[AZ-1123] Document docker-compose.perf.yml port playbook

Co-authored-by: Cursor <cursoragent@cursor.com>

_docs/03_implementation/batch_01_cycle11_report.md

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+# Batch Report
+
+**Batch**: 1
+**Tasks**: AZ-1123
+**Date**: 2026-06-25
+**Cycle**: 11
+
+## Task Results
+
+| Task | Status | Files Modified | Tests | AC Coverage | Issues |
+|------|--------|---------------|-------|-------------|--------|
+| AZ-1123 perf compose docs | Done | containerization.md, environment.md | N/A (docs only) | 3/3 | None |
+
+## Code Review Verdict: PASS (documentation-only)
+
+## Next Batch: All tasks complete

_docs/03_implementation/implementation_report_perf_compose_docs_cycle11.md

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+# Implementation Report — Perf Compose Documentation (Cycle 11)
+
+**Cycle**: 11
+**Tasks**: AZ-1123 (1 SP)
+**Feature slug**: perf_compose_docs
+
+## Summary
+
+Documented `docker-compose.perf.yml` host-port conflict playbook in deployment and test environment docs. No code or compose behavior changes.
+
+## Deliverables
+
+| Artifact | Change |
+|----------|--------|
+| `deployment/containerization.md` | Compose overlays table + perf overlay command |
+| `tests/environment.md` | Perf orchestration row + cross-link |
+
+## Verification
+
+Documentation-only — AC verified by review against `docker-compose.perf.yml` and `docker-compose.tests.yml` on disk.