# Capability Spec Delta: timing (spec-conformance)

**Package**: `@suaveplan/timing`
**Status**: PROPOSED

This delta annotates each existing requirement in `openspec/specs/timing/spec.md` with a `**Verified by:**` line, and records the inline drift fixes that wire scheduler queue-depth, stopwatch elapsed, and timer tick OTel emission so TM-11's "MUST emit" clause is satisfied at the module flow level (not just via standalone helpers). No requirement semantics change.

## MODIFIED Requirements

(See `openspec/specs/timing/spec.md` for the full requirement bodies; this delta only records the verification mapping.)

| Requirement | Verified by |
|---|---|
| TM-01 — Injectable clock | `src/stopwatch/stopwatch.test.ts` AND `src/throttle/throttle.test.ts` AND `src/timer/timer.test.ts` AND `src/timing.spec-conformance.test.ts` AND `tests/no-disallowed.test.ts` |
| TM-02 — AbortSignal support | `src/scheduler/scheduler.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-03 — Stopwatch | `src/stopwatch/stopwatch.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-04 — Throttle / debounce | `src/throttle/throttle.test.ts` AND `src/throttle/debounce.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-05 — Decay | `src/decay/decay.test.ts` |
| TM-06 — Scheduler | `src/scheduler/scheduler.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-07 — Timer and countdown | `src/timer/timer.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-08 — Vector clock | `src/vector-clock/vector-clock.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-09 — Structured errors | `src/errors/timing-error.test.ts` |
| TM-10 — Zod schemas | `src/*/*.schemas.ts` AND `tests/dep-graph.test.ts` |
| TM-11 — OTel instrumentation | `src/otel/timing-otel.test.ts` AND `src/timing.spec-conformance.test.ts` |
| TM-12 — sideEffects: false + coverage 100% | `tests/tree-shake.test.ts` AND `tests/no-disallowed.test.ts` AND coverage gate |

## Newly added tests in this change

- `src/timing.spec-conformance.test.ts` — pins throttle window-count edge, debounce flush/cancel/maxWait, vector-clock relation matrix and JSON round-trip, scheduler drain order + pre-abort, countdown pause/resume invariant with injected clock, stopwatch monotonicity across laps, and OTel no-op smoke for the new `recordSchedulerQueueDepth` gauge.

## Inline drift fixes folded into this change

- TM-11: stopwatch `.stop()`, scheduler enqueue/dequeue/dispose, and timer ticks now emit via `@opentelemetry/api`. New `recordSchedulerQueueDepth` helper added (lazy `ObservableGauge`, mutable observed value, no-op without exporter).