优化

backend/.env

@@ -2,7 +2,7 @@
 # CDSL_DEFAULT_PROVIDER=deepseek
 # CDSL_DEFAULT_MODEL=deepseek-v4-flash
 CDSL_DEFAULT_PROVIDER=openai
-CDSL_DEFAULT_MODEL=gpt-5.5
+CDSL_DEFAULT_MODEL=gpt-5.4-mini
 
 # DeepSeek. Fill in your own API key below.
 CDSL_LLM_BASE_URL=https://api.deepseek.com/v1
@@ -12,15 +12,15 @@ CDSL_LLM_TIMEOUT_S=90
 CDSL_DEEPSEEK_VISION_MODELS=deepseek-v4-flash-vision-exp
 
 # Final autonomous-task publication uses this independent vision reviewer.
-CDSL_REVIEW_PROVIDER=deepseek
-CDSL_REVIEW_MODEL=deepseek-v4-flash-vision-exp
+CDSL_REVIEW_PROVIDER=openai
+CDSL_REVIEW_MODEL=gpt-5.5
 
 # Optional OpenAI provider. Comma-separate enabled models; list vision models
 # separately so image attachments can be routed safely.
 CDSL_OPENAI_BASE_URL=https://api.vip1129.cc/v1
 CDSL_OPENAI_API_KEY=sk-6586c229d77de8c421ba98e7eb0d9c6bb10f08ebc796de946ed17cf8d0d7a229
-CDSL_OPENAI_MODELS=gpt-5.5,gpt-5.6-luna
-CDSL_OPENAI_VISION_MODELS=gpt-5.5,gpt-5.6-luna
+CDSL_OPENAI_MODELS=gpt-5.5,gpt-5.6-luna,gpt-5.4-mini
+CDSL_OPENAI_VISION_MODELS=gpt-5.5,gpt-5.6-luna,gpt-5.4-mini
 # Supported values are model- and endpoint-dependent: low, medium, high.
 # gpt-5.5 defaults to medium, but setting it explicitly keeps requests stable.
 CDSL_OPENAI_REASONING_EFFORT=medium

backend/app/main.py

@@ -156,10 +156,25 @@ async def read_task(task_id: str) -> JSONResponse:
     task["requirements_markdown"] = requirements or None
     completion_checklist = store.read_completion_checklist(task["task_id"])
     task["completion_checklist_markdown"] = completion_checklist or None
+    modeling_plan = store.read_modeling_plan(task["task_id"])
+    task["modeling_plan_markdown"] = modeling_plan or None
+    task["modeling_plan_review"] = store.read_modeling_plan_review(task["task_id"])
     task["agent_state"] = store.read_agent_state(task["task_id"])
     return JSONResponse(task)
 
 
+@app.delete("/v1/tasks/{task_id}")
+async def cancel_task(task_id: str) -> JSONResponse:
+    try:
+        safe_id = safe_task_id(task_id)
+        task = await agent.cancel(safe_id)
+    except ValueError as error:
+        raise HTTPException(status_code=400, detail=str(error)) from error
+    if task is None:
+        raise HTTPException(status_code=404, detail="Task not found")
+    return JSONResponse(task)
+
+
 @app.get("/v1/tasks/{task_id}/artifacts/{artifact_path:path}")
 async def read_artifact(task_id: str, artifact_path: str) -> StreamingResponse:
     from fastapi.responses import FileResponse

backend/app/services/agent_service.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 import asyncio
 import base64
-from collections.abc import AsyncIterator
+from collections.abc import AsyncIterator, Awaitable, Callable
 import json
 import secrets
 from pathlib import Path
@@ -17,7 +17,7 @@ from app.services.autonomous_cdsl_generation import AutonomousCdslGenerationRunn
 from app.services.library import CdslLibrary
 from app.services.review_renderer import renderer_status
 from app.services.sse import event
-from app.services.storage import WorkspaceStore
+from app.services.storage import WorkspaceStore, now_iso
 from app.settings import ProviderConfig, ProviderModel, Settings
 
 
@@ -25,6 +25,68 @@ def text_from_message(message: ChatMessage) -> str:
     return "\n".join(part.text or "" for part in message.parts if part.type == "text").strip()
 
 
+def _response_language(text: str) -> str:
+    cjk = sum(1 for char in text if "\u4e00" <= char <= "\u9fff")
+    latin = sum(1 for char in text if char.isascii() and char.isalpha())
+    return "Chinese" if cjk >= 2 and cjk >= latin * 0.15 else "English"
+
+
+_EVENT_LABELS = {
+    "requirements_document": "冻结需求", "completion_checklist": "完成清单", "completion_audit": "完成审计",
+    "modeling_plan": "建模计划", "modeling_plan_review": "计划独立复核",
+    "tool_call": "建模工具", "candidate_result": "候选构建", "candidate_review": "候选独立复核",
+    "geometry_diagnostic": "几何诊断", "geometry_conclusion": "几何结论", "step_review": "步骤审查",
+    "checkpoint": "构建检查点", "rollback": "回滚检查点", "final_review": "最终视觉复核", "task_terminal": "生成任务",
+}
+
+
+def _event_status(name: str, payload: dict[str, Any]) -> str:
+    if name == "task_terminal":
+        lifecycle = str(payload.get("lifecycle") or "")
+        if lifecycle == "failed":
+            return "error"
+        if lifecycle == "cancelled":
+            return "cancelled"
+        return "success"
+    review = payload.get("review") if isinstance(payload.get("review"), dict) else {}
+    if (name == "modeling_plan_review" and str(review.get("verdict") or "") == "revise") or (
+        name == "candidate_review" and str(review.get("verdict") or "") == "reject"
+    ) or (
+        name == "final_review" and str(review.get("verdict") or "") == "repair"
+    ):
+        return "error"
+    return str(payload.get("status") or "running")
+
+
+def _visible_progress(name: str, payload: dict[str, Any]) -> dict[str, Any]:
+    data = dict(payload)
+    data.update({"step": name, "label": _EVENT_LABELS.get(name, name), "status": _event_status(name, payload)})
+    return data
+
+
+def _append_text_part(parts: list[dict[str, Any]], text: str) -> None:
+    if not text:
+        return
+    if parts and parts[-1].get("type") == "text":
+        parts[-1]["text"] = str(parts[-1].get("text") or "") + text
+    else:
+        parts.append({"type": "text", "text": text})
+
+
+def _upsert_data_part(parts: list[dict[str, Any]], part: dict[str, Any]) -> None:
+    part_id = str(part.get("id") or "")
+    if part_id:
+        for index, existing in enumerate(parts):
+            if str(existing.get("id") or "") == part_id:
+                parts[index] = part
+                return
+    parts.append(part)
+
+
+class _StreamingUnsupported(RuntimeError):
+    pass
+
+
 def conversation_user_context(conversation: dict[str, Any]) -> list[dict[str, str]]:
     """Return durable user intent from the whole conversation.
 
@@ -131,6 +193,19 @@ class AgentService:
 
             self._autonomous_runs[task_id] = asyncio.create_task(consume(), name=f"resume-autonomous-cdsl-{task_id}")
 
+    async def cancel(self, task_id: str) -> dict[str, Any] | None:
+        task = self.store.read_task(task_id)
+        if task is None:
+            return None
+        running = self._autonomous_runs.pop(task_id, None)
+        if running and not running.done():
+            running.cancel()
+        if str(task.get("lifecycle") or "") == "running":
+            task = self.store.finish_generation(task_id, lifecycle="cancelled", failure={
+                "schema_version": "cad.autonomous-cancelled.v1", "stage": "cancelled", "message": "CAD generation was cancelled by the user.",
+            })
+        return task
+
     async def stream(
         self,
         messages: list[ChatMessage],
@@ -214,34 +289,67 @@ class AgentService:
             if isinstance(attachment, dict) and str(attachment.get("id") or "")
         ]
         self.store.start_generation(task_id, request=user_text)
+        yield event("progress", {
+            "taskId": task_id, "step": "task_started", "label": "Agent", "status": "running",
+            "message": "CAD 任务已启动。" if _response_language(user_text) == "Chinese" else "CAD task started.",
+        })
         queue: asyncio.Queue[tuple[str, dict[str, Any]] | None] = asyncio.Queue()
-        runner = AutonomousCdslGenerationRunner(self.settings, self.store, self._complete)
+        assistant_parts: list[dict[str, Any]] = []
+        sequence = 0
+
+        async def on_text_delta(text: str) -> None:
+            # Text is persisted and streamed through the same ordered queue as
+            # tool events, so a refresh produces the exact same transcript.
+            nonlocal sequence
+            sequence += 1
+            _append_text_part(assistant_parts, text)
+            await queue.put(("text_delta", {
+                "text": text, "taskId": task_id, "eventId": f"{task_id}_{sequence}_text_delta",
+                "sequence": sequence, "timestamp": now_iso(),
+            }))
+
+        runner = AutonomousCdslGenerationRunner(self.settings, self.store, self._complete, on_text_delta=on_text_delta)
         assistant_id = f"assistant_{secrets.token_hex(8)}"
 
         async def consume() -> None:
-            assistant_parts: list[dict[str, Any]] = []
+            nonlocal sequence
             terminal = ""
             try:
                 async for name, payload in runner.run(
                     task_id=task_id, request=user_text, conversation_id=conversation["conversation_id"], provider=provider,
                     model=model, initial_messages=initial_messages, frozen_attachment_ids=frozen_attachment_ids, already_started=True,
                 ):
+                    sequence += 1
+                    decorated = dict(payload)
+                    decorated.setdefault("taskId", task_id)
+                    decorated.setdefault("eventId", f"{task_id}_{sequence}_{name}")
+                    decorated.update({
+                        "sequence": sequence,
+                        "timestamp": now_iso(),
+                    })
                     if name == "cad_result":
-                        assistant_parts.append({"type": "data-cad-result", "data": payload})
+                        _upsert_data_part(assistant_parts, {"type": "data-cad-result", "id": decorated["eventId"], "data": decorated})
                     elif name == "agent_thinking":
                         visible = str(payload.get("message") or "")
                         if visible:
-                            assistant_parts.append({"type": "text", "text": visible})
+                            # Streaming completions already delivered this
+                            # content through on_text_delta; only persist the
+                            # full response for the compatibility path.
+                            if not assistant_parts or assistant_parts[-1].get("type") != "text" or visible not in str(assistant_parts[-1].get("text") or ""):
+                                _append_text_part(assistant_parts, visible + "\n\n")
                     elif name == "task_terminal":
                         terminal = str(payload.get("lifecycle") or "")
                         if terminal == "failed":
-                            assistant_parts.append({"type": "data-cad-error", "data": {"stage": "generation", "message": str(payload.get("message") or "CAD 自主生成失败。")}})
-                    await queue.put((name, payload))
+                            _upsert_data_part(assistant_parts, {"type": "data-cad-error", "id": decorated["eventId"], "data": {"stage": "generation", "message": str(payload.get("message") or "CAD 自主生成失败。")}})
+                    elif name != "text_delta":
+                        _upsert_data_part(assistant_parts, {"type": "data-cad-progress", "id": decorated["eventId"], "data": _visible_progress(name, decorated)})
+                    await queue.put((name, decorated))
             except Exception as error:
                 self.store.finish_generation(task_id, lifecycle="failed", failure={"schema_version": "cad.autonomous-failure.v1", "stage": "worker", "message": str(error)})
                 terminal = "failed"
                 payload = {"taskId": task_id, "lifecycle": "failed", "message": str(error)}
-                assistant_parts.append({"type": "data-cad-error", "data": {"stage": "generation", "message": str(error)}})
+                error_id = f"{task_id}_{sequence + 1}_cad_error"
+                assistant_parts.append({"type": "data-cad-error", "id": error_id, "data": {"stage": "generation", "message": str(error)}})
                 await queue.put(("task_terminal", payload))
             finally:
                 if terminal == "completed" and not assistant_parts:
@@ -252,14 +360,20 @@ class AgentService:
 
         self._autonomous_runs[task_id] = asyncio.create_task(consume(), name=f"autonomous-cdsl-{task_id}")
         while True:
-            item = await queue.get()
+            try:
+                item = await asyncio.wait_for(queue.get(), timeout=15)
+            except asyncio.TimeoutError:
+                yield event("heartbeat", {"taskId": task_id, "timestamp": now_iso()})
+                continue
             if item is None:
                 break
             name, payload = item
             if name == "task_terminal" and str(payload.get("lifecycle") or "") == "failed":
                 yield event("cad_error", {"stage": "generation", "message": str(payload.get("message") or "CAD 自主生成失败。")})
             elif name == "agent_thinking":
-                yield event("text_delta", {"text": str(payload.get("message") or "")})
+                message = str(payload.get("message") or "")
+                if message:
+                    yield event("text_delta", {"text": message + "\n\n"})
             else:
                 yield event(name, payload)
         yield event("done", {})
@@ -278,6 +392,94 @@ class AgentService:
         provider: ProviderConfig,
         model: ProviderModel,
         required_tool_name: str | None = None,
+        *,
+        on_text_delta: Callable[[str], Awaitable[None]] | None = None,
+    ) -> dict[str, Any]:
+        if on_text_delta is None:
+            return await self._complete_once(messages, tools, provider, model, required_tool_name)
+        try:
+            return await self._complete_stream(messages, tools, provider, model, required_tool_name, on_text_delta)
+        except _StreamingUnsupported:
+            await on_text_delta("当前模型不支持工具流式，已切换为兼容模式。\n\n")
+            response = await self._complete_once(messages, tools, provider, model, required_tool_name)
+            content = str((((response.get("choices") or [{}])[0] or {}).get("message") or {}).get("content") or "")
+            if content:
+                await on_text_delta(content + "\n\n")
+            # Prevent the runner from emitting this same full response again.
+            choice = ((response.get("choices") or [{}])[0] or {}).get("message") or {}
+            return {"choices": [{"message": {**choice, "content": ""}}]}
+
+    async def _complete_stream(
+        self,
+        messages: list[dict[str, Any]],
+        tools: list[dict[str, Any]],
+        provider: ProviderConfig,
+        model: ProviderModel,
+        required_tool_name: str | None,
+        on_text_delta: Callable[[str], Awaitable[None]],
+    ) -> dict[str, Any]:
+        tool_choice: str | dict[str, Any] = "auto"
+        if required_tool_name:
+            tool_choice = {"type": "function", "function": {"name": required_tool_name}}
+        payload: dict[str, Any] = {
+            "model": model.id, "messages": messages, "tools": tools,
+            "tool_choice": tool_choice, "temperature": 0.1, "stream": True,
+        }
+        payload.update(provider.chat_completion_options)
+        headers = {"Authorization": f"Bearer {provider.api_key}", "Content-Type": "application/json"}
+        try:
+            async with httpx.AsyncClient(timeout=self.settings.llm_timeout_s) as client:
+                async with client.stream("POST", f"{provider.base_url}/chat/completions", headers=headers, json=payload) as response:
+                    if response.status_code in {400, 404, 405, 415, 422}:
+                        detail = (await response.aread()).decode(errors="replace")[:400]
+                        raise _StreamingUnsupported(detail)
+                    if response.status_code >= 400:
+                        raise RuntimeError(f"LLM request failed ({response.status_code}): {(await response.aread()).decode(errors='replace')[:800]}")
+                    if "text/event-stream" not in str(response.headers.get("content-type") or ""):
+                        raise _StreamingUnsupported("provider returned a non-stream response")
+                    tool_calls: dict[int, dict[str, Any]] = {}
+                    async for line in response.aiter_lines():
+                        if not line.startswith("data:"):
+                            continue
+                        raw = line[5:].strip()
+                        if raw == "[DONE]":
+                            break
+                        try:
+                            chunk = json.loads(raw)
+                        except json.JSONDecodeError:
+                            continue
+                        choices = chunk.get("choices") if isinstance(chunk, dict) else None
+                        delta = choices[0].get("delta") if isinstance(choices, list) and choices and isinstance(choices[0], dict) else {}
+                        if not isinstance(delta, dict):
+                            continue
+                        text = str(delta.get("content") or delta.get("reasoning_content") or "")
+                        if text:
+                            await on_text_delta(text)
+                        for call in delta.get("tool_calls") or []:
+                            if not isinstance(call, dict):
+                                continue
+                            index = int(call.get("index") or 0)
+                            current = tool_calls.setdefault(index, {"id": str(call.get("id") or f"call_{index}"), "type": "function", "function": {"name": "", "arguments": ""}})
+                            if call.get("id"):
+                                current["id"] = str(call["id"])
+                            function = call.get("function") if isinstance(call.get("function"), dict) else {}
+                            if function.get("name"):
+                                current["function"]["name"] += str(function["name"])
+                            if function.get("arguments"):
+                                current["function"]["arguments"] += str(function["arguments"])
+        except _StreamingUnsupported:
+            raise
+        except (httpx.HTTPError, asyncio.TimeoutError) as error:
+            raise RuntimeError(f"LLM streaming connection failed: {error}") from error
+        return {"choices": [{"message": {"content": "", "tool_calls": [tool_calls[key] for key in sorted(tool_calls)]}}]}
+
+    async def _complete_once(
+        self,
+        messages: list[dict[str, Any]],
+        tools: list[dict[str, Any]],
+        provider: ProviderConfig,
+        model: ProviderModel,
+        required_tool_name: str | None = None,
     ) -> dict[str, Any]:
         tool_choice: str | dict[str, Any] = "auto"
         if required_tool_name:

backend/app/services/cdsl_authoring_schema.py

@@ -0,0 +1,403 @@
+from __future__ import annotations
+
+import hashlib
+import json
+from copy import deepcopy
+from typing import Any
+
+from jsonschema import Draft202012Validator
+
+from app.services.engine_service import feature_atomic_contract
+
+
+class CanonicalFragmentError(ValueError):
+    def __init__(self, message: str, *, path: str = "fragment", code: str = "CDSL_SCHEMA_INVALID") -> None:
+        super().__init__(message)
+        self.path = path
+        self.code = code
+
+
+def _point(size: int) -> dict[str, Any]:
+    return {
+        "type": "array",
+        "items": {"type": "number"},
+        "minItems": size,
+        "maxItems": size,
+    }
+
+
+def _workplane_schema() -> dict[str, Any]:
+    point3 = _point(3)
+    return {
+        "type": "object",
+        "properties": {
+            "origin_mm": deepcopy(point3),
+            "x_dir": deepcopy(point3),
+            "normal": deepcopy(point3),
+        },
+        "required": ["origin_mm", "x_dir", "normal"],
+        "additionalProperties": False,
+    }
+
+
+def _analytic_segment_schema() -> dict[str, Any]:
+    point2 = _point(2)
+    return {
+        "oneOf": [
+            {
+                "type": "object",
+                "properties": {
+                    "type": {"const": "line"},
+                    "start": deepcopy(point2),
+                    "end": deepcopy(point2),
+                },
+                "required": ["type", "start", "end"],
+                "additionalProperties": False,
+            },
+            {
+                "type": "object",
+                "properties": {
+                    "type": {"const": "arc"},
+                    "start": deepcopy(point2),
+                    "end": deepcopy(point2),
+                    "center": deepcopy(point2),
+                    "radius_mm": {"type": "number", "exclusiveMinimum": 0},
+                    "clockwise": {"type": "boolean"},
+                },
+                "required": ["type", "start", "end", "center", "radius_mm"],
+                "additionalProperties": False,
+            },
+            {
+                "type": "object",
+                "properties": {
+                    "type": {"const": "circle"},
+                    "center": deepcopy(point2),
+                    "radius_mm": {"type": "number", "exclusiveMinimum": 0},
+                },
+                "required": ["type", "center", "radius_mm"],
+                "additionalProperties": False,
+            },
+        ]
+    }
+
+
+def canonical_profile_schema() -> dict[str, Any]:
+    point2 = _point(2)
+    segment = _analytic_segment_schema()
+    contour = {
+        "type": "object",
+        "properties": {
+            "role": {"enum": ["outer", "inner"]},
+            "closed": {"const": True},
+            "segments": {"type": "array", "minItems": 1, "items": segment},
+        },
+        "required": ["role", "closed", "segments"],
+        "additionalProperties": False,
+    }
+    return {
+        "oneOf": [
+            {
+                "type": "object",
+                "properties": {
+                    "type": {"const": "circle"},
+                    "center": deepcopy(point2),
+                    "radius_mm": {"type": "number", "exclusiveMinimum": 0},
+                },
+                "required": ["type", "radius_mm"],
+                "additionalProperties": False,
+            },
+            {
+                "type": "object",
+                "properties": {
+                    "type": {"const": "polygon"},
+                    "vertices": {"type": "array", "minItems": 3, "items": deepcopy(point2)},
+                },
+                "required": ["type", "vertices"],
+                "additionalProperties": False,
+            },
+            {
+                "type": "object",
+                "properties": {
+                    "type": {"const": "analytic_contours"},
+                    "contours": {"type": "array", "minItems": 1, "maxItems": 2, "items": contour},
+                },
+                "required": ["type", "contours"],
+                "additionalProperties": False,
+            },
+        ]
+    }
+
+
+def _end_condition_schema() -> dict[str, Any]:
+    return {
+        "type": "object",
+        "properties": {
+            "type": {"type": "string", "minLength": 1},
+            "solidworks_code": {"type": "integer"},
+        },
+        "required": ["type", "solidworks_code"],
+        "additionalProperties": False,
+    }
+
+
+def _axis_schema() -> dict[str, Any]:
+    point3 = _point(3)
+    return {
+        "type": "object",
+        "properties": {"origin_mm": deepcopy(point3), "direction": deepcopy(point3)},
+        "required": ["origin_mm", "direction"],
+        "additionalProperties": False,
+    }
+
+
+def _hole_positions_schema() -> dict[str, Any]:
+    return {
+        "type": "array",
+        "minItems": 1,
+        "items": {
+            "type": "object",
+            "properties": {"mm": _point(3)},
+            "required": ["mm"],
+            "additionalProperties": False,
+        },
+    }
+
+
+def _parameter_schema(atomic_id: str, contract: dict[str, Any]) -> dict[str, Any]:
+    positive = {"type": "number", "exclusiveMinimum": 0}
+    number = {"type": "number"}
+    integer = {"type": "integer", "minimum": 1}
+    point3 = _point(3)
+    properties: dict[str, Any] = {}
+    required = [name for name in contract["required_params"] if name not in {"host_face", "source_feature_ids", "mirror_plane"}]
+
+    if atomic_id.startswith("extrude_"):
+        properties = {
+            "distance_mm": deepcopy(number),
+            "reverse_distance_mm": deepcopy(number),
+            "reverse": {"type": "boolean"},
+            "end_condition": _end_condition_schema(),
+            "reverse_end_condition": _end_condition_schema(),
+        }
+    elif atomic_id.startswith("revolve_"):
+        properties = {
+            "angle_deg": {"type": "number", "exclusiveMinimum": 0, "maximum": 360},
+            "axis": _axis_schema(),
+            "reverse": {"type": "boolean"},
+        }
+    elif atomic_id.startswith("hole_"):
+        properties = {
+            "diameter_mm": deepcopy(positive),
+            "depth_mm": deepcopy(positive),
+            "positions": _hole_positions_schema(),
+            "drill_angle_rad": {"type": "number", "exclusiveMinimum": 0, "maximum": 3.141592653589793},
+            "countersink_diameter_mm": deepcopy(positive),
+            "countersink_angle_rad": {"type": "number", "exclusiveMinimum": 0, "maximum": 3.141592653589793},
+            "counterbore_diameter_mm": deepcopy(positive),
+            "counterbore_depth_mm": deepcopy(positive),
+        }
+    elif atomic_id == "sphere_add":
+        properties = {"radius_mm": deepcopy(positive), "center_mm": deepcopy(point3)}
+    elif atomic_id == "fillet":
+        properties = {"radius_mm": deepcopy(positive), "tangent_propagation": {"type": "boolean"}}
+    elif atomic_id == "chamfer":
+        properties = {
+            "distance_mm": deepcopy(positive),
+            "distance_2_mm": deepcopy(positive),
+            "angle_rad": {"type": "number", "exclusiveMinimum": 0, "maximum": 3.141592653589793},
+        }
+    elif atomic_id == "pattern_linear":
+        properties = {
+            "direction_1": deepcopy(point3),
+            "spacing_1_mm": deepcopy(positive),
+            "pattern_count_1": deepcopy(integer),
+            "direction_2": deepcopy(point3),
+            "spacing_2_mm": deepcopy(positive),
+            "pattern_count_2": deepcopy(integer),
+        }
+    elif atomic_id == "pattern_mirror":
+        properties = {}
+    elif atomic_id == "reference_axis":
+        properties = {"axis": _axis_schema()}
+    elif atomic_id == "reference_plane":
+        properties = {"plane": _workplane_schema()}
+    elif atomic_id == "hole_wizard":
+        required = ["hole_type", "diameter_mm", "depth_mm"]
+        properties = {
+            "hole_type": {"type": "string", "minLength": 1},
+            "diameter_mm": deepcopy(positive),
+            "depth_mm": deepcopy(positive),
+            "positions": _hole_positions_schema(),
+            "thread": {"type": "object"},
+            "countersink": {"type": "object"},
+            "counterbore": {"type": "object"},
+        }
+    else:
+        for name in [*contract["required_params"], *contract["optional_params"]]:
+            if name not in {"host_face", "source_feature_ids", "mirror_plane"}:
+                properties[name] = {}
+
+    allowed = set(required) | {
+        name for name in contract["optional_params"]
+        if name not in {"host_face", "source_feature_ids", "mirror_plane"}
+    }
+    properties = {name: value for name, value in properties.items() if name in allowed}
+    return {
+        "type": "object",
+        "properties": properties,
+        "required": required,
+        "additionalProperties": False,
+    }
+
+
+def _selector_limits(atomic_id: str, contract: dict[str, Any]) -> tuple[int, int] | None:
+    if atomic_id.startswith("hole_") or atomic_id == "hole_wizard":
+        return 1, 1
+    slot = contract.get("selector_slot")
+    if not isinstance(slot, dict):
+        return None
+    return int(slot.get("min_items") or 1), int(slot.get("max_items") or 1)
+
+
+def build_operation_fragment_schema(
+    engine: Any,
+    atomic_id: str,
+    *,
+    correction: dict[str, Any] | None = None,
+    allow_multi_feature: bool = False,
+) -> dict[str, Any]:
+    del correction
+    if allow_multi_feature:
+        raise ValueError("Canonical autonomous authoring currently permits exactly one feature")
+    contract = feature_atomic_contract(engine, atomic_id)
+    feature_properties: dict[str, Any] = {
+        "atomic_id": {"const": atomic_id},
+        "params": _parameter_schema(atomic_id, contract),
+    }
+    feature_required = ["atomic_id", "params"]
+    selector_limits = _selector_limits(atomic_id, contract)
+    if selector_limits is not None:
+        minimum, maximum = selector_limits
+        feature_properties["selector_tokens"] = {
+            "type": "array",
+            "items": {"type": "string", "minLength": 1},
+            "minItems": minimum,
+            "maxItems": maximum,
+            "uniqueItems": True,
+        }
+        feature_required.append("selector_tokens")
+    feature_schema = {
+        "type": "object",
+        "properties": feature_properties,
+        "required": feature_required,
+        "additionalProperties": False,
+    }
+    properties: dict[str, Any] = {"feature": feature_schema}
+    required = ["feature"]
+    if contract["requires_sketch"]:
+        properties["sketch"] = {
+            "type": "object",
+            "properties": {"workplane": _workplane_schema(), "profile": canonical_profile_schema()},
+            "required": ["workplane", "profile"],
+            "additionalProperties": False,
+        }
+        required.insert(0, "sketch")
+    return {
+        "type": "object",
+        "properties": properties,
+        "required": required,
+        "additionalProperties": False,
+    }
+
+
+def canonical_fragment_example(engine: Any, atomic_id: str) -> dict[str, Any]:
+    contract = feature_atomic_contract(engine, atomic_id)
+    feature: dict[str, Any] = {"atomic_id": atomic_id, "params": {}}
+    params = feature["params"]
+    if atomic_id.startswith("extrude_"):
+        params["distance_mm"] = 10
+        if "reverse_distance_mm" in contract["required_params"]:
+            params["reverse_distance_mm"] = 5
+    elif atomic_id.startswith("revolve_"):
+        params.update({"angle_deg": 360, "axis": {"origin_mm": [0, 0, 0], "direction": [0, 0, 1]}})
+    elif atomic_id.startswith("hole_"):
+        params.update({"diameter_mm": 10, "depth_mm": 20, "positions": [{"mm": [0, 0, 0]}]})
+        if atomic_id == "hole_countersink":
+            params.update({"countersink_diameter_mm": 16, "countersink_angle_rad": 1.5707963267948966})
+        if atomic_id == "hole_counterbore":
+            params.update({"counterbore_diameter_mm": 16, "counterbore_depth_mm": 4})
+        feature["selector_tokens"] = ["face-token-from-current-topology"]
+    elif atomic_id == "hole_wizard":
+        params.update({"hole_type": "simple", "diameter_mm": 10, "depth_mm": 20})
+        feature["selector_tokens"] = ["face-token-from-current-topology"]
+    elif atomic_id == "sphere_add":
+        params.update({"radius_mm": 10, "center_mm": [0, 0, 0]})
+    elif atomic_id == "fillet":
+        params["radius_mm"] = 0.5
+        feature["selector_tokens"] = ["edge-token-from-current-topology"]
+    elif atomic_id == "chamfer":
+        params["distance_mm"] = 0.5
+        feature["selector_tokens"] = ["edge-token-from-current-topology"]
+    elif atomic_id == "pattern_linear":
+        params.update({"direction_1": [1, 0, 0], "spacing_1_mm": 10, "pattern_count_1": 2})
+    elif atomic_id == "pattern_mirror":
+        feature["selector_tokens"] = ["plane-token-from-current-topology"]
+    elif atomic_id == "reference_axis":
+        params["axis"] = {"origin_mm": [0, 0, 0], "direction": [0, 0, 1]}
+    elif atomic_id == "reference_plane":
+        params["plane"] = {"origin_mm": [0, 0, 0], "x_dir": [1, 0, 0], "normal": [0, 0, 1]}
+
+    fragment: dict[str, Any] = {"feature": feature}
+    if contract["requires_sketch"]:
+        fragment["sketch"] = {
+            "workplane": {"origin_mm": [0, 0, 0], "x_dir": [1, 0, 0], "normal": [0, 0, 1]},
+            "profile": {"type": "polygon", "vertices": [[-10, -5], [10, -5], [10, 5], [-10, 5]]},
+        }
+        fragment = {"sketch": fragment["sketch"], "feature": feature}
+    return fragment
+
+
+def operation_contract_hash(atomic_id: str, schema: dict[str, Any]) -> str:
+    encoded = json.dumps({"atomic_id": atomic_id, "schema": schema}, sort_keys=True, separators=(",", ":"))
+    return hashlib.sha256(encoded.encode("utf-8")).hexdigest()
+
+
+def validate_canonical_fragment(engine: Any, fragment: dict[str, Any], *, expected_atomic_id: str = "") -> str:
+    feature = fragment.get("feature") if isinstance(fragment, dict) else None
+    atomic_id = str((feature or {}).get("atomic_id") or "") if isinstance(feature, dict) else ""
+    if expected_atomic_id and atomic_id and atomic_id != expected_atomic_id:
+        raise CanonicalFragmentError(
+            f"OPERATION_CONTRACT_MISMATCH: expected {expected_atomic_id}, received {atomic_id}",
+            path="fragment.feature.atomic_id",
+            code="OPERATION_CONTRACT_MISMATCH",
+        )
+    if not atomic_id:
+        raise CanonicalFragmentError(
+            "CDSL_SCHEMA_INVALID: canonical fragment requires fragment.feature.atomic_id",
+            path="fragment.feature.atomic_id",
+        )
+    schema = build_operation_fragment_schema(engine, atomic_id)
+    errors = sorted(Draft202012Validator(schema).iter_errors(fragment), key=lambda error: (list(error.absolute_path), error.message))
+    if errors:
+        error = errors[0]
+        path = "fragment" + "".join(
+            f"[{item}]" if isinstance(item, int) else f".{item}"
+            for item in error.absolute_path
+        )
+        raise CanonicalFragmentError(f"CDSL_SCHEMA_INVALID at {path}: {error.message}", path=path)
+    profile = ((fragment.get("sketch") or {}).get("profile") or {}) if isinstance(fragment, dict) else {}
+    if isinstance(profile, dict) and profile.get("type") == "analytic_contours":
+        roles = [str(item.get("role") or "") for item in profile.get("contours") or () if isinstance(item, dict)]
+        if roles.count("outer") != 1 or roles.count("inner") > 1:
+            raise CanonicalFragmentError(
+                "CDSL_PROFILE_MULTIPLE_OUTERS: analytic_contours requires exactly one outer contour and at most one inner contour",
+                path="fragment.sketch.profile.contours",
+                code="CDSL_PROFILE_MULTIPLE_OUTERS",
+            )
+        if roles.count("outer") == 0 and roles.count("inner"):
+            raise CanonicalFragmentError(
+                "CDSL_PROFILE_INNER_WITHOUT_OUTER: analytic_contours cannot contain an inner contour without an outer contour",
+                path="fragment.sketch.profile.contours",
+                code="CDSL_PROFILE_INNER_WITHOUT_OUTER",
+            )
+    return atomic_id

backend/app/services/cdsl_fragment.py

@@ -5,6 +5,7 @@ from __future__ import annotations
 from copy import deepcopy
 from hashlib import sha256
 import json
+import math
 from typing import Any
 
 
@@ -231,12 +232,15 @@ def _normalize_axis_mapping(axis: dict[str, Any], *, location: str, fixes: list[
 
 
 def _lift_feature_local_sketches(fragment: dict[str, Any], *, fixes: list[dict[str, str]]) -> None:
-    """Accept the common one-feature/one-sketch nesting without choosing geometry.
+    """Accept common feature-local sketch spellings without choosing geometry.
 
     The public fragment grammar owns one ordered sketch list and one ordered
-    feature list. Some tool-call models naturally nest each sketch below its
-    feature. That representation is losslessly transformable only when every
-    feature supplies exactly one sketch and no root sketch collection exists.
+    feature list. Tool-call models commonly emit either a direct feature with
+    a local ``sketch`` or a wrapper shaped as ``{sketch, feature}``. Both are
+    losslessly transformable when the fragment has no root sketch collection.
+    Sketchless features such as ``sphere_add`` and ``chamfer`` may be mixed in
+    the same batch; the materializer pairs only sketch-requiring features with
+    the lifted sketches.
     """
     if any(key in fragment for key in ("sketch", "sketches", "add_sketches")):
         return
@@ -244,21 +248,225 @@ def _lift_feature_local_sketches(fragment: dict[str, Any], *, fixes: list[dict[s
     if not isinstance(features, list) or not features or not all(isinstance(item, dict) for item in features):
         return
     lifted: list[dict[str, Any]] = []
-    for index, feature in enumerate(features):
-        nested = feature.get("sketches", feature.get("sketch"))
+    normalized_features: list[dict[str, Any]] = []
+    for index, item in enumerate(features):
+        wrapped = item.get("feature")
+        if wrapped is not None:
+            if not isinstance(wrapped, dict):
+                return
+            feature = deepcopy(wrapped)
+            if "selector_tokens" in item:
+                if "selector_tokens" in feature:
+                    raise AutonomousFragmentError(
+                        f"features[{index}] supplies selector_tokens both on the wrapper and feature"
+                    )
+                feature["selector_tokens"] = deepcopy(item["selector_tokens"])
+            nested = item.get("sketches", item.get("sketch"))
+            fixes.append({"path": f"features[{index}]", "from": "{sketch,feature}", "to": "feature", "action": "unwrapped_equivalent"})
+        else:
+            feature = deepcopy(item)
+            nested = feature.get("sketches", feature.get("sketch"))
         if isinstance(nested, dict):
             sketches = [nested]
         elif isinstance(nested, list):
             sketches = nested
         else:
-            return
+            normalized_features.append(feature)
+            continue
         if len(sketches) != 1 or not isinstance(sketches[0], dict):
             return
         feature.pop("sketch", None)
         feature.pop("sketches", None)
         lifted.append(sketches[0])
+        normalized_features.append(feature)
         fixes.append({"path": f"features[{index}]", "from": "feature-local sketch", "to": "sketches[]", "action": "lifted_equivalent"})
-    fragment["sketches"] = lifted
+    fragment["features"] = normalized_features
+    if lifted:
+        fragment["sketches"] = lifted
+
+
+def _lift_param_embedded_sketches(fragment: dict[str, Any], *, fixes: list[dict[str, str]]) -> None:
+    """Lift an exact legacy ``params.workplane/profile`` sketch spelling.
+
+    Some authors place an extrusion's complete sketch inside its params object.
+    The workplane and profile retain their meaning verbatim, so extracting them
+    is safe. Partial shapes remain invalid instead of being guessed.
+    """
+    if any(key in fragment for key in ("sketch", "sketches", "add_sketches")):
+        return
+    features = fragment.get("features", fragment.get("add_features"))
+    if not isinstance(features, list) or not all(isinstance(item, dict) for item in features):
+        return
+    lifted: list[dict[str, Any]] = []
+    for index, feature in enumerate(features):
+        atomic_id = str(feature.get("atomic_id") or "")
+        params = feature.get("params")
+        if not atomic_id.startswith(("extrude_", "revolve_")) or not isinstance(params, dict):
+            continue
+        workplane = params.get("workplane")
+        profile = params.get("profile")
+        if workplane is None and profile is None:
+            continue
+        if not isinstance(workplane, dict) or not isinstance(profile, dict):
+            return
+        params.pop("workplane")
+        params.pop("profile")
+        lifted.append({"workplane": workplane, "profile": profile})
+        fixes.append({"path": f"features[{index}].params", "from": "workplane/profile", "to": "sketches[]", "action": "lifted_equivalent"})
+    if lifted:
+        fragment["sketches"] = lifted
+
+
+def _set_reverse_from_direction(params: dict[str, Any], *, reverse: bool, location: str, fixes: list[dict[str, str]]) -> None:
+    if "reverse" in params and params["reverse"] is not reverse:
+        raise AutonomousFragmentError(
+            f"CONFLICTING_PARAMETER_ALIASES at {location}: direction conflicts with reverse"
+        )
+    params["reverse"] = reverse
+    params.pop("direction", None)
+    fixes.append({"path": location, "from": "direction", "to": "reverse", "action": "normalized_equivalent"})
+
+
+def _normalize_extrude_direction(
+    params: dict[str, Any],
+    sketch: dict[str, Any] | None,
+    *,
+    location: str,
+    fixes: list[dict[str, str]],
+) -> None:
+    """Accept an extrusion direction only when it exactly restates the sketch."""
+    direction = params.get("direction")
+    if direction is None:
+        return
+    if isinstance(direction, str):
+        normalized = direction.strip().lower()
+        if normalized in {"negative", "reverse", "-normal"}:
+            _set_reverse_from_direction(params, reverse=True, location=location, fixes=fixes)
+        elif normalized in {"positive", "forward", "+normal"}:
+            _set_reverse_from_direction(params, reverse=False, location=location, fixes=fixes)
+        return
+    workplane = sketch.get("workplane") if isinstance(sketch, dict) else None
+    normal = workplane.get("normal") if isinstance(workplane, dict) else None
+    if (
+        not isinstance(direction, list)
+        or not isinstance(normal, list)
+        or len(direction) != 3
+        or len(normal) != 3
+        or not all(isinstance(value, (int, float)) and not isinstance(value, bool) for value in [*direction, *normal])
+    ):
+        return
+    direction_norm = math.sqrt(sum(float(value) ** 2 for value in direction))
+    normal_norm = math.sqrt(sum(float(value) ** 2 for value in normal))
+    if direction_norm == 0 or normal_norm == 0:
+        return
+    cosine = sum(float(direction[index]) * float(normal[index]) for index in range(3)) / (direction_norm * normal_norm)
+    if math.isclose(cosine, 1.0, abs_tol=1e-9):
+        params.pop("direction")
+        fixes.append({"path": location, "from": "direction", "to": "workplane.normal", "action": "deduplicated_equivalent"})
+    elif math.isclose(cosine, -1.0, abs_tol=1e-9):
+        _set_reverse_from_direction(params, reverse=True, location=location, fixes=fixes)
+
+
+def _normalize_angle_radians(params: dict[str, Any], *, location: str, fixes: list[dict[str, str]]) -> None:
+    """Convert the explicitly unit-labelled angle_rad alias to angle_deg."""
+    if "angle_rad" not in params:
+        return
+    radians = params["angle_rad"]
+    if not isinstance(radians, (int, float)) or isinstance(radians, bool) or not math.isfinite(float(radians)):
+        return
+    degrees = float(radians) * 180.0 / math.pi
+    if "angle_deg" in params:
+        supplied = params["angle_deg"]
+        if not isinstance(supplied, (int, float)) or isinstance(supplied, bool) or not math.isclose(float(supplied), degrees, rel_tol=0.0, abs_tol=1e-9):
+            raise AutonomousFragmentError(
+                f"CONFLICTING_PARAMETER_ALIASES at {location}: angle_rad conflicts with angle_deg"
+            )
+        params.pop("angle_rad")
+        fixes.append({"path": location, "from": "angle_rad", "to": "angle_deg", "action": "deduplicated_equivalent"})
+        return
+    params["angle_deg"] = degrees
+    params.pop("angle_rad")
+    fixes.append({"path": location, "from": "angle_rad", "to": "angle_deg", "action": "converted_unit"})
+
+
+def _normalize_concentric_circle_contours(profile: dict[str, Any], *, location: str, fixes: list[dict[str, str]]) -> None:
+    """Expand a common two-circle annulus shorthand into analytic contours."""
+    if profile.get("type") != "analytic_contours":
+        return
+    contours = profile.get("contours")
+    if not isinstance(contours, list) or len(contours) != 2 or not all(isinstance(item, dict) for item in contours):
+        return
+    if not all(item.get("type") == "circle" and isinstance(item.get("center"), list) and len(item["center"]) == 2 for item in contours):
+        return
+    if contours[0]["center"] != contours[1]["center"]:
+        return
+    try:
+        ordered = sorted(contours, key=lambda item: float(item["radius_mm"]), reverse=True)
+    except (KeyError, TypeError, ValueError):
+        return
+    if float(ordered[0]["radius_mm"]) <= float(ordered[1]["radius_mm"]):
+        return
+    profile["contours"] = [
+        {"role": role, "closed": True, "segments": [{"type": "circle", "center": item["center"], "radius_mm": item["radius_mm"]}]}
+        for role, item in zip(("outer", "inner"), ordered)
+    ]
+    fixes.append({"path": location, "from": "circle contour shorthand", "to": "analytic_contours.segments", "action": "expanded_equivalent"})
+
+
+def _finite_vector3(value: Any) -> tuple[float, float, float] | None:
+    """Return a finite numeric vector when the author supplied one."""
+    if (
+        not isinstance(value, list)
+        or len(value) != 3
+        or not all(isinstance(component, (int, float)) and not isinstance(component, bool) for component in value)
+    ):
+        return None
+    result = tuple(float(component) for component in value)
+    return result if all(math.isfinite(component) for component in result) else None
+
+
+def _validate_revolve_axis_in_sketch_plane(
+    atomic_id: str,
+    params: dict[str, Any],
+    sketch: dict[str, Any],
+) -> None:
+    """Reject a revolve axis that cannot be a construction line of its sketch.
+
+    A solid revolve is defined around an axis in the source sketch plane.
+    Letting an out-of-plane axis reach OCC can produce degenerate BReps that
+    fail much later during tessellation, so enforce this geometric invariant
+    before candidate staging. Malformed vectors are left to CDSL schema
+    validation, which can report their field-level shape.
+    """
+    axis = params.get("axis")
+    workplane = sketch.get("workplane") if isinstance(sketch.get("workplane"), dict) else None
+    if not isinstance(axis, dict) or not isinstance(workplane, dict):
+        return
+    axis_origin = _finite_vector3(axis.get("origin_mm"))
+    axis_direction = _finite_vector3(axis.get("direction"))
+    plane_origin = _finite_vector3(workplane.get("origin_mm"))
+    plane_normal = _finite_vector3(workplane.get("normal"))
+    if None in {axis_origin, axis_direction, plane_origin, plane_normal}:
+        return
+    assert axis_origin is not None and axis_direction is not None and plane_origin is not None and plane_normal is not None
+    direction_length = math.sqrt(sum(component * component for component in axis_direction))
+    normal_length = math.sqrt(sum(component * component for component in plane_normal))
+    if direction_length == 0 or normal_length == 0:
+        return
+    direction_normal_dot = abs(sum(axis_direction[index] * plane_normal[index] for index in range(3)) / (direction_length * normal_length))
+    if direction_normal_dot > 1e-7:
+        raise AutonomousFragmentError(
+            "REVOLVE_AXIS_NOT_IN_SKETCH_PLANE: "
+            f"{atomic_id} params.axis.direction must be parallel to sketch.workplane; "
+            f"abs(dot(axis_direction, plane_normal))={direction_normal_dot:.3g}"
+        )
+    origin_plane_offset = abs(sum((axis_origin[index] - plane_origin[index]) * plane_normal[index] for index in range(3)) / normal_length)
+    if origin_plane_offset > 1e-6:
+        raise AutonomousFragmentError(
+            "REVOLVE_AXIS_NOT_IN_SKETCH_PLANE: "
+            f"{atomic_id} params.axis.origin_mm must lie in sketch.workplane; "
+            f"plane_offset_mm={origin_plane_offset:.3g}"
+        )
 
 
 def normalize_autonomous_fragment(fragment: dict[str, Any]) -> tuple[dict[str, Any], list[dict[str, str]]]:
@@ -275,6 +483,7 @@ def normalize_autonomous_fragment(fragment: dict[str, Any]) -> tuple[dict[str, A
     normalized = deepcopy(fragment)
     fixes: list[dict[str, str]] = []
     _lift_feature_local_sketches(normalized, fixes=fixes)
+    _lift_param_embedded_sketches(normalized, fixes=fixes)
     feature_values: list[tuple[dict[str, Any], str]] = []
     feature = normalized.get("feature")
     if isinstance(feature, dict):
@@ -310,6 +519,7 @@ def normalize_autonomous_fragment(fragment: dict[str, Any]) -> tuple[dict[str, A
                 location=f"{location}.params",
                 fixes=fixes,
             )
+            _normalize_angle_radians(params, location=f"{location}.params", fixes=fixes)
             axis = params.get("axis")
             if axis is None:
                 axis = {}
@@ -349,10 +559,41 @@ def normalize_autonomous_fragment(fragment: dict[str, Any]) -> tuple[dict[str, A
     sketches = normalized.get("sketches", normalized.get("add_sketches"))
     if isinstance(sketches, list):
         sketch_values.extend((item, f"sketches[{index}]") for index, item in enumerate(sketches) if isinstance(item, dict))
+    sketch_feature_index = 0
+    for current_feature, feature_location in feature_values:
+        atomic_id = str(current_feature.get("atomic_id") or "")
+        if not atomic_id.startswith(("extrude_", "revolve_")):
+            continue
+        current_sketch = sketch_values[sketch_feature_index][0] if sketch_feature_index < len(sketch_values) else None
+        sketch_feature_index += 1
+        if atomic_id.startswith("extrude_"):
+            params = current_feature.get("params")
+            if isinstance(params, dict):
+                _normalize_extrude_direction(
+                    params,
+                    sketch=current_sketch,
+                    location=f"{feature_location}.params",
+                    fixes=fixes,
+                )
     for current_sketch, location in sketch_values:
         profile = current_sketch.get("profile")
         if isinstance(profile, dict) and profile.get("type") == "polygon":
             _move_equivalent_field(profile, source="points", target="vertices", location=f"{location}.profile", fixes=fixes)
+        if isinstance(profile, dict):
+            _normalize_concentric_circle_contours(profile, location=f"{location}.profile", fixes=fixes)
+    # Earlier versions advertised sphere_add as sketch-backed even though its
+    # executor has always used only radius_mm and center_mm. Preserve that
+    # single-feature spelling without keeping an unused locator sketch in the
+    # immutable CDSL document.
+    if (
+        len(feature_values) == 1
+        and str(feature_values[0][0].get("atomic_id") or "") == "sphere_add"
+        and len(sketch_values) == 1
+    ):
+        normalized.pop("sketch", None)
+        normalized.pop("sketches", None)
+        normalized.pop("add_sketches", None)
+        fixes.append({"path": "sketch", "from": "sphere locator sketch", "to": "none", "action": "dropped_unused_legacy_locator"})
     return normalized, fixes
 
 
@@ -363,6 +604,9 @@ def materialize_autonomous_fragment(
     engine: Any,
     selector_tokens: dict[str, dict[str, Any]],
     max_features: int,
+    source: str = "legacy_restore",
+    allow_legacy_aliases: bool = True,
+    expected_atomic_id: str = "",
 ) -> tuple[dict[str, Any], dict[str, Any]]:
     """Append authored geometry while assigning only server-owned metadata.
 
@@ -374,7 +618,25 @@ def materialize_autonomous_fragment(
     # becoming an import cycle.
     from app.services.engine_service import feature_atomic_contract
 
+    from app.services.cdsl_authoring_schema import CanonicalFragmentError, validate_canonical_fragment
+
     normalized_fragment, compatibility_fixes = normalize_autonomous_fragment(fragment)
+    if not allow_legacy_aliases:
+        if compatibility_fixes:
+            first = compatibility_fixes[0]
+            location = str(first.get("path") or "fragment")
+            legacy = str(first.get("from") or "legacy field")
+            canonical = str(first.get("to") or "canonical field")
+            raise AutonomousFragmentError(
+                f"CDSL_CANONICAL_FORMAT_REQUIRED at fragment.{location}: "
+                f"{legacy} is a legacy spelling; use {canonical}"
+            )
+        try:
+            validate_canonical_fragment(engine, fragment, expected_atomic_id=expected_atomic_id)
+        except CanonicalFragmentError as error:
+            raise AutonomousFragmentError(str(error)) from error
+        normalized_fragment = deepcopy(fragment)
+        compatibility_fixes = []
     sketches, features = _fragment_lists(normalized_fragment)
     if len(features) > max_features:
         raise AutonomousFragmentError(f"A fragment may add at most {max_features} feature(s)")
@@ -388,7 +650,12 @@ def materialize_autonomous_fragment(
     materialized_sketches: list[dict[str, Any]] = []
     materialized_features: list[dict[str, Any]] = []
 
-    for index, source_feature in enumerate(features):
+    sketch_index = 0
+    for source_feature in features:
+        # Materialization injects server-owned ids, host faces and pattern
+        # sources. Work on a private copy so the original tool-call fragment
+        # remains intact in audit records and diagnostic replacement cards.
+        source_feature = deepcopy(source_feature)
         forbidden = {"id", "depends_on", "sketch_id", "selectors"} & set(source_feature)
         if forbidden:
             raise AutonomousFragmentError("Feature identity, dependencies, sketch_id and raw selectors are server-owned: " + ", ".join(sorted(forbidden)))
@@ -399,31 +666,68 @@ def materialize_autonomous_fragment(
         params = source_feature.get("params")
         if not isinstance(params, dict):
             raise AutonomousFragmentError("Each fragment feature must contain a params object")
-        if (atomic_id.startswith("hole_") or atomic_id == "hole_wizard") and "host_face" in params:
+        if atomic_id.startswith("revolve_") and params.get("angle_deg") is None:
+            # A shared batch axis is deliberately limited to the axis.  A
+            # default revolution angle would silently turn valid partial
+            # revolves into a different solid, so it remains author-owned.
             raise AutonomousFragmentError(
-                f"{atomic_id} host_face is server-owned: put exactly one face token in selector_tokens and use "
-                "positions as [{\"mm\":[x_mm,y_mm,z_mm]}], not raw host_face or bare coordinate arrays"
+                f"{atomic_id} requires params.angle_deg; revolve_axis (including shared_revolve_axis) "
+                "supplies only params.axis. Declare an explicit angle in degrees."
             )
+        token_backed_param = atomic_id.startswith("hole_") or atomic_id == "hole_wizard"
         tokens = source_feature.pop("selector_tokens", [])
-        if not isinstance(tokens, list) or not all(isinstance(token, str) for token in tokens) or len(set(tokens)) != len(tokens):
+        token_list_is_valid = (
+            isinstance(tokens, list)
+            and all(isinstance(token, str) for token in tokens)
+            and len(set(tokens)) == len(tokens)
+        )
+        if not token_list_is_valid and not token_backed_param:
             raise AutonomousFragmentError("selector_tokens must be a unique array of opaque tokens")
+        if not token_list_is_valid:
+            tokens = []
         selected: list[dict[str, Any]] = []
+        invalid_tokens: list[str] = []
         for token in tokens:
             candidate = selector_tokens.get(token)
             if candidate is None:
+                if token_backed_param:
+                    invalid_tokens.append(token)
+                    continue
                 raise AutonomousFragmentError("TOPOLOGY_TOKEN_INVALID: selector token is not from the active snapshot")
             selected.append(deepcopy(candidate["selector"]))
         slot = contract.get("selector_slot")
-        token_backed_param = atomic_id.startswith("hole_") or atomic_id == "hole_wizard"
+        if token_backed_param:
+            # Report all author-correctable hole errors at once.  A hole is
+            # topology-sensitive, so its host face remains server-owned and
+            # must be injected from one current face token.
+            issues: list[str] = []
+            author_params = (set(contract["required_params"]) | set(contract["optional_params"])) - {"host_face"}
+            if "host_face" in params:
+                issues.append("params.host_face is server-owned; use selector_tokens")
+            missing = [name for name in contract["required_params"] if name != "host_face" and name not in params]
+            if missing:
+                issues.append("missing params: " + ", ".join(missing))
+            unexpected = sorted(name for name in params if name not in author_params and name != "host_face")
+            if unexpected:
+                issues.append("unsupported params: " + ", ".join(unexpected))
+            if not token_list_is_valid:
+                issues.append("selector_tokens must be a unique array of opaque tokens")
+            if invalid_tokens:
+                issues.append("TOPOLOGY_TOKEN_INVALID: selector token is not from the active snapshot")
+            if len(tokens) != 1 or len(selected) != 1 or str((selected[0] if selected else {}).get("kind") or "") != "face":
+                issues.append(f"{atomic_id} requires exactly one face selector token for its host face")
+            if issues:
+                raise AutonomousFragmentError("HOLE_FRAGMENT_INVALID: " + "; ".join(issues))
         if not slot and tokens and not token_backed_param:
             raise AutonomousFragmentError(f"{atomic_id} does not accept selector tokens")
         if isinstance(slot, dict):
             minimum, maximum = int(slot.get("min_items") or 0), int(slot.get("max_items") or 0)
             if not minimum <= len(selected) <= maximum:
                 raise AutonomousFragmentError(f"{atomic_id} requires {minimum}..{maximum} selector token(s)")
-        elif atomic_id.startswith("hole_") or atomic_id == "hole_wizard":
-            if len(selected) != 1 or str(selected[0].get("kind") or "") != "face":
-                raise AutonomousFragmentError(f"{atomic_id} requires exactly one face selector token for its host face")
+        elif token_backed_param:
+            # Hole token validation above deliberately aggregates every
+            # actionable error before this materialization boundary.
+            pass
         elif atomic_id.startswith("revolve_"):
             axis = params.get("axis")
             if not isinstance(axis, dict) or "origin_mm" not in axis or "direction" not in axis:
@@ -437,17 +741,18 @@ def materialize_autonomous_fragment(
         output["id"] = feature_id
         output["depends_on"] = [last_feature_id] if last_feature_id else []
         if contract["requires_sketch"]:
-            if index >= len(sketches):
+            if sketch_index >= len(sketches):
                 raise AutonomousFragmentError(f"{atomic_id} requires one new sketch in the same fragment")
-            sketch = sketches[index]
+            sketch = sketches[sketch_index]
+            sketch_index += 1
             if "id" in sketch or "attachment" in sketch or "profile_from" in sketch:
                 raise AutonomousFragmentError("Sketch identity and topology attachment are server-owned")
             sketch_id = _autonomous_id("sketch", used_sketch_ids)
             sketch["id"] = sketch_id
+            if atomic_id.startswith("revolve_"):
+                _validate_revolve_axis_in_sketch_plane(atomic_id, params, sketch)
             materialized_sketches.append(sketch)
             output["sketch_id"] = sketch_id
-        elif index < len(sketches):
-            raise AutonomousFragmentError(f"{atomic_id} does not accept a sketch")
         if atomic_id.startswith("pattern_") and "source_feature_ids" not in params:
             if not last_feature_id:
                 raise AutonomousFragmentError(f"{atomic_id} needs a committed source feature")
@@ -467,7 +772,7 @@ def materialize_autonomous_fragment(
             output["selectors"] = []
         materialized_features.append(output)
         last_feature_id = feature_id
-    if len(sketches) != len(materialized_sketches):
+    if sketch_index != len(sketches):
         raise AutonomousFragmentError("Each sketch must be consumed by a feature that requires a sketch")
     document = materialize_fragment(document, {"add_sketches": materialized_sketches, "add_features": materialized_features})
     return document, {
@@ -475,6 +780,8 @@ def materialize_autonomous_fragment(
         "source_fragment": deepcopy(fragment),
         "normalized_fragment": deepcopy(normalized_fragment) if compatibility_fixes else None,
         "compatibility_fixes": compatibility_fixes,
+        "compatibility_fix_count": len(compatibility_fixes),
+        "legacy_input": source != "tool_call" or bool(compatibility_fixes),
         "assigned_sketch_ids": [item["id"] for item in materialized_sketches],
         "assigned_feature_ids": [item["id"] for item in materialized_features],
         "selector_candidate_ids": [token for feature in features for token in feature.get("selector_tokens", [])],

backend/app/services/engine_service.py

@@ -148,8 +148,8 @@ def validate_cdsl(cdsl: dict[str, Any], engine: Any) -> None:
             raise ValueError(f"Training-unsafe CDSL field: {key}")
     features = cdsl.get("features")
     sketches = cdsl.get("geometry", {}).get("sketches")
-    if not isinstance(features, list) or not features or not isinstance(sketches, list) or not sketches:
-        raise ValueError("CDSL requires features and parameterized sketches")
+    if not isinstance(features, list) or not features or not isinstance(sketches, list):
+        raise ValueError("CDSL requires a feature list and a geometry.sketches array")
     sketch_ids = {str(sketch.get("id")) for sketch in sketches}
     semantic_contract = _engine_schema(engine)
     atomic_contracts = semantic_contract["feature_atomic_ids"]

backend/app/services/storage.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import json
 import re
 import secrets
+from copy import deepcopy
 from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any
@@ -192,6 +193,10 @@ class WorkspaceStore:
             "lifecycle": "completed",
             "run_id": "",
             "requirements_path": "",
+            "completion_checklist_path": "",
+            "modeling_plan_path": "",
+            "modeling_plan_review_path": "",
+            "modeling_plan_version": 0,
             "agent_state_path": "",
             "active_candidate_id": "",
             "active_branch_id": "main",
@@ -222,6 +227,9 @@ class WorkspaceStore:
             "requirements_path": "",
             "source_requirements_path": "",
             "completion_checklist_path": "",
+            "modeling_plan_path": "",
+            "modeling_plan_review_path": "",
+            "modeling_plan_version": 0,
             "agent_state_path": "",
             "active_candidate_id": "",
             "active_branch_id": "main",
@@ -271,6 +279,15 @@ class WorkspaceStore:
         write_json(self.task_path(task_id), task)
         return task
 
+    def update_task_fields(self, task_id: str, fields: dict[str, Any]) -> dict[str, Any]:
+        """Update task metadata without appending a synthetic revision."""
+        task = self.ensure_task(task_id, "")
+        for key, value in fields.items():
+            task[str(key)] = deepcopy(value)
+        task["updated_at"] = now_iso()
+        write_json(self.task_path(task_id), task)
+        return task
+
     def read_task(self, task_id: str) -> dict[str, Any] | None:
         task = read_json(self.task_path(task_id))
         return self._migrate_task(task, self.task_path(task_id)) if isinstance(task, dict) else None
@@ -293,8 +310,8 @@ class WorkspaceStore:
         return task
 
     def finish_generation(self, task_id: str, *, lifecycle: str, failure: dict[str, Any] | None = None) -> dict[str, Any]:
-        if lifecycle not in {"completed", "failed"}:
-            raise ValueError("Generation lifecycle must be completed or failed")
+        if lifecycle not in {"completed", "failed", "cancelled", "waiting_review", "failed_review_service"}:
+            raise ValueError("Generation lifecycle must be completed, failed, cancelled, waiting_review, or failed_review_service")
         task = self.ensure_task(task_id, "")
         failure_path = ""
         if failure:
@@ -421,6 +438,53 @@ class WorkspaceStore:
         path = self.artifact_path(task_id, relative)
         return path.read_text(encoding="utf-8") if path.is_file() else ""
 
+    def write_modeling_plan(self, task_id: str, markdown: str, *, version: int = 1) -> Path:
+        """Persist one immutable, versioned modeling-plan document."""
+        text = str(markdown or "").strip()
+        if not text:
+            raise ValueError("modeling plan must not be empty")
+        task = self.ensure_task(task_id, "")
+        version = max(1, int(version))
+        relative = Path("plans") / f"modeling-plan-v{version}.md"
+        path = self.task_dir(task_id) / relative
+        if path.exists():
+            raise ValueError("modeling plan version already exists")
+        path.parent.mkdir(parents=True, exist_ok=True)
+        path.write_text(text + "\n", encoding="utf-8")
+        task["modeling_plan_path"] = relative.as_posix()
+        task["modeling_plan_version"] = version
+        task["updated_at"] = now_iso()
+        write_json(self.task_path(task_id), task)
+        return path
+
+    def read_modeling_plan(self, task_id: str) -> str:
+        task = self.read_task(task_id) or {}
+        relative = str(task.get("modeling_plan_path") or "")
+        if not relative:
+            return ""
+        path = self.artifact_path(task_id, relative)
+        return path.read_text(encoding="utf-8") if path.is_file() else ""
+
+    def write_modeling_plan_review(self, task_id: str, review: dict[str, Any], *, version: int) -> Path:
+        task = self.ensure_task(task_id, "")
+        version = max(1, int(version))
+        relative = Path("plans") / f"modeling-plan-v{version}.review.json"
+        path = self.task_dir(task_id) / relative
+        if path.exists():
+            raise ValueError("modeling plan review already exists")
+        path.parent.mkdir(parents=True, exist_ok=True)
+        write_json(path, review)
+        task["modeling_plan_review_path"] = relative.as_posix()
+        task["updated_at"] = now_iso()
+        write_json(self.task_path(task_id), task)
+        return path
+
+    def read_modeling_plan_review(self, task_id: str) -> dict[str, Any] | None:
+        task = self.read_task(task_id) or {}
+        relative = str(task.get("modeling_plan_review_path") or "")
+        value = read_json(self.artifact_path(task_id, relative), {}) if relative else None
+        return value if isinstance(value, dict) else None
+
     def new_candidate(self, task_id: str) -> tuple[str, Path]:
         task = self.ensure_task(task_id, "")
         candidate_id = f"candidate_{secrets.token_hex(8)}"

backend/app/services/visual_review.py

@@ -5,6 +5,7 @@ from __future__ import annotations
 import base64
 import copy
 import json
+import re
 from pathlib import Path
 from typing import Any
 
@@ -67,6 +68,28 @@ CANDIDATE_REVIEW_TOOL = {
 }
 
 
+MODELING_PLAN_REVIEW_TOOL = {
+    "type": "function",
+    "function": {
+        "name": "review_modeling_plan",
+        "description": "Independently review a CAD modeling plan for requirement coverage, coherent step grouping, dependencies, and observable evidence. Never generate or modify CDSL.",
+        "parameters": {
+            "type": "object",
+            "properties": {
+                "verdict": {"enum": ["pass", "revise"]},
+                "confidence": {"type": "number", "minimum": 0, "maximum": 1},
+                "issues": {"type": "array", "items": {"type": "object", "properties": {"type": {"type": "string"}, "step_id": {"type": "string"}, "message": {"type": "string"}}, "required": ["type", "message"], "additionalProperties": False}, "maxItems": 20},
+                "coverage": {"type": "array", "items": {"type": "object", "properties": {"requirement": {"type": "string"}, "step_id": {"type": "string"}, "status": {"enum": ["covered", "missing"]}, "evidence": {"type": "string"}}, "required": ["requirement", "step_id", "status", "evidence"], "additionalProperties": False}},
+                "step_checks": {"type": "array", "items": {"type": "object", "properties": {"step_id": {"type": "string"}, "status": {"enum": ["pass", "fail"]}, "notes": {"type": "string"}}, "required": ["step_id", "status", "notes"], "additionalProperties": False}},
+                "action_checks": {"type": "array", "items": {"type": "object", "properties": {"step_id": {"type": "string"}, "status": {"enum": ["pass", "fail"]}, "notes": {"type": "string"}, "required_action_count": {"type": "integer", "minimum": 1}}, "required": ["step_id", "status", "notes", "required_action_count"], "additionalProperties": False}},
+            },
+            "required": ["verdict", "confidence", "issues", "coverage", "step_checks", "action_checks"],
+            "additionalProperties": False,
+        },
+    },
+}
+
+
 class VisualReviewError(RuntimeError):
     pass
 
@@ -75,6 +98,51 @@ class _CandidateReviewFormatError(VisualReviewError):
     """A locally detected invalid reviewer tool result, eligible for one retry."""
 
 
+class _ModelingPlanReviewFormatError(VisualReviewError):
+    """A locally detected invalid modeling-plan verdict, eligible for one retry."""
+
+
+def _checklist_key(value: Any) -> str:
+    return " ".join(str(value or "").strip().split()).casefold()
+
+
+def _looks_like_operation_id(value: str) -> bool:
+    token = str(value or "").strip().casefold()
+    if not token or "_" not in token:
+        return token in {"fillet", "chamfer"}
+    prefixes = ("extrude_", "revolve_", "hole_", "pattern_", "sphere_", "reference_", "cylinder_", "sweep_")
+    suffixes = ("_add", "_cut", "_blind", "_wizard", "_linear", "_circular", "_mirror")
+    return token.startswith(prefixes) or token.endswith(suffixes)
+
+
+def _unsupported_operation_mentions(result: dict[str, Any], runtime_operations: list[dict[str, Any]]) -> list[str]:
+    """Find capability-shaped names in reviewer prose that Runtime cannot execute."""
+    supported = {
+        str(item.get("atomic_id") or "").strip().casefold()
+        for item in runtime_operations
+        if isinstance(item, dict) and str(item.get("atomic_id") or "").strip()
+    }
+    mentions: set[str] = set()
+    for section in (result.get("issues"), result.get("coverage"), result.get("step_checks"), result.get("action_checks")):
+        if not isinstance(section, list):
+            continue
+        for row in section:
+            if not isinstance(row, dict):
+                continue
+            for value in row.values():
+                if not isinstance(value, str):
+                    continue
+                for token in re.findall(r"(?<![A-Za-z0-9_])([A-Za-z][A-Za-z0-9_]*)(?![A-Za-z0-9_])", value):
+                    normalized = token.casefold()
+                    if normalized in supported or not _looks_like_operation_id(normalized):
+                        continue
+                    # Runtime capabilities are exact identifiers.  A prefix
+                    # or human shorthand (for example extrude_cut for
+                    # extrude_cut_blind) is still invalid and must be revised.
+                    mentions.add(token)
+    return sorted(mentions, key=str.casefold)
+
+
 def _thinking_tool_choice_rejected(response: httpx.Response) -> bool:
     """Recognize the only compatibility error for which retrying is sound.
 
@@ -99,6 +167,10 @@ def candidate_review_tool() -> dict[str, Any]:
     return json.loads(json.dumps(CANDIDATE_REVIEW_TOOL))
 
 
+def modeling_plan_review_tool() -> dict[str, Any]:
+    return json.loads(json.dumps(MODELING_PLAN_REVIEW_TOOL))
+
+
 def _image_part(path: Path) -> dict[str, Any]:
     encoded = base64.b64encode(path.read_bytes()).decode("ascii")
     media = "image/jpeg" if path.suffix.lower() in {".jpg", ".jpeg"} else "image/png"
@@ -222,6 +294,9 @@ async def review_candidate_batch(
     batch_goal: str,
     deterministic_report: dict[str, Any],
     node_id: str,
+    plan_step: dict[str, Any] | None = None,
+    plan_feature_ids: list[str] | None = None,
+    plan_action: dict[str, Any] | None = None,
 ) -> dict[str, Any]:
     """Review a staged batch against its local goal and the frozen checklist."""
     provider, model = settings.resolve_review_model()
@@ -237,6 +312,9 @@ async def review_candidate_batch(
             "frozen_requirements": requirements,
             "completion_checklist": checklist,
             "batch_goal": batch_goal,
+            "plan_step": plan_step or None,
+            "plan_feature_ids": plan_feature_ids or [],
+            "plan_action": plan_action or None,
             "deterministic_report": deterministic_report,
             "instruction": (
                 "Assess this staged batch, not overall task completion. Accept only if the batch goal is achieved "
@@ -247,7 +325,9 @@ async def review_candidate_batch(
                 "intermediate model may be accepted when its batch goal is achieved. Return one coverage row for every "
                 "completion checklist item, preserving exact item text. Use pending for future work and regressed when "
                 "this batch breaks previously achieved work. Reject on disconnected geometry when the requirements call "
-                "for one body, wrong orientation, visibly wrong geometry, or a failed batch goal."
+                "for one body, wrong orientation, visibly wrong geometry, or a failed batch goal. "
+                "When plan_step is supplied, reject operations outside that step and confirm its planned feature goal. "
+                "A step may contain multiple related actions; when plan_action is supplied, assess only that action, confirm the candidate changes its target, and reject unrelated or multiple independent profiles."
             ),
             "render_manifest": {
                 "renderer": manifest.get("renderer"),
@@ -341,3 +421,171 @@ async def review_candidate_batch(
         "batch_goal": batch_goal,
         **result,
     }
+
+
+async def review_modeling_plan(
+    settings: Settings,
+    *,
+    source_requirements: str,
+    requirements: str,
+    checklist: list[str],
+    plan: dict[str, Any],
+    runtime_operations: list[dict[str, Any]],
+    node_id: str = "modeling-plan",
+) -> dict[str, Any]:
+    """Ask an independent model to simulate and review a modeling plan."""
+    provider, model = settings.resolve_review_model()
+    payload_context = {
+        "node_id": node_id,
+        "source_requirements": source_requirements,
+        "frozen_requirements": requirements,
+        "completion_checklist": checklist,
+        "modeling_plan": plan,
+        "runtime_operations": runtime_operations,
+        "instruction": (
+            "Review the plan only; do not generate CDSL. Treat modeling_plan.plan_text as semantic "
+            "guidance, not a schema: missing structures/features arrays or machine IDs are not by "
+            "themselves failures. Infer intended structures, ordering, relationships, and evidence "
+            "from the prose. Check every checklist item, dependency order, step cohesion, topology "
+            "preconditions, Runtime feasibility, action granularity, and observable evidence. A semantic "
+            "step may contain related or repeated targets, but each independently located profile "
+            "or Runtime feature must be enumerated as a separate action within that same step. Each action "
+            "must be executable as one Runtime feature. A multi-position hole or supported pattern may remain "
+            "one action when all positions share the same host and operation contract. Treat any supplied "
+            "action records as execution units, and set required_action_count to the minimum number the step's "
+            "semantics require. Return fail when the plan contains fewer actions than that number. Return pass when the plan "
+            "is actionable enough for an LLM to generate CDSL in coherent batches. Do not require "
+            "colors or materials when runtime_operations does not provide them; accept a geometrically "
+            "equivalent ring, groove, or separated feature and mention the limitation only as guidance. "
+            "Only return revise for a real requirement omission, contradictory geometry, unsafe ordering, "
+            "an operation name that is not present in runtime_operations, or an operation that cannot plausibly be implemented. "
+            "Do not downgrade an unsupported operation to vague guidance. If a machine operation is mentioned, it must be an exact ID from runtime_operations; otherwise return revise and describe the semantic intent without inventing an operation name. "
+            "Return exactly one coverage row per checklist item."
+        ),
+    }
+    payload = {
+        "model": model.id,
+        "messages": [
+            {"role": "system", "content": "You are an independent CAD modeling-plan reviewer. You may only call review_modeling_plan."},
+            {"role": "user", "content": json.dumps(payload_context, ensure_ascii=False)},
+        ],
+        "tools": [modeling_plan_review_tool()],
+        "tool_choice": {"type": "function", "function": {"name": "review_modeling_plan"}},
+        "temperature": 0,
+    }
+    payload.update(provider.chat_completion_options)
+    headers = {"Authorization": f"Bearer {provider.api_key}", "Content-Type": "application/json"}
+
+    async def request_review(client: httpx.AsyncClient, request_payload: dict[str, Any]) -> httpx.Response:
+        response = await client.post(f"{provider.base_url}/chat/completions", headers=headers, json=request_payload)
+        if _thinking_tool_choice_rejected(response):
+            request_payload.pop("tool_choice", None)
+            response = await client.post(f"{provider.base_url}/chat/completions", headers=headers, json=request_payload)
+        if response.status_code >= 400:
+            raise VisualReviewError(f"Modeling plan review request failed ({response.status_code}): {response.text[:500]}")
+        return response
+
+    def validate_response(response: httpx.Response) -> dict[str, Any]:
+        try:
+            call = response.json()["choices"][0]["message"]["tool_calls"][0]
+            if call["function"]["name"] != "review_modeling_plan":
+                raise KeyError("wrong tool")
+            result = json.loads(call["function"]["arguments"])
+        except (KeyError, IndexError, TypeError, json.JSONDecodeError) as error:
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer did not return a valid review tool call") from error
+        allowed = {"verdict", "confidence", "issues", "coverage", "step_checks", "action_checks"}
+        if not isinstance(result, dict) or set(result) != allowed or result.get("verdict") not in {"pass", "revise"}:
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer returned an invalid verdict")
+        try:
+            confidence = float(result.get("confidence"))
+        except (TypeError, ValueError) as error:
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer returned an invalid confidence") from error
+        if not 0 <= confidence <= 1:
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer confidence is outside [0, 1]")
+        if not isinstance(result.get("issues"), list) or not all(isinstance(item, dict) for item in result["issues"]):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer returned invalid issues")
+        expected = {_checklist_key(item): item for item in checklist}
+        coverage = result.get("coverage")
+        if not isinstance(coverage, list) or len(coverage) != len(checklist):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer must return coverage for every checklist item")
+        seen: set[str] = set()
+        for item in coverage:
+            if not isinstance(item, dict) or set(item) != {"requirement", "step_id", "status", "evidence"}:
+                raise _ModelingPlanReviewFormatError("Modeling plan reviewer returned an invalid coverage row")
+            key = _checklist_key(item.get("requirement"))
+            if key not in expected or key in seen or item.get("status") not in {"covered", "missing"} or not str(item.get("evidence") or "").strip():
+                raise _ModelingPlanReviewFormatError("Modeling plan reviewer coverage does not match the frozen checklist")
+            item["requirement"] = expected[key]
+            seen.add(key)
+        step_records = {
+            str(item.get("step_id") or ""): item
+            for item in plan.get("steps") or () if isinstance(item, dict)
+        }
+        steps = set(step_records)
+        checks = result.get("step_checks")
+        if not isinstance(checks, list) or len(checks) != len(steps):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer must return one step check per plan step")
+        checked: set[str] = set()
+        for item in checks:
+            if not isinstance(item, dict) or set(item) != {"step_id", "status", "notes"}:
+                raise _ModelingPlanReviewFormatError("Modeling plan reviewer returned an invalid step check")
+            step_id = str(item.get("step_id") or "")
+            if step_id not in steps or step_id in checked or item.get("status") not in {"pass", "fail"}:
+                raise _ModelingPlanReviewFormatError("Modeling plan reviewer step checks do not match the plan")
+            checked.add(step_id)
+        action_checks = result.get("action_checks")
+        if not isinstance(action_checks, list) or len(action_checks) != len(steps):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer must return one action check per plan step")
+        action_checked: set[str] = set()
+        for item in action_checks:
+            if not isinstance(item, dict) or set(item) != {"step_id", "status", "notes", "required_action_count"}:
+                raise _ModelingPlanReviewFormatError("Modeling plan reviewer returned an invalid action check")
+            step_id = str(item.get("step_id") or "")
+            required_count = item.get("required_action_count")
+            if (
+                step_id not in steps
+                or step_id in action_checked
+                or item.get("status") not in {"pass", "fail"}
+                or not isinstance(required_count, int)
+                or isinstance(required_count, bool)
+                or required_count < 1
+            ):
+                raise _ModelingPlanReviewFormatError("Modeling plan reviewer action checks do not match the plan")
+            planned_actions = [
+                action for action in (step_records[step_id].get("actions") or ())
+                if isinstance(action, dict)
+            ]
+            if required_count > len(planned_actions) and item.get("status") != "fail":
+                raise _ModelingPlanReviewFormatError(
+                    "Modeling plan reviewer must fail an action check when required_action_count exceeds the plan's action count"
+                )
+            action_checked.add(step_id)
+        if result["verdict"] == "pass" and any(item.get("status") != "covered" for item in coverage):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer may pass only when every checklist item is covered")
+        if result["verdict"] == "pass" and any(item.get("status") != "pass" for item in checks):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer may pass only when every step check passes")
+        if result["verdict"] == "pass" and any(item.get("status") != "pass" for item in action_checks):
+            raise _ModelingPlanReviewFormatError("Modeling plan reviewer may pass only when every action check passes")
+        unsupported = _unsupported_operation_mentions(result, runtime_operations)
+        if unsupported:
+            # These strings came from the reviewer's explanatory prose, not
+            # from the submitted plan.  The plan parser enforces exact IDs for
+            # explicit operation declarations; do not reject an otherwise
+            # valid semantic plan because the reviewer hallucinated a
+            # shorthand while describing an alternative. Keep this warning in
+            # the raw audit record and scrub it before author exposure.
+            result["unsupported_operations"] = unsupported
+            result["review_warnings"] = [
+                "Reviewer mentioned operation name(s) absent from runtime_operations; those names were ignored as guidance."
+            ]
+        return result
+
+    async with httpx.AsyncClient(timeout=settings.llm_timeout_s) as client:
+        response = await request_review(client, payload)
+        try:
+            result = validate_response(response)
+        except _ModelingPlanReviewFormatError as error:
+            retry_payload = copy.deepcopy(payload)
+            retry_payload["messages"].append({"role": "user", "content": f"Your previous review was rejected locally: {error}. Return only a complete review_modeling_plan tool call with one coverage row per checklist item and one step_checks and action_checks row per plan step."})
+            result = validate_response(await request_review(client, retry_payload))
+    return {"schema_version": "cad.modeling-plan-review.v1", "node_id": node_id, "model": model.id, **result}

backend/app/settings.py

@@ -65,6 +65,8 @@ class Settings:
     agent_max_features_per_fragment: int = 6
     agent_context_char_limit: int = 14000
     agent_render_cache: bool = True
+    modeling_plan_enabled: bool = True
+    modeling_plan_max_revisions: int = 2
     autonomous_generation: bool = True
     resume_running_tasks_on_startup: bool = True
 
@@ -199,6 +201,8 @@ def get_settings() -> Settings:
         agent_max_features_per_fragment=max(1, min(6, int(os.getenv("CDSL_AGENT_MAX_FEATURES_PER_FRAGMENT", "6")))),
         agent_context_char_limit=max(4000, int(os.getenv("CDSL_AGENT_CONTEXT_CHAR_LIMIT", "14000"))),
         agent_render_cache=_env_flag("CDSL_AGENT_RENDER_CACHE", True),
+        modeling_plan_enabled=_env_flag("CDSL_MODELING_PLAN_ENABLED", True),
+        modeling_plan_max_revisions=max(1, int(os.getenv("CDSL_MODELING_PLAN_MAX_REVISIONS", "2"))),
         autonomous_generation=True,
         # Production instances recover durable runs by default. Test workers
         # can disable this before startup to guarantee they touch only tasks

backend/engine/cdsl_engine/cdsl_schema.json

@@ -13,7 +13,7 @@
     "geometry": {
       "type": "object",
       "properties": {
-        "sketches": {"type": "array", "minItems": 1, "items": {"$ref": "#/$defs/sketch"}}
+        "sketches": {"type": "array", "items": {"$ref": "#/$defs/sketch"}}
       },
       "required": ["sketches"],
       "additionalProperties": false

backend/engine/cdsl_engine/profile_schema.json

@@ -15,7 +15,7 @@
     "hole_blind": {"summary": "Cut one or more blind cylindrical holes in the current body.", "required_params": ["diameter_mm", "depth_mm", "positions", "host_face"], "optional_params": ["drill_angle_rad"], "position_format": "positions is a non-empty array of objects: [{\"mm\":[u_mm,v_mm,w_mm]}]. A bare coordinate array is invalid. host_face is injected from exactly one face selector token.", "requires_sketch": false},
     "hole_countersink": {"summary": "Cut one or more blind holes with countersink dimensions.", "required_params": ["diameter_mm", "depth_mm", "positions", "countersink_diameter_mm", "countersink_angle_rad", "host_face"], "optional_params": ["drill_angle_rad"], "position_format": "positions is a non-empty array of objects: [{\"mm\":[u_mm,v_mm,w_mm]}]. A bare coordinate array is invalid. host_face is injected from exactly one face selector token.", "requires_sketch": false},
     "hole_counterbore": {"summary": "Cut one or more blind holes with counterbore dimensions.", "required_params": ["diameter_mm", "depth_mm", "positions", "counterbore_diameter_mm", "counterbore_depth_mm", "host_face"], "optional_params": ["drill_angle_rad"], "position_format": "positions is a non-empty array of objects: [{\"mm\":[u_mm,v_mm,w_mm]}]. A bare coordinate array is invalid. host_face is injected from exactly one face selector token.", "requires_sketch": false},
-    "sphere_add": {"summary": "Add one spherical solid at an explicit model-space center.", "required_params": ["radius_mm", "center_mm"], "optional_params": [], "requires_sketch": true, "produces_body": true},
+    "sphere_add": {"summary": "Add one spherical solid at an explicit model-space center.", "required_params": ["radius_mm", "center_mm"], "optional_params": [], "requires_sketch": false, "produces_body": true},
     "fillet": {"summary": "Apply a radius to selected edges or faces.", "required_params": ["radius_mm"], "optional_params": ["tangent_propagation"], "requires_sketch": false, "selector_slot": {"path": "feature.selectors", "min_items": 1, "max_items": 64}},
     "chamfer": {"summary": "Apply an equal-distance or angle-distance chamfer to selected edges or faces.", "required_params": ["distance_mm"], "optional_params": ["distance_2_mm", "angle_rad"], "requires_sketch": false, "selector_slot": {"path": "feature.selectors", "min_items": 1, "max_items": 64}},
     "pattern_linear": {"summary": "Repeat source features along one or two directions.", "required_params": ["source_feature_ids", "direction_1", "spacing_1_mm", "pattern_count_1"], "optional_params": ["direction_2", "spacing_2_mm", "pattern_count_2"], "requires_sketch": false},

backend/engine/cdsl_engine/rebuild.py

@@ -39,9 +39,10 @@ def run_rebuild(cdsl: dict[str, Any], out_step: Path, ctx_file: Path | None = No
     # macro profiles and therefore never invoke this adapter.
     cdsl = lower_legacy_profiles(cdsl)
     sketches = cdsl.get("geometry", {}).get("sketches", [])
-    all_drawable = bool(sketches) and all(
-        _sketch_is_cdsl_drawable(s) for s in sketches
-    )
+    # Sketchless parameterized features (for example sphere_add) are fully
+    # executable by the CDSL-only runtime. ``all([])`` deliberately keeps
+    # that path available rather than forcing an unavailable legacy fallback.
+    all_drawable = all(_sketch_is_cdsl_drawable(s) for s in sketches)
 
     cdsl_only_error: Exception | None = None
     if all_drawable and not force_exact:

backend/engine/cdsl_engine/runtime.py

@@ -373,6 +373,23 @@ def _revolve_axis(node: FeaturePlanNode, session: ExecutionSession) -> AxisSpec:
     return resolution.record.value
 
 
+def _validate_revolve_axis_in_sketch_plane(axis: AxisSpec, sketch: dict[str, Any]) -> None:
+    """Defend direct CDSL execution from an out-of-plane revolve axis."""
+    plane = PlaneSpec.from_mapping(sketch.get("workplane") or {})
+    direction_normal_dot = abs(vector_dot(axis.direction, plane.normal))
+    if direction_normal_dot > 1e-7:
+        raise ValueError(
+            "REVOLVE_AXIS_NOT_IN_SKETCH_PLANE: params.axis.direction must be parallel to "
+            f"sketch.workplane; abs(dot(axis_direction, plane_normal))={direction_normal_dot:.3g}"
+        )
+    origin_plane_offset = abs(vector_dot(vector_subtract(axis.origin_mm, plane.origin_mm), plane.normal))
+    if origin_plane_offset > 1e-6:
+        raise ValueError(
+            "REVOLVE_AXIS_NOT_IN_SKETCH_PLANE: params.axis.origin_mm must lie in "
+            f"sketch.workplane; plane_offset_mm={origin_plane_offset:.3g}"
+        )
+
+
 def _shape_from_primary(node: FeaturePlanNode, session: ExecutionSession, *, sketch: dict[str, Any] | None = None) -> FeatureResult:
     # 主形状特征（拉伸 / 旋转）的统一入口：由草图生成实体并与当前主体做布尔合并或切除。
     
@@ -402,6 +419,7 @@ def _shape_from_primary(node: FeaturePlanNode, session: ExecutionSession, *, ske
     else:
         #   旋转：解析旋转轴并校验旋转角，然后绕轴旋转每个面得到实体列表。
         axis = _revolve_axis(node, session)
+        _validate_revolve_axis_in_sketch_plane(axis, selected_sketch)
         angle = float(node.params.get("angle_deg") or 0.0)
         if angle <= 0:
             raise ValueError("revolve requires angle_deg > 0")

backend/tests/test_plan_actions.py

@@ -0,0 +1,225 @@
+from __future__ import annotations
+
+import asyncio
+from unittest.mock import AsyncMock, patch
+
+from app.services.autonomous_cdsl_generation import (
+    AutonomousCdslGenerationRunner,
+    parse_modeling_plan,
+)
+from app.services.storage import WorkspaceStore
+from pathlib import Path
+from app.settings import ProviderConfig, ProviderModel, Settings
+
+
+def _plan():
+    return parse_modeling_plan(
+        """
+[STEP step_3]
+goal: 两端夹紧槽
+relationship: 左右槽属于同一夹紧结构，但分别作用于左右轴套
+[ACTION left_clamp_slot]
+step: step_3
+title: 左轴套夹紧槽
+target: left_hub
+operation: extrude_cut_blind
+[ACTION right_clamp_slot]
+step: step_3
+title: 右轴套夹紧槽
+target: right_hub
+operation: extrude_cut_blind
+depends_on: left_clamp_slot
+""",
+        checklist=["两端夹紧槽"],
+        runtime_atomic_ids={"extrude_cut_blind"},
+    )
+
+
+def test_related_targets_stay_in_one_step_with_independent_actions():
+    plan = _plan()
+    assert [item["action_id"] for item in plan["steps"][0]["actions"]] == [
+        "left_clamp_slot",
+        "right_clamp_slot",
+    ]
+    assert plan["steps"][0]["relationship"] == "左右槽属于同一夹紧结构，但分别作用于左右轴套"
+    assert plan["actions"][1]["depends_on"] == ["left_clamp_slot"]
+
+
+def test_soft_action_headings_are_indexed_without_forcing_machine_fields():
+    plan = parse_modeling_plan(
+        "## Step 3 - 两端夹紧槽\n### Action 3a - 左槽\n切左槽\n### Action 3b - 右槽\n切右槽",
+        checklist=["两端夹紧槽"],
+        runtime_atomic_ids={"extrude_cut_blind"},
+    )
+    assert [item["title"] for item in plan["steps"][0]["actions"]] == ["左槽", "右槽"]
+    assert plan["steps"][0]["actions"][1]["depends_on"] == ["step_1_action_1"]
+
+
+def test_action_progress_advances_within_step_before_next_step(tmp_path):
+    provider = ProviderConfig("test", "Test", "https://example.invalid/v1", "test-key", (ProviderModel("test-model"),))
+    settings = Settings(task_root=tmp_path / "tasks", conversation_root=tmp_path / "conversations", library_root=Path("backend/cdsl_library"), engine_root=Path("backend/engine/cdsl_engine"), llm_base_url=provider.base_url, llm_api_key=provider.api_key, llm_model="test-model", llm_timeout_s=1, default_provider_id="test", providers=(provider,))
+    store = WorkspaceStore(settings)
+    runner = AutonomousCdslGenerationRunner(settings, store, AsyncMock())
+    state = {
+        "modeling_plan_enforced": True,
+        "modeling_plan_status": "approved",
+        "modeling_plan": _plan(),
+        "active_plan_step_id": "step_3",
+        "active_plan_action_id": "left_clamp_slot",
+        "plan_action_status": {"left_clamp_slot": "pending", "right_clamp_slot": "pending"},
+        "plan_feature_status": {},
+        "plan_step_status": {"step_3": "pending"},
+    }
+    runner._mark_plan_progress(state, {
+        "plan_step_id": "step_3",
+        "plan_action_id": "left_clamp_slot",
+        "atomic_ids": ["extrude_cut_blind"],
+    })
+    assert state["active_plan_step_id"] == "step_3"
+    assert state["active_plan_action_id"] == "right_clamp_slot"
+    assert state["plan_action_status"]["left_clamp_slot"] == "complete"
+    assert state["plan_action_status"]["right_clamp_slot"] == "pending"
+    assert state["plan_step_status"]["step_3"] == "pending"
+
+
+def test_action_operation_mismatch_is_explicit():
+    provider = ProviderConfig("test", "Test", "https://example.invalid/v1", "test-key", (ProviderModel("test-model"),))
+    settings = Settings(task_root=Path("/tmp/cdsl-cad-plan-action-test/tasks"), conversation_root=Path("/tmp/cdsl-cad-plan-action-test/conversations"), library_root=Path("backend/cdsl_library"), engine_root=Path("backend/engine/cdsl_engine"), llm_base_url=provider.base_url, llm_api_key=provider.api_key, llm_model="test-model", llm_timeout_s=1, default_provider_id="test", providers=(provider,))
+    store = WorkspaceStore(settings)
+    runner = AutonomousCdslGenerationRunner(settings, store, AsyncMock())
+    state = {
+        "modeling_plan_enforced": True,
+        "modeling_plan_status": "approved",
+        "modeling_plan": _plan(),
+        "active_plan_step_id": "step_3",
+        "active_plan_action_id": "left_clamp_slot",
+        "plan_action_status": {"left_clamp_slot": "pending", "right_clamp_slot": "pending"},
+    }
+    action = runner._plan_current_action(state)
+    assert action is not None
+    assert action["operation"] == "extrude_cut_blind"
+
+
+def test_enforced_submit_schema_exposes_action_id():
+    from app.services.autonomous_cdsl_generation import _operation_contract_payload
+    from app.services.cdsl_authoring_schema import operation_contract_hash
+    from app.services.engine_service import load_engine
+
+    provider = ProviderConfig("test", "Test", "https://example.invalid/v1", "test-key", (ProviderModel("test-model"),))
+    root = Path("/tmp/cdsl-cad-plan-action-schema")
+    settings = Settings(task_root=root / "tasks", conversation_root=root / "conversations", library_root=Path("backend/cdsl_library"), engine_root=Path("backend/engine/cdsl_engine"), llm_base_url=provider.base_url, llm_api_key=provider.api_key, llm_model="test-model", llm_timeout_s=1, default_provider_id="test", providers=(provider,))
+    store = WorkspaceStore(settings)
+    task = store.ensure_task(None, "schema")
+    contract = _operation_contract_payload(load_engine(settings), "extrude_cut_blind")
+    state = {"modeling_plan_enforced": True, "modeling_plan_mode": "indexed", "active_operation_contract": contract, "pending_operation_revision": "", "pending_operation_contract_hash": operation_contract_hash("extrude_cut_blind", contract["canonical_fragment_schema"])}
+    tool = AutonomousCdslGenerationRunner(settings, store, AsyncMock())._canonical_submit_tool(task, state)
+    assert tool is not None
+    assert "plan_action_id" in tool["function"]["parameters"]["properties"]
+    assert "plan_action_id" in tool["function"]["parameters"]["required"]
+
+
+def test_multiple_outer_profiles_request_plan_action_split_without_schema_loop(tmp_path):
+    from app.services.engine_service import load_engine
+
+    provider = ProviderConfig("test", "Test", "https://example.invalid/v1", "test-key", (ProviderModel("test-model"),))
+    settings = Settings(task_root=tmp_path / "tasks", conversation_root=tmp_path / "conversations", library_root=Path("backend/cdsl_library"), engine_root=Path("backend/engine/cdsl_engine"), llm_base_url=provider.base_url, llm_api_key=provider.api_key, llm_model="test-model", llm_timeout_s=1, default_provider_id="test", providers=(provider,))
+    store = WorkspaceStore(settings)
+    task = store.ensure_task(None, "left and right slots")
+    task_id = str(task["task_id"])
+    store.write_requirements_document(task_id, "# Frozen\nCreate left and right slots.")
+    runner = AutonomousCdslGenerationRunner(settings, store, AsyncMock())
+    engine = load_engine(settings)
+    plan = parse_modeling_plan(
+        "## Step 1 - Slots\n### Action 1a - Left slot\n### Action 1b - Right slot",
+        checklist=["left and right slots"],
+        runtime_atomic_ids={"extrude_cut_blind"},
+    )
+    state = {
+        "modeling_plan_enforced": True,
+        "modeling_plan_status": "approved",
+        "modeling_plan": plan,
+        "active_plan_step_id": "step_1",
+        "active_plan_action_id": "step_1_action_1",
+        "plan_step_status": {"step_1": "pending"},
+        "plan_action_status": {"step_1_action_1": "pending", "step_1_action_2": "pending"},
+        "candidate_attempts_by_head": {},
+    }
+
+    asyncio.run(runner._execute_tool(
+        task_id, "left and right slots", state, engine, "get_cdsl_operation_contract",
+        {"atomic_id": "extrude_cut_blind"},
+    ))
+    fragment = {
+        "sketch": {
+            "workplane": {"origin_mm": [0, 0, 0], "x_dir": [1, 0, 0], "normal": [0, 0, 1]},
+            "profile": {
+                "type": "analytic_contours",
+                "contours": [
+                    {"role": "outer", "closed": True, "segments": [{"type": "circle", "center": [-10, 0], "radius_mm": 2}]},
+                    {"role": "outer", "closed": True, "segments": [{"type": "circle", "center": [10, 0], "radius_mm": 2}]},
+                ],
+            },
+        },
+        "feature": {"atomic_id": "extrude_cut_blind", "params": {"distance_mm": 5}},
+    }
+    events, progressed = asyncio.run(runner._execute_tool(
+        task_id, "left and right slots", state, engine, "submit_cdsl_fragment",
+        {
+            "plan_step_id": "step_1",
+            "plan_action_id": "step_1_action_1",
+            "batch_goal": "Create both slots.",
+            "fragment": fragment,
+        },
+    ))
+
+    assert progressed is False
+    assert events[0][1]["diagnostic"]["code"] == "CDSL_PROFILE_MULTIPLE_OUTERS"
+    assert state["modeling_plan_status"] == "revise"
+    assert state["candidate_action_required"]["reason"] == "plan_action_split_required"
+    assert state["format_correction"] == {}
+    assert not state.get("schema_retry_counts")
+    assert (store.read_task(task_id) or {}).get("active_revision") == ""
+
+
+def test_reviewer_action_count_can_require_plan_revision_without_server_semantic_rules(tmp_path):
+    from app.services.engine_service import load_engine
+
+    provider = ProviderConfig("test", "Test", "https://example.invalid/v1", "test-key", (ProviderModel("test-model"),))
+    settings = Settings(task_root=tmp_path / "tasks", conversation_root=tmp_path / "conversations", library_root=Path("backend/cdsl_library"), engine_root=Path("backend/engine/cdsl_engine"), llm_base_url=provider.base_url, llm_api_key=provider.api_key, llm_model="test-model", llm_timeout_s=1, default_provider_id="test", providers=(provider,))
+    store = WorkspaceStore(settings)
+    task = store.ensure_task(None, "left and right slots")
+    task_id = str(task["task_id"])
+    store.write_requirements_document(task_id, "# Frozen\nCreate left and right slots.")
+    store.write_completion_checklist(task_id, "- [ ] left and right slots")
+    runner = AutonomousCdslGenerationRunner(settings, store, AsyncMock())
+    state = {
+        "modeling_plan_enforced": True,
+        "modeling_plan_status": "missing",
+        "modeling_plan_review_attempts": 0,
+    }
+    reviewer_revise = {
+        "schema_version": "cad.modeling-plan-review.v1",
+        "verdict": "revise",
+        "confidence": 0.9,
+        "issues": [{"type": "action_granularity", "step_id": "step_1", "message": "The two independently located slots need separate actions."}],
+        "coverage": [{"requirement": "left and right slots", "step_id": "step_1", "status": "covered", "evidence": "The step names both slots."}],
+        "step_checks": [{"step_id": "step_1", "status": "pass", "notes": "The related slots remain together."}],
+        "action_checks": [{"step_id": "step_1", "status": "fail", "notes": "The plan has one action but requires two.", "required_action_count": 2}],
+    }
+    with patch("app.services.autonomous_cdsl_generation.review_modeling_plan", AsyncMock(return_value=reviewer_revise)):
+        events, progressed = asyncio.run(runner._execute_tool(
+            task_id,
+            "left and right slots",
+            state,
+            load_engine(settings),
+            "write_modeling_plan",
+            {"plan_text": "## Step 1 - Clamp slots\nCreate the left slot and right slot."},
+        ))
+
+    assert progressed is True
+    assert state["modeling_plan_status"] == "revise"
+    assert "action_granularity_issues" not in state["modeling_plan"]
+    review_event = next(payload for name, payload in events if name == "modeling_plan_review")
+    assert review_event["review"]["verdict"] == "revise"
+    assert review_event["review"]["action_checks"][0]["status"] == "fail"
+    assert [item["function"]["name"] for item in runner._author_tools(store.read_task(task_id) or {}, requirements_frozen=True, state=state)] == ["write_modeling_plan"]

backend/tests/test_sphere_add.py

@@ -22,24 +22,13 @@ class SphereAddTests(unittest.TestCase):
             "kind": "part",
             "part_id": "sphere_test",
             "meta": {"unit": "mm"},
-            "geometry": {
-                "sketches": [{
-                    "id": "sphere_locator",
-                    "workplane": {
-                        "origin_mm": [0, 0, 0],
-                        "x_dir": [1, 0, 0],
-                        "normal": [0, 0, 1],
-                    },
-                    "profile": {"type": "circle", "radius_mm": 1.0},
-                }],
-            },
+            "geometry": {"sketches": []},
             "features": [{
                 "id": "sphere",
                 "atomic_id": "sphere_add",
                 "depends_on": [],
                 "name": "Test sphere",
                 "params": {"radius_mm": 2.5, "center_mm": [3.0, -4.0, 5.0]},
-                "sketch_id": "sphere_locator",
             }],
         }
 

backend/tests/test_visual_review.py

@@ -15,7 +15,7 @@ import httpx
 ROOT = Path(__file__).resolve().parents[2]
 sys.path.insert(0, str(ROOT / "backend"))
 
-from app.services.visual_review import VisualReviewError, review_candidate_batch, review_checkpoint  # noqa: E402
+from app.services.visual_review import VisualReviewError, review_candidate_batch, review_checkpoint, review_modeling_plan, _unsupported_operation_mentions  # noqa: E402
 from app.settings import ProviderConfig, ProviderModel, Settings  # noqa: E402
 
 
@@ -109,6 +109,99 @@ def _candidate_response(*, verdict: str = "accept", batch_goal_status: str = "ac
 
 
 class VisualReviewCompatibilityTests(unittest.TestCase):
+    def test_plan_review_detects_unsupported_operation_mentions(self) -> None:
+        result = {
+            "issues": [{"type": "guidance", "step_id": "step_1", "message": "Prefer extrude_add; pattern_circular is unavailable."}],
+            "coverage": [],
+            "step_checks": [],
+            "action_checks": [],
+        }
+        self.assertEqual(
+            _unsupported_operation_mentions(result, [{"atomic_id": "extrude_add_blind"}, {"atomic_id": "extrude_add_two_sided"}]),
+            ["extrude_add", "pattern_circular"],
+        )
+        self.assertEqual(
+            _unsupported_operation_mentions(
+                {"issues": [{"message": "A cut can use extrude_cut."}], "coverage": [], "step_checks": [], "action_checks": []},
+                [{"atomic_id": "extrude_cut_blind"}],
+            ),
+            ["extrude_cut"],
+        )
+
+    def test_plan_review_records_unsupported_operation_without_rejecting_semantic_plan(self) -> None:
+        arguments = {
+            "verdict": "pass",
+            "confidence": 0.9,
+            "issues": [{"type": "guidance", "step_id": "step_1", "message": "Prefer extrude_add for the boss."}],
+            "coverage": [{"requirement": "one connected plate", "step_id": "step_1", "status": "covered", "evidence": "The base is described."}],
+            "step_checks": [{"step_id": "step_1", "status": "pass", "notes": "The step is ordered."}],
+            "action_checks": [{"step_id": "step_1", "status": "pass", "notes": "One base feature is one action.", "required_action_count": 1}],
+        }
+        response = _Response(200, {"choices": [{"message": {"tool_calls": [{"function": {
+            "name": "review_modeling_plan", "arguments": json.dumps(arguments),
+        }}]}}]})
+        with tempfile.TemporaryDirectory() as temporary:
+            with patch("app.services.visual_review.httpx.AsyncClient", return_value=_Client([response])):
+                result = asyncio.run(review_modeling_plan(
+                    settings(Path(temporary)),
+                    source_requirements="Build a plate.",
+                    requirements="# Frozen",
+                    checklist=["one connected plate"],
+                    plan={"steps": [{"step_id": "step_1", "actions": [{"action_id": "step_1_action_1"}]}]},
+                    runtime_operations=[{"atomic_id": "extrude_add_blind"}, {"atomic_id": "extrude_add_two_sided"}],
+                ))
+        self.assertEqual(result["verdict"], "pass")
+        self.assertEqual(result["unsupported_operations"], ["extrude_add"])
+        self.assertTrue(result["review_warnings"])
+
+    def test_plan_reviewer_cannot_pass_a_failed_action_check(self) -> None:
+        arguments = {
+            "verdict": "pass",
+            "confidence": 0.9,
+            "issues": [],
+            "coverage": [{"requirement": "left and right slots", "step_id": "step_1", "status": "covered", "evidence": "Both are named."}],
+            "step_checks": [{"step_id": "step_1", "status": "pass", "notes": "The related slots remain in one step."}],
+            "action_checks": [{"step_id": "step_1", "status": "fail", "notes": "Left and right need separate actions.", "required_action_count": 2}],
+        }
+        response = _Response(200, {"choices": [{"message": {"tool_calls": [{"function": {
+            "name": "review_modeling_plan", "arguments": json.dumps(arguments),
+        }}]}}]})
+        with tempfile.TemporaryDirectory() as temporary:
+            with patch("app.services.visual_review.httpx.AsyncClient", return_value=_Client([response, response])):
+                with self.assertRaisesRegex(VisualReviewError, "every action check passes"):
+                    asyncio.run(review_modeling_plan(
+                        settings(Path(temporary)),
+                        source_requirements="Cut left and right slots.",
+                        requirements="# Frozen",
+                        checklist=["left and right slots"],
+                        plan={"steps": [{"step_id": "step_1", "actions": [{"action_id": "step_1_action_1"}]}]},
+                        runtime_operations=[{"atomic_id": "extrude_cut_blind"}],
+                    ))
+
+    def test_plan_reviewer_required_action_count_is_checked_against_plan_structure(self) -> None:
+        arguments = {
+            "verdict": "pass",
+            "confidence": 0.9,
+            "issues": [],
+            "coverage": [{"requirement": "two slots", "step_id": "step_1", "status": "covered", "evidence": "Both targets are described."}],
+            "step_checks": [{"step_id": "step_1", "status": "pass", "notes": "Ordering is coherent."}],
+            "action_checks": [{"step_id": "step_1", "status": "pass", "notes": "Two actions are required.", "required_action_count": 2}],
+        }
+        response = _Response(200, {"choices": [{"message": {"tool_calls": [{"function": {
+            "name": "review_modeling_plan", "arguments": json.dumps(arguments),
+        }}]}}]})
+        with tempfile.TemporaryDirectory() as temporary:
+            with patch("app.services.visual_review.httpx.AsyncClient", return_value=_Client([response, response])):
+                with self.assertRaisesRegex(VisualReviewError, "required_action_count exceeds"):
+                    asyncio.run(review_modeling_plan(
+                        settings(Path(temporary)),
+                        source_requirements="Create two slots.",
+                        requirements="# Frozen",
+                        checklist=["two slots"],
+                        plan={"steps": [{"step_id": "step_1", "actions": [{"action_id": "only_action"}]}]},
+                        runtime_operations=[{"atomic_id": "extrude_cut_blind"}],
+                    ))
+
     def _review(self, root: Path, client: _Client, *, source_requirements: str = "") -> dict[str, object]:
         image = root / "iso.png"
         image.write_bytes(b"png")

frontend/package.json

@@ -16,6 +16,7 @@
     "@radix-ui/react-collapsible": "^1.1.20",
     "@radix-ui/react-dropdown-menu": "^2.1.24",
     "@radix-ui/react-slider": "^1.4.7",
+    "@types/react-syntax-highlighter": "^15.5.13",
     "ai": "7.0.37",
     "animejs": "^4.5.0",
     "clsx": "^2.1.1",
@@ -23,6 +24,10 @@
     "next": "16.2.6",
     "react": "19.2.4",
     "react-dom": "19.2.4",
+    "react-json-view-lite": "^2.5.0",
+    "react-markdown": "^10.1.0",
+    "react-syntax-highlighter": "^16.1.1",
+    "remark-gfm": "^4.0.1",
     "tailwind-merge": "^3.6.0",
     "three": "0.160.0",
     "three-mesh-bvh": "^0.8.0"

frontend/src/app/api/chat/route.ts

@@ -56,14 +56,31 @@ export async function POST(request: NextRequest) {
   }
   const stream = createUIMessageStream({
     execute: async ({ writer }) => {
-      const textId = `assistant_${Date.now()}`;
-      writer.write({ type: "start", messageId: textId });
-      writer.write({ type: "text-start", id: textId });
+      const messageId = `assistant_${Date.now()}`;
+      writer.write({ type: "start", messageId });
+      let textPartIndex = 0;
+      let textId: string | null = null;
+      let sequence = 0;
       for await (const item of parseSse(upstream)) {
-        const chunk = backendEventToUiChunk(item, textId);
+        if (item.event === "done") continue;
+        sequence += 1;
+        if (item.event === "text_delta") {
+          if (!textId) {
+            textId = `${messageId}_text_${textPartIndex++}`;
+            writer.write({ type: "text-start", id: textId });
+          }
+          const chunk = backendEventToUiChunk(item, textId, sequence);
+          if (chunk) writer.write(chunk);
+          continue;
+        }
+        if (textId) {
+          writer.write({ type: "text-end", id: textId });
+          textId = null;
+        }
+        const chunk = backendEventToUiChunk(item, `${messageId}_text_${textPartIndex}`, sequence);
         if (chunk) writer.write(chunk);
       }
-      writer.write({ type: "text-end", id: textId });
+      if (textId) writer.write({ type: "text-end", id: textId });
       writer.write({ type: "finish", finishReason: "stop" });
     },
   });

frontend/src/app/api/tasks/[taskId]/route.ts

@@ -9,3 +9,10 @@ export async function GET(_request: NextRequest, context: { params: Promise<{ ta
   if (!response.ok) return NextResponse.json({ error: await readBackendError(response) }, { status: response.status });
   return NextResponse.json(await response.json());
 }
+
+export async function DELETE(_request: NextRequest, context: { params: Promise<{ taskId: string }> }) {
+  const { taskId } = await context.params;
+  const response = await backendFetch(`/v1/tasks/${encodeURIComponent(taskId)}`, { method: "DELETE" });
+  if (!response.ok) return NextResponse.json({ error: await readBackendError(response) }, { status: response.status });
+  return NextResponse.json(await response.json());
+}

frontend/src/app/globals.css

@@ -395,17 +395,6 @@ button:disabled {
 .studio-main { display: flex; min-height: 0; flex: 1; }
 .agent-pane { display: flex; width: 420px; min-width: 0; min-height: 0; flex: 0 0 auto; flex-direction: column; border-right: 1px solid var(--ui-border); background: var(--ui-panel); }
 .preview-pane { position: relative; min-width: 0; min-height: 0; flex: 1; background: var(--ui-viewer-bg); }
-.generation-status { position: absolute; z-index: 30; top: 12px; right: 12px; width: min(260px, calc(100% - 24px)); max-height: min(42vh, 360px); overflow: auto; border: 1px solid var(--ui-border); border-radius: 6px; background: var(--ui-glass-popover); box-shadow: var(--ui-shadow-soft); backdrop-filter: blur(12px); color: var(--ui-text); padding: 10px; font-size: 12px; }
-.generation-status-heading { display: flex; align-items: center; gap: 6px; color: var(--ui-text-strong); font-weight: 650; }
-.generation-status-active { margin: 6px 0 8px; color: var(--ui-accent-text); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
-.generation-status ul { display: grid; gap: 4px; margin: 0; padding: 0; list-style: none; }
-.generation-status li { display: flex; justify-content: space-between; gap: 8px; border-top: 1px solid var(--ui-border-muted); padding-top: 4px; color: var(--ui-text-muted); }
-.generation-status li[data-status="completed"] small { color: var(--ui-success); }
-.generation-status li[data-status="planned"] small { color: var(--ui-text-subtle); }
-.generation-status li[data-status="failed"] small { color: var(--ui-error); }
-.generation-status details { margin: 8px 0; border-top: 1px solid var(--ui-border-muted); padding-top: 6px; }
-.generation-status summary { cursor: pointer; color: var(--ui-text-strong); }
-.generation-status pre { margin: 6px 0 0; max-height: 132px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; font: 11px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--ui-text-muted); }
 .agent-thread-shell, .thread-root { display: flex; min-height: 0; flex: 1; flex-direction: column; }
 .agent-thread-shell { position: relative; }
 .spin { animation: ui-spin 900ms linear infinite; }
@@ -421,6 +410,7 @@ button:disabled {
 .assistant-row .message-role svg { color: var(--ui-accent); }
 .message-content { min-width: 0; color: var(--ui-text); }
 .message-text { margin: 0; font-size: 12px; line-height: 1.65; overflow-wrap: anywhere; white-space: pre-wrap; }
+.message-text .markdown-document { margin-top: 0; border-left: 0; padding: 0; font-size: inherit; }
 .message-request-error { display: flex; align-items: flex-start; gap: 7px; margin-top: 8px; color: var(--ui-error-text); font-size: 11px; line-height: 1.45; }
 .message-request-error svg { flex: 0 0 auto; margin-top: 1px; }
 .thread-empty { color: var(--ui-text-muted); font-size: 12px; line-height: 1.55; padding: 2px 0 14px; }
@@ -448,7 +438,29 @@ button:disabled {
 .cad-message-heading { display: flex; min-width: 0; align-items: center; gap: 7px; color: var(--ui-text); font-size: 12px; font-weight: 600; }
 .cad-message-heading svg { flex: 0 0 auto; color: var(--ui-accent); }
 .cad-status-label { color: var(--ui-text-subtle); font-size: 10px; font-weight: 500; text-transform: uppercase; }
+.cad-tool-name { overflow: hidden; max-width: 46%; border: 1px solid var(--ui-border-muted); border-radius: 3px; background: var(--ui-control-bg); color: var(--ui-accent-text); font: 10px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 1px 4px; text-overflow: ellipsis; white-space: nowrap; }
 .cad-message-copy { margin-left: 21px; color: var(--ui-text-muted); font-size: 11px; line-height: 1.45; overflow-wrap: anywhere; }
+.cad-event-details { margin: 4px 0 0 21px; color: var(--ui-text-subtle); font-size: 10px; }
+.cad-event-details summary { cursor: pointer; width: fit-content; }
+.cad-event-details pre { max-height: 180px; overflow: auto; margin: 4px 0 0; border-left: 2px solid var(--ui-border-muted); padding-left: 8px; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--ui-text-muted); font: 10px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; }
+.cad-event-details ul { display: grid; gap: 3px; margin: 4px 0 0; padding-left: 14px; color: var(--ui-text-muted); line-height: 1.4; }
+.cad-document-details { margin-top: 7px; }
+.markdown-document { margin-top: 7px; border-left: 2px solid var(--ui-accent-border); padding: 2px 0 2px 10px; color: var(--ui-text); font-size: 11px; line-height: 1.65; }
+.markdown-document > :first-child { margin-top: 0; }.markdown-document > :last-child { margin-bottom: 0; }
+.markdown-document h1, .markdown-document h2, .markdown-document h3 { margin: 12px 0 5px; color: var(--ui-text-strong); line-height: 1.3; }
+.markdown-document h1 { font-size: 14px; }.markdown-document h2 { font-size: 13px; }.markdown-document h3 { font-size: 12px; }
+.markdown-document p { margin: 5px 0; }.markdown-document ul, .markdown-document ol { display: block; margin: 5px 0; padding-left: 20px; color: var(--ui-text); }
+.markdown-document li { margin: 2px 0; }.markdown-document li::marker { color: var(--ui-accent); }
+.markdown-document input[type="checkbox"] { margin: 0 6px 0 0; accent-color: var(--ui-accent); }
+.markdown-document blockquote { margin: 7px 0; border-left: 2px solid var(--ui-border-strong); padding-left: 9px; color: var(--ui-text-muted); }
+.markdown-document a { color: var(--ui-link); text-decoration: underline; text-underline-offset: 2px; }
+.markdown-document table { width: 100%; margin: 7px 0; border-collapse: collapse; font-size: 10px; }.markdown-document th, .markdown-document td { border: 1px solid var(--ui-border); padding: 5px 7px; text-align: left; }.markdown-document th { background: var(--ui-panel-raised); color: var(--ui-text-strong); }
+.inline-code { border: 1px solid var(--ui-border-muted); border-radius: 3px; background: var(--ui-control-bg); color: var(--ui-accent-text); padding: 1px 4px; font: 0.92em/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; }
+.code-viewer { position: relative; max-width: 100%; margin: 7px 0; overflow: auto; border: 1px solid var(--ui-border-strong); border-radius: 4px; background: #171a1d; color: #e8e8e3; }
+.code-viewer pre { max-height: 320px; margin: 0 !important; border: 0; white-space: pre; font-size: 10px; line-height: 1.5; }
+.code-language { position: sticky; left: 100%; top: 0; z-index: 1; display: block; width: max-content; margin: 5px 6px -18px auto; color: #969b9f; font-size: 9px; text-transform: uppercase; }
+.json-tree { max-height: 260px; overflow: auto; margin-top: 6px; border: 1px solid var(--ui-border); border-radius: 4px; background: var(--ui-control-bg); padding: 7px; color: var(--ui-text); font: 10px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
+.json-tree .json-view--property { color: var(--ui-accent-text); }.json-tree .json-view--string { color: var(--ui-success-text); }.json-tree .json-view--number, .json-tree .json-view--boolean { color: var(--ui-secondary-text); }
 .cad-progress.is-error .cad-message-heading, .cad-progress.is-error .cad-message-heading svg, .cad-error .cad-message-heading, .cad-error .cad-message-heading svg { color: var(--ui-error-text); }
 .cad-result { margin-top: 12px; }
 .cad-result-title { margin-left: 21px; color: var(--ui-accent-text); font-size: 12px; font-weight: 600; line-height: 1.45; overflow-wrap: anywhere; }

frontend/src/components/agent-studio.tsx

@@ -165,6 +165,30 @@ export function AgentStudio() {
     if (error.stage === "generation") setTaskRunning(false);
   }, []);
 
+  const handleCancel = useCallback(() => {
+    setTaskRunning(false);
+    setLastError("正在停止 CAD 任务...");
+    void (async () => {
+      let taskId = selectedTaskId;
+      if (!taskId && conversationId) {
+        const conversationResponse = await fetch(`/api/conversations/${encodeURIComponent(conversationId)}`, { cache: "no-store" });
+        if (conversationResponse.ok) {
+          const conversation = await conversationResponse.json() as ConversationRecord;
+          taskId = conversation.current_task_id || "";
+        }
+      }
+      if (!taskId) throw new Error("尚未取得运行中的任务编号，请稍后重试");
+      const response = await fetch(`/api/tasks/${encodeURIComponent(taskId)}`, { method: "DELETE" });
+      if (!response.ok) {
+        const payload = await response.json().catch(() => ({})) as { error?: string };
+        throw new Error(payload.error || "停止 CAD 任务失败");
+      }
+      setLastError("CAD 任务已停止");
+    })().catch((error) => {
+      setLastError(error instanceof Error ? error.message : "停止 CAD 任务失败");
+    });
+  }, [conversationId, selectedTaskId]);
+
   const handleUpload = useCallback(async (files: FileList | null) => {
     const selectedFiles = Array.from(files || []);
     if (!selectedFiles.length) return;
@@ -247,6 +271,7 @@ export function AgentStudio() {
         uploading={uploading}
         uploadError={uploadError}
         onUpload={handleUpload}
+        onCancel={handleCancel}
         theme={theme}
         onToggleTheme={toggleTheme}
         providerId={providerId}
@@ -257,7 +282,6 @@ export function AgentStudio() {
         onCadError={handleError}
         onSelectionChange={setViewerSelection}
         taskRunning={taskRunning}
-        taskRecord={taskRecord}
       />
     </AgentRuntime>
   );
@@ -478,6 +502,7 @@ function StudioShell({
   uploading,
   uploadError,
   onUpload,
+  onCancel,
   theme,
   onToggleTheme,
   providerId,
@@ -488,7 +513,6 @@ function StudioShell({
   onCadError,
   onSelectionChange,
   taskRunning,
-  taskRecord,
 }: {
   config: BackendConfig | null;
   cadResult: CadResult | null;
@@ -497,6 +521,7 @@ function StudioShell({
   uploading: boolean;
   uploadError: string;
   onUpload: (files: FileList | null) => void;
+  onCancel: () => void;
   theme: "light" | "dark";
   onToggleTheme: () => void;
   providerId: string;
@@ -507,7 +532,6 @@ function StudioShell({
   onCadError: (error: CadError) => void;
   onSelectionChange: (selection: ViewerSelectionContext | null) => void;
   taskRunning: boolean;
-  taskRecord: TaskRecord | null;
 }) {
   const running = useAuiState((state) => state.thread.isRunning) || taskRunning;
   const provider = config?.providers.find((item) => item.id === providerId);
@@ -531,9 +555,8 @@ function StudioShell({
       {!config?.configured ? <div className="config-warning"><AlertCircle size={16} /><span>未配置模型环境变量，聊天会保留诊断但不会生成虚假模型。</span></div> : null}
       {config?.autonomous_generation && !config.review_configured ? <div className="config-warning"><AlertCircle size={16} /><span>最终视觉复核未配置，任务在最终发布前会停止：{config.review_error || "请配置独立视觉模型。"}</span></div> : null}
       <div className="studio-main">
-        <aside className="agent-pane"><AgentThread attachments={attachments} uploading={uploading} uploadError={uploadError} taskRunning={taskRunning} onUpload={onUpload} /></aside>
+        <aside className="agent-pane"><AgentThread attachments={attachments} uploading={uploading} uploadError={uploadError} taskRunning={taskRunning} onUpload={onUpload} onCancel={onCancel} /></aside>
         <section className="preview-pane">
-          <GenerationStatus task={taskRecord} />
           <CadViewerPreview result={cadResult} isGenerating={running} lastError={lastError} theme={theme} onError={handleViewerError} onSelectionChange={onSelectionChange} />
         </section>
       </div>
@@ -541,24 +564,6 @@ function StudioShell({
   );
 }
 
-function GenerationStatus({ task }: { task: TaskRecord | null }) {
-  if (task?.lifecycle !== "running") return null;
-  const agent = task.agent_state;
-  const events = agent?.recent_events || [];
-  return (
-    <aside className="generation-status" aria-live="polite">
-      <div className="generation-status-heading"><Loader2 className="spin" size={14} /><span>自主建模</span></div>
-      <div className="generation-status-active">{task.active_candidate_id ? `候选 ${task.active_candidate_id}` : task.active_revision || "正在编写冻结需求"}</div>
-      {task.requirements_markdown ? <details open><summary>需求文档</summary><pre>{task.requirements_markdown}</pre></details> : null}
-      {task.completion_checklist_markdown ? <details open><summary>完成清单</summary><pre>{task.completion_checklist_markdown}</pre></details> : null}
-      {agent?.completion_ledger?.items?.length ? <ul className="completion-ledger">{agent.completion_ledger.items.map((item, index) => <li key={`${item.item || "item"}-${index}`}><span>{item.status === "complete" ? "完成" : item.status === "uncertain" ? "待确认" : "缺失"}</span><small>{item.item}{item.evidence ? `：${item.evidence}` : ""}</small></li>)}</ul> : null}
-      {agent?.last_review ? <div className="generation-status-active">步骤审查：{agent.last_review.decision || "已记录"}</div> : null}
-      {agent?.last_diagnostic ? <div className="generation-status-active">{agent.last_diagnostic}</div> : null}
-      {events.length ? <ul>{events.slice(-6).map((item, index) => <li key={`${item.at || "event"}-${index}`}><span>{item.kind || item.tool || "工具"}</span><small>{item.message || "已更新"}</small></li>)}</ul> : null}
-    </aside>
-  );
-}
-
 function StudioLoading() {
   return (
     <main className="boot-screen">

frontend/src/components/agent-thread.tsx

@@ -2,16 +2,17 @@
 
 import { Bot, Check, CircleAlert, FileImage, FileText, Loader2, MessageSquare, Paperclip, Send, Sparkles, Upload } from "lucide-react";
 import { useRef, useState, type ChangeEvent, type DragEvent } from "react";
-import { ComposerPrimitive, MessagePrimitive, ThreadPrimitive, useAuiState } from "@assistant-ui/react";
+import { ComposerPrimitive, MessagePrimitive, ThreadPrimitive, useAui, useAuiState } from "@assistant-ui/react";
 import type { CadAttachment } from "@/lib/cad-types";
 import { CadErrorPart, CadProgressPart, CadResultPart, TextPart } from "./cad-message-parts";
 
-export function AgentThread({ attachments, uploading, uploadError, taskRunning = false, onUpload }: {
+export function AgentThread({ attachments, uploading, uploadError, taskRunning = false, onUpload, onCancel }: {
   attachments: CadAttachment[];
   uploading: boolean;
   uploadError: string;
   taskRunning?: boolean;
   onUpload: (files: FileList | null) => void;
+  onCancel?: () => void;
 }) {
   const fileInput = useRef<HTMLInputElement>(null);
   const dragDepth = useRef(0);
@@ -65,7 +66,7 @@ export function AgentThread({ attachments, uploading, uploadError, taskRunning =
           </ThreadPrimitive.Empty>
           <div className="message-list"><ThreadPrimitive.Messages components={{ UserMessage, AssistantMessage }} /></div>
         </ThreadPrimitive.Viewport>
-        <Composer fileInput={fileInput} uploading={uploading} taskRunning={taskRunning} onUpload={onUpload} />
+        <Composer fileInput={fileInput} uploading={uploading} taskRunning={taskRunning} onUpload={onUpload} onCancel={onCancel} />
       </ThreadPrimitive.Root>
       {isDraggingFiles ? <div className="file-drop-overlay" role="status" aria-live="polite"><Upload size={24} /><span>拖放文件上传</span></div> : null}
     </div>
@@ -104,8 +105,14 @@ function AssistantMessage() {
   );
 }
 
-function Composer({ fileInput, uploading, taskRunning = false, onUpload }: { fileInput: React.RefObject<HTMLInputElement | null>; uploading: boolean; taskRunning?: boolean; onUpload: (files: FileList | null) => void }) {
-  const running = useAuiState((state) => state.thread.isRunning) || taskRunning;
+function Composer({ fileInput, uploading, taskRunning = false, onUpload, onCancel }: { fileInput: React.RefObject<HTMLInputElement | null>; uploading: boolean; taskRunning?: boolean; onUpload: (files: FileList | null) => void; onCancel?: () => void }) {
+  const aui = useAui();
+  const chatRunning = useAuiState((state) => state.thread.isRunning);
+  const running = chatRunning || taskRunning;
+  const handleCancel = () => {
+    onCancel?.();
+    if (chatRunning) aui.thread().cancelRun();
+  };
   const handleFileChange = (event: ChangeEvent<HTMLInputElement>) => {
     if (event.currentTarget.files?.length) onUpload(event.currentTarget.files);
     event.currentTarget.value = "";
@@ -119,7 +126,7 @@ function Composer({ fileInput, uploading, taskRunning = false, onUpload }: { fil
           <span><Check size={14} aria-hidden="true" /> Enter 发送，Shift + Enter 换行</span>
           <div className="composer-actions">
             {running ? (
-              <span className="text-[11px] text-[var(--ui-text-subtle)]"><Loader2 className="mr-1 inline spin" size={13} aria-hidden="true" />生成中</span>
+              <button type="button" className="composer-command composer-cancel" title="停止生成" aria-label="停止生成" onClick={handleCancel}><Loader2 className="spin" size={14} aria-hidden="true" />停止</button>
             ) : (
               <>
                 <button type="button" className="composer-command composer-upload" title="上传图片或文档" aria-label="上传图片或文档" aria-busy={uploading || undefined} disabled={uploading} onClick={() => fileInput.current?.click()}>{uploading ? <Loader2 className="spin" size={14} aria-hidden="true" /> : <Paperclip size={14} aria-hidden="true" />}上传</button>

frontend/src/components/cad-message-parts.tsx

@@ -1,32 +1,48 @@
 "use client";
 
-import { AlertTriangle, Box, Check, Download, Loader2 } from "lucide-react";
+import { AlertTriangle, Box, Check, Download, Eye, FileCheck, Loader2, RotateCcw, Search, Wrench } from "lucide-react";
 import { encodeArtifactUrl } from "@/lib/cad-artifacts";
 import type { CadError, CadProgress, CadResult } from "@/lib/cad-types";
+import { JsonTree, MarkdownDocument } from "./rich-content";
 
 export function TextPart({ text }: { text: string }) {
   if (!text.trim()) return null;
-  return <p className="message-text">{text}</p>;
+  return <div className="message-text"><MarkdownDocument>{text}</MarkdownDocument></div>;
 }
 
 export function CadProgressPart({ data }: { data: CadProgress }) {
-  if (data.step === "agent_stream") return null;
   const status = String(data.status || "").toLowerCase();
   const isRunning = status === "running";
   const isError = status === "error";
   const statusLabel = isRunning ? "进行中" : isError ? "失败" : status === "success" ? "完成" : data.status;
+  const Icon = data.step === "tool_call" ? Wrench : data.step.includes("review") || data.step === "final_review" ? Eye : data.step === "rollback" ? RotateCcw : data.step.includes("requirements") || data.step.includes("checklist") ? FileCheck : data.step.includes("diagnostic") ? Search : isError ? AlertTriangle : Check;
+  const evidence = data.evidence || (Array.isArray(data.review?.evidence) ? data.review.evidence.map(String) : []);
+  const documentTitle = data.step === "requirements_document" ? "冻结需求内容" : data.step === "completion_checklist" ? "完成清单内容" : "";
+  const documentMarkdown = data.step === "requirements_document" ? withoutRequirementsFilename(data.markdown || "") : data.markdown || "";
   return (
     <div className={`cad-message cad-progress${isError ? " is-error" : ""}`} role="status" aria-live="polite">
       <div className="cad-message-heading">
-        {isRunning ? <Loader2 className="spin" size={14} aria-hidden="true" /> : isError ? <AlertTriangle size={14} aria-hidden="true" /> : <Check size={14} aria-hidden="true" />}
+        {isRunning ? <Loader2 className="spin" size={14} aria-hidden="true" /> : <Icon size={14} aria-hidden="true" />}
         <span>{data.label || data.step}</span>
+        {data.tool ? <code className="cad-tool-name">{data.tool}</code> : null}
         <span className="cad-status-label">{statusLabel}</span>
       </div>
       {data.message ? <div className="cad-message-copy">{data.message}</div> : null}
+      {documentMarkdown ? <details className="cad-event-details cad-document-details" open={data.step === "requirements_document"}><summary>{documentTitle || "文档内容"}</summary><MarkdownDocument>{documentMarkdown}</MarkdownDocument></details> : null}
+      {data.arguments ? <details className="cad-event-details"><summary>调用参数</summary><JsonTree data={data.arguments} /></details> : null}
+      {data.result !== undefined ? <details className="cad-event-details"><summary>执行结果</summary><JsonTree data={data.result} /></details> : null}
+      {evidence.length ? <details className="cad-event-details"><summary>证据 ({evidence.length})</summary><ul>{evidence.map((item, index) => <li key={`${item}-${index}`}>{item}</li>)}</ul></details> : null}
     </div>
   );
 }
 
+function withoutRequirementsFilename(markdown: string) {
+  return markdown
+    .replace(/^\s*#{1,6}\s*`?requirements\.md`?\s*\n+/i, "")
+    .replace(/^\s*`?requirements\.md`?\s*\n+/i, "")
+    .trimStart();
+}
+
 export function CadResultPart({ data }: { data: CadResult }) {
   const downloads: Array<[string, string]> = data.checkpoint ? [] : [
     ["STEP", data.stepPath],

frontend/src/components/rich-content.tsx

@@ -0,0 +1,57 @@
+"use client";
+
+import type { ComponentPropsWithoutRef, ReactNode } from "react";
+import ReactMarkdown from "react-markdown";
+import remarkGfm from "remark-gfm";
+import { JsonView, collapseAllNested } from "react-json-view-lite";
+import "react-json-view-lite/dist/index.css";
+import { PrismAsync as SyntaxHighlighter } from "react-syntax-highlighter";
+import { oneDark } from "react-syntax-highlighter/dist/esm/styles/prism";
+
+export function MarkdownDocument({ children }: { children: string }) {
+  return (
+    <div className="markdown-document">
+      <ReactMarkdown
+        remarkPlugins={[remarkGfm]}
+        components={{
+          a: ({ children: label, ...props }) => <a {...props} target="_blank" rel="noreferrer">{label}</a>,
+          code: MarkdownCode,
+          pre: ({ children }) => <>{children}</>,
+        }}
+      >
+        {children}
+      </ReactMarkdown>
+    </div>
+  );
+}
+
+function MarkdownCode({ className, children, ...props }: ComponentPropsWithoutRef<"code"> & { children?: ReactNode }) {
+  const language = /language-([\w-]+)/.exec(className || "")?.[1];
+  const value = String(children || "").replace(/\n$/, "");
+  if (!language && !value.includes("\n")) return <code className="inline-code" {...props}>{children}</code>;
+  return <CodeViewer code={value} language={language || "text"} />;
+}
+
+export function CodeViewer({ code, language = "text" }: { code: string; language?: string }) {
+  return (
+    <div className="code-viewer">
+      <span className="code-language">{language}</span>
+      <SyntaxHighlighter language={language} style={oneDark} wrapLongLines customStyle={{ margin: 0, background: "transparent", padding: "12px" }}>
+        {code}
+      </SyntaxHighlighter>
+    </div>
+  );
+}
+
+export function JsonTree({ data }: { data: unknown }) {
+  const value = isJsonContainer(data) ? data : { value: data };
+  return (
+    <div className="json-tree">
+      <JsonView data={value} shouldExpandNode={(level) => level < 1 || collapseAllNested(level)} clickToExpandNode />
+    </div>
+  );
+}
+
+function isJsonContainer(value: unknown): value is Record<string, unknown> | unknown[] {
+  return Boolean(value && typeof value === "object");
+}

frontend/src/lib/cad-stream.test.ts

@@ -42,6 +42,56 @@ test("maps a rejected independent candidate review into a blocking progress stat
   });
 });
 
+test("maps a modeling plan revision request into a blocking progress state", () => {
+  const chunk = backendEventToUiChunk({
+    event: "modeling_plan_review",
+    data: { taskId: "cad_abc", review: { verdict: "revise", issues: [{ message: "split unrelated finish" }] } },
+  }, "text_1");
+  assert.equal(chunk?.type, "data-cad-progress");
+  assert.equal("data" in chunk! ? (chunk.data as { label?: string }).label : null, "计划独立复核");
+  assert.equal("data" in chunk! ? (chunk.data as { status?: string }).status : null, "error");
+});
+
+test("keeps a server-verified plan skip visible in the timeline", () => {
+  const chunk = backendEventToUiChunk({
+    event: "plan_step_skipped",
+    data: {
+      taskId: "cad_abc",
+      planStepId: "step_6",
+      nextPlanStepId: "",
+      evidenceRef: "completion_ledger:rev_008",
+      status: "success",
+      message: "The current revision already satisfies this plan step.",
+    },
+  }, "text_1");
+  assert.equal(chunk?.type, "data-cad-progress");
+  assert.equal("data" in chunk! ? (chunk.data as { label?: string }).label : null, "计划步骤已满足");
+  assert.equal("data" in chunk! ? (chunk.data as { status?: string }).status : null, "success");
+});
+
+test("gives repeated tool events unique ordered parts", () => {
+  const first = backendEventToUiChunk({ event: "tool_call", data: { taskId: "cad_abc", tool: "inspect_model", status: "running" } }, "text_1", 4);
+  const second = backendEventToUiChunk({ event: "tool_call", data: { taskId: "cad_abc", tool: "inspect_model", status: "success" } }, "text_1", 5);
+  assert.notEqual(first?.id, second?.id);
+  assert.equal("data" in first! ? (first.data as { sequence?: number }).sequence : null, 4);
+  assert.equal("data" in second! ? (second.data as { sequence?: number }).sequence : null, 5);
+});
+
+test("reuses an invocation id so tool completion updates its running card", () => {
+  const running = backendEventToUiChunk({ event: "tool_call", data: { taskId: "cad_abc", eventId: "call_1", invocationId: "call_1", tool: "submit_cdsl_fragment", status: "running" } }, "text_1", 4);
+  const complete = backendEventToUiChunk({ event: "tool_call", data: { taskId: "cad_abc", eventId: "call_1", invocationId: "call_1", tool: "submit_cdsl_fragment", status: "success" } }, "text_1", 5);
+  assert.equal(running?.id, complete?.id);
+});
+
+test("keeps frozen requirement markdown visible in the timeline", () => {
+  const chunk = backendEventToUiChunk({
+    event: "requirements_document",
+    data: { taskId: "cad_abc", status: "frozen", markdown: "# 冻结需求\n\n- 创建底座" },
+  }, "text_1", 2);
+  assert.equal(chunk?.type, "data-cad-progress");
+  assert.equal("data" in chunk! ? (chunk.data as { markdown?: string }).markdown : null, "# 冻结需求\n\n- 创建底座");
+});
+
 test("restores the latest successful task revision for the viewer", () => {
   const result = latestSuccessfulResult({
     task_id: "cad_abc",

frontend/src/lib/cad-stream.ts

@@ -8,38 +8,58 @@ export type BackendSseEvent = {
 export function backendEventToUiChunk(
   item: BackendSseEvent,
   textId: string,
-): UIMessageChunk | null {
+  sequence = 0,
+): (UIMessageChunk & { id?: string }) | null {
   if (item.event === "text_delta") {
     return { type: "text-delta", id: textId, delta: String(item.data.text || "") };
   }
   if (item.event === "progress") {
     return {
       type: "data-cad-progress",
-      id: `progress_${String(item.data.step || Date.now())}`,
-      data: item.data,
+      id: `progress_${String(item.data.taskId || "task")}_${sequence}`,
+      data: { ...item.data, sequence },
     };
   }
-  if (["requirements_document", "completion_checklist", "completion_audit", "agent_thinking", "tool_call", "candidate_result", "candidate_review", "geometry_diagnostic", "geometry_conclusion", "step_review", "checkpoint", "rollback", "final_review", "task_terminal"].includes(item.event)) {
+  if (["requirements_document", "completion_checklist", "completion_audit", "modeling_plan", "modeling_plan_review", "plan_step_skipped", "agent_thinking", "tool_call", "candidate_result", "candidate_review", "geometry_diagnostic", "geometry_conclusion", "step_review", "checkpoint", "rollback", "final_review", "task_terminal"].includes(item.event)) {
     const review = item.data.review && typeof item.data.review === "object"
       ? item.data.review as Record<string, unknown>
       : null;
     const status = item.event === "task_terminal"
       ? (String(item.data.lifecycle || "") === "failed" ? "error" : "success")
-      : (item.event === "candidate_review" && String(review?.verdict || "") === "reject")
+      : (item.event === "modeling_plan_review" && String(review?.verdict || "") === "revise")
+        || (item.event === "candidate_review" && String(review?.verdict || "") === "reject")
         || (item.event === "final_review" && String(review?.verdict || "") === "repair" && Number(review?.confidence || 0) >= 0.85)
         ? "error"
       : String(item.data.status || "running");
+    const taskId = String(item.data.taskId || "task");
+    const eventId = String(item.data.eventId || `${taskId}_${sequence}_${item.event}`);
+    const metadata = sequence > 0 || item.data.eventId
+      ? {
+          eventId,
+          sequence,
+          ...(review ? { review } : {}),
+        }
+      : {};
     return {
       type: "data-cad-progress",
-      id: `${item.event}_${String(item.data.taskId || Date.now())}_${String(item.data.nodeId || "")}`,
+      id: `event_${eventId}`,
       data: { step: item.event, label: ({
-        requirements_document: "冻结需求", completion_checklist: "完成清单", completion_audit: "完成审计", agent_thinking: "建模判断", tool_call: "建模工具", candidate_result: "候选构建", candidate_review: "候选独立复核", geometry_diagnostic: "几何诊断", geometry_conclusion: "几何结论", step_review: "步骤审查", checkpoint: "构建检查点", rollback: "回滚检查点", final_review: "最终视觉复核", task_terminal: "生成任务",
-      } as Record<string, string>)[item.event], status, message: String(
-        item.data.message || item.data.reason || (review?.evidence instanceof Array ? review.evidence.join("；") : ""),
+        requirements_document: "冻结需求", completion_checklist: "完成清单", completion_audit: "完成审计", modeling_plan: "建模计划", modeling_plan_review: "计划独立复核", plan_step_skipped: "计划步骤已满足", agent_thinking: "建模判断", tool_call: "建模工具", candidate_result: "候选构建", candidate_review: "候选独立复核", geometry_diagnostic: "几何诊断", geometry_conclusion: "几何结论", step_review: "步骤审查", checkpoint: "构建检查点", rollback: "回滚检查点", final_review: "最终视觉复核", task_terminal: "生成任务",
+      } as Record<string, string>)[item.event], status, ...metadata, message: String(
+        item.data.message || item.data.reason
+        || (review?.evidence instanceof Array ? review.evidence.join("；") : "")
+        || (review?.issues instanceof Array ? review.issues.map((issue) => typeof issue === "object" && issue ? String((issue as Record<string, unknown>).message || "") : String(issue)).filter(Boolean).join("；") : ""),
       ),
-      ...(item.data.taskId ? { taskId: String(item.data.taskId) } : {}),
+      ...(item.data.taskId ? { taskId } : {}),
       ...(item.data.nodeId ? { nodeId: String(item.data.nodeId) } : {}),
       ...(item.data.lifecycle ? { lifecycle: String(item.data.lifecycle) } : {}),
+      ...(item.data.timestamp ? { timestamp: String(item.data.timestamp) } : {}),
+      ...(item.data.markdown ? { markdown: String(item.data.markdown) } : {}),
+      ...(item.data.tool ? { tool: String(item.data.tool) } : {}),
+      ...(item.data.invocationId ? { invocationId: String(item.data.invocationId) } : {}),
+      ...(item.data.arguments && typeof item.data.arguments === "object" ? { arguments: item.data.arguments as Record<string, unknown> } : {}),
+      ...(item.data.result !== undefined ? { result: item.data.result } : {}),
+      ...(Array.isArray(item.data.evidence) ? { evidence: item.data.evidence.map(String) } : {}),
       },
     };
   }

frontend/src/lib/cad-types.ts

@@ -4,9 +4,19 @@ export type CadProgress = {
   step: string;
   label: string;
   status: "running" | "success" | "error" | string;
+  eventId?: string;
+  sequence?: number;
+  timestamp?: string;
   message?: string;
+  markdown?: string;
   taskId?: string;
   nodeId?: string;
+  tool?: string;
+  invocationId?: string;
+  arguments?: Record<string, unknown>;
+  result?: unknown;
+  evidence?: string[];
+  review?: Record<string, unknown>;
   lifecycle?: "running" | "completed" | "failed" | string;
   attempt?: number;
   maxAttempts?: number;
@@ -96,12 +106,20 @@ export type TaskRecord = {
   requirements_markdown?: string | null;
   completion_checklist_path?: string;
   completion_checklist_markdown?: string | null;
+  modeling_plan_path?: string;
+  modeling_plan_review_path?: string;
+  modeling_plan_version?: number;
+  modeling_plan_markdown?: string | null;
+  modeling_plan_review?: Record<string, unknown> | null;
   agent_state?: {
     no_progress?: number;
     cycle_tool_calls?: number;
     last_diagnostic?: string;
     last_review?: { candidate_id?: string; path?: string; decision?: string; recorded_at?: string };
     last_candidate_review?: { verdict?: "accept" | "reject" | string; batch_goal?: string; batch_goal_status?: string; evidence?: string[]; recorded_at?: string };
+    modeling_plan_status?: "missing" | "pending_review" | "revise" | "approved" | "stale" | string;
+    active_plan_step_id?: string;
+    plan_step_status?: Record<string, "pending" | "complete" | string>;
     completion_ledger?: {
       verified_revision?: string;
       items?: Array<{ item?: string; status?: "complete" | "missing" | "uncertain" | string; evidence?: string }>;