refactor: 重命名代理并优化模型配置分工

- 重命名代理并更新注释以明确各代理的职责，优化模型配置和分工结构。

oh-my-opencode.jsonc

@@ -1,29 +1,39 @@
 {
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
-    "Sisyphus": {
+    "sisyphus": {
+      // Primary orchestrator
       "model": "anthropic-gateway/claude-sonnet-4-5"
     },
-    "Planner-Sisyphus": {
+    "prometheus": {
+      // Strategic planning
       "model": "anthropic-gateway/claude-opus-4-5-thinking"
     },
+    "atlas": {
+      // Master orchestrator
+      "model": "anthropic-gateway/claude-sonnet-4-5"
+    },
     "oracle": {
+      // Consultation, debugging
       "model": "openai-gateway/gpt-5.2"
     },
+    "librarian": {
+      // Docs, GitHub search
+      "model": "glm-coding-plan/glm-4.7"
+    },
+    "explore": {
+      // Fast codebase grep
+      "model": "opencode/grok-code"
+    },
+    "multimodal-looker": {
+      // PDF/image analysis
+      "model": "google-gateway/gemini-3-flash"
+    },
     "frontend-ui-ux-engineer": {
       "model": "google-gateway/gemini-3-pro-high"
     },
-    "librarian": {
-      "model": "glm-coding-plan/glm-4.7"
-    },
-    "explore": {
-      "model": "opencode/grok-code"
-    },
     "document-writer": {
       "model": "google-gateway/gemini-3-flash"
-    },
-    "multimodal-looker": {
-      "model": "google-gateway/gemini-3-flash"
     }
   }
 }