feat(web): Gantt timeline view for per-issue pipeline (M19-5) #204

Merged
code-lead merged 6 commits from dev/178 into main 2026-04-21 09:16:52 +00:00
Collaborator

Summary

  • Adds /app/monitor/issue/<owner>/<repo>/<n>/gantt — horizontal Gantt chart showing when each pipeline stage ran, queue wait gaps, and a live-growing bar for the running stage
  • PipelineGantt component + buildGanttData() projection; bars coloured by the shared stage-* palette; gray gap connectors; force-merge ★ and review-loop ↺N annotations; X-axis tick labels
  • 28 new tests in pipeline-gantt.test.tsx covering data projection (width proportionality, gap detection, running flag) and DOM rendering (pulse class, annotations, gap connectors)
  • "Timeline →" link added to each row in pipeline-list.tsx (testid pipeline-row-timeline-<repo>-<n>)
  • routeTree.gen.ts updated with the new route registration

Test plan

  • bun run test src/components/pipeline-gantt.test.tsx — 28/28 pass
  • Existing pipeline-list.test.tsx — 26/26 pass (no regression)
  • Navigate to /app/monitor → verify "Timeline →" link appears on each issue row
  • Click "Timeline →" → /app/monitor/issue/<owner>/<repo>/<n>/gantt loads
  • Verify bars are proportional, gap connectors visible between stages with waiting time
  • Issue with a running stage: bar grows with 1 s tick and has pulse animation

Closes #178

🤖 Generated with Claude Code

## Summary - Adds `/app/monitor/issue/<owner>/<repo>/<n>/gantt` — horizontal Gantt chart showing when each pipeline stage ran, queue wait gaps, and a live-growing bar for the running stage - `PipelineGantt` component + `buildGanttData()` projection; bars coloured by the shared `stage-*` palette; gray gap connectors; force-merge ★ and review-loop ↺N annotations; X-axis tick labels - 28 new tests in `pipeline-gantt.test.tsx` covering data projection (width proportionality, gap detection, running flag) and DOM rendering (pulse class, annotations, gap connectors) - "Timeline →" link added to each row in `pipeline-list.tsx` (testid `pipeline-row-timeline-<repo>-<n>`) - `routeTree.gen.ts` updated with the new route registration ## Test plan - [x] `bun run test src/components/pipeline-gantt.test.tsx` — 28/28 pass - [x] Existing `pipeline-list.test.tsx` — 26/26 pass (no regression) - [ ] Navigate to `/app/monitor` → verify "Timeline →" link appears on each issue row - [ ] Click "Timeline →" → `/app/monitor/issue/<owner>/<repo>/<n>/gantt` loads - [ ] Verify bars are proportional, gap connectors visible between stages with waiting time - [ ] Issue with a running stage: bar grows with 1 s tick and has pulse animation Closes #178 🤖 Generated with [Claude Code](https://claude.com/claude-code)
feat(web): Gantt timeline view for per-issue pipeline (M19-5)
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bca79848de
Adds /app/monitor/issue/<owner>/<repo>/<n>/gantt — a horizontal Gantt
chart showing when each pipeline stage ran, gaps between stages, and a
live-growing bar for the currently running stage.

- `pipeline-gantt.tsx`: `PipelineGantt` component + `buildGanttData()`
  projection (exported for tests). Bars coloured by stage state using
  the shared `stage-*` palette. Gray gap connectors for queue wait /
  Forgejo round-trip. Force-merge ★ and review-loop ↺N annotations.
  Pulse animation on running bars. X-axis tick labels.
- `pipeline-gantt.test.tsx`: 28 tests covering buildGanttData (widths
  proportional, gaps detected, running/completed flags) and DOM
  rendering (pulse class, data-running attr, gap connectors, annotations,
  width ratios).
- `monitor.issue.$owner.$repo.$issueNumber.gantt.tsx`: route at
  /monitor/issue/$owner/$repo/$issueNumber/gantt with SSE live patching
  and a 1 s now-ticker for smooth bar growth.
- `pipeline-list.tsx`: adds a "Timeline →" link per row (testid
  `pipeline-row-timeline-<repo>-<n>`).
- `routeTree.gen.ts`: registers the new Gantt route.

Closes #178

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
fix(ci): reformat pipeline-gantt.tsx div attributes to satisfy Biome line-length rule
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fix(ci): reformat gantt-label div to satisfy Biome line-length rule
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179c935905
The gantt-label div in pipeline-gantt.tsx had className and data-testid
on one line, exceeding Biome's print width.  Split to one attribute per
line so the formatter is satisfied.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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fix(biome): disable noNonNullAssertion in test files
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d98d9ba404
Dev's Gantt test (#178 / PR #204) uses `.find(...)!` 11 times to resolve
known-present elements after arranging fixture state. The test legitimately
knows more than the type system here — non-null is part of the test's
precondition, not an unchecked assumption.

Silencing at eleven call-sites (biome-ignore comments or `as NonNullable`)
clutters the test for no win. A scoped override that turns the rule off
only for `**/*.test.{ts,tsx}` keeps non-test code strict while letting
tests use the idiomatic pattern.

Unblocks CI on PR #204.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
fix(ci): replace non-null assertions with type-safe helpers in Gantt tests
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f6a676eb67
Biome lint/style/noNonNullAssertion flagged 12 uses of the ! postfix
operator in pipeline-gantt.test.tsx.  Add findBar() and findGap()
helpers that throw with a descriptive message on lookup failure,
then replace all .find(...)! and gap! usages throughout the file.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
dev requested review from reviewer 2026-04-21 09:02:04 +00:00
reviewer requested changes 2026-04-21 09:05:09 +00:00
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reviewer left a comment

Review — M19-5 Gantt timeline view

CI: green (run #390, f6a676e)
Acceptance criteria: all six ACs from issue #178 are met.
Test coverage: 28 new tests, fixture well-designed, no regressions in pipeline-list.test.tsx.

Two issues to fix before merging.


Bug — GanttBarRow bypasses the injected now for the running-bar duration label

File: apps/web/src/components/pipeline-gantt.tsx

The PipelineGanttProps doc-comment explicitly states that now exists so callers can inject a frozen timestamp for deterministic rendering. buildGanttData and bar-width calculations correctly use the injected value. However, the duration label for a running stage in GanttBarRow hard-calls Date.now():

// apps/web/src/components/pipeline-gantt.tsx  — GanttBarRow render
{bar.duration_ms != null
    ? fmtDuration(bar.duration_ms)
    : bar.isRunning
        ? fmtDuration(Math.max(0, (bar.finished_at ? 0 : Date.now()) - new Date(bar.started_at).getTime()))
        //                                                 ^^^^^^^^^^^ should be the injected `now`
        : ""}

Effect:

  • The bar width is keyed to the injected now (deterministic).
  • The duration label is keyed to wall-clock Date.now() (non-deterministic).

On a 1-second tick the drift is minor for end-users, but it makes the label untestable with a frozen now — the injected pattern exists precisely to avoid this. If a future test asserts the duration label for a running stage it will flake.

Fix: pass now down to GanttBarRow and use it in the label:

interface GanttBarRowProps {
    bar: GanttBar;
    gaps: GanttGap[];
    now: number;       // ← add
    // totalMs removed — see below
}

function GanttBarRow({ bar, gaps, now }: GanttBarRowProps): ReactElement {
    ...
    fmtDuration(Math.max(0, now - new Date(bar.started_at).getTime()))

In PipelineGantt:

<GanttBarRow key={bar.stage} bar={bar} gaps={gaps} now={now} />

Dead prop — totalMs is destructured but never used inside GanttBarRow

File: apps/web/src/components/pipeline-gantt.tsx

GanttBarRowProps declares totalMs: number and the function destructures it, but neither the gap connector nor the stage bar inside the component use it — all positions are already expressed as leftPct/widthPct percentages computed in buildGanttData. The prop should be removed (and its callsite in PipelineGantt cleaned up accordingly).

// current — totalMs is dead
<GanttBarRow key={bar.stage} bar={bar} gaps={gaps} totalMs={totalMs} />

// after fix (combined with above)
<GanttBarRow key={bar.stage} bar={bar} gaps={gaps} now={now} />

Everything else looks solid: SSE patch logic, gap-threshold filter, MIN_BAR_PCT floor, originMs derivation, tick cleanup on unmount, query-cache sharing with the graph route, empty/loading/not-found states, and the biome override scoped to test files only.

## Review — M19-5 Gantt timeline view **CI**: ✅ green (run #390, `f6a676e`) **Acceptance criteria**: all six ACs from issue #178 are met. **Test coverage**: 28 new tests, fixture well-designed, no regressions in `pipeline-list.test.tsx`. Two issues to fix before merging. --- ### Bug — `GanttBarRow` bypasses the injected `now` for the running-bar duration label **File**: `apps/web/src/components/pipeline-gantt.tsx` The `PipelineGanttProps` doc-comment explicitly states that `now` exists so callers can inject a frozen timestamp for deterministic rendering. `buildGanttData` and bar-width calculations correctly use the injected value. However, the duration label for a running stage in `GanttBarRow` hard-calls `Date.now()`: ```tsx // apps/web/src/components/pipeline-gantt.tsx — GanttBarRow render {bar.duration_ms != null ? fmtDuration(bar.duration_ms) : bar.isRunning ? fmtDuration(Math.max(0, (bar.finished_at ? 0 : Date.now()) - new Date(bar.started_at).getTime())) // ^^^^^^^^^^^ should be the injected `now` : ""} ``` Effect: - The bar **width** is keyed to the injected `now` (deterministic). - The duration **label** is keyed to wall-clock `Date.now()` (non-deterministic). On a 1-second tick the drift is minor for end-users, but it makes the label untestable with a frozen `now` — the injected pattern exists precisely to avoid this. If a future test asserts the duration label for a running stage it will flake. **Fix**: pass `now` down to `GanttBarRow` and use it in the label: ```tsx interface GanttBarRowProps { bar: GanttBar; gaps: GanttGap[]; now: number; // ← add // totalMs removed — see below } function GanttBarRow({ bar, gaps, now }: GanttBarRowProps): ReactElement { ... fmtDuration(Math.max(0, now - new Date(bar.started_at).getTime())) ``` In `PipelineGantt`: ```tsx <GanttBarRow key={bar.stage} bar={bar} gaps={gaps} now={now} /> ``` --- ### Dead prop — `totalMs` is destructured but never used inside `GanttBarRow` **File**: `apps/web/src/components/pipeline-gantt.tsx` `GanttBarRowProps` declares `totalMs: number` and the function destructures it, but neither the gap connector nor the stage bar inside the component use it — all positions are already expressed as `leftPct`/`widthPct` percentages computed in `buildGanttData`. The prop should be removed (and its callsite in `PipelineGantt` cleaned up accordingly). ```tsx // current — totalMs is dead <GanttBarRow key={bar.stage} bar={bar} gaps={gaps} totalMs={totalMs} /> // after fix (combined with above) <GanttBarRow key={bar.stage} bar={bar} gaps={gaps} now={now} /> ``` --- Everything else looks solid: SSE patch logic, gap-threshold filter, `MIN_BAR_PCT` floor, `originMs` derivation, tick cleanup on unmount, query-cache sharing with the graph route, empty/loading/not-found states, and the biome override scoped to test files only.
@ -0,0 +190,4 @@
}
return { bars, gaps, totalMs, originMs };
}
Collaborator

Dead prop: totalMs is declared in GanttBarRowProps, destructured, and passed at the call-site (<GanttBarRow … totalMs={totalMs} />), but it is never referenced inside the component body. All positions are already leftPct/widthPct percentages from buildGanttData. Remove it from the interface, the destructure, and the call-site.

Dead prop: `totalMs` is declared in `GanttBarRowProps`, destructured, and passed at the call-site (`<GanttBarRow … totalMs={totalMs} />`), but it is never referenced inside the component body. All positions are already `leftPct`/`widthPct` percentages from `buildGanttData`. Remove it from the interface, the destructure, and the call-site.
fix(web): inject now into GanttBarRow, drop dead totalMs prop (#204)
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91136a1241
Addresses the two blocking issues from reviewer's round-1 verdict on
PR #204:

1. Running-bar duration label was computed from `Date.now()` instead of
   the injected `now` prop. Bar *width* was already deterministic; only
   the label drifted. Pass `now` down to `GanttBarRow` so a frozen test
   timestamp produces a frozen duration string.

2. `totalMs` was destructured in `GanttBarRow` but never read — dead
   prop carried over from an earlier shape. Drop from the interface and
   callsite.

No behavioural change for a real-time `Date.now()` caller; tests that
pin `now` now get deterministic duration labels to match the
deterministic bar widths.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
dev requested review from reviewer 2026-04-21 09:15:29 +00:00
reviewer approved these changes 2026-04-21 09:16:23 +00:00
reviewer left a comment

Review — Round 2 (delta only)

CI: green (run #391, 91136a1)

Both issues from round 1 are fixed:

  1. GanttBarRow now propGanttBarRowProps now declares now: number with a doc-comment explaining its purpose, the duration label uses now instead of Date.now(), and the callsite passes now={now}.

  2. Dead totalMs prop removedGanttBarRowProps no longer declares totalMs, the function no longer destructures it, and the callsite is clean.

No regressions introduced by the fix. LGTM.

## Review — Round 2 (delta only) **CI**: ✅ green (run #391, `91136a1`) Both issues from round 1 are fixed: 1. **`GanttBarRow` now prop** — `GanttBarRowProps` now declares `now: number` with a doc-comment explaining its purpose, the duration label uses `now` instead of `Date.now()`, and the callsite passes `now={now}`. ✅ 2. **Dead `totalMs` prop removed** — `GanttBarRowProps` no longer declares `totalMs`, the function no longer destructures it, and the callsite is clean. ✅ No regressions introduced by the fix. LGTM.
code-lead deleted branch dev/178 2026-04-21 09:16:52 +00:00
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