+      - provider: openrouter
+        model: "qwen/qwen3-vl-8b-instruct"
+        pricing: { input: 0.08, output: 0.50 }
+      - provider: deepinfra
+        model: "Qwen/Qwen3-VL-8B-Instruct"
+        pricing: { input: 0.18, output: 0.69 }
+
+  - name: "qwen3-vl-32b"
+    routes:
+      - provider: openrouter
+        model: "qwen/qwen3-vl-32b-instruct"
+        pricing: { input: 0.104, output: 0.416 }
+
+  - name: "qwen2.5-vl-32b"
+    routes:
+      - provider: openrouter
+        model: "qwen/qwen2.5-vl-32b-instruct"
+        pricing: { input: 0.05, output: 0.22 }
+      - provider: deepinfra
+        model: "Qwen/Qwen2.5-VL-32B-Instruct"
+        pricing: { input: 0.20, output: 0.60 }
+
   - name: "claude-sonnet"
     routes:
       - provider: openrouter