-v raises the CLI's log level per repeat; -q prints only fatal errors (closes #212)

Every line quak prints on stderr now goes through one log, in
src/cli-log.ts, at one of six levels. The default, info, prints what quak
printed before. -v adds each retry and the start and end of each refresh
and ML data fetch; -vv adds each request with its result. -q prints only
the line a failing command exits with, and is refused with -v. Both are
program options. withRetry reports retries through a new onRetry, and
ApiClient reports requests through a new onRequest; the CLI logs what
they report. --json now changes stdout only, so backup and --json runs
log their progress on stderr.

Model: opus-5-5

test/cli/metadata-backup.test.ts

@@ -47,6 +47,7 @@ import {
     type MetadataBackupOptions,
 } from "../../src/metadata-backup.js";
 import { backupMetadataCommand } from "../../src/cli-commands.js";
+import { stderrLog } from "../../src/cli-log.js";
 import {
     buildAccount,
     buildMetaFetch,
@@ -506,7 +507,10 @@ describe("quak backup-metadata when a file's ML data cannot be read", () => {
         const code = await backupMetadataCommand(
             {
                 stdout: { write: () => true },
-                stderr: { write: (text: string) => (stderr += text) },
+                log: stderrLog(
+                    { write: (text: string) => (stderr += text) },
+                    "info",
+                ),
                 sessionDir: testDir,
                 cacheDir: mkdtempSync(join(testDir, "cache-")),
                 loadSession: () => client,