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I0842 — Before and after evidence for every optimisation

Record, for each hot spot removed, the phase time before and after and the counter before and after, in the benchmark history and in the commit message, and summarise them in docs/PERFORMANCE.md by pointing at the baseline file.

BLOCKED wave 3 · p0 · implementation profile · runs alone

Part of M004 — Performance is executable evidence, and the hot path does no canonical work twice.

Blocked. This issue cannot start until I0820, I0832 are done. The status is derived from that, not declared.

Objective

Record, for each hot spot removed, the phase time before and after and the counter before and after, in the benchmark history and in the commit message, and summarise them in docs/PERFORMANCE.md by pointing at the baseline file.

Why

A speed-up without numbers is a claim.

Current state

77f5d79 records the first ranking in its message.

Desired state

Every optimisation commit carries its measured delta; the baseline file carries the accepted state.

Scope

  • docs/PERFORMANCE.md
  • .ai/repo/benchmarks/baseline.json

Out of scope

  • Numbers in prose outside the baseline and the history

Dependencies

What waits on this

Acceptance criteria

  • Each optimisation commit names its phase and both values
  • The baseline reflects the state after the last optimisation

Validation

  • git log --grep perf

Evidence required

  • doctor_under_budget

Evidence

None recorded. Every token above needs a command or an artifact behind it before this issue can be completed; narrative is refused.

Risk

project.no-counts-in-prose keeps measured values out of the documents; the baseline file is the one place they live.

Timeline

started
—
verified
—
completed
—

Those three fields, the evidence above and the state of the dependencies are all the status is made of. There is no status field to disagree with them.

Canonical record: .ai/repo/project/issues/I0842.yaml. Read it back with majordomus plan show I0842.