Example script: download every album's photos and metadata (closes #144)

`examples/download-albums.ts` logs in from `QUAK_EMAIL` and `QUAK_PASSWORD`, then walks every album from `await lib.fresh()`. For each photo it runs `photo.download()` to the photo's save path and writes `{savePath}.json`, which holds the photo's record and EXIF. For each album it writes `{dir}/albums/{collectionID}.json` with the album's name and its photos' save paths. A file is written only when its content changes, so a second run downloads and rewrites nothing.

The script opens the library with prefetching off, as `quak backup` does. The build type-checks `examples/`. The README says how to run it.

Model: opus-5-5
Co-authored-by: clawbot <sneak+clawbot@sneak.cloud>

tsconfig.json

@@ -18,5 +18,5 @@
         "sourceMap": true,
         "resolveJsonModule": true
     },
-    "include": ["src/**/*", "bin/**/*"]
+    "include": ["src/**/*", "bin/**/*", "examples/**/*"]
 }