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I2474

The drain draws its merge throughput: each day's merges over the fortnight its trail ends on

Where it stands

Readiness: complete completion is recorded and every required evidence token is present
Status: DONE
Can start: not now
Milestone: development-runtime
Milestone status: ACTIVE
Wave: 4
Waiting on: none
Holds back: none
Behind it in all: 0
Evidence: 2 of 2

Objective: Draw on the PR Drain how many pull requests the executor merged on each of the fourteen days that end on the day of its trail's newest event, as a chart whose counts are written in its label and in a table beside it.
Why: The owner asked on 2026-10-11 to implement every view of the UI screenshots (reference 03-pr-drain shows a merge throughput chart; pack v3 M04-03, measured time series). The executor's trail records every merge_succeeded with its time, and the queue already folds a seven-day merge count, but nothing showed the series.
Now: The drain shows merges in seven days and merges per day as two numbers.
Wanted: The drain panel, which asks integration.events, draws 'Merge throughput': the fourteen days ending on the trail's newest event's day (the record's end, not the reader's clock), each with its count of merge_succeeded events, as a server-side SVG chart labelled with every day's count and a table of the same numbers. An attempt is no merge, a merge outside the window is not drawn, and a trail with no merge in the window says so and draws no chart.
Done when: unknown: the record declares no `completion`
Risk: unknown: the record declares no `risk`

the chart covers fourteen days ending on the trail's newest event's day
each day counts merge_succeeded events only, and the counts are in the chart's label and a table
a trail with no merge in the window draws no chart and says so

Validation: cargo test --lib ui::prstest/run.sh 1079_the_drain_draws_its_throughput
Evidence required: ui_throughput_unit_testui_throughput_case_1079
Evidence present: ui_throughput_unit_testui_throughput_case_1079

Touches: apps/majordomus-cli/src/ui/prs.rs.ai/repo/project/issues/I2474.yamldocs/MAJORDOMUS_UI.mdtest/cases/1079_the_drain_draws_its_throughput.sh
Not: unknown: the record declares no `non_scope`
Depends on: I2473
Priority: p1
Profile: implementation
Parallel safe: false
Owner: unknown: the record declares no `owner`

Adapter: scripts/github-sync
Repository: unknown: the derived plan's header carries no repository
External issue: unknown: a live GitHub state; this executable makes no network call, so only `scripts/github-sync --check` can answer it
State there: unknown: a live GitHub state; this executable makes no network call, so only `scripts/github-sync --check` can answer it

Nothing is wrong with these records.