chore: clean up unused imports and sort import blocks

Remove unused imports and organize import statements to pass ruff
linting checks:

- mcp_server/feature_mcp.py: Remove unused imports (are_dependencies_satisfied,
  get_blocking_dependencies) and alphabetize import block
- parallel_orchestrator.py: Remove unused imports (time, Awaitable) and
  add blank lines between import groups per PEP 8
- server/routers/features.py: Alphabetize imports in dependency resolver

These changes were identified by running `ruff check .` and auto-fixed
with `--fix` flag.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mcp_server/feature_mcp.py

@@ -37,14 +37,12 @@ from sqlalchemy.sql.expression import func
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
 from api.database import Feature, create_database
-from api.migration import migrate_json_to_sqlite
 from api.dependency_resolver import (
-    would_create_circular_dependency,
-    are_dependencies_satisfied,
-    get_blocking_dependencies,
-    compute_scheduling_scores,
     MAX_DEPENDENCIES_PER_FEATURE,
+    compute_scheduling_scores,
+    would_create_circular_dependency,
 )
+from api.migration import migrate_json_to_sqlite
 
 # Configuration from environment
 PROJECT_DIR = Path(os.environ.get("PROJECT_DIR", ".")).resolve()

parallel_orchestrator.py

@@ -15,9 +15,8 @@ import os
 import subprocess
 import sys
 import threading
-import time
 from pathlib import Path
-from typing import Callable, Awaitable
+from typing import Callable
 
 import psutil
 
@@ -499,7 +498,9 @@ async def run_parallel_orchestrator(
 def main():
     """Main entry point for parallel orchestration."""
     import argparse
+
     from dotenv import load_dotenv
+
     from registry import DEFAULT_MODEL, get_project_path
 
     load_dotenv()

server/routers/features.py

@@ -575,7 +575,7 @@ def _get_dependency_resolver():
     root = Path(__file__).parent.parent.parent
     if str(root) not in sys.path:
         sys.path.insert(0, str(root))
-    from api.dependency_resolver import would_create_circular_dependency, MAX_DEPENDENCIES_PER_FEATURE
+    from api.dependency_resolver import MAX_DEPENDENCIES_PER_FEATURE, would_create_circular_dependency
     return would_create_circular_dependency, MAX_DEPENDENCIES_PER_FEATURE