feat(square): 新增发布广场功能，智能体/技能按广场分类展示

- 后端新增 PublishSquare/PublishSquaresSettings 配置与读写接口
- agents/skills 增加 square_id 字段及对应迁移脚本
- 前端新增发布广场设置页、技能转移选择器，画廊按广场分 Tab 展示
- lead_agent prompt 及若干持久化层适配调整

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

offline-backend-20260512/backend/packages/harness/deerflow/agents/lead_agent/agent.py

@@ -20,7 +20,7 @@ from deerflow.agents.middlewares.token_usage_middleware import TokenUsageMiddlew
 from deerflow.agents.middlewares.tool_error_handling_middleware import build_lead_runtime_middlewares
 from deerflow.agents.middlewares.view_image_middleware import ViewImageMiddleware
 from deerflow.agents.thread_state import ThreadState
-from deerflow.config.agents_config import load_agent_config, validate_agent_id
+from deerflow.config.agents_config import load_agent_config, load_agent_soul, validate_agent_id
 from deerflow.config.app_config import AppConfig, get_app_config
 from deerflow.models import create_chat_model
 
@@ -535,11 +535,30 @@ def _make_lead_agent(config: RunnableConfig, *, app_config: AppConfig):
 
         default_tools = [notebook_search_tool] + default_tools
 
-    return create_agent(
-        model=create_chat_model(name=model_name, thinking_enabled=thinking_enabled, reasoning_effort=reasoning_effort, app_config=resolved_app_config),
-        tools=default_tools,
-        middleware=_build_middlewares(config, model_name=model_name, agent_name=agent_id, app_config=resolved_app_config),
-        system_prompt=apply_prompt_template(
+    # Custom agents are steered ONLY by their own SOUL.md — no generic
+    # super-agent system template and no personal memory injection. We branch to
+    # the agent-only prompt builder whenever a custom agent config carries a
+    # non-empty SOUL.md. The plain default lead agent (no agent_config) and
+    # notebook mode keep the full template. See apply_agent_only_prompt_template.
+    has_agent_soul = bool(agent_config) and bool(load_agent_soul(agent_id))
+    use_agent_only_prompt = has_agent_soul and not is_notebook_mode
+
+    if use_agent_only_prompt:
+        from deerflow.agents.lead_agent.prompt import apply_agent_only_prompt_template
+
+        system_prompt = apply_agent_only_prompt_template(
+            agent_id=agent_id,
+            agent_name=agent_display_name,
+            subagent_enabled=subagent_enabled,
+            max_concurrent_subagents=max_concurrent_subagents,
+            available_skills=(set(agent_config.skills or []) if agent_config else None),
+            app_config=resolved_app_config,
+            rag_mode_enabled=rag_mode_enabled,
+            writing_mode=writing_mode,
+            writing_artifact_path=writing_artifact_path,
+        )
+    else:
+        system_prompt = apply_prompt_template(
             subagent_enabled=subagent_enabled,
             max_concurrent_subagents=max_concurrent_subagents,
             agent_id=agent_id,
@@ -552,6 +571,12 @@ def _make_lead_agent(config: RunnableConfig, *, app_config: AppConfig):
             rag_mode_enabled=rag_mode_enabled,
             is_notebook_mode=is_notebook_mode,
             notebook_source_ids=notebook_source_ids,
-        ),
+        )
+
+    return create_agent(
+        model=create_chat_model(name=model_name, thinking_enabled=thinking_enabled, reasoning_effort=reasoning_effort, app_config=resolved_app_config),
+        tools=default_tools,
+        middleware=_build_middlewares(config, model_name=model_name, agent_name=agent_id, app_config=resolved_app_config),
+        system_prompt=system_prompt,
         state_schema=ThreadState,
     )