Use @inquirer/prompts for interactive login input

Replaces the hand-rolled readline/raw-mode password prompt with
@inquirer/prompts (input + password). The manual approach broke in
bun-compiled binaries because bun doesn't properly re-open stdin
after closing a readline instance. inquirer handles TTY, raw mode,
and password masking correctly across both node and bun runtimes.

package.json

@@ -38,6 +38,7 @@
         "vitest": "2.1.9"
     },
     "dependencies": {
+        "@inquirer/prompts": "8.5.2",
         "commander": "14.0.3",
         "env-paths": "4.0.0",
         "exif-reader": "2.0.3",