feat(cli): show per-file in-flight status in bucket migrate progress

[designcode]

Summary

• Replace the file/byte percentage bars in buckets migrate progress with a live, per-object in-flight list (name, size, time queued), sorted longest-queued first and capped to fit the terminal (+ N more overflow when the list is large).
• The gateway performs the migration server-side and exposes no per-object transfer progress, so a percentage computed against total bytes made a single large in-flight file look like a stalled/hung run. Showing each queued object's actual wait time instead reflects what the CLI genuinely knows, and makes it clear the run is working through named files rather than frozen.

Test plan

• pnpm --filter @tigrisdata/cli exec vitest run test/lib/buckets/migrate.test.ts — 20/20 passing (6 new tests for the display helpers, existing throttle/drain tests untouched)
• pnpm --filter @tigrisdata/cli test — full CLI suite passing
• pnpm --filter @tigrisdata/cli exec tsc --noEmit
• biome check (pre-commit hook)
• Manual verification against a real bucket with a large in-flight file (not yet run)

No changeset yet — holding off per request while this iterates.

---

Note

Low Risk
CLI-only progress UX and display helpers; migration scheduling/drain behavior is unchanged aside from more accurate scheduledAt stamping.

Overview
buckets migrate progress no longer shows file/byte percentage bars or a single “migrating …” line. The sticky TTY block now reports files done / failed, confirmed vs in-flight bytes, and a live in-flight list (key, size, queued duration).

In-flight rows are sorted longest-queued first (stable by name), capped by terminal height and MAX_INFLIGHT_ROWS, with + N more when the list is large so cursor-up redraw stays within the screen.

scheduledAt is recorded when each scheduleMigration call resolves (not once per batch), so per-object queued times stay accurate under concurrent scheduling. flushScheduleBatch is exported for tests.

Adds a changeset and vitest coverage for display helpers, overflow edge cases, and per-item timestamps.

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[greptile-apps]

Greptile Summary

The PR replaces percentage-based bucket-migration progress with a terminal-height-aware list of in-flight objects.

• Sorts displayed objects by queue age and collapses overflow into a summary row.
• Shows each visible object's key, size, and queued duration.
• Adds unit coverage for ordering, row selection, truncation, and formatting.

Confidence Score: 4/5

The inaccurate per-object queue timing and longest-queued ordering should be corrected before merging; display-width handling is also worth hardening.

Every successful object receives its timestamp only after the slowest scheduling request in its batch finishes, so the displayed durations and ordering do not reliably represent when individual objects entered the queue. Wide object names can also wrap despite length-based truncation and desynchronize sticky redraws.

Files Needing Attention: packages/cli/src/lib/buckets/migrate.ts

Important Files Changed

Filename	Overview
packages/cli/src/lib/buckets/migrate.ts	Adds the per-object progress renderer, but batch-level timestamps make queue durations inaccurate and string-length truncation can desynchronize redraws for wide object names.
packages/cli/test/lib/buckets/migrate.test.ts	Adds focused display-helper tests, but does not cover differing completion times within a concurrent scheduling batch or terminal-width behavior for wide Unicode names.

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[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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