test(stats): add page-miss benches for the dashboard and the query log

[henry40408]

Summary

The Statistics page has stats_page_miss_bench; the dashboard and the query log, the other two readers of query_logs, had nothing equivalent, so a change aimed at them had no before/after to show. This adds both, as #[ignore] benches in the same shape.

• dashboard_page_miss_bench reports the first response (dashboard_page) and the event-stream tick (compute_snapshot), which recurs every TICK_INTERVAL_SECS while a dashboard is open.
• logs_page_miss_bench reports the list (page 1 and page 20) and the count for every filter /logs offers, alone and combined, with the busiest and the quietest value of each drawn from BENCH_DB itself, plus the domain suggestions the page renders.
• BENCH_NOW (unix seconds) on all three benches pins the clock, so a copy older than its windows still measures the traffic it holds.

No behaviour change: only #[ignore] benches and the docs that list them (ARCHITECTURE.md, CLAUDE.md).

Baseline at 46e1410

BENCH_DB=<copy> BENCH_NOW=1789212354 cargo nextest run --release --no-capture -j 1 --run-ignored only page_miss_bench

Real database, 370 677 rows (8 days)

dashboard_page_miss_bench
  summary                                         2157        8.4
  top domains + clients                            748        2.9
  top upstreams                                    212        0.8
  FIRST RESPONSE TOTAL                            3117       12.2
  timeline (tick only)                             293        1.1
  TICK TOTAL (compute_snapshot)                   3408       13.3

logs_page_miss_bench (selected rows)
  no filter — count                               1387        5.4
  search contains — count                         3973       15.5
  blocked — count                                 2153        8.4
  token (busy) — count                            5770       22.5
  type (quiet) — list page 1                      2158        8.4
  search prefix + allowed — list page 1           6606       25.8
  token (busy) + blocked — count                 10785       42.1
  token + type (both quiet) — count              10785       42.1
  domain suggestions                              3973       15.5
  SUM OF ALL READINGS                           104829      409.5

stats_page_miss_bench (30d)
  PAGE TOTAL (whole visit)                        7937       31.0

Synthetic database, 1 482 708 rows (31 days, the real week replayed four times)

dashboard_page_miss_bench
  summary                                         9480       37.0
  FIRST RESPONSE TOTAL                           10444       40.8
  TICK TOTAL (compute_snapshot)                  10774       42.1

logs_page_miss_bench
  no filter — count                               6230       24.3
  token (busy) — count                           23130       90.4
  search prefix + allowed — list page 1          26855      104.9
  token (busy) + blocked — count                 42866      167.4
  SUM OF ALL READINGS                           380823     1487.6

stats_page_miss_bench (30d)
  PAGE TOTAL (whole visit)                       31883      124.5

Test plan

• cargo fmt --check
• cargo clippy --all-targets -- -D warnings
• cargo nextest run: 680 passed, 8 skipped
• All three benches run against both databases above

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.14%. Comparing base (46e1410) to head (c7cdb11).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #278   +/-   ##
=======================================
  Coverage   91.14%   91.14%           
=======================================
  Files          31       31           
  Lines       11401    11401           
=======================================
  Hits        10392    10392           
  Misses       1009     1009           

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