quak get and get-thumb on an empty cache stop fetching collections once they find the file (closes #222)

`quak get` and `quak get-thumb` used to wait for a refresh, which on an
empty cache fetched the files of every collection. Now, on an empty
cache, `freshFile` reads the collection list, then one collection's
files at a time, and stops at the first that holds the file. That search
stores nothing. Once the cache holds the account's collections,
`freshFile` refreshes as before and looks the file up in the cache. The
commands fetch the content through the new `Library.originalOf()` and
`Library.thumbnailOf()`, which take the file record itself, since the
store may not hold it.

On an empty cache they no longer print a refresh's progress lines. The
`-q` test that relied on `get` refreshing now runs
`helper fix-missing-thumbnails`.

Model: opus-5-5

TODO.md

@@ -26,15 +26,6 @@ declares one.
 
 # Completed Steps
 
-- 2026-10-26: On an empty cache, `quak helper fix-missing-thumbnails --file`
-  stops fetching collections' files once it finds every file it names
-  (https://git.eeqj.de/sneak/quak/issues/223). It used to wait for a refresh,
-  which on an empty cache fetched the files of every collection. Now it reads
-  the collection list, then one collection's files at a time, the most recently
-  updated first. It stores none of the collections or file records it reads. It
-  fetches each original through `lib.originalOf()`, which keeps it in the cache.
-  Once the cache holds the account's collections, it still waits for a refresh.
-
 - 2026-10-26: On an empty cache, `quak get` and `quak get-thumb` stop fetching
   collections' files once they find the file
   (https://git.eeqj.de/sneak/quak/issues/222). They used to wait for a refresh,

src/cli-commands.ts

@@ -37,16 +37,9 @@ import {
     thumbnailName,
 } from "./cli-output.js";
 import { type Log, logRefresh } from "./cli-log.js";
-import {
-    cachedFilesByID,
-    freshCollections,
-    freshFiles,
-    freshFile,
-    freshFilesByID,
-} from "./cli-read.js";
+import { freshCollections, freshFiles, freshFile } from "./cli-read.js";
 import { withExtension } from "./filename.js";
 import { runMetadataBackup } from "./metadata-backup.js";
-import type { Collection, EnteFile } from "./model/types.js";
 import { listMissingThumbnails, fixMissingThumbnails } from "./thumbnails.js";
 
 export interface CliContext {
@@ -140,9 +133,8 @@ const readLibraryClient = (client: Client): LibraryClient => ({
 // not start downloading the whole account. No refresh starts as the library
 // opens or on a timer. Each command asks for the refresh it needs.
 // `collections` and `files` with a collection ID need none (issues #210 and
-// #217). Nor do `get` and `get-thumb` on an empty cache (issue #222). Nor does
-// `helper fix-missing-thumbnails --file` on an empty cache (issue #223). While
-// a refresh runs, each collection whose files it has fetched is logged, so a
+// #217). Nor do `get` and `get-thumb` on an empty cache (issue #222). While a
+// refresh runs, each collection whose files it has fetched is logged, so a
 // large account shows progress rather than nothing.
 const openReadLibrary = (ctx: CliContext, client: Client): Promise<Library> =>
     Library.open({
@@ -573,13 +565,10 @@ export const fixMissingThumbnailsCommand = async (
     }
     const lib = await openReadLibrary(ctx, client);
     try {
-        let found: Map<number, { file: EnteFile; collection: Collection }>;
-        if (fileIDs.length > 0) {
-            found = await freshFilesByID(lib, fileIDs);
-        } else {
-            // Refresh first so files added since the cache was written are
-            // checked; a failed refresh throws.
-            await lib.fresh();
+        // Refresh first so files added since the cache was written are found;
+        // a failed refresh throws.
+        await lib.fresh();
+        if (fileIDs.length === 0) {
             ctx.log("info", "Scanning for missing thumbnails...");
             const missing = await listMissingThumbnails(
                 lib,
@@ -592,14 +581,12 @@ export const fixMissingThumbnailsCommand = async (
                 return 0;
             }
             ctx.log("info", `Found ${fileIDs.length} file(s) to fix.`);
-            found = cachedFilesByID(lib, fileIDs);
         }
 
         const results = await fixMissingThumbnails(
             lib,
             client,
             fileIDs,
-            found,
             (msg, level) => ctx.log(level ?? "info", msg),
         );
 

src/cli-log.ts

@@ -1,18 +1,15 @@
 // The CLI's log level, and the one function the commands write stderr lines
 // through.
 //
-// Every line quak logs goes to stderr, at one of six levels, from the
-// quietest: fatal, error, warning, info, debug, trace. A run prints the lines
-// at its own level and at every quieter one. Its level is info unless `-v` or
-// `-q` asks for another (see "What quak prints" in the README). A command that
-// runs and exits non-zero logs a fatal line saying why, so even `-q`, which
-// prints only fatal lines, never leaves such an exit unexplained. An error
+// Every line quak prints on stderr is a log line at one of six levels, from
+// the quietest: fatal, error, warning, info, debug, trace. A run prints the
+// lines at its own level and at every quieter one. Its level is info unless
+// `-v` or `-q` asks for another (see "CLI surface" in the README). Every
+// command that exits non-zero logs a fatal line saying why, so even `-q`, which
+// prints only fatal lines, never leaves a non-zero exit unexplained. An error
 // line reports something that failed, such as a file or an album, and a
 // warning something that did not fail but needs the user's attention. stdout
-// carries a command's output and the prompts of `login`, and is not a log.
-// Two things on stderr are not log lines: the `error:` message for a
-// command line that quak cannot parse, and the usage printed when no command
-// is given.
+// carries only a command's output and is not a log.
 //
 // The library itself writes no lines: its layers report through callbacks, and
 // the CLI logs what they report. `logRequests` gives the API client options

src/cli-read.ts

@@ -12,8 +12,6 @@
 // list too, then that one collection's files through `Library.freshFiles()`
 // (issue #217). On an empty cache, `get` and `get-thumb` read that list, then
 // one collection's files at a time, until they find the file (issue #222).
-// `helper fix-missing-thumbnails --file` does the same until it finds every
-// file it names (issue #223).
 //
 // `collections` and `files` with a collection ID list in the server's order.
 // `files` without one lists in the library's own enumeration order
@@ -92,59 +90,3 @@ export const freshFile = async (
     }
     return undefined;
 };
-
-// The most recently updated collection first, and the higher ID first on a
-// tie. `Library.albums.list()` lists albums in this order.
-const byNewestCollection = (a: Collection, b: Collection): number =>
-    b.updationTime - a.updationTime || b.id - a.id;
-
-// Each file named by `fileIDs` that the cache holds, mapped to its record and
-// the collection it was found in. Collections are searched in
-// `byNewestCollection` order, and a file is found in the first that holds it.
-// So `helper fix-missing-thumbnails` names a file after the same album as
-// `helper list-missing-thumbnails`. It reads the cache alone, so the caller
-// refreshes first.
-export const cachedFilesByID = (
-    lib: FreshReadLibrary,
-    fileIDs: number[],
-): Map<number, { file: EnteFile; collection: Collection }> => {
-    const wanted = new Set(fileIDs);
-    const found = new Map<number, { file: EnteFile; collection: Collection }>();
-    const collections = [...lib.listCollections()].sort(byNewestCollection);
-    for (const collection of collections) {
-        for (const file of lib.listFiles(collection.id)) {
-            if (wanted.has(file.id) && !found.has(file.id)) {
-                found.set(file.id, { file, collection });
-            }
-        }
-    }
-    return found;
-};
-
-// Each file named by `fileIDs` as the server holds it now, mapped to its record
-// and collection as `cachedFilesByID` maps it. When the cache holds the
-// account's collections, it refreshes and looks the files up in the cache. On
-// an empty cache, it reads the collection list, then one collection's files at
-// a time, and stops once it has found every file. That search stores nothing.
-export const freshFilesByID = async (
-    lib: FreshReadLibrary,
-    fileIDs: number[],
-): Promise<Map<number, { file: EnteFile; collection: Collection }>> => {
-    // Only a refresh stores collections, so a cache holding any holds them all.
-    if (lib.listCollections().length > 0) {
-        await lib.fresh();
-        return cachedFilesByID(lib, fileIDs);
-    }
-    const wanted = new Set(fileIDs);
-    const found = new Map<number, { file: EnteFile; collection: Collection }>();
-    const collections = await lib.freshCollections();
-    for (const collection of [...collections].sort(byNewestCollection)) {
-        if (found.size === wanted.size) break;
-        for (const file of await lib.freshFiles(collection)) {
-            if (wanted.has(file.id) && !found.has(file.id)) {
-                found.set(file.id, { file, collection });
-            }
-        }
-    }
-    return found;
-};

src/thumbnails.ts

@@ -5,7 +5,7 @@ import type { Client } from "./client.js";
 import type { Library } from "./library/index.js";
 import { ApiError } from "./api/client.js";
 import { encryptBlob, toBase64 } from "./crypto/index.js";
-import type { Collection, EnteFile } from "./model/types.js";
+import type { EnteFile } from "./model/types.js";
 
 // The server refuses a thumbnail larger than the one it already records for the
 // file (`thumbnail.size`, the encrypted size), so these encodings are tried
@@ -226,18 +226,16 @@ const encryptThumbnailWithin = (
     return undefined;
 };
 
-// Regenerate and upload a thumbnail for each requested file. `found` holds the
-// record of each requested file that a collection holds, and the collection it
-// was found in. Each original is read through the library's content cache, by
-// `lib.originalOf(file)`. The new thumbnail is a JPEG, encrypted under the
-// file's own key. It is uploaded, then registered with the server. Each file is
+// Regenerate and upload a thumbnail for each requested file. Originals are read
+// through the library's content cache (`photo.original()`); the generated
+// thumbnail is JPEG-encoded, encrypted under the file's own key, and registered
+// with the server — the encrypt-and-upload path is unchanged. Each file is
 // resolved to one outcome (fixed / skipped / failed) and a failure on one file
 // never stops the others.
 export const fixMissingThumbnails = async (
     lib: Library,
     client: Client,
     fileIDs: number[],
-    found: Map<number, { file: EnteFile; collection: Collection }>,
     onProgress?: ProgressCallback,
 ): Promise<ThumbnailFixResult[]> => {
     const log = onProgress ?? (() => {});
@@ -245,8 +243,31 @@ export const fixMissingThumbnails = async (
     const api = client.getApiClient();
     const { userID } = client.whoami();
 
+    // Resolve each requested fileID to its file record and owning album by
+    // enumerating the library, each file taken from the first album that holds
+    // it. The raw `EnteFile` carries the per-file key the thumbnail is
+    // encrypted under, which the projected records deliberately do not.
+    const wanted = new Set(fileIDs);
+    const fileMap = new Map<
+        number,
+        { file: EnteFile; collectionName: string }
+    >();
+    for (const album of lib.albums.list()) {
+        for (const photo of album.photos.list()) {
+            if (!wanted.has(photo.fileID) || fileMap.has(photo.fileID))
+                continue;
+            const file = lib.getFile(album.collectionID, photo.fileID);
+            if (file) {
+                fileMap.set(photo.fileID, {
+                    file,
+                    collectionName: album.name,
+                });
+            }
+        }
+    }
+
     for (const fileID of fileIDs) {
-        const entry = found.get(fileID);
+        const entry = fileMap.get(fileID);
         if (!entry) {
             results.push({
                 fileID,
@@ -258,8 +279,7 @@ export const fixMissingThumbnails = async (
             continue;
         }
 
-        const { file } = entry;
-        const collectionName = entry.collection.name;
+        const { file, collectionName } = entry;
         const title = file.metadata.title;
 
         const skipReason = reasonToSkip(file, userID);
@@ -277,10 +297,15 @@ export const fixMissingThumbnails = async (
         const maxSize = file.thumbnail.size!;
 
         try {
+            const photo = lib.photos.byID({ fileID });
+            if (!photo) {
+                throw new Error("file not present in the library cache");
+            }
+
             log(
                 `[${collectionName}] Downloading ${title} for thumbnail generation...`,
             );
-            const { path } = await lib.originalOf(file);
+            const { path } = await photo.original();
             const fileBytes = new Uint8Array(readFileSync(path));
 
             if (!isJpeg(fileBytes)) {

test/cli/backup-end-to-end.test.ts

@@ -418,7 +418,7 @@ describe("the first backup of the account", () => {
         expect(downloads.sort()).toEqual([100, 200, 300]);
     });
 
-    // The tree under "The backup directory" in the README. Each original is at
+    // The tree "Backup layout" in the README describes. Each original is at
     // its save path, `YYYY/YYYY-MM/YYYY-MM-DD/YYYY-MM-DD.<fileID>.<ext>`, with
     // the extension of its title; the live photo is its image and its video,
     // each with the extension it had inside the ZIP, and a `.livephoto.json`

test/cli/commands.test.ts

@@ -1353,23 +1353,6 @@ describe("helper fix-missing-thumbnails", () => {
         ).toBe(1);
         expect(stderr.text).toBe(last);
     });
-
-    // beach.jpg (100) is in Vacation (1) and Work (2), both updated at the same
-    // time. The fixer names a file after the first album holding it in the
-    // order of `Library.albums.list()`. On a tie, the album with the higher ID
-    // comes first, so beach.jpg is named after Work.
-    it("names a photo in two albums after the same album on an empty cache as on a cache that holds the account", async () => {
-        const ctx = context(fakeClient({ beachInWork: true }));
-        const opts = { file: ["100"], json: true };
-        const inWork = [{ fileID: 100, collection: "Work", status: "skipped" }];
-        expect(await fixMissingThumbnailsCommand(ctx, opts)).toBe(0);
-        expect(JSON.parse(stdout.text)).toMatchObject(inWork);
-
-        expect(await filesCommand(ctx, undefined, {})).toBe(0);
-        stdout.text = "";
-        expect(await fixMissingThumbnailsCommand(ctx, opts)).toBe(0);
-        expect(JSON.parse(stdout.text)).toMatchObject(inWork);
-    });
 });
 
 describe("backup-metadata --exif", () => {
@@ -1589,11 +1572,11 @@ describe("an ID given on the command line", () => {
 // An account with many albums (issues #210, #217 and #222). On an empty cache
 // `collections`, `files` with a collection ID and `get` used to wait for a
 // refresh that fetched and decrypted the files of every album, one album after
-// another. So did `helper fix-missing-thumbnails --file` (issue #223). On such
-// an account they seemed to hang. The account here has 40 albums of one photo
-// each, encrypted as Ente's clients encrypt them, on the fake Ente server of
-// `test/ente-server.ts`. The tests record the path and query of each request
-// quak sends. The session is the one logging in to that server saves.
+// another. On such an account they seemed to hang. The account here has 40
+// albums of one photo each, encrypted as Ente's clients encrypt them, on the
+// fake Ente server of `test/ente-server.ts`. The tests record the path and query
+// of each request quak sends. The session is the one logging in to that server
+// saves.
 describe("an account with many albums", () => {
     const ALBUMS = 40;
     const PASSWORD = "many-albums";
@@ -1616,9 +1599,7 @@ describe("an account with many albums", () => {
 
     // A photo in album `collectionID` as the server sends it, and its original
     // encrypted as the server stores it. The original's bytes are the title.
-    // These tests fetch no thumbnail. The server records a thumbnail size, so
-    // `helper fix-missing-thumbnails` downloads the original before it skips
-    // the photo as not a JPEG.
+    // These tests fetch no thumbnail.
     const photoRow = (photo: {
         id: number;
         collectionID: number;
@@ -1657,7 +1638,6 @@ describe("an account with many albums", () => {
             },
             file: { decryptionHeader: toBase64(original.header) },
             thumbnail: { decryptionHeader: "" },
-            info: { thumbSize: 1000 },
             updationTime: photo.updationTime,
         };
         return { row, original: original.ciphertext };
@@ -1875,81 +1855,6 @@ describe("an account with many albums", () => {
         expect(requests).toEqual(["/collections/v2?sinceTime=1"]);
     });
 
-    // The helper searches the most recently updated album first. All 40 were
-    // updated at the same time, and on a tie the higher ID comes first. Photo
-    // 3900 is in album 39, so the helper asks for no file of album 38 or
-    // earlier. The last request downloads the photo's original.
-    it("fix-missing-thumbnails --file on an empty cache asks for the albums' files only until one holds the photo", async () => {
-        const opts = { file: ["3900"], json: true };
-        expect(await fixMissingThumbnailsCommand(accountContext(), opts)).toBe(
-            0,
-        );
-
-        const reason =
-            "unsupported image format (only baseline JPEG can be regenerated)";
-        expect(JSON.parse(stdout.text)).toEqual([
-            {
-                fileID: 3900,
-                title: "photo-39.jpg",
-                collection: "Album 39",
-                status: "skipped",
-                reason,
-            },
-        ]);
-        expect(stderr.text).toBe(
-            "[Album 39] Downloading photo-39.jpg for thumbnail generation...\n" +
-                `[Album 39] Skipping photo-39.jpg: ${reason}\n`,
-        );
-        expect(requests).toEqual([
-            "/collections/v2?sinceTime=0",
-            "/collections/v2/diff?collectionID=40&sinceTime=0",
-            "/collections/v2/diff?collectionID=39&sinceTime=0",
-            "/?fileID=3900",
-        ]);
-        expect(existsSync(join(root, "cache", "metadata.json"))).toBe(false);
-    });
-
-    // `files` first fills the cache, so the helper waits for a refresh. No
-    // album has changed since, so the refresh asks for no album's files.
-    it("fix-missing-thumbnails --file on a cache that holds the account asks for no unchanged album's files, also for a photo in no album", async () => {
-        const ctx = accountContext();
-        expect(await filesCommand(ctx, undefined, {})).toBe(0);
-        requests.length = 0;
-        stdout.text = "";
-        stderr.text = "";
-
-        const opts = { file: ["3900"], json: true };
-        expect(await fixMissingThumbnailsCommand(ctx, opts)).toBe(0);
-        const reason =
-            "unsupported image format (only baseline JPEG can be regenerated)";
-        expect(JSON.parse(stdout.text)).toEqual([
-            {
-                fileID: 3900,
-                title: "photo-39.jpg",
-                collection: "Album 39",
-                status: "skipped",
-                reason,
-            },
-        ]);
-        expect(stderr.text).toBe(
-            "[Album 39] Downloading photo-39.jpg for thumbnail generation...\n" +
-                `[Album 39] Skipping photo-39.jpg: ${reason}\n`,
-        );
-        expect(requests).toEqual([
-            "/collections/v2?sinceTime=1",
-            "/?fileID=3900",
-        ]);
-
-        requests.length = 0;
-        stdout.text = "";
-        const notFound = { file: ["999"], json: true };
-        expect(await fixMissingThumbnailsCommand(ctx, notFound)).toBe(1);
-        expect(JSON.parse(stdout.text)).toMatchObject([
-            { fileID: 999, reason: "file not found in any collection" },
-        ]);
-        expect(requests).toEqual(["/collections/v2?sinceTime=1"]);
-    });
-
     it("files counts on stderr each album whose files its refresh fetched", async () => {
         expect(await filesCommand(accountContext(), undefined, {})).toBe(0);
 

test/cli/log.test.ts

@@ -234,9 +234,9 @@ describe("-q", () => {
         });
     });
 
-    // No album holds file 999, so fixing it fails. The summary from
-    // `--- Done ---` to the end of the `Failed files:` list is left out. The
-    // line saying why the command failed is the fatal one, and it is printed.
+    // No album holds file 999, so fixing it fails. The refresh's progress and
+    // the list of failed files are left out. The line saying why the command
+    // failed is the fatal one, and it is printed.
     it("prints only the line a failing command exits with", async () => {
         const fix = ["helper", "fix-missing-thumbnails", "--file", "999"];
         expect(await quak("-q", ...fix)).toEqual({
@@ -328,7 +328,7 @@ describe("what the library reports", () => {
         ]);
     });
 
-    // Each operation is named in plain words.
+    // Each operation is named in plain words, as the README names it.
     it("logs a refresh's progress at info, and its start and end at debug", () => {
         const { log, lines } = collect();
         const onProgress = logRefresh(log);

test/cli/read.test.ts

@@ -13,9 +13,6 @@
  * #217). Neither may wait for a refresh, which would fetch the files of every
  * collection. On an empty cache, `get` and `get-thumb` ask for that list, then
  * for one collection's files at a time, until they find the file (issue #222).
- * `helper fix-missing-thumbnails --file` does the same until it finds every
- * file it names, reading the most recently updated collection first (issue
- * #223).
  *
  * `collections` and `files` also list in the order the library gives them, not
  * the albums/photos projection's newest-first order. The fixtures are seeded in
@@ -30,7 +27,6 @@ import {
     freshCollections,
     freshFiles,
     freshFile,
-    freshFilesByID,
     type FreshReadLibrary,
 } from "../../src/cli-read.js";
 import { fileListRow } from "../../src/cli-output.js";
@@ -257,70 +253,4 @@ describe("CLI read helpers (issue #36 amendment, issue #52)", () => {
         expect(lib.freshFilesCalls).toEqual([1, 2, 3]);
         expect(found).toBeUndefined();
     });
-
-    // The server lists collections 1, 2 and 3, and collection 3 was updated
-    // most recently. File 11 is in collections 1 and 2.
-    const fileInTwoCollections = (): FakeLibrary =>
-        new FakeLibrary(
-            [collection(1, 100), collection(2, 200), collection(3, 300)],
-            [
-                file(10, 1, 1_700_000_000_000_000),
-                file(11, 1, 1_700_000_000_000_001),
-                file(11, 2, 1_700_000_000_000_001),
-                file(20, 2, 1_700_000_000_000_002),
-                file(30, 3, 1_700_000_000_000_003),
-            ],
-        );
-
-    it("freshFilesByID on an empty cache reads the most recently updated collection's files first, until it has found every file", async () => {
-        const lib = fileInTwoCollections();
-
-        const found = await freshFilesByID(lib, [11, 20]);
-        expect(lib.freshCalls).toBe(0);
-        expect(lib.freshCollectionsCalls).toBe(1);
-        expect(lib.freshFilesCalls).toEqual([3, 2]);
-        expect(found.get(11)?.collection.id).toBe(2);
-        expect(found.get(11)?.file.collectionID).toBe(2);
-        expect(found.get(20)?.collection.id).toBe(2);
-    });
-
-    // Collection 1 was updated last, though collections 2 and 3 have higher
-    // IDs. File 11 is in collections 1 and 2.
-    it("freshFilesByID on an empty cache reads the most recently updated collection first, though its ID is the lowest", async () => {
-        const lib = new FakeLibrary(
-            [collection(1, 400), collection(2, 200), collection(3, 300)],
-            [
-                file(11, 1, 1_700_000_000_000_001),
-                file(11, 2, 1_700_000_000_000_001),
-            ],
-        );
-
-        const found = await freshFilesByID(lib, [11]);
-        expect(lib.freshFilesCalls).toEqual([1]);
-        expect(found.get(11)?.collection.id).toBe(1);
-        expect(found.get(11)?.file.collectionID).toBe(1);
-    });
-
-    // The stand-in's cache holds what the server holds once `fresh()` has run.
-    it("freshFilesByID on a cache that holds the collections refreshes, then finds each file in the most recently updated collection that holds it", async () => {
-        const lib = fileInTwoCollections();
-        await lib.fresh();
-
-        const found = await freshFilesByID(lib, [11, 404]);
-        expect(lib.freshCalls).toBe(2);
-        expect(lib.freshCollectionsCalls).toBe(0);
-        expect(lib.freshFilesCalls).toEqual([]);
-        expect(found.get(11)?.collection.id).toBe(2);
-        expect(found.get(11)?.file.collectionID).toBe(2);
-        expect(found.has(404)).toBe(false);
-    });
-
-    it("freshFilesByID on an empty cache reads every collection's files when a file is in none of them", async () => {
-        const lib = fileInTwoCollections();
-
-        const found = await freshFilesByID(lib, [10, 404]);
-        expect(lib.freshFilesCalls).toEqual([3, 2, 1]);
-        expect(found.get(10)?.collection.id).toBe(1);
-        expect(found.has(404)).toBe(false);
-    });
 });

test/thumbnails/thumbnails.test.ts

@@ -6,12 +6,10 @@
  * working thumbnails, others return 404 or empty bodies. The tests
  * verify that the detection and repair logic handles each case correctly.
  *
- * `listMissingThumbnails` takes an open `Library` to enumerate the files. Both
- * helpers take the `Client` for the API operations: the thumbnail existence
- * check, and the encrypt-and-upload path. `fixMissingThumbnails` takes the
- * record of each file, which these tests look up with `cachedFilesByID`. It
- * reads each original through the library's content cache, by
- * `lib.originalOf(file)`.
+ * As of issue #52 both helpers take an open `Library` for enumeration and the
+ * `Client` for the API operations that stay unchanged (the thumbnail existence
+ * check, and the encrypt-and-upload path). `fixMissingThumbnails` reads each
+ * original through the library's content cache (`photo.original()`).
  *
  * `fixMissingThumbnails` is the most complex function in quak: it
  * downloads the original file, generates a JPEG thumbnail with jpeg-js,
@@ -43,7 +41,6 @@ import {
 import { SRP, SrpServer } from "fast-srp-hap";
 import { Client } from "../../src/client.js";
 import { Library } from "../../src/library/index.js";
-import { cachedFilesByID } from "../../src/cli-read.js";
 import {
     listMissingThumbnails,
     fixMissingThumbnails,
@@ -659,12 +656,7 @@ describe("fixMissingThumbnails", () => {
         const client = await login(buildThumbFetch(fixMock));
         const lib = await openLib(client);
 
-        const results = await fixMissingThumbnails(
-            lib,
-            client,
-            [101],
-            cachedFilesByID(lib, [101]),
-        );
+        const results = await fixMissingThumbnails(lib, client, [101]);
         lib.close();
 
         expect(results.length).toBe(1);
@@ -701,12 +693,7 @@ describe("fixMissingThumbnails", () => {
         const client = await login(buildThumbFetch(fixMock));
         const lib = await openLib(client);
 
-        const results = await fixMissingThumbnails(
-            lib,
-            client,
-            [999],
-            cachedFilesByID(lib, [999]),
-        );
+        const results = await fixMissingThumbnails(lib, client, [999]);
         lib.close();
 
         expect(results.length).toBe(1);
@@ -728,7 +715,6 @@ describe("fixMissingThumbnails", () => {
             lib,
             client,
             [101, 102],
-            cachedFilesByID(lib, [101, 102]),
             (msg, level) => {
                 if (level === "error") errors.push(msg);
             },
@@ -759,7 +745,6 @@ describe("fixMissingThumbnails", () => {
             lib,
             client,
             [101, 103, 104],
-            cachedFilesByID(lib, [101, 103, 104]),
         );
         lib.close();
 
@@ -794,12 +779,7 @@ describe("fixMissingThumbnails", () => {
         const client = await login(counted.fetch);
         const lib = await openLib(client);
 
-        const results = await fixMissingThumbnails(
-            lib,
-            client,
-            [101],
-            cachedFilesByID(lib, [101]),
-        );
+        const results = await fixMissingThumbnails(lib, client, [101]);
         lib.close();
 
         expect(results[0]!.status).toBe("skipped");
@@ -820,12 +800,7 @@ describe("fixMissingThumbnails", () => {
         const client = await login(counted.fetch);
         const lib = await openLib(client);
 
-        const results = await fixMissingThumbnails(
-            lib,
-            client,
-            [101],
-            cachedFilesByID(lib, [101]),
-        );
+        const results = await fixMissingThumbnails(lib, client, [101]);
         lib.close();
 
         expect(results[0]!.status).toBe("skipped");
@@ -866,12 +841,7 @@ describe("fixMissingThumbnails", () => {
         const client = await login(buildThumbFetch(fixMock));
         const lib = await openLib(client);
 
-        const results = await fixMissingThumbnails(
-            lib,
-            client,
-            [101],
-            cachedFilesByID(lib, [101]),
-        );
+        const results = await fixMissingThumbnails(lib, client, [101]);
         lib.close();
 
         expect(results[0]!.status).toBe("fixed");