- Fresh benchmark data on amd64 Intel Xeon (previous was arm64)
- Highlight new full_content benchmarks: 39% memory, 40% speed improvement
  from excluding full_content in list views (validates NK-k9otuy fix)
- Update frontend perf results (all pass, DOM insertion ~324ms)
- Note safehttp proxy fix in changes since last run

https://claude.ai/code/session_01DpWhB9uGGMBnzqS28HxnuV

Ran Go benchmarks (3x count) across api, crawler, item model, and web
middleware packages. Also ran frontend-vanilla perf tests. Documented
findings including stream allocation overhead, image proxy cost, and
middleware latency. Added potential improvement recommendations.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Comprehensive plan covering Go backend benchmarks (item/filter/API/middleware/crawler),
stress tests (concurrent reads/writes, large datasets), and frontend perf tests
(render throughput, store event cascades). Saved to both PLAN.md and DOCS/ for
reference by other agents.

https://claude.ai/code/session_01ChDVWFDrQoFjMYHpaLGr9s