feat(db): 控制面 PG 定时备份、迁移前快照与原子恢复

cmd/felis/tui_migration.go

@@ -3,8 +3,10 @@ package main
 import (
 	"context"
 	"fmt"
+	"io"
 	"time"
 
+	"felis.lolicon.best/internal/dbbackup"
 	"felis.lolicon.best/internal/store"
 )
 
@@ -12,7 +14,7 @@ import (
 // applied count. Used by the preflight stage to self-heal a freshly bootstrapped
 // (or upgraded) database.
 func applyMigrations(dbURL string) (int, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
 	defer cancel()
 	drv, err := store.Open(ctx, dbURL)
 	if err != nil {
@@ -23,6 +25,11 @@ func applyMigrations(dbURL string) (int, error) {
 	if err != nil {
 		return 0, err
 	}
+	// Same guard as `felis migrate up`: never roll a populated database forward
+	// without a snapshot to roll back to.
+	if _, err := preMigrateBackup(ctx, drv, migrations, dbURL, dbbackup.DefaultDir, io.Discard); err != nil {
+		return 0, fmt.Errorf("pre-migration backup: %w", err)
+	}
 	if _, err := store.Up(ctx, drv, migrations); err != nil {
 		return 0, err
 	}