Add batch upload configure modal and settings mapping utilities.

Users configure share mode, expiry, and max views before upload; batch summary confirms choices above the queue.

frontend/package-lock.json

@@ -12,6 +12,7 @@
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                 "@uswriting/exiftool": "1.0.9",
                 "axios": "^1.20.0",
+                "dayjs": "^1.11.23",
                 "hash-wasm": "^4.12.0",
                 "pinia": "^4.0.3",
                 "pretty-bytes": "^7.2.0",
@@ -2199,6 +2200,12 @@
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             "license": "MIT"
         },
+        "node_modules/dayjs": {
+            "version": "1.11.23",
+            "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.11.23.tgz",
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+            "license": "MIT"
+        },
         "node_modules/debug": {
             "version": "4.4.3",
             "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",