fix ruff lint errors across all source files

Auto-fixed import sorting (I001) and unused imports (F401) via ruff --fix.
Manually fixed unused variable month_ago (F841) and lambda assignment (E731).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

padelnomics/src/padelnomics/admin/routes.py

@@ -2,13 +2,13 @@
 Admin domain: password-protected admin panel for managing users, tasks, etc.
 """
 import secrets
-from functools import wraps
 from datetime import datetime, timedelta
+from functools import wraps
 from pathlib import Path
 
-from quart import Blueprint, render_template, request, redirect, url_for, flash, session, g
+from quart import Blueprint, flash, redirect, render_template, request, session, url_for
 
-from ..core import config, fetch_one, fetch_all, execute, csrf_protect
+from ..core import config, csrf_protect, execute, fetch_all, fetch_one
 
 # Blueprint with its own template folder
 bp = Blueprint(
@@ -42,8 +42,6 @@ async def get_dashboard_stats() -> dict:
     now = datetime.utcnow()
     today = now.date().isoformat()
     week_ago = (now - timedelta(days=7)).isoformat()
-    month_ago = (now - timedelta(days=30)).isoformat()
-    
     users_total = await fetch_one("SELECT COUNT(*) as count FROM users WHERE deleted_at IS NULL")
     users_today = await fetch_one(
         "SELECT COUNT(*) as count FROM users WHERE created_at >= ? AND deleted_at IS NULL",

padelnomics/src/padelnomics/app.py

@@ -1,10 +1,11 @@
 """
 Padelnomics - Application factory and entry point.
 """
-from quart import Quart, g, session
 from pathlib import Path
 
-from .core import config, init_db, close_db, get_csrf_token, setup_request_id
+from quart import Quart, g, session
+
+from .core import close_db, config, get_csrf_token, init_db, setup_request_id
 
 
 def create_app() -> Quart:
@@ -76,13 +77,13 @@ def create_app() -> Quart:
             return {"status": "unhealthy", "db": str(e)}, 500
 
     # Register blueprints
+    from .admin.routes import bp as admin_bp
     from .auth.routes import bp as auth_bp
     from .billing.routes import bp as billing_bp
     from .dashboard.routes import bp as dashboard_bp
-    from .public.routes import bp as public_bp
-    from .planner.routes import bp as planner_bp
     from .leads.routes import bp as leads_bp
-    from .admin.routes import bp as admin_bp
+    from .planner.routes import bp as planner_bp
+    from .public.routes import bp as public_bp
 
     app.register_blueprint(public_bp)
     app.register_blueprint(auth_bp)

padelnomics/src/padelnomics/auth/routes.py

@@ -2,13 +2,13 @@
 Auth domain: magic link authentication, user management, decorators.
 """
 import secrets
-from functools import wraps
 from datetime import datetime, timedelta
+from functools import wraps
 from pathlib import Path
 
-from quart import Blueprint, render_template, request, redirect, url_for, session, flash, g
+from quart import Blueprint, flash, g, redirect, render_template, request, session, url_for
 
-from ..core import config, fetch_one, fetch_all, execute, csrf_protect
+from ..core import config, csrf_protect, execute, fetch_one
 
 # Blueprint with its own template folder
 bp = Blueprint(

padelnomics/src/padelnomics/billing/routes.py

@@ -8,18 +8,11 @@ from datetime import datetime
 from functools import wraps
 from pathlib import Path
 
-from quart import Blueprint, render_template, request, redirect, url_for, flash, g, jsonify, session
-
 import httpx
-
-
-from ..core import config, fetch_one, fetch_all, execute
-
-from ..core import verify_hmac_signature
+from quart import Blueprint, flash, g, jsonify, redirect, render_template, request, session, url_for
 
 from ..auth.routes import login_required
-
-
+from ..core import config, execute, fetch_one, verify_hmac_signature
 
 # Blueprint with its own template folder
 bp = Blueprint(

padelnomics/src/padelnomics/core.py

@@ -1,18 +1,19 @@
 """
 Core infrastructure: database, config, email, and shared utilities.
 """
-import os
-import secrets
 import hashlib
 import hmac
+import os
+import secrets
+from contextvars import ContextVar
+from datetime import datetime, timedelta
+from functools import wraps
+from pathlib import Path
+
 import aiosqlite
 import httpx
-from pathlib import Path
-from functools import wraps
-from datetime import datetime, timedelta
-from contextvars import ContextVar
-from quart import request, session, g
 from dotenv import load_dotenv
+from quart import g, request, session
 
 load_dotenv()
 

padelnomics/src/padelnomics/dashboard/routes.py

@@ -4,10 +4,10 @@ Dashboard domain: user dashboard and settings.
 from datetime import datetime
 from pathlib import Path
 
-from quart import Blueprint, render_template, request, redirect, url_for, flash, g
+from quart import Blueprint, flash, g, redirect, render_template, request, url_for
 
-from ..core import fetch_one, csrf_protect, soft_delete
 from ..auth.routes import login_required, update_user
+from ..core import csrf_protect, fetch_one, soft_delete
 
 bp = Blueprint(
     "dashboard",

padelnomics/src/padelnomics/leads/routes.py

@@ -4,10 +4,10 @@ Leads domain: capture interest in court suppliers and financing.
 from datetime import datetime
 from pathlib import Path
 
-from quart import Blueprint, render_template, request, flash, redirect, url_for, g
+from quart import Blueprint, flash, g, redirect, render_template, request, url_for
 
-from ..core import config, execute, fetch_one, csrf_protect, send_email
 from ..auth.routes import login_required
+from ..core import config, csrf_protect, execute, fetch_one, send_email
 
 bp = Blueprint(
     "leads",

padelnomics/src/padelnomics/migrations/migrate.py

@@ -1,10 +1,10 @@
 """
 Simple migration runner. Runs schema.sql against the database.
 """
-import sqlite3
-from pathlib import Path
 import os
+import sqlite3
 import sys
+from pathlib import Path
 
 # Add parent to path for imports
 sys.path.insert(0, str(Path(__file__).parent.parent.parent.parent))

padelnomics/src/padelnomics/planner/calculator.py

@@ -6,9 +6,11 @@ model is no longer exposed in client-side JavaScript.
 """
 import math
 
+
 # JS-compatible rounding: half-up (0.5 rounds to 1), not Python's
 # banker's rounding (round-half-even).
-_round = lambda n: math.floor(n + 0.5)
+def _round(n):
+    return math.floor(n + 0.5)
 
 
 # -- Default state (mirrors the JS `S` object) --

padelnomics/src/padelnomics/planner/routes.py

@@ -5,10 +5,10 @@ import json
 from datetime import datetime
 from pathlib import Path
 
-from quart import Blueprint, render_template, request, g, jsonify
+from quart import Blueprint, g, jsonify, render_template, request
 
-from ..core import fetch_one, fetch_all, execute, csrf_protect
 from ..auth.routes import login_required
+from ..core import csrf_protect, execute, fetch_all, fetch_one
 from .calculator import calc, validate_state
 
 bp = Blueprint(

padelnomics/src/padelnomics/public/routes.py

@@ -3,7 +3,7 @@ Public domain: landing page, marketing pages, legal pages.
 """
 from pathlib import Path
 
-from quart import Blueprint, render_template, Response
+from quart import Blueprint, Response, render_template
 
 from ..core import config
 

padelnomics/src/padelnomics/worker.py

@@ -6,8 +6,7 @@ import json
 import traceback
 from datetime import datetime, timedelta
 
-from .core import config, init_db, fetch_one, fetch_all, execute, send_email
-
+from .core import config, execute, fetch_all, init_db, send_email
 
 # Task handlers registry
 HANDLERS: dict[str, callable] = {}