Each app's prints are capped per day and logged on the device page #10690

Each app's prints on a device are now capped per day, and every job is logged and listed on the device page. bun x tsc --noEmit, bun scripts/gate.ts, bun scripts/design-lint.ts and test/print.test.ts with test/schema-migrations.test.ts all pass here. I didn't run the whole suite; the forge's check does that on push.

What changed

• Cap: each (device, app) grant has a daily limit, 10 by default. Once an app has used its prints for the day on that device, the next request gets a 429 with daily_cap and the plain reason "This app has used its prints for today on this printer; it can print again tomorrow." The day is the UTC day, and the count starts again at midnight.
• Check order: the cap is checked in permitPrint before the body is read. Jobs still in flight count toward it, so two at once can't slip past the last place.
• Log: one row per job in the new print_job table, with app, page count, time and outcome. The outcomes are printed, failed at the printer, refused by the cap, and refused for the document. Only printed and failed jobs count toward the cap, so a refusal never uses up the day.
• Device page: /settings/devices shows "N printed today" and a "Set limit" form beside each allowed app, and a "Recent prints" list per device (the last 10, newest first). The limit form is POST /settings/devices/cap, admin-only and same-origin like the other device forms. It accepts a whole number from 0 to 1000 and appends a device.cap_set event.
• Migration: 20261110130000-print-log adds the daily_cap column and the print_job table, with its pin. Code is in src/core/print_log.ts, src/devices/print.ts, src/actions/devices.ts and src/web/settings/devices.ts.
• Tests: two new tests in test/print.test.ts. One covers refusal past the limit, the reset on the next day and one log row per job. The other covers setting the limit on the page and the list of recent jobs.

What I left out

• The cap is per device and per app, not one total across all devices for an app.
• There is no pagination of the log beyond the last 10.
• Old log rows aren't pruned.
• The reset is tested by counting for tomorrow's date, not by moving the clock.

Try it: grant an app a device, set its limit to 2 on /settings/devices, and POST three PDFs to /api/v1/devices/:id/print. The third gets a 429, and "Recent prints" lists all three.

The pre-push hook wanted a "Try:" commit message, so I added an empty commit carrying it.

Closes #10569

Each app's prints on a device are now capped per day, and every job is logged and listed on the device page. bun x tsc --noEmit, bun scripts/gate.ts, bun scripts/design-lint.ts and test/print.test.ts with test/schema-migrations.test.ts all pass here. I didn't run the whole suite; the forge's check does that on push.

What changed

• Cap: each (device, app) grant has a daily limit, 10 by default. Once an app has used its prints for the day on that device, the next request gets a 429 with daily_cap and the plain reason "This app has used its prints for today on this printer; it can print again tomorrow." The day is the UTC day, and the count starts again at midnight.
• Check order: the cap is checked in permitPrint before the body is read. Jobs still in flight count toward it, so two at once can't slip past the last place.
• Log: one row per job in the new print_job table, with app, page count, time and outcome. The outcomes are printed, failed at the printer, refused by the cap, and refused for the document. Only printed and failed jobs count toward the cap, so a refusal never uses up the day.
• Device page: /settings/devices shows "N printed today" and a "Set limit" form beside each allowed app, and a "Recent prints" list per device (the last 10, newest first). The limit form is POST /settings/devices/cap, admin-only and same-origin like the other device forms. It accepts a whole number from 0 to 1000 and appends a device.cap_set event.
• Migration: 20261110130000-print-log adds the daily_cap column and the print_job table, with its pin. Code is in src/core/print_log.ts, src/devices/print.ts, src/actions/devices.ts and src/web/settings/devices.ts.
• Tests: two new tests in test/print.test.ts. One covers refusal past the limit, the reset on the next day and one log row per job. The other covers setting the limit on the page and the list of recent jobs.

What I left out

• The cap is per device and per app, not one total across all devices for an app.
• There is no pagination of the log beyond the last 10.
• Old log rows aren't pruned.
• The reset is tested by counting for tomorrow's date, not by moving the clock.

Try it: grant an app a device, set its limit to 2 on /settings/devices, and POST three PDFs to /api/v1/devices/:id/print. The third gets a 429, and "Recent prints" lists all three.

The pre-push hook wanted a "Try:" commit message, so I added an empty commit carrying it.

This update addresses all six points from @sentinel's review. tsc, scripts/gate.ts, scripts/design-lint.ts and test/print.test.ts, test/devices.test.ts and test/tui-devices.test.ts pass. I did not run the full suite; the forge runs it on push.

What changed

• Log growth (1):

- A cap refusal is written once per app, device and day. - Refusals are pruned to the last 100 per device. - Rows that count toward the cap (printed or failed) are dropped after 30 days. Pruning only ever removes refusals or rows old enough that they can't count. - The rate limiter and in-flight check now run before the cap check, so the cap path is no longer the first thing a hammering caller reaches.

• Race (2):

- permitPrint now reserves the slot synchronously, so parallel requests are counted before any body is read. - releasePermit gives the slot back. printFor releases in finally, and the route releases on a too-large body or a read error. - A concurrent test fires three parallel requests at a cap of 1 and expects exactly one 200.

• Terminal (3): In the Devices screen, l takes "slug number" and sets the limit through the same setCap action as the page, so it is admin-only and emits device.cap_set. Each row lists the apps as "slug today/cap" and the last 5 prints. The existing device.* events are what reach web viewers; I did not add anything live-specific beyond them.
• Docs (4): docs/features/devices.md has a new "Daily limit and the print log" section.
• Design (5):

- The page uses one dl row each for "Allowed apps", "Daily limit" and "Recent prints", with no form or log inside a list row. The per-app "n of cap printed today" text stays in the app row's meta, and the limit form is its own row. - A single query (grantLimits) returns each granted app's cap and today's count, so the app id is no longer looked up per call. OUTCOME_WORDS moved to print_log.ts and is shared by the page and the terminal. - The duplicate device_grants import is merged.

• Tests (6):

- The next-day reset now goes through the print path, using setSystemTime. - The 11th default job is refused. - Hammering past the cap leaves one refusal row. - Refusals are pruned to 100. - A non-admin gets forbidden from the action and a 404 from the page, with the cap unchanged. - Setting a cap appends device.cap_set. - The terminal sets a limit and rejects a bad number.

Left out

• The rate limiter's per-app buckets are not persisted, so a restart resets them.
• Pruning is by row count and age, not by a log size in bytes.
• The terminal's list does not refresh by itself when an app prints. It reloads when you change something there.

Try it: open /settings/devices as the owner and set an app's daily limit. In the terminal, open Devices and press l.

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