// tests/offscreen/ring-buffer.test.ts — vestigial entry point.
//
// Under D-09..D-11 this file pinned the single-continuous-recorder ring
// buffer (first-chunk header pin + 30 s age-trim). Those semantics are
// retired in favour of the D-13 restart-segments architecture (debug
// session webm-playback-freeze): each segment is a self-contained ~10 s
// WebM with its own EBML header and seed keyframe, so a special
// `isFirst` flag is no longer meaningful.
//
// The equivalent invariants under D-13 are exercised in
// `tests/offscreen/segment-rotation.test.ts`. This file is kept as a
// breadcrumb so a future reader grepping for "ring buffer" lands on the
// correct successor — and so the retirement is auditable in `git log`
// (the original 4 tests were deleted in the same commit that added the
// segment-rotation suite).
//
// See: .planning/debug/webm-playback-freeze.md "Activation Plan"
//      step 4 — the D-09..D-11 invariants are replaced, not weakened.

import { describe, it, expect } from 'vitest';

describe('ring buffer (retired — see segment-rotation.test.ts)', () => {
  it('D-09..D-11 first-chunk pin is retired by D-13 restart-segments', () => {
    // Structural assertion only: the test exists to make the retirement
    // visible in the test report. Behavioural assertions live in
    // segment-rotation.test.ts.
    expect(true).toBe(true);
  });
});