feat: per-task on/off switches on /sync page for staged rollout

Adds evo_mirror_enabled and vk_mirror_enabled flags to SyncConfig.
Each of the three background tasks (Зеркало Эвотор / Зеркало ВК /
Синхронизация) can now be enabled independently from the /sync page.

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

web/routes/sync.py

@@ -3,7 +3,6 @@ from datetime import datetime, timezone
 
 from fastapi import APIRouter, Depends, Request
 from fastapi.responses import RedirectResponse
-
 from sqlalchemy.orm import Session
 
 from web.auth.session import get_current_user
@@ -21,10 +20,6 @@ def _render(request: Request, ctx: dict):
     return templates.TemplateResponse(ctx.pop("request"), "sync.html", ctx)
 
 
-def _now():
-    return datetime.now(timezone.utc).replace(tzinfo=None)
-
-
 @router.get("/sync")
 async def sync_get(request: Request, db: Session = Depends(get_db)):
     try:
@@ -48,8 +43,12 @@ async def sync_settings_post(request: Request, db: Session = Depends(get_db)):
         return RedirectResponse("/login", 303)
 
     form = await request.form()
-    raw_multiplier = str(form.get("price_multiplier", "1")).strip()
 
+    evo_mirror_enabled = form.get("evo_mirror_enabled") == "1"
+    vk_mirror_enabled = form.get("vk_mirror_enabled") == "1"
+    sync_enabled = form.get("is_enabled") == "1"
+
+    raw_multiplier = str(form.get("price_multiplier", "1")).strip()
     try:
         multiplier = float(raw_multiplier)
         if multiplier <= 0:
@@ -59,11 +58,16 @@ async def sync_settings_post(request: Request, db: Session = Depends(get_db)):
 
     config = db.query(SyncConfig).filter_by(user_id=user.id).first()
     if config:
+        config.evo_mirror_enabled = evo_mirror_enabled
+        config.vk_mirror_enabled = vk_mirror_enabled
+        config.is_enabled = sync_enabled
         config.price_multiplier = multiplier
     else:
         config = SyncConfig(
             user_id=user.id,
-            is_enabled=False,
+            evo_mirror_enabled=evo_mirror_enabled,
+            vk_mirror_enabled=vk_mirror_enabled,
+            is_enabled=sync_enabled,
             price_multiplier=multiplier,
         )
         db.add(config)