Add upload queue UI with ExifTool metadata preview on pick.

Users can select images within configured limits, see per-row load status, and inspect raw ExifTool output before upload work continues.

frontend/package-lock.json

@@ -13,6 +13,7 @@
                 "@uswriting/exiftool": "1.0.9",
                 "axios": "^1.20.0",
                 "pinia": "^4.0.3",
+                "pretty-bytes": "^7.2.0",
                 "tailwindcss": "^4.3.3",
                 "vue": "^3.5.32",
                 "vue-router": "^4.6.4"
@@ -1924,6 +1925,18 @@
                 "node": "^10 || ^12 || >=14"
             }
         },
+        "node_modules/pretty-bytes": {
+            "version": "7.2.0",
+            "resolved": "https://registry.npmjs.org/pretty-bytes/-/pretty-bytes-7.2.0.tgz",
+            "integrity": "sha512-T2kroepGB5DRVbkN/nOpW03+VRWqdtJhZNuCW3wYk3chdPjgi4GcTBOaxWfHq1MIM0ypidxsSWbQaAiRpxnXmg==",
+            "license": "MIT",
+            "engines": {
+                "node": ">=20"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
         "node_modules/proxy-from-env": {
             "version": "2.1.0",
             "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-2.1.0.tgz",