feat: 添加视觉设计语言系统并重构认证页面UI

- 新增 visual_design_language.md 设计规范文档
- 新增 auth 设计 tokens (authBackground, authCard, authInput, feedback 系列等)
- 重构登录/注册/验证码/重置密码页面为新设计系统
- 新增 AuthHeroHeader, AuthSurfaceCard, AuthSection, AuthField, PasswordField 组件
- 重构 AppBanner 和 Toast 支持多类型配置 (info/success/warning/error)
- 后端 AgentScope: 重整 schemas/prompts/tools 作用域, 新增协议文档
- 更新 AGENTS.md 集成视觉设计语言约束

backend/src/schemas/agent/__init__.py

@@ -1,54 +1,52 @@
 from schemas.agent.agui_input import (
     extract_latest_tool_result,
+    extract_latest_user_content,
+    extract_latest_user_payload,
+    extract_latest_user_text,
     parse_run_input,
     validate_run_request_messages_contract,
 )
-from schemas.agent.agent_runtime import (
-    AcceptedTaskResponse,
-    AgUiWireEvent,
-    HistorySnapshotResponse,
-    InternalRuntimeEvent,
-    ResumeCommand,
-    RunCommand,
-    TaskAccepted,
-    TaskAcceptedResponse,
-)
 from schemas.agent.runtime_models import (
+    ResultType,
     RouterAgentOutput,
+    RouterUiDecision,
+    RunStatus,
     ToolAgentOutput,
-    UiHintsPayload,
+    ToolStatus,
+    UiMode,
+    WorkerAgentOutputLite,
+    WorkerAgentOutputRich,
     WorkerAgentOutput,
+    resolve_worker_output_model,
 )
-from schemas.agent.execution import (
-    ExecutionBatchOutput,
-    ExecutionTaskOutput,
+from schemas.agent.ui_hints import (
+    UiHintAction,
+    UiHintBlock,
+    UiHintsPayload,
 )
-from schemas.agent.intent import IntentOutput, IntentTask
-from schemas.agent.report import ReportOutput
-from schemas.agent.runtime import RuntimeOutput
-from schemas.agent.config import SystemAgentLLMConfig
+from schemas.agent.system_agent import AgentType, SystemAgentLLMConfig
 
 __all__ = [
-    "AgUiWireEvent",
-    "AcceptedTaskResponse",
-    "ExecutionBatchOutput",
-    "ExecutionTaskOutput",
-    "HistorySnapshotResponse",
-    "IntentOutput",
-    "IntentTask",
-    "InternalRuntimeEvent",
+    "AgentType",
+    "ResultType",
+    "RouterAgentOutput",
+    "RouterUiDecision",
+    "RunStatus",
+    "SystemAgentLLMConfig",
+    "ToolAgentOutput",
+    "ToolStatus",
+    "UiMode",
+    "UiHintAction",
+    "UiHintBlock",
+    "UiHintsPayload",
+    "WorkerAgentOutputLite",
+    "WorkerAgentOutputRich",
+    "WorkerAgentOutput",
+    "resolve_worker_output_model",
+    "extract_latest_tool_result",
+    "extract_latest_user_content",
+    "extract_latest_user_payload",
+    "extract_latest_user_text",
     "parse_run_input",
     "validate_run_request_messages_contract",
-    "extract_latest_tool_result",
-    "SystemAgentLLMConfig",
-    "ReportOutput",
-    "ResumeCommand",
-    "RouterAgentOutput",
-    "RuntimeOutput",
-    "RunCommand",
-    "TaskAccepted",
-    "TaskAcceptedResponse",
-    "ToolAgentOutput",
-    "UiHintsPayload",
-    "WorkerAgentOutput",
 ]