feat：优化执行步骤

app/actions/batch.py

@@ -5,10 +5,11 @@
 
 from copy import deepcopy
 
+from app.actions.layout import EXPANDERS
 from app.actions.registry import apply_action
 from app.actions.update import fit_existing_path
 from app.resources.material_fields import check_update_field, find_material
-from app.schemas.actions import Action, AddAction, UpdateAction
+from app.schemas.actions import Action, AddAction, AgentAction, UpdateAction
 from app.schemas.capabilities import DATA_BINDING_ERROR, DATA_BINDING_SUPPORTED
 from app.schemas.component_resource import ComponentCatalog
 from app.schemas.screen import Screen, ScreenNode
@@ -17,12 +18,15 @@ from app.schemas.screen import Screen, ScreenNode
 class BatchError(ValueError):
     """整批中第 index 个动作（从 0 开始）失败，消息里带上序号和目标，模型据此修正"""
 
-    def __init__(self, index: int, action: Action, reason: str):
+    def __init__(self, index: int, action: AgentAction, reason: str):
         self.index = index
         self.reason = reason
-        target = getattr(action, "target_id", None)
-        if target is None:
-            target = action.node.id if isinstance(action, AddAction) else "画布"
+        if isinstance(action, AddAction):
+            target = action.node.id
+        elif ids := getattr(action, "target_ids", None):
+            target = "、".join(ids)
+        else:
+            target = getattr(action, "target_id", "画布")
         super().__init__(f"第 {index + 1} 个动作（{action.type} {target}）：{reason}")
 
 
@@ -57,13 +61,22 @@ def complete_add(action: AddAction, catalog: ComponentCatalog) -> AddAction:
 
 
 def run_batch(
-    screen: Screen, catalog: ComponentCatalog, actions: list[Action]
+    screen: Screen, catalog: ComponentCatalog, actions: list[AgentAction]
 ) -> tuple[list[Action], Screen]:
-    """从原始大屏开始按顺序模拟执行，返回前端要执行的动作和执行后的大屏；第一个错误抛 BatchError"""
+    """从原始大屏开始按顺序模拟执行，返回前端要执行的动作和执行后的大屏；第一个错误抛 BatchError
+
+    布局意图（arrange、align、distribute、set_layout）在这里按当时的大屏展开成 move 和 resize
+    """
     current = screen.model_copy(deep=True)
     completed: list[Action] = []
     for index, action in enumerate(actions):
         try:
+            if expander := EXPANDERS.get(action.type):
+                expanded = expander(current, action)
+                for primitive in expanded:
+                    current = apply_action(current, primitive)
+                completed.extend(expanded)
+                continue
             if isinstance(action, AddAction):
                 action = complete_add(action, catalog)
             elif isinstance(action, UpdateAction):

app/actions/layout.py

@@ -0,0 +1,152 @@
+"""布局意图展开：算出每个组件的目标位置和尺寸，输出前端已有的 move 和 resize
+
+纯函数，只读大屏；只输出有变化的动作。坐标取整，相邻组件共用同一条边，避免累积误差
+"""
+
+from math import ceil
+
+from app.schemas.actions import (
+    AlignAction,
+    ArrangeAction,
+    DistributeAction,
+    MoveAction,
+    ResizeAction,
+    SetLayoutAction,
+)
+from app.schemas.actions.layout import Area
+from app.schemas.screen import Screen, ScreenNode
+
+Primitive = MoveAction | ResizeAction
+
+
+def _nodes(screen: Screen, ids: list[str]) -> list[ScreenNode]:
+    by_id = {node.id: node for node in screen.nodes}
+    if missing := [item for item in ids if item not in by_id]:
+        raise ValueError(f"目标组件不存在: {'、'.join(missing)}")
+    return [by_id[item] for item in ids]
+
+
+def _place(node: ScreenNode, x, y, width, height) -> list[Primitive]:
+    """从当前布局变成目标布局，没变的项不输出"""
+    layout = node.layout
+    result: list[Primitive] = []
+    if (x, y) != (layout.x, layout.y):
+        result.append(
+            MoveAction(target_id=node.id, delta_x=x - layout.x, delta_y=y - layout.y)
+        )
+    if (width, height) != (layout.width, layout.height):
+        result.append(ResizeAction(target_id=node.id, width=width, height=height))
+    return result
+
+
+def _canvas_area(screen: Screen) -> Area:
+    return Area(x=0, y=0, width=screen.canvas.width, height=screen.canvas.height)
+
+
+def _bounds(nodes: list[ScreenNode]) -> Area:
+    left = min(n.layout.x for n in nodes)
+    top = min(n.layout.y for n in nodes)
+    right = max(n.layout.x + n.layout.width for n in nodes)
+    bottom = max(n.layout.y + n.layout.height for n in nodes)
+    return Area(x=left, y=top, width=right - left, height=bottom - top)
+
+
+def arrange(screen: Screen, action: ArrangeAction) -> list[Primitive]:
+    nodes = _nodes(screen, action.target_ids)
+    count = len(nodes)
+    columns = {"row": count, "column": 1, "grid": action.columns}[action.mode]
+    rows = ceil(count / columns)
+    area = action.area or _canvas_area(screen)
+    left = area.x + action.padding
+    top = area.y + action.padding
+    cell_w = (area.width - 2 * action.padding - action.gap * (columns - 1)) / columns
+    cell_h = (area.height - 2 * action.padding - action.gap * (rows - 1)) / rows
+    if cell_w <= 0 or cell_h <= 0:
+        raise ValueError(
+            f"区域放不下 {count} 个组件：区域 {area.width:g}x{area.height:g}，"
+            f"边距 {action.padding:g}、间距 {action.gap:g}，减小间距或边距"
+        )
+    result: list[Primitive] = []
+    for index, node in enumerate(nodes):
+        row, column = divmod(index, columns)
+        x0 = left + column * (cell_w + action.gap)
+        y0 = top + row * (cell_h + action.gap)
+        # 取整的是边，不是宽度，相邻单元格不会因为取整多出缝隙或重叠
+        x, y = round(x0), round(y0)
+        result += _place(node, x, y, round(x0 + cell_w) - x, round(y0 + cell_h) - y)
+    return result
+
+
+def align(screen: Screen, action: AlignAction) -> list[Primitive]:
+    nodes = _nodes(screen, action.target_ids)
+    box = _canvas_area(screen) if action.to == "canvas" else _bounds(nodes)
+    result: list[Primitive] = []
+    for node in nodes:
+        layout = node.layout
+        x, y = layout.x, layout.y
+        if action.horizontal == "left":
+            x = box.x
+        elif action.horizontal == "center":
+            x = round(box.x + (box.width - layout.width) / 2)
+        elif action.horizontal == "right":
+            x = box.x + box.width - layout.width
+        if action.vertical == "top":
+            y = box.y
+        elif action.vertical == "middle":
+            y = round(box.y + (box.height - layout.height) / 2)
+        elif action.vertical == "bottom":
+            y = box.y + box.height - layout.height
+        result += _place(node, x, y, layout.width, layout.height)
+    return result
+
+
+def distribute(screen: Screen, action: DistributeAction) -> list[Primitive]:
+    horizontal = action.axis == "horizontal"
+    nodes = sorted(
+        _nodes(screen, action.target_ids),
+        key=lambda n: n.layout.x if horizontal else n.layout.y,
+    )
+    box = action.area or _bounds(nodes)
+    start, span = (box.x, box.width) if horizontal else (box.y, box.height)
+    sizes = [n.layout.width if horizontal else n.layout.height for n in nodes]
+    if action.gap is not None:
+        gap = action.gap
+    elif len(nodes) < 2:
+        raise ValueError("摊匀间距至少需要 2 个组件")
+    else:
+        gap = (span - sum(sizes)) / (len(nodes) - 1)
+        if gap < 0:
+            raise ValueError(
+                f"这些组件的{'宽' if horizontal else '高'}度合计 {sum(sizes):g}，"
+                f"超过可用的 {span:g}，排不开"
+            )
+    result: list[Primitive] = []
+    cursor = start
+    for node, size in zip(nodes, sizes, strict=True):
+        position = round(cursor)
+        layout = node.layout
+        x, y = (position, layout.y) if horizontal else (layout.x, position)
+        result += _place(node, x, y, layout.width, layout.height)
+        cursor += size + gap
+    return result
+
+
+def set_layout(screen: Screen, action: SetLayoutAction) -> list[Primitive]:
+    (node,) = _nodes(screen, [action.target_id])
+    layout = node.layout
+    return _place(
+        node,
+        layout.x if action.x is None else action.x,
+        layout.y if action.y is None else action.y,
+        layout.width if action.width is None else action.width,
+        layout.height if action.height is None else action.height,
+    )
+
+
+# 布局意图的 type -> 展开函数；新增意图时在这里注册
+EXPANDERS = {
+    "arrange": arrange,
+    "align": align,
+    "distribute": distribute,
+    "set_layout": set_layout,
+}

app/agent/screen_agent.py

@@ -14,7 +14,7 @@ from langchain_core.messages import AIMessage, HumanMessage
 from loguru import logger
 from pydantic import BaseModel, Field, model_validator
 
-from app.agent.skills import skill_middleware
+from app.agent.skills import skills_prompt
 from app.agent.tools import (
     ScreenAgentContext,
     ScreenAgentState,
@@ -37,6 +37,7 @@ SYSTEM_PROMPT = f"""你是大屏编辑助手，按用户的要求新建大屏，
 <clarify_rules>
 默认先执行：缺少的细节（位置、尺寸、标题、样式等）用合理的默认值补齐
 只有无法确定用户指的是哪个组件，或看不出用户要做什么时才追问；澄清记录里已经回答过的不再问
+用户要改的组件在大屏上不存在时，说明这一点并给出可行的替代做法（例如新增一个），不要让用户去选中或指出组件
 只删除用户明确要求删除的组件；不确定删哪个时追问，不要猜
 </clarify_rules>"""
 
@@ -107,13 +108,12 @@ async def get_screen_agent():
         _agent = create_agent(
             model=get_llm(),
             tools=[get_nodes, apply_actions, *await get_mcp_tools()],
-            system_prompt=SYSTEM_PROMPT,
+            system_prompt=f"{SYSTEM_PROMPT}\n\n{skills_prompt()}",
             # 用工具调用给出结论：试过原生结构化输出（ProviderStrategy），歧义时模型更常直接执行而不追问，评测多删了组件
             response_format=ToolStrategy(AgentReply),
             state_schema=ScreenAgentState,
             context_schema=ScreenAgentContext,
             middleware=[
-                *skill_middleware(),
                 require_tool_call,
                 # 超过上限时插入说明并结束，没有结构化结果，由节点按失败处理
                 ModelCallLimitMiddleware(

app/agent/skills.py

@@ -1,44 +1,33 @@
-"""skill 渐进式加载：目录追加到系统提示，正文和附件由模型用 read_file 按需读取
+"""skill 正文直接写进系统提示
 
-加载、解析和校验都由 Deep Agents 的 SkillsMiddleware 完成，这里只有配置
+skill 总共几 KB，每次调用都会命中提示缓存；如果让模型自己 read_file，每个请求要多 2 次串行调用，
+每次几秒，比多带这几 KB 贵得多。需要附件（references/）的 skill 出现后，再改回按需读取
 """
 
 from pathlib import Path
 
-from deepagents.backends.filesystem import FilesystemBackend
-from deepagents.middleware.filesystem import FilesystemMiddleware
-from deepagents.middleware.skills import SkillsMiddleware
-from langchain.agents.middleware import AgentMiddleware
-
 SKILLS_ROOT = Path(__file__).resolve().parents[2] / "skills"
 
-# 必须保留三个占位符；目录每一行的格式由库固定
-SKILLS_PROMPT = """<skills>
-以下 skill 提供特定任务的做法。{skills_locations}{skills_load_warnings}
 
-{skills_list}
-
-使用方式：
-1. 任务符合某个 skill 的描述时，先用 read_file 读取它的 SKILL.md 再动手，传 limit=1000（默认只读 100 行）
-2. 正文中引用的文件写的是相对路径，拼在该 skill 的目录后再读取，例如 chart-replace 正文里的 references/a.md 要读 /chart-replace/references/a.md
-3. 一个请求可以用到多个 skill
-</skills>"""
+def _split_frontmatter(text: str) -> tuple[dict[str, str], str]:
+    _, header, body = text.split("---", 2)
+    meta = {}
+    for line in header.strip().splitlines():
+        key, _, value = line.partition(":")
+        meta[key.strip()] = value.strip()
+    return meta, body.strip()
 
 
-def skill_middleware(root: Path = SKILLS_ROOT) -> list[AgentMiddleware]:
-    # virtual_mode：路径以 skills/ 为根，拦截 ..、~ 和根目录以外的路径
-    backend = FilesystemBackend(root_dir=root, virtual_mode=True)
-    return [
-        FilesystemMiddleware(
-            backend=backend,
-            # 只开放读取，不提供写入、搜索和执行
-            tools=["read_file"],
-            # 关闭大结果写盘，否则会往 skills/ 里写文件
-            tool_token_limit_before_evict=None,
-            human_message_token_limit_before_evict=None,
-        ),
-        # 用元组写明来源标签，裸路径 "/" 的标签会变成 Unnamed
-        SkillsMiddleware(
-            backend=backend, sources=[("/", "大屏")], system_prompt=SKILLS_PROMPT
-        ),
-    ]
+def skills_prompt(root: Path = SKILLS_ROOT) -> str:
+    """每个 skill 一段：description 说明什么时候用，正文是做法；任务符合描述时按正文做，一个请求可以用到多个"""
+    sections = []
+    for path in sorted(root.glob("*/SKILL.md")):
+        meta, body = _split_frontmatter(path.read_text(encoding="utf-8"))
+        sections.append(
+            f'<skill name="{meta["name"]}">\n适用：{meta["description"]}\n\n{body}\n</skill>'
+        )
+    return (
+        "<skills>\n以下 skill 提供特定任务的做法，任务符合“适用”时按正文做，一个请求可以用到多个\n\n"
+        + "\n\n".join(sections)
+        + "\n</skills>"
+    )

app/agent/tools.py

@@ -13,7 +13,7 @@ from langgraph.types import Command
 from pydantic import Field
 
 from app.actions.batch import BatchError, run_batch
-from app.schemas.actions import Action, AddAction
+from app.schemas.actions import Action, AddAction, AgentAction
 from app.schemas.component_resource import ComponentCatalog
 from app.schemas.screen import Screen
 
@@ -51,21 +51,55 @@ def get_nodes(node_ids: list[str], runtime: ToolRuntime[ScreenAgentContext]) ->
     }
 
 
-def _result_text(actions: list[Action]) -> str:
+def _result_text(
+    before: Screen,
+    after: Screen,
+    actions: list[Action],
+    undeclared_sample: frozenset[str] = frozenset(),
+) -> str:
+    """执行结果：除了动作数量，还给出执行后的画布和每个组件的布局
+
+    模型提交后才第一次看到结果，能自己发现位置超出画布、互相重叠、没排整齐等问题再修正，
+    不用靠重复提交来试；本次动过布局或新增的组件前面标 *，已删除的单独列出
+    """
     lines = [f"执行成功，共 {len(actions)} 个动作已生效"]
-    if sample := [
+    sample = [
         action.node.id
         for action in actions
         if isinstance(action, AddAction) and action.sample_data
+    ]
+    # 模型没写 sample_data 时是后端按物料猜的；说明这一点和怎么改，否则模型只看到“用了示例数据”，
+    # 以为是自己的数据没生效，会反复提交同样的内容
+    if guessed := [item for item in sample if item in undeclared_sample]:
+        lines.append(
+            f"未写 sample_data，按物料默认标成了示例数据：{'、'.join(guessed)}；"
+            "如果这些组件展示的数据都来自大屏上已有的组件，把 sample_data 设为 false 重新提交整批，否则不用处理"
+        )
+    if declared := [item for item in sample if item not in undeclared_sample]:
+        lines.append(f"标为示例数据的新增组件：{'、'.join(declared)}")
+
+    old_layouts = {node.id: node.layout for node in before.nodes}
+    lines.append(
+        f"执行后画布 {after.canvas.width:g}x{after.canvas.height:g}，组件布局（* 为本次改动）："
+    )
+    for node in after.nodes:
+        layout = node.layout
+        mark = "*" if old_layouts.get(node.id) != layout else " "
+        lines.append(
+            f"{mark} {node.id} {node.type} "
+            f"x={layout.x:g} y={layout.y:g} width={layout.width:g} height={layout.height:g}"
+        )
+    if removed := [
+        item for item in old_layouts if item not in {n.id for n in after.nodes}
     ]:
-        lines.append(f"使用物料示例数据的新增组件：{'、'.join(sample)}")
+        lines.append(f"已删除：{'、'.join(removed)}")
     return "\n".join(lines)
 
 
 @tool
 def apply_actions(
     actions: Annotated[
-        list[Action],
+        list[AgentAction],
         # 空的一批会清掉之前成功的结果；参数校验失败不改状态，之前的结果保留
         Field(min_length=1, description="至少一个动作；不需要修改时不要调用，直接回复"),
     ],
@@ -74,10 +108,11 @@ def apply_actions(
     """提交本次要对大屏做的全部修改
 
     每次调用都是完整的一批，从原始大屏开始按顺序模拟执行，不在上一次调用的结果上累加
+    成功时返回执行后的画布和各组件布局，用它核对结果，不对再重新提交整批
     失败时整批不生效，返回带动作序号的错误，修正后重新提交整批；以最后一次调用的结果为准
     """
     try:
-        completed, _ = run_batch(
+        completed, after = run_batch(
             runtime.context.screen, runtime.context.catalog, actions
         )
     except BatchError as error:
@@ -93,12 +128,34 @@ def apply_actions(
                 ],
             }
         )
+    # 和上一次成功的提交完全一样：结果早已生效，再提交不会有变化，直接告诉模型结束，不再空转
+    if completed == runtime.state.get("actions"):
+        return Command(
+            update={
+                "messages": [
+                    ToolMessage(
+                        "这一批的结果和上一次提交完全相同，已经生效，不要重复提交；"
+                        "任务完成就调用 AgentReply 回复用户，没完成就改成不同的内容",
+                        tool_call_id=runtime.tool_call_id,
+                    )
+                ],
+            }
+        )
+    undeclared = frozenset(
+        action.node.id
+        for action in actions
+        if isinstance(action, AddAction)
+        and "sample_data" not in action.model_fields_set
+    )
     return Command(
         update={
             "actions": completed,
             "apply_error": None,
             "messages": [
-                ToolMessage(_result_text(completed), tool_call_id=runtime.tool_call_id)
+                ToolMessage(
+                    _result_text(runtime.context.screen, after, completed, undeclared),
+                    tool_call_id=runtime.tool_call_id,
+                )
             ],
         }
     )

app/clients/llm.py

@@ -23,6 +23,7 @@ def _get_base_llm() -> ChatOpenAI:
         base_url=settings.llm_base_url,
         timeout=settings.llm_timeout,
         max_retries=settings.llm_max_retries,
+        reasoning_effort=settings.llm_reasoning_effort,
     )
 
 

app/clients/user_center.py

@@ -1,5 +1,6 @@
 """用户中心客户端：用请求携带的 token 换取当前用户，结果短时缓存"""
 
+import asyncio
 import hashlib
 import time
 from functools import cache
@@ -14,6 +15,9 @@ from app.schemas.user import CurrentUser
 # 用户中心 401 时提示调用方用 Bearer token 重新认证
 BEARER_CHALLENGE = {"WWW-Authenticate": "Bearer"}
 
+# 瞬时故障的重试间隔（秒），长度即重试次数
+RETRY_DELAYS = (0.2, 0.5)
+
 
 class UserCenterClient:
     def __init__(
@@ -55,23 +59,41 @@ class UserCenterClient:
             del self._cache[stale]
         self._cache[key] = (now + ttl, user)
 
+    async def _request_with_retry(self, token: str) -> httpx.Response:
+        """校验是幂等的 GET：连接失败、超时和 5xx 属于瞬时故障，短间隔重试"""
+        attempts = 1 + len(RETRY_DELAYS)
+        for attempt in range(attempts):
+            try:
+                response = await self._get_client().get(
+                    "/api/users/me", headers={"Authorization": f"Bearer {token}"}
+                )
+            except httpx.HTTPError as error:
+                logger.opt(exception=error).warning(
+                    "用户中心请求失败 attempt={}/{}", attempt + 1, attempts
+                )
+                if attempt == attempts - 1:
+                    raise BizException(503, "用户中心不可用") from error
+            else:
+                if response.status_code < 500:
+                    return response
+                logger.warning(
+                    "用户中心返回 HTTP {} attempt={}/{}",
+                    response.status_code,
+                    attempt + 1,
+                    attempts,
+                )
+                if attempt == attempts - 1:
+                    raise BizException(503, "用户中心不可用")
+            await asyncio.sleep(RETRY_DELAYS[attempt])
+        raise AssertionError("unreachable")
+
     async def fetch_current_user(self, token: str) -> CurrentUser:
         key = hashlib.sha256(token.encode()).hexdigest()
         user = self._cached(key)
         if user is not None:
             return user
 
-        try:
-            response = await self._get_client().get(
-                "/api/users/me", headers={"Authorization": f"Bearer {token}"}
-            )
-        except httpx.HTTPError as error:
-            logger.opt(exception=error).warning("用户中心请求失败")
-            raise BizException(503, "用户中心不可用") from error
-
-        if response.status_code >= 500:
-            logger.warning("用户中心返回 HTTP {}", response.status_code)
-            raise BizException(503, "用户中心不可用")
+        response = await self._request_with_retry(token)
         try:
             body = response.json()
         except ValueError:

app/config.py

@@ -18,8 +18,16 @@ class Settings:
     llm_base_url: str | None = field(
         default_factory=lambda: os.getenv("LLM_BASE_URL") or None
     )
-    llm_timeout: float = 60.0
+    # 统计 5000 多次调用：正常的都在 30 秒内（含上千 token 的长输出），
+    # 卡住的请求会一直等到超时才重试，超时越长，卡一次多等越久
+    llm_timeout: float = field(
+        default_factory=lambda: float(os.getenv("LLM_TIMEOUT", "30"))
+    )
     llm_max_retries: int = 2
+    # 推理 token 占了单次调用耗时的大头；步骤都很简单，不需要深想
+    llm_reasoning_effort: str | None = field(
+        default_factory=lambda: os.getenv("LLM_REASONING_EFFORT", "low") or None
+    )
 
     # Jev
     typesafe_api_key: str = field(

app/resources/materials/bar-line-chart.json

@@ -140,6 +140,20 @@
             "横轴文字颜色"
           ],
           "panel": false
+        },
+        {
+          "path": "props.option.xAxis.axisLabel.fontSize",
+          "label": "X轴字号",
+          "description": "横轴类目文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "横轴文字大小"
+          ],
+          "panel": false
         }
       ]
     },

app/resources/materials/field_groups.json

@@ -176,6 +176,21 @@
           "图例文字颜色"
         ],
         "panel": false
+      },
+      {
+        "path": "props.option.legend.textStyle.fontSize",
+        "label": "图例字号",
+        "description": "图例中系列名称文字的大小",
+        "value_type": "number",
+        "minimum": 8,
+        "maximum": 48,
+        "unit": "px",
+        "default": 12,
+        "aliases": [
+          "图例大小",
+          "图例文字大小"
+        ],
+        "panel": false
       }
     ]
   },
@@ -238,6 +253,21 @@
         ],
         "panel": false
       },
+      {
+        "path": "props.option.xAxis.axisLabel.fontSize",
+        "label": "X轴字号",
+        "description": "横轴刻度文字的大小",
+        "value_type": "number",
+        "minimum": 8,
+        "maximum": 48,
+        "unit": "px",
+        "default": 12,
+        "aliases": [
+          "横轴文字大小",
+          "X轴标签大小"
+        ],
+        "panel": false
+      },
       {
         "path": "props.option.xAxis.axisLine.lineStyle.color",
         "label": "X轴线颜色",
@@ -260,6 +290,21 @@
         ],
         "panel": false
       },
+      {
+        "path": "props.option.yAxis.axisLabel.fontSize",
+        "label": "Y轴字号",
+        "description": "纵轴刻度文字的大小",
+        "value_type": "number",
+        "minimum": 8,
+        "maximum": 48,
+        "unit": "px",
+        "default": 12,
+        "aliases": [
+          "纵轴文字大小",
+          "Y轴标签大小"
+        ],
+        "panel": false
+      },
       {
         "path": "props.option.yAxis.splitLine.lineStyle.color",
         "label": "网格线颜色",
@@ -507,6 +552,20 @@
           "标签颜色"
         ],
         "panel": false
+      },
+      {
+        "path": "props.option.series.0.label.fontSize",
+        "label": "标签字号",
+        "description": "数据项名称标签的文字大小",
+        "value_type": "number",
+        "minimum": 8,
+        "maximum": 48,
+        "unit": "px",
+        "default": 12,
+        "aliases": [
+          "标签大小"
+        ],
+        "panel": false
       }
     ]
   },

app/resources/materials/gauge-chart.json

@@ -54,6 +54,20 @@
           ],
           "panel": false
         },
+        {
+          "path": "props.option.series.0.axisLabel.fontSize",
+          "label": "刻度字号",
+          "description": "表盘刻度数字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "刻度大小"
+          ],
+          "panel": false
+        },
         {
           "path": "props.option.series.0.axisLine.lineStyle.width",
           "label": "表盘宽度",

app/resources/materials/hbar-chart.json

@@ -38,6 +38,21 @@
           ],
           "panel": false
         },
+        {
+          "path": "props.option.xAxis.axisLabel.fontSize",
+          "label": "X轴字号",
+          "description": "横轴（数值）刻度文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "横轴文字大小",
+            "数值轴文字大小"
+          ],
+          "panel": false
+        },
         {
           "path": "props.option.xAxis.splitLine.lineStyle.color",
           "label": "网格线颜色",
@@ -60,6 +75,21 @@
           ],
           "panel": false
         },
+        {
+          "path": "props.option.yAxis.axisLabel.fontSize",
+          "label": "Y轴字号",
+          "description": "纵轴类目名称文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "纵轴文字大小",
+            "类目文字大小"
+          ],
+          "panel": false
+        },
         {
           "path": "props.option.yAxis.axisLine.lineStyle.color",
           "label": "Y轴线颜色",

app/resources/materials/heatmap-chart.json

@@ -42,6 +42,20 @@
           ],
           "panel": false
         },
+        {
+          "path": "props.option.xAxis.axisLabel.fontSize",
+          "label": "X轴字号",
+          "description": "横轴类目文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "横轴文字大小"
+          ],
+          "panel": false
+        },
         {
           "path": "props.option.yAxis.axisLabel.color",
           "label": "Y轴文字色",
@@ -51,6 +65,20 @@
             "纵轴文字颜色"
           ],
           "panel": false
+        },
+        {
+          "path": "props.option.yAxis.axisLabel.fontSize",
+          "label": "Y轴字号",
+          "description": "纵轴类目文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "纵轴文字大小"
+          ],
+          "panel": false
         }
       ]
     },
@@ -134,6 +162,19 @@
             "标签颜色"
           ],
           "panel": false
+        },
+        {
+          "path": "props.option.series.0.label.fontSize",
+          "label": "数值字号",
+          "description": "格子内数值文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "aliases": [
+            "标签大小"
+          ],
+          "panel": false
         }
       ]
     },

app/resources/materials/radar-chart.json

@@ -99,6 +99,21 @@
             "指标文字颜色"
           ],
           "panel": false
+        },
+        {
+          "path": "props.option.radar.axisName.fontSize",
+          "label": "维度字号",
+          "description": "维度名称文字的大小",
+          "value_type": "number",
+          "minimum": 8,
+          "maximum": 48,
+          "unit": "px",
+          "default": 12,
+          "aliases": [
+            "维度大小",
+            "指标文字大小"
+          ],
+          "panel": false
         }
       ]
     },

app/schemas/actions/__init__.py

@@ -7,6 +7,7 @@ from pydantic import Field
 from .add import AddAction
 from .base import ActionModel, BaseAction
 from .delete import DeleteAction
+from .layout import AlignAction, ArrangeAction, DistributeAction, SetLayoutAction
 from .move import MoveAction
 from .resize import ResizeAction
 from .update import UpdateAction
@@ -23,8 +24,29 @@ Action = Annotated[
     Field(discriminator="type"),
 ]
 
+# 模型可以提交的动作：前端协议 + 布局意图
+# 布局意图由后端展开成 move 和 resize，不会返回给前端
+AgentAction = Annotated[
+    AddAction
+    | DeleteAction
+    | MoveAction
+    | ResizeAction
+    | UpdateAction
+    | UpdateCanvasAction
+    | ArrangeAction
+    | AlignAction
+    | DistributeAction
+    | SetLayoutAction,
+    Field(discriminator="type"),
+]
+
 __all__ = [
     "Action",
+    "AgentAction",
+    "AlignAction",
+    "ArrangeAction",
+    "DistributeAction",
+    "SetLayoutAction",
     "ActionModel",
     "AddAction",
     "BaseAction",

app/schemas/actions/layout.py

@@ -0,0 +1,118 @@
+"""布局意图：模型只说“怎么排”，坐标由后端算，展开成 move 和 resize 后才交给前端
+
+这些动作只存在于模型提交的这一步，不会出现在返回给前端的动作里，前端协议不变
+"""
+
+from typing import Annotated, Literal, Self
+
+from pydantic import Field, model_validator
+
+from app.schemas.screen import Number, PositiveNumber
+
+from .base import ActionModel, BaseAction
+
+NonNegativeNumber = Annotated[Number, Field(ge=0)]
+TargetIds = Annotated[
+    list[str],
+    Field(min_length=1, description="要排列的组件 ID，不能重复"),
+]
+
+
+class Area(ActionModel):
+    """画布上的一块矩形区域，坐标单位 px"""
+
+    x: Number = Field(description="左上角横坐标")
+    y: Number = Field(description="左上角纵坐标")
+    width: PositiveNumber
+    height: PositiveNumber
+
+
+class _Group(ActionModel):
+    target_ids: TargetIds
+
+    @model_validator(mode="after")
+    def unique_ids(self) -> Self:
+        if len(set(self.target_ids)) != len(self.target_ids):
+            raise ValueError("target_ids 不能重复")
+        return self
+
+
+class ArrangeAction(_Group):
+    """把一组组件平分一块区域：每个组件的位置和尺寸都由这里决定，彼此不重叠、不超出区域
+
+    用于“平分空间”“排成一行/一列”“两行两列铺满”等；按 target_ids 的顺序从左到右、从上到下放置
+    """
+
+    type: Literal["arrange"] = "arrange"
+    mode: Literal["row", "column", "grid"] = Field(
+        description="row：排成一行；column：排成一列；grid：按 columns 列排成网格"
+    )
+    columns: int | None = Field(
+        default=None, ge=1, description="mode=grid 时每行几个，其他模式不填"
+    )
+    area: Area | None = Field(
+        default=None, description="要铺满的区域，省略表示整个画布"
+    )
+    gap: NonNegativeNumber = Field(default=20, description="组件之间的间距，单位 px")
+    padding: NonNegativeNumber = Field(
+        default=0, description="区域四周留出的边距，单位 px"
+    )
+
+    @model_validator(mode="after")
+    def columns_match_mode(self) -> Self:
+        if (self.mode == "grid") != (self.columns is not None):
+            raise ValueError("mode=grid 时必须填写 columns，其他模式不填")
+        return self
+
+
+class AlignAction(_Group):
+    """按基准对齐，不改变尺寸；居中、靠左、靠右、顶部对齐等"""
+
+    type: Literal["align"] = "align"
+    to: Literal["canvas", "selection"] = Field(
+        default="canvas",
+        description="canvas：对齐到画布；selection：对齐到这些组件合起来的外框",
+    )
+    horizontal: Literal["left", "center", "right"] | None = Field(
+        default=None, description="水平方向的对齐方式，省略表示不调整水平位置"
+    )
+    vertical: Literal["top", "middle", "bottom"] | None = Field(
+        default=None, description="垂直方向的对齐方式，省略表示不调整垂直位置"
+    )
+
+    @model_validator(mode="after")
+    def require_direction(self) -> Self:
+        if self.horizontal is None and self.vertical is None:
+            raise ValueError("align 至少提供 horizontal 或 vertical")
+        return self
+
+
+class DistributeAction(_Group):
+    """沿一个方向等间距排开，不改变尺寸；按当前位置的先后顺序排列"""
+
+    type: Literal["distribute"] = "distribute"
+    axis: Literal["horizontal", "vertical"]
+    gap: NonNegativeNumber | None = Field(
+        default=None,
+        description="固定间距，单位 px，从区域起点（没有 area 时是最前一个组件的位置）依次排开；"
+        "省略表示把间距摊匀，首尾两个组件的外沿不动",
+    )
+    area: Area | None = Field(
+        default=None, description="在这块区域内排开，省略表示用这些组件合起来的外框"
+    )
+
+
+class SetLayoutAction(BaseAction):
+    """直接设置组件的绝对位置和尺寸，只写要改的项，其余保持不变；不需要自己换算位移"""
+
+    type: Literal["set_layout"] = "set_layout"
+    x: Number | None = Field(default=None, description="目标左上角横坐标")
+    y: Number | None = Field(default=None, description="目标左上角纵坐标")
+    width: PositiveNumber | None = Field(default=None, description="目标宽度")
+    height: PositiveNumber | None = Field(default=None, description="目标高度")
+
+    @model_validator(mode="after")
+    def require_field(self) -> Self:
+        if all(v is None for v in (self.x, self.y, self.width, self.height)):
+            raise ValueError("set_layout 至少提供 x、y、width、height 中的一项")
+        return self

app/schemas/actions/move.py

@@ -10,7 +10,7 @@ from .base import BaseAction
 
 
 class MoveAction(BaseAction):
-    """按相对位移移动组件。目标是绝对位置时，用目标坐标减去当前坐标，例如当前 x=100、目标 x=150 时 delta_x=50"""
+    """按相对位移移动组件，适合“往右挪一点”这类相对说法；目标位置是确定的用 set_layout，多个组件排列用 arrange、align、distribute，不要自己换算坐标"""
 
     type: Literal["move"] = "move"
     delta_x: Number = Field(