release: v1.2.0 — unified images/ storage and legacy migration

Consolidate local images under data/images/, add docker migrate CLI,
startup index sync with orphan cleanup, and remove upload folder UI/API.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pichost",
-  "version": "1.1.5",
+  "version": "1.2.0",
   "description": "Self-hosted image hosting for your NAS / home server — Nuxt admin UI, local disk or S3-compatible storage, server-side WebP compression, referer protection, Twikoo/EasyImage compatible.",
   "homepage": "https://github.com/O96u/PicHost#readme",
   "repository": {
@@ -33,7 +33,8 @@
     "test": "vitest run",
     "test:watch": "vitest",
     "start": "node .output/server/index.mjs",
-    "reset-password": "node server/cli/reset-password.mjs"
+    "reset-password": "node server/cli/reset-password.mjs",
+    "migrate": "node server/cli/migrate-to-single-images.mjs"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.876.0",