fix(security): validate volumeName and escape volume-backup file names

Add VOLUME_NAME_REGEX (Docker volume-name format) and enforce it on volumeName in
create/update/runManually — a legit volume name never contains shell metacharacters,
so this blocks injection across every docker run/rm/rclone sink at once. Escape the
user-supplied backupFileName and the mount volumeName in database rebuild with quote().

packages/server/src/db/schema/utils.ts

@@ -41,6 +41,12 @@ export const APP_NAME_REGEX = /^[a-zA-Z0-9._-]+$/;
 export const APP_NAME_MESSAGE =
 	"App name can only contain letters, numbers, dots, underscores and hyphens";
 
+/** Docker volume name: must start alphanumeric, then letters/numbers/._- only. Safe for shell. */
+export const VOLUME_NAME_REGEX = /^[a-zA-Z0-9][a-zA-Z0-9_.-]*$/;
+
+export const VOLUME_NAME_MESSAGE =
+	"Volume name must start with a letter or number and contain only letters, numbers, dots, underscores and hyphens";
+
 /** Database password: blocks shell-dangerous characters like $ ! ' " \ / and spaces. */
 export const DATABASE_PASSWORD_REGEX =
 	/^[a-zA-Z0-9@#%^&*()_+\-=[\]{}|;:,.<>?~`]*$/;

packages/server/src/db/schema/volume-backups.ts

@@ -14,7 +14,11 @@ import { serviceType } from "./mount";
 import { mysql } from "./mysql";
 import { postgres } from "./postgres";
 import { redis } from "./redis";
-import { generateAppName } from "./utils";
+import {
+	generateAppName,
+	VOLUME_NAME_MESSAGE,
+	VOLUME_NAME_REGEX,
+} from "./utils";
 
 export const volumeBackups = pgTable("volume_backup", {
 	volumeBackupId: text("volumeBackupId")
@@ -113,7 +117,9 @@ export const volumeBackupsRelations = relations(
 	}),
 );
 
-export const createVolumeBackupSchema = createInsertSchema(volumeBackups).omit({
+export const createVolumeBackupSchema = createInsertSchema(volumeBackups, {
+	volumeName: z.string().regex(VOLUME_NAME_REGEX, VOLUME_NAME_MESSAGE),
+}).omit({
 	volumeBackupId: true,
 });