feat: 为多个模型添加推理与多模态支持

- 为多个模型添加推理能力、多模态输入支持及相应的上下文和输出限制配置。

opencode.jsonc

@@ -19,13 +19,31 @@
       },
       "models": {
         "claude-opus-4-5-thinking": {
-          "name": "Claude Opus 4.5 (Thinking)"
+          "name": "Claude Opus 4.5 (Thinking)",
+          "reasoning": true,
+          "modalities": {
+            "input": ["text", "image", "pdf"],
+            "output": ["text"]
+          },
+          "limit": { "context": 200000, "output": 64000 }
         },
         "claude-sonnet-4-5-thinking": {
-          "name": "Claude Sonnet 4.5 (Thinking)"
+          "name": "Claude Sonnet 4.5 (Thinking)",
+          "reasoning": true,
+          "modalities": {
+            "input": ["text", "image", "pdf"],
+            "output": ["text"]
+          },
+          "limit": { "context": 200000, "output": 64000 }
         },
         "claude-sonnet-4-5": {
-          "name": "Claude Sonnet 4.5"
+          "name": "Claude Sonnet 4.5",
+          "reasoning": false,
+          "modalities": {
+            "input": ["text", "image", "pdf"],
+            "output": ["text"]
+          },
+          "limit": { "context": 200000, "output": 64000 }
         }
       }
     },
@@ -38,10 +56,22 @@
       },
       "models": {
         "gemini-3-pro": {
-          "name": "Gemini 3 Pro"
+          "name": "Gemini 3 Pro",
+          "reasoning": true,
+          "modalities": {
+            "input": ["text", "image", "video", "audio", "pdf"],
+            "output": ["text"]
+          },
+          "limit": { "context": 1048576, "output": 65536 }
         },
         "gemini-3-flash": {
-          "name": "Gemini 3 Flash"
+          "name": "Gemini 3 Flash",
+          "reasoning": true,
+          "modalities": {
+            "input": ["text", "image", "video", "audio", "pdf"],
+            "output": ["text"]
+          },
+          "limit": { "context": 1000000, "output": 64000 }
         }
       }
     },
@@ -56,12 +86,24 @@
       "models": {
         "gpt-5.2": {
           "name": "GPT-5.2",
+          "reasoning": true,
+          "modalities": {
+            "input": ["text", "image"],
+            "output": ["text"]
+          },
+          "limit": { "context": 400000, "output": 128000 },
           "options": {
             "reasoningEffort": "xhigh"
           }
         },
         "gpt-5.2-codex": {
           "name": "GPT-5.2-Codex",
+          "reasoning": true,
+          "modalities": {
+            "input": ["text", "image"],
+            "output": ["text"]
+          },
+          "limit": { "context": 400000, "output": 128000 },
           "options": {
             "reasoningEffort": "xhigh"
           }