feat(agent-chat): complete core workflow and strengthen auth rate limiting

backend/src/core/config/static/agent_chat/crewai/agents.yaml

@@ -0,0 +1,9 @@
+intent:
+  role: Intent Agent
+  goal: Classify user intent and decide execution strategy
+execution:
+  role: Execution Agent
+  goal: Execute tasks with available tools
+organization:
+  role: Organization Agent
+  goal: Organize output for user-friendly response

backend/src/core/config/static/agent_chat/crewai/prompts/execution.md

@@ -0,0 +1,2 @@
+你是任务执行代理。
+基于输入意图与上下文调用可用工具，并生成可验证执行结果。

backend/src/core/config/static/agent_chat/crewai/prompts/intent.md

@@ -0,0 +1,2 @@
+你是意图识别代理。
+你的任务是识别用户输入的意图类型，并返回结构化意图标签。

backend/src/core/config/static/agent_chat/crewai/prompts/organization.md

@@ -0,0 +1,2 @@
+你是结果整理代理。
+将执行结果组织为面向用户的清晰回复，保留关键信息与必要引用。

backend/src/core/config/static/agent_chat/crewai/tasks.yaml

@@ -0,0 +1,6 @@
+intent:
+  description: Identify user intent and required capabilities
+execution:
+  description: Execute intent with tools and model calls
+organization:
+  description: Format final response and references

backend/src/core/config/static/agent_chat/crewai/workflow.yaml

@@ -0,0 +1,9 @@
+stages:
+  - intent
+  - execution
+  - organization
+
+timeouts:
+  intent_seconds: 8
+  execution_seconds: 30
+  organization_seconds: 10

backend/src/core/config/static/agent_chat/llm_catalog.yaml

@@ -0,0 +1,25 @@
+factories:
+  - name: qwen
+    request_url: https://dashscope.aliyuncs.com/compatible-mode/v1
+    avatar: https://cdn.simpleicons.org/alibabacloud/FF6A00
+  - name: minimax
+    request_url: https://api.minimax.chat/v1
+    avatar: https://cdn.simpleicons.org/minimax/1A1A1A
+  - name: kimi
+    request_url: https://api.moonshot.cn/v1
+    avatar: https://cdn.simpleicons.org/moonrepo/3B82F6
+  - name: deepseek
+    request_url: https://api.deepseek.com/v1
+    avatar: https://cdn.simpleicons.org/deepseek/4D6BFE
+  - name: doubao
+    request_url: https://ark.cn-beijing.volces.com/api/v3
+    avatar: https://cdn.simpleicons.org/volkswagen/001E50
+  - name: zai
+    request_url: https://api.z.ai/v1
+    avatar: https://cdn.simpleicons.org/zotero/CC2936
+
+llms:
+  - model_code: qwen3.5-flash
+    factory_id: qwen
+  - model_code: deepseek-v3.2
+    factory_id: deepseek

backend/src/core/config/static/agent_chat/tools.yaml

@@ -0,0 +1,3 @@
+tools:
+  - asr_fun_asr
+  - attachment_extract