-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 fatal lines, and is refused with -v; both are program options. Every non-zero exit logs one fatal line, so a run that exits 1 because files failed says how many and where to look. Every line reporting a failure is at error. --json changes stdout only, so backup and --json runs log their progress on stderr. withRetry and ApiClient report retries and requests through new callbacks.

Model: opus-5-5

src/retry.ts

@@ -24,6 +24,9 @@ export interface RetryOptions {
     sleep?: (ms: number) => Promise<void>;
     // Injected so the jitter is reproducible under test.
     random?: () => number;
+    // Called before each wait with the error that failed attempt number
+    // `attempt` and how long the wait is, for a caller that logs retries.
+    onRetry?: (err: unknown, attempt: number, delayMs: number) => void;
 }
 
 export type ResolvedRetryOptions = Required<RetryOptions>;
@@ -35,6 +38,7 @@ export const DEFAULT_RETRY_OPTIONS: ResolvedRetryOptions = {
     sleep: (ms: number): Promise<void> =>
         new Promise((resolve) => setTimeout(resolve, ms)),
     random: Math.random,
+    onRetry: () => {},
 };
 
 // For a run nobody is watching, such as `quak backup` from cron. A request that
@@ -55,6 +59,7 @@ export const resolveRetryOptions = (
     maxDelayMs: opts?.maxDelayMs ?? DEFAULT_RETRY_OPTIONS.maxDelayMs,
     sleep: opts?.sleep ?? DEFAULT_RETRY_OPTIONS.sleep,
     random: opts?.random ?? DEFAULT_RETRY_OPTIONS.random,
+    onRetry: opts?.onRetry ?? DEFAULT_RETRY_OPTIONS.onRetry,
 });
 
 // Transport failures: the request did not complete, for reasons below HTTP.
@@ -234,7 +239,9 @@ export const withRetry = async <T>(
                 // and its status intact.
                 throw err;
             }
-            await policy.sleep(backoffMs(attempt, policy));
+            const delayMs = backoffMs(attempt, policy);
+            policy.onRetry(err, attempt, delayMs);
+            await policy.sleep(delayMs);
         }
     }
 };