feat: sync missing models from OpenRouter (fix watermark)

- Add 10 missing models released between 2026-06-30 and 2026-07-15
- OpenAI: GPT-5.6 Sol/Terra/Luna (+ Pro variants) — 6 models
- Anthropic: Claude Sonnet 5
- Google: Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite)
- xAI: Grok 4.5
- Tencent: Hy3 (stable release, distinct from hy3-preview)
- Update .sync-watermark from 1782276303 to 1784554658
- presetDataVersion: 79 → 80

compute/model-specs/tencent.json

@@ -1,6 +1,21 @@
 {
   "description": "腾讯混元系列模型规格。参数来源：config-center compute/providers/tencent.json。hunyuan-2.0-thinking 和 hunyuan-t1 为推理模型。",
   "specs": [
+    {
+      "id": "hy3",
+      "displayName": "混元 Hy3",
+      "family": "hy3",
+      "match": { "exact": ["hy3"], "patterns": ["hy3*"] },
+      "spec": {
+        "contextWindow": 262144,
+        "maxOutputTokens": 262144,
+        "capabilities": ["chat", "reasoning", "code", "tool_use", "agent"],
+        "serviceType": ["chat"],
+        "defaultTemperature": 0.9,
+        "supportsReasoning": true,
+        "description": "腾讯混元 Hy3 正式版，295B MoE（21B active），支持可配置推理强度"
+      }
+    },
     {
       "id": "hy3-preview",
       "displayName": "混元 Hy3 Preview",