Rename quack to quak

German for 'quack', matching the Ente (German for 'duck') naming. All
references updated: package name, CLI binary, X-Client-Package header,
test descriptions, temp dir prefixes, README, Makefile docker tag.

src/api/client.ts

@@ -1,7 +1,7 @@
 const DEFAULT_API_ORIGIN = "https://api.ente.io";
 const DEFAULT_FILES_ORIGIN = "https://files.ente.io";
 const DEFAULT_THUMBS_ORIGIN = "https://thumbnails.ente.io";
-const CLIENT_PACKAGE = "berlin.sneak.quack";
+const CLIENT_PACKAGE = "berlin.sneak.quak";
 
 export interface ApiClientOptions {
     apiOrigin?: string;

src/auth/types.ts

@@ -3,7 +3,7 @@
 export type Base64 = string;
 
 // The blob the server returns alongside the auth token after a successful
-// login. Together with the user's password, this is everything quack needs
+// login. Together with the user's password, this is everything quak needs
 // to derive the master key, secret key, and auth token.
 export interface KeyAttributes {
     kekSalt: Base64;

src/client.ts

@@ -86,7 +86,7 @@ export class Client {
             const code = await opts.emailOTP();
             response = await submitEmailOTP(api, opts.email, code);
         } else if (challenge.kind === "passkey") {
-            throw new Error("Passkey authentication is not supported by quack");
+            throw new Error("Passkey authentication is not supported by quak");
         } else {
             throw new Error(`Unknown login challenge kind`);
         }

src/crypto/kdf.ts

@@ -1,7 +1,7 @@
 import sodium from "libsodium-wrappers-sumo";
 
 // Argon2id over (password, salt, opsLimit, memLimit) producing a 32-byte
-// Key Encryption Key. Parameters come from the server; quack passes them
+// Key Encryption Key. Parameters come from the server; quak passes them
 // straight through. memLimit is in bytes, opsLimit is the iteration count.
 export const deriveKEK = async (
     password: string,