Refine agent config schema and prompt file loading

config.example.json

@@ -21,28 +21,30 @@
         "max_summary_chars": 6000,
         "max_transcript_chars": 20000
       },
-      "runtime_control": {
-        "intent_max_input_chars": 1200,
-        "autolearn_max_rounds_without_user": 200,
+      "execution": {
         "run_state_ttl_seconds": 1800,
         "run_state_max": 500,
         "tool_parallel_safe_names": ["read_file", "list_files", "find_files", "grep_files", "memory_search", "web_search", "repo_map", "system_info"],
-        "tool_max_parallel_calls": 2,
-        "system_summary": {
-          "marker": "## System Task Summary",
-          "completed_prefix": "- Completed:",
-          "changes_prefix": "- Changes:",
-          "outcome_prefix": "- Outcome:",
-          "completed_title": "Completed Actions",
-          "changes_title": "Change Summaries",
-          "outcomes_title": "Execution Outcomes"
-        }
+        "tool_max_parallel_calls": 2
+      },
+      "summary_policy": {
+        "marker": "## System Task Summary",
+        "completed_prefix": "- Completed:",
+        "changes_prefix": "- Changes:",
+        "outcome_prefix": "- Outcome:",
+        "completed_title": "Completed Actions",
+        "changes_title": "Change Summaries",
+        "outcomes_title": "Execution Outcomes"
       }
     },
     "router": {
       "enabled": true,
       "main_agent_id": "main",
       "strategy": "rules_first",
+      "policy": {
+        "intent_max_input_chars": 1200,
+        "max_rounds_without_user": 200
+      },
       "rules": [
         {
           "agent_id": "coder",
@@ -73,7 +75,7 @@
         "type": "router",
         "display_name": "Main Agent",
         "role": "orchestrator",
-        "system_prompt": "你负责消息路由、任务拆解、仲裁与结果汇总。",
+        "system_prompt_file": "agents/main/AGENT.md",
         "memory_namespace": "main",
         "accept_from": ["user", "coder", "tester"],
         "can_talk_to": ["coder", "tester"],
@@ -94,7 +96,7 @@
         "type": "worker",
         "display_name": "Code Agent",
         "role": "code",
-        "system_prompt": "你负责代码实现与重构，输出具体修改建议和变更结果。",
+        "system_prompt_file": "agents/coder/AGENT.md",
         "memory_namespace": "coder",
         "accept_from": ["main", "tester"],
         "can_talk_to": ["main", "tester"],
@@ -117,7 +119,7 @@
         "type": "worker",
         "display_name": "Test Agent",
         "role": "test",
-        "system_prompt": "你负责测试、验证、回归检查与风险反馈。",
+        "system_prompt_file": "agents/tester/AGENT.md",
         "memory_namespace": "tester",
         "accept_from": ["main", "coder"],
         "can_talk_to": ["main", "coder"],