feat: server-driven configurator settings via qt_settings

Replaces hardcoded JS category filters and config-type buttons with
server-pushed settings synced from qt_settings (MariaDB) → local_qt_settings (SQLite).

- new table local_qt_settings (AutoMigrate) — synced after component sync
- GET /api/configurator-settings returns config_types, tab_config,
  always_visible_tabs, required_categories with hardcoded fallbacks
- new-config modal: type buttons rendered from server data (Сервер/СХД static fallback)
- configurator: TAB_CONFIG and category filter driven by server; required-category badge on tabs
- SyncQtSettings wired into SyncComponents and SyncAll handlers (non-fatal on old server)
- bible-local/server-contract-qt-settings.md — contract for server-side agent
- page titles: OFS → QFS

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

internal/handlers/sync.go

@@ -203,6 +203,10 @@ func (h *SyncHandler) SyncComponents(c *gin.Context) {
 	_ = h.localDB.SetComponentSyncResult("ok", "", now)
 	h.localDB.AppendSyncLog("components", "ok", "", result.TotalSynced, now, result.Duration.Milliseconds())
 
+	if err := h.localDB.SyncQtSettings(mariaDB); err != nil {
+		slog.Warn("qt_settings sync failed", "error", err)
+	}
+
 	c.JSON(http.StatusOK, SyncResultResponse{
 		Success:  true,
 		Message:  "Components synced successfully",
@@ -339,6 +343,10 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 	h.localDB.AppendSyncLog("components", "ok", "", compResult.TotalSynced, compNow, compResult.Duration.Milliseconds())
 	componentsSynced = compResult.TotalSynced
 
+	if err := h.localDB.SyncQtSettings(mariaDB); err != nil {
+		slog.Warn("qt_settings sync failed", "error", err)
+	}
+
 	// Sync pricelists
 	plNow := time.Now()
 	pricelistsSynced, err = h.syncService.SyncPricelists()