linetest: a test on request for a box that seeds all day (R-1250)

GET /host/line-test reports waiting_for_quiet (due, in the window, tunnel up, only the quiet
missing); POST /host/line-test/run runs one measurement with a 5 s settle and a 10 s quiet
check instead of 10 quiet minutes, runs 5 s apart (~55 s). Every other weekly rule holds.
Commit only; the release rides the next train.

CHANGELOG.md

@@ -1,3 +1,23 @@
+## Unreleased (next: v0.165.0) — the line test for a box that seeds all day (R-1250) (2026-10-24) — committed, not released
+
+Attended brief 2026-10-24, Part 4 (commit only; the release rides the next normal train). The weekly test (v0.164.0)
+starts only after 10 quiet minutes; a torrent app that seeds all day never gives them, so that box never got a tested
+line and qBittorrent never got its 50 % limit. Now:
+
+- **`linetest.Tester.WaitingForQuiet`** — due, inside the window, tries left, tunnel up, and only the quiet missing.
+  `GET /host/line-test` carries it as `waiting_for_quiet`; a controller with a seeding torrent app acts only on it.
+- **`linetest.Tester.RunNow`** and **`POST /host/line-test/run`** (synchronous, about 55 s) — a test on request while the
+  controller holds its app's upload low: every weekly rule holds (due, window, `MaxTriesPerDay`, tunnel, the one heavy-op
+  gate) except the 10 quiet minutes, which become a 5 s settle and a 10 s quiet check (below 2 Mbit/s, so a request
+  never measures the family's own upload); the three runs are 5 s apart instead of 30. A refusal answers its code
+  (`not-due`, `outside-window`, `tries-used`, `no-tunnel`, `heavy-op`, `not-quiet`, `server-busy`); a failed request
+  spends one of the day's tries. `Tick` and `RunNow` now share one `ready()` check.
+- Tests (each seen failing): `TestSeedingBoxIsWaitingForQuietAndRunNowMeasuresIt` (the sleeps, the 60 s bound),
+  `TestRunNowRefusesAnUplinkThatIsStillBusy`, `TestRunNowKeepsTheWeeklyRules`, `TestRunNowFailuresSpendTheDaysTries`,
+  `TestQuietBoxIsNotWaiting`, `TestLineTestRunRoute`; a compile-time assertion that the Tester serves the request half.
+
+**No sudoers or config-bundle change. MinController: none** — an older controller never calls the route.
+
 ## v0.164.0 — the weekly upload line test (R-1247) (2026-10-24) — RELEASED on the operator's ruling (attended release run); vouched by the operator 09:44:58 CEST
 
 Binary sha256 `1b803d8b70f8afbe1546f6989f35b6b0e29c9ed63f6acb3843d3c04ef0d24b2b`; config bundle sha256