chore: fix all ruff lint warnings (unused imports, unsorted imports, unused vars)

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

web/src/beanflows/admin/cms_routes.py

@@ -8,7 +8,7 @@ from pathlib import Path
 
 from quart import Blueprint, flash, g, redirect, render_template, request, url_for
 
-from ..core import execute, fetch_all, fetch_one, csrf_protect
+from ..core import csrf_protect, execute, fetch_all, fetch_one
 
 bp = Blueprint(
     "cms",
@@ -23,7 +23,8 @@ def admin_required(f):
     async def decorated(*args, **kwargs):
         if "admin" not in (g.get("user") or {}).get("roles", []):
             await flash("Admin access required.", "error")
-            from quart import redirect as _redirect, url_for as _url_for
+            from quart import redirect as _redirect
+            from quart import url_for as _url_for
             return _redirect(_url_for("auth.login"))
         return await f(*args, **kwargs)
     return decorated
@@ -71,7 +72,7 @@ async def list_template_data(template_id: int) -> list[dict]:
 
 async def generate_article_from_data(data_row: dict, tmpl: dict) -> int | None:
     """Generate (or regenerate) a single article from a template_data row."""
-    from jinja2 import Environment, BaseLoader
+    from jinja2 import BaseLoader, Environment
 
     try:
         data = json.loads(data_row["data_json"])

web/src/beanflows/billing/routes.py

@@ -9,12 +9,10 @@ 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
+from quart import Blueprint, flash, g, jsonify, redirect, render_template, request, session, url_for
 
-from ..core import config, fetch_one, fetch_all, execute
 from ..auth.routes import login_required
-
-
+from ..core import config, execute, fetch_one
 
 logger = logging.getLogger(__name__)
 

web/src/beanflows/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] = {}