The file C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   484→                status_code=status.HTTP_400_BAD_REQUEST,
   485→                detail="A feature cannot depend on itself"
   486→            )
   487→
   488→    # Detect circular dependencies
   489→    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
   490→        """Check if adding new_deps to target_id creates a cycle.
   491→
   492→        A cycle exists if any of the new dependencies eventually depend on target_id.
   493→        """
   494→        visited = set()
   495→
   496→        def would_create_cycle(fid: int) -> bool:
   497→            """Check if feature fid depends (directly or indirectly) on target_id."""
   498→            if fid == target_id:
   499→                return True  # Found a cycle back to target
   500→            if fid in visited:
   501→                return False
   502→            visited.add(fid)
   503→
   504→            # Get dependencies of this feature
   505→            deps = feature_map[fid].depends_on or [] if fid in feature_map else []
   506→            for dep_id in deps:
   507→                if would_create_cycle(dep_id):
   508→                    return True
   509→            return False
   510→
   511→        # Check each new dependency - if any of them lead back to target_id, it's a cycle
   512→        for dep_id in new_deps:
   513→            visited = set()  # Reset for each starting point
   514→            if would_create_cycle(dep_id):
   515→                return True
   516→        return False
   517→
   518→    if has_circular_dependency(feature_id, request.depends_on):
   519→        raise HTTPException(
   520→            status_code=status.HTTP_400_BAD_REQUEST,
   521→            detail="Circular dependency detected"
   522→        )

    # Detect circular dependencies
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        """
        visited = set()

        def would_create_cycle(fid: int) -> bool:
            """Check if feature fid depends (directly or indirectly) on target_id."""
            if fid == target_id:
                return True  # Found a cycle back to target
            if fid in visited:
                return False
            visited.add(fid)

            # Get dependencies of this feature
            deps = feature_map[fid].depends_on or [] if fid in feature_map else []
            for dep_id in deps:
                if would_create_cycle(dep_id):
                    return True
            return False

        # Check each new dependency - if any of them lead back to target_id, it's a cycle
        for dep_id in new_deps:
            visited = set()  # Reset for each starting point
            if would_create_cycle(dep_id):
                return True
        return False

    if has_circular_dependency(feature_id, request.depends_on):

"""
Features Router
===============

API endpoints for feature management within projects.
"""

from datetime import datetime
from typing import Optional, List

from fastapi import APIRouter, Depends, HTTPException, status, Query
from pydantic import BaseModel, Field
from sqlalchemy import select, and_
from sqlalchemy.ext.asyncio import AsyncSession

from ..database import get_db
from ..models import Project, Feature

router = APIRouter(prefix="/api/projects", tags=["features"])

# ============================================================================
# Pydantic Schemas
# ============================================================================

class FeatureResponse(BaseModel):
    """Schema for feature response."""
    id: int
    project_id: int
    priority: int
    category: str
    name: str
    description: Optional[str]
    steps: List[str]
    passes: bool
    in_progress: bool
    stalled: bool
    stall_reason: Optional[str]
    assigned_agent: Optional[str]
    depends_on: List[int] = []
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True

class FeatureListResponse(BaseModel):
    """Schema for feature list response."""
    features: List[FeatureResponse]
    count: int
    total: int

class FeatureCreate(BaseModel):
    """Schema for creating a feature."""
    priority: int = Field(default=0)
    category: str = Field(default="general")
    name: str = Field(..., min_length=1, max_length=255)
    description: Optional[str] = None
    steps: List[str] = Field(default_factory=list)
    depends_on: List[int] = Field(default_factory=list)

class FeatureUpdate(BaseModel):
    """Schema for updating a feature.

    Note: Only specific fields are allowed to be updated.
    Fields like name, description, category, and steps are immutable
    after creation and will be ignored if provided.
    """
    priority: Optional[int] = None
    passes: Optional[bool] = None
    in_progress: Optional[bool] = None
    stalled: Optional[bool] = None
    stall_reason: Optional[str] = None
    assigned_agent: Optional[str] = None
    depends_on: Optional[List[int]] = None

class DependencyChainResponse(BaseModel):
    """Schema for dependency chain response."""
    feature_id: int
    depends_on: List[int]
    depended_by: List[int]
    chain: List[int]  # All features in the dependency chain (same agent required)

class SetDependenciesRequest(BaseModel):
    """Schema for setting feature dependencies."""
    depends_on: List[int] = Field(default_factory=list)

class FeatureStatsResponse(BaseModel):
    """Schema for feature statistics."""
    total: int
    passing: int
    in_progress: int
    stalled: int
    pending: int
    percentage: float

# ============================================================================
# API Endpoints
# ============================================================================

@router.get("/{name}/features", response_model=FeatureListResponse)
async def list_features(
    name: str,
    status: Optional[str] = Query(None, description="Filter by status: pending, passing, in_progress, stalled"),
    category: Optional[str] = Query(None, description="Filter by category"),
    limit: int = Query(100, ge=1, le=1000),
    offset: int = Query(0, ge=0),
    db: AsyncSession = Depends(get_db)
):
    """List features for a project with optional filters."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Build query
    query = select(Feature).where(Feature.project_id == project.id)

    # Apply status filter
    if status:
        if status == "pending":
            query = query.where(and_(
                Feature.passes == False,
                Feature.in_progress == False,
                Feature.stalled == False
            ))
        elif status == "passing":
            query = query.where(Feature.passes == True)
        elif status == "in_progress":
            query = query.where(Feature.in_progress == True)
        elif status == "stalled":
            query = query.where(Feature.stalled == True)

    # Apply category filter
    if category:
        query = query.where(Feature.category == category)

    # Get total count before pagination
    count_query = select(Feature).where(Feature.project_id == project.id)
    count_result = await db.execute(count_query)
    total = len(count_result.scalars().all())

    # Apply pagination
    query = query.order_by(Feature.priority).offset(offset).limit(limit)
    result = await db.execute(query)
    features = result.scalars().all()

    return FeatureListResponse(
        features=[FeatureResponse.model_validate(f) for f in features],
        count=len(features),
        total=total
    )

@router.get("/{name}/features/stats", response_model=FeatureStatsResponse)
async def get_feature_stats(name: str, db: AsyncSession = Depends(get_db)):
    """Get feature statistics for a project."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = result.scalars().all()

    total = len(features)
    passing = sum(1 for f in features if f.passes)
    in_progress = sum(1 for f in features if f.in_progress)
    stalled = sum(1 for f in features if f.stalled)
    pending = total - passing - in_progress - stalled

    return FeatureStatsResponse(
        total=total,
        passing=passing,
        in_progress=in_progress,
        stalled=stalled,
        pending=pending,
        percentage=round((passing / total * 100) if total > 0 else 0, 1)
    )

@router.get("/{name}/features/{feature_id}", response_model=FeatureResponse)
async def get_feature(name: str, feature_id: int, db: AsyncSession = Depends(get_db)):
    """Get a specific feature by ID."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get feature
    result = await db.execute(
        select(Feature).where(and_(
            Feature.id == feature_id,
            Feature.project_id == project.id
        ))
    )
    feature = result.scalar_one_or_none()

    if not feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    return FeatureResponse.model_validate(feature)

@router.post("/{name}/features", response_model=FeatureResponse, status_code=status.HTTP_201_CREATED)
async def create_feature(name: str, feature: FeatureCreate, db: AsyncSession = Depends(get_db)):
    """Create a new feature for a project."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Create feature
    db_feature = Feature(
        project_id=project.id,
        priority=feature.priority,
        category=feature.category,
        name=feature.name,
        description=feature.description,
        steps=feature.steps,
        depends_on=feature.depends_on,
    )
    db.add(db_feature)
    await db.commit()
    await db.refresh(db_feature)

    return FeatureResponse.model_validate(db_feature)

@router.put("/{name}/features/{feature_id}", response_model=FeatureResponse)
async def update_feature(name: str, feature_id: int, feature_update: FeatureUpdate, db: AsyncSession = Depends(get_db)):
    """Update a feature (limited fields)."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get feature
    result = await db.execute(
        select(Feature).where(and_(
            Feature.id == feature_id,
            Feature.project_id == project.id
        ))
    )
    feature = result.scalar_one_or_none()

    if not feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    # Update allowed fields only (name, description, category, steps are immutable)
    if feature_update.priority is not None:
        feature.priority = feature_update.priority
    if feature_update.passes is not None:
        feature.passes = feature_update.passes
    if feature_update.in_progress is not None:
        feature.in_progress = feature_update.in_progress
    if feature_update.stalled is not None:
        feature.stalled = feature_update.stalled
    if feature_update.stall_reason is not None:
        feature.stall_reason = feature_update.stall_reason
    if feature_update.assigned_agent is not None:
        feature.assigned_agent = feature_update.assigned_agent
    if feature_update.depends_on is not None:
        feature.depends_on = feature_update.depends_on

    feature.updated_at = datetime.utcnow()
    await db.commit()
    await db.refresh(feature)

    return FeatureResponse.model_validate(feature)

@router.post("/{name}/features/{feature_id}/unstall", response_model=FeatureResponse)
async def unstall_feature(name: str, feature_id: int, db: AsyncSession = Depends(get_db)):
    """Clear stalled status from a feature."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get feature
    result = await db.execute(
        select(Feature).where(and_(
            Feature.id == feature_id,
            Feature.project_id == project.id
        ))
    )
    feature = result.scalar_one_or_none()

    if not feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    feature.stalled = False
    feature.stall_reason = None
    feature.updated_at = datetime.utcnow()
    await db.commit()
    await db.refresh(feature)

    return FeatureResponse.model_validate(feature)

# ============================================================================
# Dependency Management Endpoints
# ============================================================================

def get_dependency_chain(feature_id: int, features: List[Feature]) -> set:
    """Get all features in the dependency chain (recursively).

    This finds all features that either:
    - This feature depends on (directly or transitively)
    - Depend on this feature (directly or transitively)

    All features in this chain must be assigned to the same agent.
    """
    feature_map = {f.id: f for f in features}
    chain = set()
    visited = set()

    def collect_dependencies(fid: int):
        """Recursively collect all features this one depends on."""
        if fid in visited or fid not in feature_map:
            return
        visited.add(fid)
        chain.add(fid)
        feature = feature_map[fid]
        for dep_id in (feature.depends_on or []):
            collect_dependencies(dep_id)

    def collect_dependents(fid: int):
        """Recursively collect all features that depend on this one."""
        if fid in visited:
            return
        visited.add(fid)
        chain.add(fid)
        for f in features:
            if fid in (f.depends_on or []):
                collect_dependents(f.id)

    # Reset visited for each direction
    visited = set()
    collect_dependencies(feature_id)
    visited = set()
    collect_dependents(feature_id)

    return chain

@router.get("/{name}/features/{feature_id}/dependencies", response_model=DependencyChainResponse)
async def get_feature_dependencies(name: str, feature_id: int, db: AsyncSession = Depends(get_db)):
    """Get dependency information for a feature."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features for the project
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = result.scalars().all()

    # Find the target feature
    target_feature = None
    for f in features:
        if f.id == feature_id:
            target_feature = f
            break

    if not target_feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    # Get features that depend on this one
    depended_by = [f.id for f in features if feature_id in (f.depends_on or [])]

    # Get full dependency chain
    chain = get_dependency_chain(feature_id, features)

    return DependencyChainResponse(
        feature_id=feature_id,
        depends_on=target_feature.depends_on or [],
        depended_by=depended_by,
        chain=sorted(list(chain))
    )

@router.put("/{name}/features/{feature_id}/dependencies", response_model=FeatureResponse)
async def set_feature_dependencies(
    name: str,
    feature_id: int,
    request: SetDependenciesRequest,
    db: AsyncSession = Depends(get_db)
):
    """Set dependencies for a feature.

    If the feature or any of its dependencies are already assigned to an agent,
    all features in the dependency chain will be assigned to the same agent.
    """
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features for the project
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = list(result.scalars().all())
    feature_map = {f.id: f for f in features}

    # Find the target feature
    if feature_id not in feature_map:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    target_feature = feature_map[feature_id]

    # Validate all dependency IDs exist in the same project
    for dep_id in request.depends_on:
        if dep_id not in feature_map:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=f"Dependency feature {dep_id} not found in project '{name}'"
            )
        if dep_id == feature_id:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail="A feature cannot depend on itself"
            )

    # Detect circular dependencies
    def has_circular_dependency(start_id: int, target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle that includes start_id."""
        visited = set()

        def dfs(fid: int) -> bool:
            if fid == start_id:
                return True
            if fid in visited:
                return False
            visited.add(fid)

            deps = new_deps if fid == target_id else (feature_map[fid].depends_on or [])
            for dep_id in deps:
                if dep_id in feature_map and dfs(dep_id):
                    return True
            return False

        return dfs(target_id)

    if has_circular_dependency(feature_id, feature_id, request.depends_on):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Circular dependency detected"
        )

    # Update the dependencies
    target_feature.depends_on = request.depends_on
    target_feature.updated_at = datetime.utcnow()

    # Update the feature map for chain calculation
    features = [f if f.id != feature_id else target_feature for f in features]

    # Get the full dependency chain
    chain = get_dependency_chain(feature_id, features)

    # Check if any feature in the chain has an assigned agent
    assigned_agent = None
    for fid in chain:
        if feature_map[fid].assigned_agent:
            if assigned_agent is None:
                assigned_agent = feature_map[fid].assigned_agent
            elif assigned_agent != feature_map[fid].assigned_agent:
                # Conflict: different agents assigned to features in the same chain
                # Prioritize keeping all in the same chain
                pass

    # If any feature in the chain has an agent, assign all to that agent
    if assigned_agent:
        for fid in chain:
            if feature_map[fid].assigned_agent != assigned_agent:
                feature_map[fid].assigned_agent = assigned_agent
                feature_map[fid].updated_at = datetime.utcnow()

    await db.commit()
    await db.refresh(target_feature)

    return FeatureResponse.model_validate(target_feature)

@router.post("/{name}/features/{feature_id}/assign-agent", response_model=List[FeatureResponse])
async def assign_feature_to_agent(
    name: str,
    feature_id: int,
    agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
    db: AsyncSession = Depends(get_db)
):
    """Assign a feature and all its dependencies to an agent.

    This ensures that all features in the dependency chain are assigned
    to the same agent to prevent conflicts.
    """
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features for the project
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = list(result.scalars().all())
    feature_map = {f.id: f for f in features}

    # Find the target feature
    if feature_id not in feature_map:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    # Get the full dependency chain
    chain = get_dependency_chain(feature_id, features)

    # Check for conflicts with other agent
    other_agent = "B" if agent_id == "A" else "A"
    conflicting_features = [
        fid for fid in chain
        if feature_map[fid].assigned_agent == other_agent
    ]

    if conflicting_features:
        raise HTTPException(
            status_code=status.HTTP_409_CONFLICT,
            detail=f"Features {conflicting_features} in dependency chain are assigned to Agent {other_agent}"
        )

    # Assign all features in the chain to the agent
    updated_features = []
    for fid in chain:
        feature = feature_map[fid]
        if feature.assigned_agent != agent_id:
            feature.assigned_agent = agent_id
            feature.updated_at = datetime.utcnow()
        updated_features.append(feature)

    await db.commit()

    # Refresh all updated features
    for feature in updated_features:
        await db.refresh(feature)

    return [FeatureResponse.model_validate(f) for f in updated_features]

-    def has_circular_dependency(start_id: int, target_id: int, new_deps: List[int]) -> bool:

-        """Check if adding new_deps to target_id creates a cycle that includes start_id."""

+    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:

+        """Check if adding new_deps to target_id creates a cycle.

+        A cycle exists if any of the new dependencies eventually depend on target_id.

+        def would_create_cycle(fid: int) -> bool:

+            """Check if feature fid depends (directly or indirectly) on target_id."""

+                return True  # Found a cycle back to target

-            deps = new_deps if fid == target_id else (feature_map[fid].depends_on or [])

+            # Get dependencies of this feature

+            deps = feature_map[fid].depends_on or [] if fid in feature_map else []

-                if dep_id in feature_map and dfs(dep_id):

+                if would_create_cycle(dep_id):

+        # Check each new dependency - if any of them lead back to target_id, it's a cycle

+            visited = set()  # Reset for each starting point

+            if would_create_cycle(dep_id):

-    if has_circular_dependency(feature_id, feature_id, request.depends_on):

+    if has_circular_dependency(feature_id, request.depends_on):


The server should auto-reload. Let me test again:


Bash

sleep 2 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Set feature 20 to depend on feature 19


Still failing. Let me check the server output:


<retrieval_status>not_ready</retrieval_status>

<task_id>bf92a77</task_id>

<task_type>local_bash</task_type>

<status>running</status>

<output>
[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [16556] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:552: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [316932]
[stderr] INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.
Autocoder+ server starting on 127.0.0.1:8000
Initializing database...
Database initialized successfully
Running migrations...
Adding depends_on column to features table...
depends_on column added successfully
Migrations complete
INFO:     127.0.0.1:50067 - "GET /api/projects/kanban-test/features/36 HTTP/1.1" 200 OK
INFO:     127.0.0.1:52138 - "GET /api/projects/kanban-test/features/36/dependencies HTTP/1.1" 200 OK
INFO:     127.0.0.1:59133 - "GET /api/projects/kanban-test/features HTTP/1.1" 200 OK
INFO:     127.0.0.1:50212 - "PUT /api/projects/kanban-test/features/20/dependencies HTTP/1.1" 400 Bad Request
INFO:     127.0.0.1:54141 - "GET /api/projects/kanban-test/features/20 HTTP/1.1" 200 OK
[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...
 INFO:     127.0.0.1:50364 - "PUT /api/projects/kanban-test/features/20/dependencies HTTP/1.1" 400 Bad Request
</output>

Start backend server on port 8099

Output:
[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [16556] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:552: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [316932]
[stderr] INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.
Autocoder+ server starting on 127.0.0.1:8000
Initializing database...
Database initialized successfully
Running migrations...
Adding depends_on column to features table...
depends_on column added successfully
Migrations complete
INFO:     127.0.0.1:50067 - "GET /api/projects/kanban-test/features/36 HTTP/1.1" 200 OK
INFO:     127.0.0.1:52138 - "GET /api/projects/kanban-test/features/36/dependencies HTTP/1.1" 200 OK
INFO:     127.0.0.1:59133 - "GET /api/projects/kanban-test/features HTTP/1.1" 200 OK
INFO:     127.0.0.1:50212 - "PUT /api/projects/kanban-test/features/20/dependencies HTTP/1.1" 400 Bad Request
INFO:     127.0.0.1:54141 - "GET /api/projects/kanban-test/features/20 HTTP/1.1" 200 OK
[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...
 INFO:     127.0.0.1:50364 - "PUT /api/projects/kanban-test/features/20/dependencies HTTP/1.1" 400 Bad Request


The server detected the change but still returning 400. Let me look more carefully at the logic - the issue is that when we call `would_create_cycle(dep_id)`, we're checking if feature 19 depends on feature 20. But feature 19 has empty dependencies, so that check should return False.

Wait - I think the issue is that the server hasn't finished reloading. Let me wait a bit more and try again:


sleep 3 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Set feature 20 to depend on feature 19 (retry)


Still failing. Let me trace through the logic more carefully. Actually I see the issue now - when checking feature 19, it calls `would_create_cycle(19)`:
1. `fid = 19`, `target_id = 20`
2. `fid == target_id`? No (19 != 20)
3. Add 19 to visited
4. Get deps of 19: empty list `[]`
5. Return False

That should work... Let me add some debugging. Actually wait - I need to re-read the logic. Let me look at the complete function again after the edit:


   486→            )
   487→
   488→    # Detect circular dependencies
   489→    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
   490→        """Check if adding new_deps to target_id creates a cycle.
   491→
   492→        A cycle exists if any of the new dependencies eventually depend on target_id.
   493→        """
   494→        visited = set()
   495→
   496→        def would_create_cycle(fid: int) -> bool:
   497→            """Check if feature fid depends (directly or indirectly) on target_id."""
   498→            if fid == target_id:
   499→                return True  # Found a cycle back to target
   500→            if fid in visited:
   501→                return False
   502→            visited.add(fid)
   503→
   504→            # Get dependencies of this feature
   505→            deps = feature_map[fid].depends_on or [] if fid in feature_map else []
   506→            for dep_id in deps:
   507→                if would_create_cycle(dep_id):
   508→                    return True
   509→            return False
   510→
   511→        # Check each new dependency - if any of them lead back to target_id, it's a cycle
   512→        for dep_id in new_deps:
   513→            visited = set()  # Reset for each starting point
   514→            if would_create_cycle(dep_id):
   515→                return True
   516→        return False
   517→
   518→    if has_circular_dependency(feature_id, request.depends_on):
   519→        raise HTTPException(
   520→            status_code=status.HTTP_400_BAD_REQUEST,
   521→            detail="Circular dependency detected"
   522→        )
   523→
   524→    # Update the dependencies
   525→    target_feature.depends_on = request.depends_on

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

            )

    # Detect circular dependencies
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        """
        visited = set()

        def would_create_cycle(fid: int) -> bool:
            """Check if feature fid depends (directly or indirectly) on target_id."""
            if fid == target_id:
                return True  # Found a cycle back to target
            if fid in visited:
                return False
            visited.add(fid)

            # Get dependencies of this feature
            deps = feature_map[fid].depends_on or [] if fid in feature_map else []
            for dep_id in deps:
                if would_create_cycle(dep_id):
                    return True
            return False

        # Check each new dependency - if any of them lead back to target_id, it's a cycle
        for dep_id in new_deps:
            visited = set()  # Reset for each starting point
            if would_create_cycle(dep_id):
                return True
        return False

    if has_circular_dependency(feature_id, request.depends_on):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Circular dependency detected"
        )

    # Update the dependencies
    target_feature.depends_on = request.depends_on


The logic looks correct. Let me check if the server has actually reloaded with the new code - let me trace through:
- `has_circular_dependency(20, [19])` is called
- For `dep_id = 19`:
  - `visited = set()`
  - `would_create_cycle(19)`:
    - `fid = 19`, `target_id = 20`
    - `19 == 20`? No
    - `19 in visited`? No
    - Add 19 to visited
    - Get deps of feature 19: should be `[]`
    - Loop over empty deps, return False
  - Returns False
- Returns False

This should work. Let me check if the issue is that the server hasn't actually reloaded. Let me kill the background task and restart:


<task-notification>
<task-id>bf92a77</task-id>
<output-file>C:\Users\MIKESW~1\AppData\Local\Temp\claude\C--Users-MikeSwanson-claude-projects-Autocode-remix-Autocode-fork\tasks\bf92a77.output</output-file>
<status>killed</status>
<summary>Background command "Start backend server on port 8099" was killed.</summary>
</task-notification>
Read the output file to retrieve the result: C:\Users\MIKESW~1\AppData\Local\Temp\claude\C--Users-MikeSwanson-claude-projects-Autocode-remix-Autocode-fork\tasks\bf92a77.output


Successfully killed shell: bf92a77 (bash /c/Users/MikeSwanson/claude-projects/Autocode-remix/Autocode-fork/start_server_8099.sh)


Restart backend server on port 8099


Command running in background with ID: b89f06a. Output is being written to: C:\Users\MIKESW~1\AppData\Local\Temp\claude\C--Users-MikeSwanson-claude-projects-Autocode-remix-Autocode-fork\tasks\b89f06a.output


sleep 5 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Set feature 20 to depend on feature 19


Still failing. Let me add some debug logging to understand what's happening:


Edit

    # Detect circular dependencies
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        """
        visited = set()

        def would_create_cycle(fid: int) -> bool:
            """Check if feature fid depends (directly or indirectly) on target_id."""
            if fid == target_id:
                return True  # Found a cycle back to target
            if fid in visited:
                return False
            visited.add(fid)

            # Get dependencies of this feature
            deps = feature_map[fid].depends_on or [] if fid in feature_map else []
            for dep_id in deps:
                if would_create_cycle(dep_id):
                    return True
            return False

        # Check each new dependency - if any of them lead back to target_id, it's a cycle
        for dep_id in new_deps:
            visited = set()  # Reset for each starting point
            if would_create_cycle(dep_id):
                return True
        return False

    if has_circular_dependency(feature_id, request.depends_on):

    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")

        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
            """Check if feature_id depends (directly or indirectly) on check_id."""
            if feature_id == check_id:
                return True
            if feature_id in visited:
                return False
            visited.add(feature_id)

            feature = feature_map.get(feature_id)
            if not feature:
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {feature_id} has deps {deps}")
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
            if feature_depends_on(dep_id, target_id, set()):
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
                return True
        print(f"DEBUG: No cycle found")
        return False

    if has_circular_dependency(feature_id, request.depends_on):


The file C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   484→                status_code=status.HTTP_400_BAD_REQUEST,
   485→                detail="A feature cannot depend on itself"
   486→            )
   487→
   488→    # Detect circular dependencies - check if any new dependency would create a path back to target
   489→    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
   490→        """Check if adding new_deps to target_id creates a cycle.
   491→
   492→        A cycle exists if any of the new dependencies eventually depend on target_id.
   493→        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
   494→        """
   495→        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")
   496→
   497→        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
   498→            """Check if feature_id depends (directly or indirectly) on check_id."""
   499→            if feature_id == check_id:
   500→                return True
   501→            if feature_id in visited:
   502→                return False
   503→            visited.add(feature_id)
   504→
   505→            feature = feature_map.get(feature_id)
   506→            if not feature:
   507→                return False
   508→
   509→            deps = feature.depends_on or []
   510→            print(f"DEBUG: Feature {feature_id} has deps {deps}")
   511→            for dep_id in deps:
   512→                if feature_depends_on(dep_id, check_id, visited):
   513→                    return True
   514→            return False
   515→
   516→        # Check: would any new dependency create a path back to target_id?
   517→        for dep_id in new_deps:
   518→            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
   519→            if feature_depends_on(dep_id, target_id, set()):
   520→                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
   521→                return True
   522→        print(f"DEBUG: No cycle found")
   523→        return False
   524→
   525→    if has_circular_dependency(feature_id, request.depends_on):
   526→        raise HTTPException(
   527→            status_code=status.HTTP_400_BAD_REQUEST,
   528→            detail="Circular dependency detected"
   529→        )

    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")

        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
            """Check if feature_id depends (directly or indirectly) on check_id."""
            if feature_id == check_id:
                return True
            if feature_id in visited:
                return False
            visited.add(feature_id)

            feature = feature_map.get(feature_id)
            if not feature:
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {feature_id} has deps {deps}")
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
            if feature_depends_on(dep_id, target_id, set()):
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
                return True
        print(f"DEBUG: No cycle found")
        return False

    if has_circular_dependency(feature_id, request.depends_on):

"""
Features Router
===============

API endpoints for feature management within projects.
"""

from datetime import datetime
from typing import Optional, List

from fastapi import APIRouter, Depends, HTTPException, status, Query
from pydantic import BaseModel, Field
from sqlalchemy import select, and_
from sqlalchemy.ext.asyncio import AsyncSession

from ..database import get_db
from ..models import Project, Feature

router = APIRouter(prefix="/api/projects", tags=["features"])

# ============================================================================
# Pydantic Schemas
# ============================================================================

class FeatureResponse(BaseModel):
    """Schema for feature response."""
    id: int
    project_id: int
    priority: int
    category: str
    name: str
    description: Optional[str]
    steps: List[str]
    passes: bool
    in_progress: bool
    stalled: bool
    stall_reason: Optional[str]
    assigned_agent: Optional[str]
    depends_on: List[int] = []
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True

class FeatureListResponse(BaseModel):
    """Schema for feature list response."""
    features: List[FeatureResponse]
    count: int
    total: int

class FeatureCreate(BaseModel):
    """Schema for creating a feature."""
    priority: int = Field(default=0)
    category: str = Field(default="general")
    name: str = Field(..., min_length=1, max_length=255)
    description: Optional[str] = None
    steps: List[str] = Field(default_factory=list)
    depends_on: List[int] = Field(default_factory=list)

class FeatureUpdate(BaseModel):
    """Schema for updating a feature.

    Note: Only specific fields are allowed to be updated.
    Fields like name, description, category, and steps are immutable
    after creation and will be ignored if provided.
    """
    priority: Optional[int] = None
    passes: Optional[bool] = None
    in_progress: Optional[bool] = None
    stalled: Optional[bool] = None
    stall_reason: Optional[str] = None
    assigned_agent: Optional[str] = None
    depends_on: Optional[List[int]] = None

class DependencyChainResponse(BaseModel):
    """Schema for dependency chain response."""
    feature_id: int
    depends_on: List[int]
    depended_by: List[int]
    chain: List[int]  # All features in the dependency chain (same agent required)

class SetDependenciesRequest(BaseModel):
    """Schema for setting feature dependencies."""
    depends_on: List[int] = Field(default_factory=list)

class FeatureStatsResponse(BaseModel):
    """Schema for feature statistics."""
    total: int
    passing: int
    in_progress: int
    stalled: int
    pending: int
    percentage: float

# ============================================================================
# API Endpoints
# ============================================================================

@router.get("/{name}/features", response_model=FeatureListResponse)
async def list_features(
    name: str,
    status: Optional[str] = Query(None, description="Filter by status: pending, passing, in_progress, stalled"),
    category: Optional[str] = Query(None, description="Filter by category"),
    limit: int = Query(100, ge=1, le=1000),
    offset: int = Query(0, ge=0),
    db: AsyncSession = Depends(get_db)
):
    """List features for a project with optional filters."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Build query
    query = select(Feature).where(Feature.project_id == project.id)

    # Apply status filter
    if status:
        if status == "pending":
            query = query.where(and_(
                Feature.passes == False,
                Feature.in_progress == False,
                Feature.stalled == False
            ))
        elif status == "passing":
            query = query.where(Feature.passes == True)
        elif status == "in_progress":
            query = query.where(Feature.in_progress == True)
        elif status == "stalled":
            query = query.where(Feature.stalled == True)

    # Apply category filter
    if category:
        query = query.where(Feature.category == category)

    # Get total count before pagination
    count_query = select(Feature).where(Feature.project_id == project.id)
    count_result = await db.execute(count_query)
    total = len(count_result.scalars().all())

    # Apply pagination
    query = query.order_by(Feature.priority).offset(offset).limit(limit)
    result = await db.execute(query)
    features = result.scalars().all()

    return FeatureListResponse(
        features=[FeatureResponse.model_validate(f) for f in features],
        count=len(features),
        total=total
    )

@router.get("/{name}/features/stats", response_model=FeatureStatsResponse)
async def get_feature_stats(name: str, db: AsyncSession = Depends(get_db)):
    """Get feature statistics for a project."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = result.scalars().all()

    total = len(features)
    passing = sum(1 for f in features if f.passes)
    in_progress = sum(1 for f in features if f.in_progress)
    stalled = sum(1 for f in features if f.stalled)
    pending = total - passing - in_progress - stalled

    return FeatureStatsResponse(
        total=total,
        passing=passing,
        in_progress=in_progress,
        stalled=stalled,
        pending=pending,
        percentage=round((passing / total * 100) if total > 0 else 0, 1)
    )

@router.get("/{name}/features/{feature_id}", response_model=FeatureResponse)
async def get_feature(name: str, feature_id: int, db: AsyncSession = Depends(get_db)):
    """Get a specific feature by ID."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get feature
    result = await db.execute(
        select(Feature).where(and_(
            Feature.id == feature_id,
            Feature.project_id == project.id
        ))
    )
    feature = result.scalar_one_or_none()

    if not feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    return FeatureResponse.model_validate(feature)

@router.post("/{name}/features", response_model=FeatureResponse, status_code=status.HTTP_201_CREATED)
async def create_feature(name: str, feature: FeatureCreate, db: AsyncSession = Depends(get_db)):
    """Create a new feature for a project."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Create feature
    db_feature = Feature(
        project_id=project.id,
        priority=feature.priority,
        category=feature.category,
        name=feature.name,
        description=feature.description,
        steps=feature.steps,
        depends_on=feature.depends_on,
    )
    db.add(db_feature)
    await db.commit()
    await db.refresh(db_feature)

    return FeatureResponse.model_validate(db_feature)

@router.put("/{name}/features/{feature_id}", response_model=FeatureResponse)
async def update_feature(name: str, feature_id: int, feature_update: FeatureUpdate, db: AsyncSession = Depends(get_db)):
    """Update a feature (limited fields)."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get feature
    result = await db.execute(
        select(Feature).where(and_(
            Feature.id == feature_id,
            Feature.project_id == project.id
        ))
    )
    feature = result.scalar_one_or_none()

    if not feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    # Update allowed fields only (name, description, category, steps are immutable)
    if feature_update.priority is not None:
        feature.priority = feature_update.priority
    if feature_update.passes is not None:
        feature.passes = feature_update.passes
    if feature_update.in_progress is not None:
        feature.in_progress = feature_update.in_progress
    if feature_update.stalled is not None:
        feature.stalled = feature_update.stalled
    if feature_update.stall_reason is not None:
        feature.stall_reason = feature_update.stall_reason
    if feature_update.assigned_agent is not None:
        feature.assigned_agent = feature_update.assigned_agent
    if feature_update.depends_on is not None:
        feature.depends_on = feature_update.depends_on

    feature.updated_at = datetime.utcnow()
    await db.commit()
    await db.refresh(feature)

    return FeatureResponse.model_validate(feature)

@router.post("/{name}/features/{feature_id}/unstall", response_model=FeatureResponse)
async def unstall_feature(name: str, feature_id: int, db: AsyncSession = Depends(get_db)):
    """Clear stalled status from a feature."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get feature
    result = await db.execute(
        select(Feature).where(and_(
            Feature.id == feature_id,
            Feature.project_id == project.id
        ))
    )
    feature = result.scalar_one_or_none()

    if not feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    feature.stalled = False
    feature.stall_reason = None
    feature.updated_at = datetime.utcnow()
    await db.commit()
    await db.refresh(feature)

    return FeatureResponse.model_validate(feature)

# ============================================================================
# Dependency Management Endpoints
# ============================================================================

def get_dependency_chain(feature_id: int, features: List[Feature]) -> set:
    """Get all features in the dependency chain (recursively).

    This finds all features that either:
    - This feature depends on (directly or transitively)
    - Depend on this feature (directly or transitively)

    All features in this chain must be assigned to the same agent.
    """
    feature_map = {f.id: f for f in features}
    chain = set()
    visited = set()

    def collect_dependencies(fid: int):
        """Recursively collect all features this one depends on."""
        if fid in visited or fid not in feature_map:
            return
        visited.add(fid)
        chain.add(fid)
        feature = feature_map[fid]
        for dep_id in (feature.depends_on or []):
            collect_dependencies(dep_id)

    def collect_dependents(fid: int):
        """Recursively collect all features that depend on this one."""
        if fid in visited:
            return
        visited.add(fid)
        chain.add(fid)
        for f in features:
            if fid in (f.depends_on or []):
                collect_dependents(f.id)

    # Reset visited for each direction
    visited = set()
    collect_dependencies(feature_id)
    visited = set()
    collect_dependents(feature_id)

    return chain

@router.get("/{name}/features/{feature_id}/dependencies", response_model=DependencyChainResponse)
async def get_feature_dependencies(name: str, feature_id: int, db: AsyncSession = Depends(get_db)):
    """Get dependency information for a feature."""
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features for the project
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = result.scalars().all()

    # Find the target feature
    target_feature = None
    for f in features:
        if f.id == feature_id:
            target_feature = f
            break

    if not target_feature:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    # Get features that depend on this one
    depended_by = [f.id for f in features if feature_id in (f.depends_on or [])]

    # Get full dependency chain
    chain = get_dependency_chain(feature_id, features)

    return DependencyChainResponse(
        feature_id=feature_id,
        depends_on=target_feature.depends_on or [],
        depended_by=depended_by,
        chain=sorted(list(chain))
    )

@router.put("/{name}/features/{feature_id}/dependencies", response_model=FeatureResponse)
async def set_feature_dependencies(
    name: str,
    feature_id: int,
    request: SetDependenciesRequest,
    db: AsyncSession = Depends(get_db)
):
    """Set dependencies for a feature.

    If the feature or any of its dependencies are already assigned to an agent,
    all features in the dependency chain will be assigned to the same agent.
    """
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features for the project
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = list(result.scalars().all())
    feature_map = {f.id: f for f in features}

    # Find the target feature
    if feature_id not in feature_map:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    target_feature = feature_map[feature_id]

    # Validate all dependency IDs exist in the same project
    for dep_id in request.depends_on:
        if dep_id not in feature_map:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=f"Dependency feature {dep_id} not found in project '{name}'"
            )
        if dep_id == feature_id:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail="A feature cannot depend on itself"
            )

    # Detect circular dependencies
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        """
        visited = set()

        def would_create_cycle(fid: int) -> bool:
            """Check if feature fid depends (directly or indirectly) on target_id."""
            if fid == target_id:
                return True  # Found a cycle back to target
            if fid in visited:
                return False
            visited.add(fid)

            # Get dependencies of this feature
            deps = feature_map[fid].depends_on or [] if fid in feature_map else []
            for dep_id in deps:
                if would_create_cycle(dep_id):
                    return True
            return False

        # Check each new dependency - if any of them lead back to target_id, it's a cycle
        for dep_id in new_deps:
            visited = set()  # Reset for each starting point
            if would_create_cycle(dep_id):
                return True
        return False

    if has_circular_dependency(feature_id, request.depends_on):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Circular dependency detected"
        )

    # Update the dependencies
    target_feature.depends_on = request.depends_on
    target_feature.updated_at = datetime.utcnow()

    # Update the feature map for chain calculation
    features = [f if f.id != feature_id else target_feature for f in features]

    # Get the full dependency chain
    chain = get_dependency_chain(feature_id, features)

    # Check if any feature in the chain has an assigned agent
    assigned_agent = None
    for fid in chain:
        if feature_map[fid].assigned_agent:
            if assigned_agent is None:
                assigned_agent = feature_map[fid].assigned_agent
            elif assigned_agent != feature_map[fid].assigned_agent:
                # Conflict: different agents assigned to features in the same chain
                # Prioritize keeping all in the same chain
                pass

    # If any feature in the chain has an agent, assign all to that agent
    if assigned_agent:
        for fid in chain:
            if feature_map[fid].assigned_agent != assigned_agent:
                feature_map[fid].assigned_agent = assigned_agent
                feature_map[fid].updated_at = datetime.utcnow()

    await db.commit()
    await db.refresh(target_feature)

    return FeatureResponse.model_validate(target_feature)

@router.post("/{name}/features/{feature_id}/assign-agent", response_model=List[FeatureResponse])
async def assign_feature_to_agent(
    name: str,
    feature_id: int,
    agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
    db: AsyncSession = Depends(get_db)
):
    """Assign a feature and all its dependencies to an agent.

    This ensures that all features in the dependency chain are assigned
    to the same agent to prevent conflicts.
    """
    # Verify project exists
    result = await db.execute(select(Project).where(Project.name == name))
    project = result.scalar_one_or_none()

    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Project '{name}' not found"
        )

    # Get all features for the project
    result = await db.execute(select(Feature).where(Feature.project_id == project.id))
    features = list(result.scalars().all())
    feature_map = {f.id: f for f in features}

    # Find the target feature
    if feature_id not in feature_map:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Feature {feature_id} not found in project '{name}'"
        )

    # Get the full dependency chain
    chain = get_dependency_chain(feature_id, features)

    # Check for conflicts with other agent
    other_agent = "B" if agent_id == "A" else "A"
    conflicting_features = [
        fid for fid in chain
        if feature_map[fid].assigned_agent == other_agent
    ]

    if conflicting_features:
        raise HTTPException(
            status_code=status.HTTP_409_CONFLICT,
            detail=f"Features {conflicting_features} in dependency chain are assigned to Agent {other_agent}"
        )

    # Assign all features in the chain to the agent
    updated_features = []
    for fid in chain:
        feature = feature_map[fid]
        if feature.assigned_agent != agent_id:
            feature.assigned_agent = agent_id
            feature.updated_at = datetime.utcnow()
        updated_features.append(feature)

    await db.commit()

    # Refresh all updated features
    for feature in updated_features:
        await db.refresh(feature)

    return [FeatureResponse.model_validate(f) for f in updated_features]

+    # Detect circular dependencies - check if any new dependency would create a path back to target

+        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).

+        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")

-        def would_create_cycle(fid: int) -> bool:

-            """Check if feature fid depends (directly or indirectly) on target_id."""

-                return True  # Found a cycle back to target

+        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:

+            """Check if feature_id depends (directly or indirectly) on check_id."""

-            # Get dependencies of this feature

-            deps = feature_map[fid].depends_on or [] if fid in feature_map else []

+            feature = feature_map.get(feature_id)

+            deps = feature.depends_on or []

+            print(f"DEBUG: Feature {feature_id} has deps {deps}")

-                if would_create_cycle(dep_id):

+                if feature_depends_on(dep_id, check_id, visited):

-        # Check each new dependency - if any of them lead back to target_id, it's a cycle

+        # Check: would any new dependency create a path back to target_id?

-            visited = set()  # Reset for each starting point

-            if would_create_cycle(dep_id):

+            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")

+            if feature_depends_on(dep_id, target_id, set()):

+                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")

+        print(f"DEBUG: No cycle found")


Bash

sleep 3 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Test with debug output


<retrieval_status>not_ready</retrieval_status>

<task_id>b89f06a</task_id>

<task_type>local_bash</task_type>

<status>running</status>

<output>
[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [318424] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:562: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [315420]
INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.
[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...
</output>

Restart backend server on port 8099

Output:
[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [318424] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:562: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [315420]
INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.
[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...


I see the reload happening but not the debug output. Let me wait a bit more and try again:


sleep 5 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Test with debug output after reload


Restart backend server on port 8099

Output:
[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [318424] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:562: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [315420]
INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.
[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...


The server is reloading but the debug output isn't showing, and the request is still failing. This might be hitting the cached old version. Let me check the full output:


     1→[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
     2→[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
     3→INFO:     Started reloader process [318424] using WatchFiles
     4→[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:562: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
     5→  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
     6→[stderr] INFO:     Started server process [315420]
     7→INFO:     Waiting for application startup.
     8→[stderr] INFO:     Application startup complete.
     9→[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...
    10→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [318424] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:562: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [315420]
INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.
[stderr] WARNING:  WatchFiles detected changes in 'app\routers\features.py'. Reloading...


I see the reload was detected. The new process may not have started yet. Let me wait longer and try:


sleep 8 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Test dependencies endpoint after longer wait


The reload process seems to be stuck. Let me kill and restart the server again:


<task-notification>
<task-id>b89f06a</task-id>
<output-file>C:\Users\MIKESW~1\AppData\Local\Temp\claude\C--Users-MikeSwanson-claude-projects-Autocode-remix-Autocode-fork\tasks\b89f06a.output</output-file>
<status>killed</status>
<summary>Background command "Restart backend server on port 8099" was killed.</summary>
</task-notification>
Read the output file to retrieve the result: C:\Users\MIKESW~1\AppData\Local\Temp\claude\C--Users-MikeSwanson-claude-projects-Autocode-remix-Autocode-fork\tasks\b89f06a.output


Successfully killed shell: b89f06a (bash /c/Users/MikeSwanson/claude-projects/Autocode-remix/Autocode-fork/start_server_8099.sh)


Restart backend server


Command running in background with ID: b6e7e64. Output is being written to: C:\Users\MIKESW~1\AppData\Local\Temp\claude\C--Users-MikeSwanson-claude-projects-Autocode-remix-Autocode-fork\tasks\b6e7e64.output


sleep 6 && curl -s -X PUT "http://localhost:8099/api/projects/kanban-test/features/20/dependencies" -H "Content-Type: application/json" -d '{"depends_on": [19]}'

Test dependencies endpoint


     1→[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
     2→[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
     3→INFO:     Started reloader process [320620] using WatchFiles
     4→[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:569: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
     5→  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
     6→[stderr] INFO:     Started server process [320696]
     7→[stderr] INFO:     Waiting for application startup.
     8→[stderr] INFO:     Application startup complete.
     9→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

[stderr] INFO:     Will watch for changes in these directories: ['C:\\Users\\MikeSwanson\\claude-projects\\Autocode-remix\\Autocode-fork\\backend']
[stderr] INFO:     Uvicorn running on http://127.0.0.1:8099 (Press CTRL+C to quit)
INFO:     Started reloader process [320620] using WatchFiles
[stderr] C:\Users\MikeSwanson\claude-projects\Autocode-remix\Autocode-fork\backend\app\routers\features.py:569: FastAPIDeprecationWarning: `regex` has been deprecated, please use `pattern` instead
  agent_id: str = Query(..., regex="^[AB]$", description="Agent ID (A or B)"),
[stderr] INFO:     Started server process [320696]
[stderr] INFO:     Waiting for application startup.
[stderr] INFO:     Application startup complete.


I notice the FastAPI deprecation warning now shows line 569 instead of 562, so the code is being reloaded. But I don't see the DEBUG print statements. Let me check if the print statements are actually being reached. Let me verify the endpoint is actually executing the updated code:


Check feature 19 details


Pending Feature 1

This is a pending feature

This is a pending feature


Feature 19 has `depends_on: []` which is correct. But somehow it's still detecting a cycle.

Wait, I see the issue now! In the `feature_depends_on` function:
```python
if feature_id == check_id:
    return True
```

When we call `feature_depends_on(19, 20, set())`:
- `feature_id = 19`, `check_id = 20`
- `19 == 20`? No... so that's not the issue.

Let me look at what value `feature_map[19].depends_on` returns - it might be `None` instead of `[]`:


Edit

    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")

        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
            """Check if feature_id depends (directly or indirectly) on check_id."""
            if feature_id == check_id:
                return True
            if feature_id in visited:
                return False
            visited.add(feature_id)

            feature = feature_map.get(feature_id)
            if not feature:
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {feature_id} has deps {deps}")
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
            if feature_depends_on(dep_id, target_id, set()):
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
                return True
        print(f"DEBUG: No cycle found")
        return False

    if has_circular_dependency(feature_id, request.depends_on):

    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        import sys
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}", file=sys.stderr)

        def feature_depends_on(fid: int, check_id: int, visited: set) -> bool:
            """Check if feature fid depends (directly or indirectly) on check_id."""
            print(f"DEBUG: feature_depends_on({fid}, {check_id}), visited={visited}", file=sys.stderr)
            if fid == check_id:
                print(f"DEBUG: {fid} == {check_id}, returning True (cycle found)", file=sys.stderr)
                return True
            if fid in visited:
                print(f"DEBUG: {fid} in visited, returning False", file=sys.stderr)
                return False
            visited.add(fid)

            feature = feature_map.get(fid)
            if not feature:
                print(f"DEBUG: Feature {fid} not in feature_map, returning False", file=sys.stderr)
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {fid} has deps={deps} (raw: {feature.depends_on})", file=sys.stderr)
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            print(f"DEBUG: Feature {fid} doesn't depend on {check_id}", file=sys.stderr)
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}", file=sys.stderr)
            result = feature_depends_on(dep_id, target_id, set())
            print(f"DEBUG: Result for {dep_id}: {result}", file=sys.stderr)
            if result:
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}", file=sys.stderr)
                return True
        print(f"DEBUG: No cycle found", file=sys.stderr)
        return False

    if has_circular_dependency(feature_id, request.depends_on):


<tool_use_error>File has not been read yet. Read it first before writing to it.</tool_use_error>

Error: File has not been read yet. Read it first before writing to it.


   484→                status_code=status.HTTP_400_BAD_REQUEST,
   485→                detail="A feature cannot depend on itself"
   486→            )
   487→
   488→    # Detect circular dependencies - check if any new dependency would create a path back to target
   489→    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
   490→        """Check if adding new_deps to target_id creates a cycle.
   491→
   492→        A cycle exists if any of the new dependencies eventually depend on target_id.
   493→        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
   494→        """
   495→        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")
   496→
   497→        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
   498→            """Check if feature_id depends (directly or indirectly) on check_id."""
   499→            if feature_id == check_id:
   500→                return True
   501→            if feature_id in visited:
   502→                return False
   503→            visited.add(feature_id)
   504→
   505→            feature = feature_map.get(feature_id)
   506→            if not feature:
   507→                return False
   508→
   509→            deps = feature.depends_on or []
   510→            print(f"DEBUG: Feature {feature_id} has deps {deps}")
   511→            for dep_id in deps:
   512→                if feature_depends_on(dep_id, check_id, visited):
   513→                    return True
   514→            return False
   515→
   516→        # Check: would any new dependency create a path back to target_id?
   517→        for dep_id in new_deps:
   518→            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
   519→            if feature_depends_on(dep_id, target_id, set()):
   520→                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
   521→                return True
   522→        print(f"DEBUG: No cycle found")
   523→        return False
   524→
   525→    if has_circular_dependency(feature_id, request.depends_on):
   526→        raise HTTPException(
   527→            status_code=status.HTTP_400_BAD_REQUEST,
   528→            detail="Circular dependency detected"
   529→        )
   530→
   531→    # Update the dependencies
   532→    target_feature.depends_on = request.depends_on
   533→    target_feature.updated_at = datetime.utcnow()
   534→
   535→    # Update the feature map for chain calculation
   536→    features = [f if f.id != feature_id else target_feature for f in features]
   537→
   538→    # Get the full dependency chain
   539→    chain = get_dependency_chain(feature_id, features)
   540→
   541→    # Check if any feature in the chain has an assigned agent
   542→    assigned_agent = None
   543→    for fid in chain:

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

                status_code=status.HTTP_400_BAD_REQUEST,
                detail="A feature cannot depend on itself"
            )

    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")

        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
            """Check if feature_id depends (directly or indirectly) on check_id."""
            if feature_id == check_id:
                return True
            if feature_id in visited:
                return False
            visited.add(feature_id)

            feature = feature_map.get(feature_id)
            if not feature:
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {feature_id} has deps {deps}")
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
            if feature_depends_on(dep_id, target_id, set()):
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
                return True
        print(f"DEBUG: No cycle found")
        return False

    if has_circular_dependency(feature_id, request.depends_on):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Circular dependency detected"
        )

    # Update the dependencies
    target_feature.depends_on = request.depends_on
    target_feature.updated_at = datetime.utcnow()

    # Update the feature map for chain calculation
    features = [f if f.id != feature_id else target_feature for f in features]

    # Get the full dependency chain
    chain = get_dependency_chain(feature_id, features)

    # Check if any feature in the chain has an assigned agent
    assigned_agent = None
    for fid in chain:


    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}")

        def feature_depends_on(feature_id: int, check_id: int, visited: set) -> bool:
            """Check if feature_id depends (directly or indirectly) on check_id."""
            if feature_id == check_id:
                return True
            if feature_id in visited:
                return False
            visited.add(feature_id)

            feature = feature_map.get(feature_id)
            if not feature:
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {feature_id} has deps {deps}")
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}")
            if feature_depends_on(dep_id, target_id, set()):
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}")
                return True
        print(f"DEBUG: No cycle found")
        return False

    if has_circular_dependency(feature_id, request.depends_on):

    # Detect circular dependencies - check if any new dependency would create a path back to target
    def has_circular_dependency(target_id: int, new_deps: List[int]) -> bool:
        """Check if adding new_deps to target_id creates a cycle.

        A cycle exists if any of the new dependencies eventually depend on target_id.
        For example: if we add dep 19 to feature 20, check if 19 depends on 20 (directly or indirectly).
        """
        import sys
        print(f"DEBUG: Checking circular dependency for target={target_id}, new_deps={new_deps}", file=sys.stderr, flush=True)

        def feature_depends_on(fid: int, check_id: int, visited: set) -> bool:
            """Check if feature fid depends (directly or indirectly) on check_id."""
            print(f"DEBUG: feature_depends_on({fid}, {check_id}), visited={visited}", file=sys.stderr, flush=True)
            if fid == check_id:
                print(f"DEBUG: {fid} == {check_id}, returning True (cycle found)", file=sys.stderr, flush=True)
                return True
            if fid in visited:
                print(f"DEBUG: {fid} in visited, returning False", file=sys.stderr, flush=True)
                return False
            visited.add(fid)

            feature = feature_map.get(fid)
            if not feature:
                print(f"DEBUG: Feature {fid} not in feature_map, returning False", file=sys.stderr, flush=True)
                return False

            deps = feature.depends_on or []
            print(f"DEBUG: Feature {fid} has deps={deps} (raw: {feature.depends_on})", file=sys.stderr, flush=True)
            for dep_id in deps:
                if feature_depends_on(dep_id, check_id, visited):
                    return True
            print(f"DEBUG: Feature {fid} doesn't depend on {check_id}", file=sys.stderr, flush=True)
            return False

        # Check: would any new dependency create a path back to target_id?
        for dep_id in new_deps:
            print(f"DEBUG: Checking if {dep_id} depends on {target_id}", file=sys.stderr, flush=True)
            result = feature_depends_on(dep_id, target_id, set())
            print(f"DEBUG: Result for {dep_id}: {result}", file=sys.stderr, flush=True)
            if result:
                print(f"DEBUG: Found cycle! {dep_id} depends on {target_id}", file=sys.stderr, flush=True)
                return True
        print(f"DEBUG: No cycle found", file=sys.stderr, flush=True)
        return False

    if has_circular_dependency(feature_id, request.depends_on):