refactor: 统一注释为描述字段提升配置可读性

- 将注释统一替换为描述字段，提升配置文件的可读性和结构清晰度。

oh-my-opencode.jsonc

@@ -2,31 +2,31 @@
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
     "sisyphus": {
-      // Primary orchestrator
+      "description": "Primary orchestrator",
       "model": "cpa-anthropic/claude-opus-4-5-thinking"
     },
     "prometheus": {
-      // Strategic planning
+      "description": "Strategic planning",
       "model": "cpa-anthropic/claude-opus-4-5-thinking"
     },
     "atlas": {
-      // Master orchestrator
+      "description": "Master orchestrator",
       "model": "cpa-anthropic/claude-opus-4-5-thinking"
     },
     "oracle": {
-      // Consultation, debugging
+      "description": "Consultation, debugging",
       "model": "cpa-openai/gpt-5.2"
     },
     "librarian": {
-      // Docs, GitHub search
+      "description": "Docs, GitHub search",
       "model": "cpa-google/gemini-3-flash"
     },
     "explore": {
-      // Fast codebase grep
+      "description": "Fast codebase grep",
       "model": "cpa-google/gemini-3-flash"
     },
     "multimodal-looker": {
-      // PDF/image analysis
+      "description": "PDF/image analysis",
       "model": "cpa-google/gemini-3-flash"
     }
   },