feat(seats): a pass's share of the windows by the run's effort, the weekly cutoff at 99 %

The 5-hour share of a running pass was a flat 0.25 points; it follows the
run's effort now, as the weekly share already did: 0.5 at max and any other
effort, 0.125 at xhigh - the pooled means of 5438 Opus 5.5 passes on 141
seat-runs (2026-10-12..15), rounded up. The weekly cutoff moves from 95 %
to 99 %: the weekly window is the budget the lenses run out of, and with
the running passes projected against the cutoff the last percent is spent
a pass at a time, not in a burst. REVIEW_GATES_LENS_COST_PCT and
REVIEW_GATES_LENS_COST_7D_PCT still override every effort.

AGENTS.md

@@ -108,7 +108,8 @@ Conventions:
   No file the drivers write holds these in practice, and a file that fails to parse is treated as a damaged one.
 - **HTTP.** `ClientHTTP1::Fetch` ignores `*_proxy` variables. The OpenRouter requests send `User-Agent: crafter-review`; `app_ready` sends `review-gates`. Reason phrases are the standard ones, not the server's.
 - **Seat placement** (SeatPool, Seats, Drivers):
-  - An account whose 5-hour limit Anthropic has removed reports the weekly window alone. Its burst window (`Seats::BurstWindow`) is the weekly one: it is ranked and admitted by the weekly window with the passes in flight projected on it (0.04 points per pass at xhigh, 0.125 otherwise), under the 95 % cutoff.
+  - An account whose 5-hour limit Anthropic has removed reports the weekly window alone. Its burst window (`Seats::BurstWindow`) is the weekly one: it is ranked and admitted by the weekly window with the passes in flight projected on it (0.04 points per pass at xhigh, 0.125 otherwise), under the 99 % cutoff.
+  - A pass's projected share of the windows follows the run's effort: 0.5 / 0.125 points of the 5-hour window and 0.125 / 0.04 of the weekly one at max / xhigh (`SeatPool::LensCostPct`, `LensCost7dPct`), the pooled means of 5438 passes on 141 seat-runs (2026-10-12..15) rounded up. The weekly cutoff is 99 %: the running passes are projected against it, so the last percent is spent a pass at a time.
   - Every OAuth account and the local login takes at most 128 passes at once, every driver's counted.
   - There is no machine-wide width (2026-10-31, Jorijn: "there is no need to do a global cap anymore, the cap should be 128 per available account"). `--concurrency` caps only when given, and the dump's `args.concurrency` is then null. The board's driver settings read `128 per account`, which every driver's `seats` shows as that driver's width (Scheduler, Runs).
   - A 'concurrents' rejection pauses the seat for 20 s or its retry-after, not until a window's reset.
@@ -179,7 +180,7 @@ What the binary reads at run time, and how. A variable the driver only sets or s
 | `SEATS_ENV_FILE` | `:Run` Gate0 (run), `seats` | run: `<repo>/.env` if it exists; `seats`: `./.env` if it exists | `--env-file` wins (in run even `--env-file ""`, meaning no file); empty counts as unset. Only seat lines are taken (`[export ]NAME=value`, one pair of matching quotes stripped), overriding the process environment; no knob below is ever read from the file. A file that cannot be read, or is not UTF-8: run stops at preflight (exit 3), `seats` exits 1 with the read error. | The dotenv file the seat secrets come from |
 | `REVIEW_GATES_SEATS` | `:Driver` RunCommand → LoadSeats | `auto` | Only without `--seats`. Stripped, case-sensitive; unset or empty is `auto` (every api and oauth seat, else `local`); `local`, `api`, `oauth`, `openrouter` select that kind; anything else is a comma list of ids (`apiN`, `N`, `orN`, `local`; blank items skipped). An id not configured, or OpenRouter mixed with others, is a preflight error (exit 3). | The seats a run places lens processes on |
 | `REVIEW_GATES_SEAT_MAX_UTIL` | `:Seats` ConfigFromEnv (`seats`; run through `:SeatPool` PoolConfig) | `85` | A finite number >= 0, in decimal or exponent notation; surrounding whitespace, `_` between digits and Unicode digits are taken. Empty, garbage, negative, `inf`, `nan` keep the default; a whole value is stored as an int. Process environment only. | Ceiling (%) of an OAuth seat's projected 5-hour utilisation |
-| `REVIEW_GATES_LENS_COST_PCT` | `:Seats` ConfigFromEnv; `:SeatPool` PoolConfig | run: `0.25`; `seats`: `10` | As MAX_UTIL. PoolConfig puts in 0.25 only when it is unset or blank, so a set but invalid value gives 10, in run too. | Percentage points of the 5-hour window a running process is projected to add (its cost on the board too) |
+| `REVIEW_GATES_LENS_COST_PCT` | `:Seats` ConfigFromEnv; `:SeatPool` PoolConfig | run: `0.5` at max and any other effort, `0.125` at xhigh; `seats`: `10` | As MAX_UTIL. PoolConfig puts in the effort's figure only when it is unset or blank, so a set but invalid value gives 10, in run too. | Percentage points of the 5-hour window a running process is projected to add (its cost on the board too) |
 | `REVIEW_GATES_SEAT_POLICY` | `:Seats` ConfigFromEnv | `spread` | Exactly `pack` (case-sensitive, untrimmed) is pack; anything else spread. | pack: the first eligible OAuth seat by id; spread: the lowest projected one |
 | `REVIEW_GATES_SEAT_WAIT_MIN` | `:Seats` ConfigFromEnv | `15` | As MAX_UTIL | Shown by `seats --json` as `waitMaxMin`; nothing else reads it |
 | `REVIEW_GATES_SEAT_HANDOVER_PCT` | `:Seats` ConfigFromEnv | `90` | As MAX_UTIL | Shown in the `seats` report and `--json` only |