iridium-db 0.4.0

A high-performance vector-graph hybrid storage and indexing engine
# Performance Ship Checklist

Use this checklist before cutting a performance-focused release candidate.

## 1. Build and Tests

- [ ] `cargo test --workspace` passes.
- [ ] `cargo build --bin ir` passes.

## 2. Performance Evidence Regeneration

- [ ] `bash scripts/mixed_workload_matrix.sh`
- [ ] `bash scripts/soak_failure_check.sh`
- [ ] `bash scripts/concurrent_stress.sh`
- [ ] `bash scripts/tuning_sweep.sh`
- [ ] `bash scripts/release_gate.sh`

## 3. Required Artifact Presence

- [ ] `artifacts/mixed_workload_report.json`
- [ ] `artifacts/soak_failure_report.json`
- [ ] `artifacts/concurrent_stress_report.json`
- [ ] `artifacts/tuning_sweep_report.json`
- [ ] `artifacts/release_gate_report.json`

## 4. Gate Decisions

- [ ] `alpha_ready == true` in `artifacts/release_gate_report.json`
- [ ] `beta_ready == true` in `artifacts/release_gate_report.json`
- [ ] `overall_pass == true` in `artifacts/release_gate_report.json`

## 5. Runtime Baseline Confirmation

- [ ] Sweep recommendation reviewed from `artifacts/tuning_sweep_report.json`.
- [ ] Baseline query settings confirmed:
  - `IR_QUERY_MORSEL_SIZE=256`
  - `IR_QUERY_PARALLEL_WORKERS=0`
  - `IR_QUERY_SCAN_LIMIT_MULTIPLIER=64`
  - `IR_QUERY_SCAN_MIN=512`

## 6. Documentation Completeness

- [ ] `docs/performance/performance_runbook.md` reviewed/updated.
- [ ] `docs/performance/closeout.md` reviewed/updated.
- [ ] `README.md` performance section reviewed.

## 7. Final Release Note Inputs

- [ ] Include release-gate summary (alpha/beta/overall decision).
- [ ] Include current recommended runtime baseline from sweep.
- [ ] Include any known residual risks from `docs/performance/closeout.md`.
- [ ] Fill and publish `docs/performance/release_notes_template.md`.
- [ ] Publish final notes in `docs/performance/release_notes.md`.