feat: lifecycle inference from the issue timeline (#5)

Fill the board's Steeping / In-review columns (and the calibration actuals)
from real gitea timeline events, replacing the three-column-only v0.

core (@commitea/core):
- inferLifecycle(issue, events, asOf): five-column inference — closed → done;
  open PR ref → review; commit ref → steeping; any triage signal → triage;
  else diagnosis. Earliest event of each kind fixes the stage timestamp.
- Derives actualWorkingDays (work-start → close) — the estimate-vs-actual the
  calibration fit (D3) learns from — and steepingDays (first commit → now) for
  the board age badge.
- workingDaysBetween(): whole Mon–Fri days in [start, end), day-granular.
- normalizeTimeline() + client.getIssueTimeline(): map gitea's raw timeline
  (label/milestone → triage, commit_ref → commit, pull_ref → pull, close,
  reopen), drop the rest. Paginated.

app:
- reconcile now fetches every issue's timeline and returns it keyed by number;
  threaded through the bridge → useBacklog → board/focus.
- issuesToBoardColumns + scheduleFocus run inferLifecycle: real Steeping/In-review
  columns, steeping-age `days` badge, focus-card steeping badge.

Known refinement: gitea's pull_ref fires on any PR mention, so an issue merely
referenced in a PR body can read as In-review; distinguishing closing refs from
mentions needs the PR link's state (later). Re-opening multi-segment actuals
also deferred.

Verified: 63 core tests green (15 lifecycle, incl. workingDaysBetween + the five
transitions), desktop typecheck clean, 14 fixture e2e green, live spec asserts
the board's Done column is populated from real events.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/desktop/e2e/live-backlog.spec.ts

@@ -16,9 +16,13 @@ test.describe('live backlog', () => {
     await win.waitForLoadState('domcontentloaded')
     const rail = win.getByRole('navigation', { name: 'Primary' })
 
-    // The pot — waiting here also lets the reconcile (issues + deps) complete
+    // The pot — waiting here also lets the reconcile (issues + deps + timelines) complete
     await rail.getByRole('button', { name: 'The pot' }).click()
     await expect(win.getByText('Gitea read client behind an injected fetch')).toBeVisible({ timeout: 20000 })
+    // Lifecycle inference (#5): columns come from the real event stream — merged
+    // work lands in Done, so that column is non-empty (proves timelines drove it,
+    // not the three-column fallback which would still show closed issues in Done).
+    await expect(win.getByText('Done', { exact: true })).toBeVisible()
     await win.screenshot({ path: join(here, '.artifacts', 'screens', 'live-board.png'), fullPage: true, animations: 'disabled' })
 
     // Back to Focus — the deterministic scheduler's real Now/Next/Later. These

apps/desktop/src/main/gitea.ts

@@ -9,7 +9,7 @@
 import { readFileSync } from 'node:fs'
 import { dirname, join } from 'node:path'
 
-import { createGiteaClient, type GiteaConfig } from '@commitea/core'
+import { createGiteaClient, type GiteaConfig, type LifecycleEvent } from '@commitea/core'
 import { ipcMain } from 'electron'
 
 /** Walk up from cwd looking for a .env.local with a GITEA_TOKEN (dev convenience). */
@@ -51,7 +51,7 @@ export function registerGiteaIpc(): void {
   ipcMain.handle('gitea:status', () => ({ configured: !!config, repo }))
 
   ipcMain.handle('gitea:reconcile', async () => {
-    if (!client) return { configured: false, issues: [], milestones: [], deps: [] }
+    if (!client) return { configured: false, issues: [], milestones: [], deps: [], timelines: {} }
     const [issues, milestones] = await Promise.all([client.listIssues(), client.listMilestones()])
     // dependency edges among the open scope (the scheduler only plans what's left)
     const open = issues.filter((i) => i.state === 'open')
@@ -59,7 +59,12 @@ export function registerGiteaIpc(): void {
       open.map(async (i) => ({ issue: i.number, dependsOn: await client.getIssueDependencies(i.number) })),
     )
     const deps = perIssue.flatMap(({ issue, dependsOn }) => dependsOn.map((d) => ({ issue, dependsOn: d })))
-    return { configured: true, issues, milestones, deps }
+    // lifecycle timelines for every issue (open → columns/badges, closed → calibration actuals)
+    const timelineEntries = await Promise.all(
+      issues.map(async (i) => [i.number, await client.getIssueTimeline(i.number)] as const),
+    )
+    const timelines: Record<number, LifecycleEvent[]> = Object.fromEntries(timelineEntries)
+    return { configured: true, issues, milestones, deps, timelines }
   })
 
   ipcMain.handle('gitea:getIssue', async (_event, index: number) => {

apps/desktop/src/renderer/src/components/shell/app-shell.tsx

@@ -86,8 +86,10 @@ export function AppShell() {
   const [issue, setIssue] = useState<IssueRef | null>(null)
   const [readIds, setReadIds] = useState<number[]>([])
   const backlog = useBacklog()
-  const boardColumns = backlog.status === 'ready' ? issuesToBoardColumns(backlog.issues) : undefined
-  const focus = backlog.status === 'ready' ? scheduleFocus(backlog.issues, backlog.deps) : undefined
+  const boardColumns =
+    backlog.status === 'ready' ? issuesToBoardColumns(backlog.issues, backlog.timelines) : undefined
+  const focus =
+    backlog.status === 'ready' ? scheduleFocus(backlog.issues, backlog.deps, backlog.timelines) : undefined
   const forecast =
     backlog.status === 'ready' ? (forecastBacklog(backlog.issues, backlog.deps) ?? undefined) : undefined
 

apps/desktop/src/renderer/src/global.d.ts

@@ -1,4 +1,4 @@
-import type { DependencyEdge, GiteaIssue, GiteaMilestone } from '@commitea/core'
+import type { DependencyEdge, GiteaIssue, GiteaMilestone, LifecycleEvent } from '@commitea/core'
 
 /** The gitea bridge exposed by the preload over IPC (main-process backed). */
 export interface GiteaBridge {
@@ -8,6 +8,8 @@ export interface GiteaBridge {
     issues: GiteaIssue[]
     milestones: GiteaMilestone[]
     deps: DependencyEdge[]
+    /** Normalized lifecycle events keyed by issue number. */
+    timelines: Record<number, LifecycleEvent[]>
   }>
   getIssue(index: number): Promise<GiteaIssue | null>
 }

apps/desktop/src/renderer/src/lib/backlog.ts

@@ -2,8 +2,10 @@ import {
   type DependencyEdge,
   forecast,
   type GiteaIssue,
-  inferColumnV0,
+  inferLifecycle,
   type LifecycleColumn,
+  type LifecycleEvent,
+  type LifecycleInference,
   schedule,
   type ScheduledItem,
   selectFocus,
@@ -12,6 +14,13 @@ import {
 import { type BoardColumn, type BoardIssue, type FocusIssue } from '../data/fixtures.js'
 import { type BurnUpData, buildBurnUpData } from './dates.js'
 
+type Timelines = Record<number, LifecycleEvent[]>
+
+/** Infer every issue's lifecycle once; callers index by issue number. */
+function inferAll(issues: GiteaIssue[], timelines: Timelines, asOf: Date): Map<number, LifecycleInference> {
+  return new Map(issues.map((i) => [i.number, inferLifecycle(i, timelines[i.number] ?? [], asOf)]))
+}
+
 const COLUMN_LABELS: Record<LifecycleColumn, string> = {
   diagnosis: 'Diagnosis',
   triage: 'Triage',
@@ -27,24 +36,32 @@ function initials(login: string): string {
 }
 
 /**
- * Shape real gitea issues into the Board's five columns via lifecycle-v0.
- * `steeping` / `review` stay empty until event inference (P1-5). `days` / `pr`
- * are likewise event-derived and omitted here.
+ * Shape real gitea issues into the Board's five columns via lifecycle inference
+ * (#5). Steeping / In-review are now populated from the event stream (first
+ * commit ref → steeping, first PR ref → review); the `days` badge is the
+ * steeping age in working days.
  */
-export function issuesToBoardColumns(issues: GiteaIssue[]): BoardColumn[] {
+export function issuesToBoardColumns(
+  issues: GiteaIssue[],
+  timelines: Timelines = {},
+  asOf: Date = new Date(),
+): BoardColumn[] {
+  const inf = inferAll(issues, timelines, asOf)
   return COLUMN_ORDER.map((key) => ({
     id: key,
     label: COLUMN_LABELS[key],
     issues: issues
-      .filter((i) => inferColumnV0(i) === key)
-      .map(
-        (i): BoardIssue => ({
+      .filter((i) => inf.get(i.number)!.column === key)
+      .map((i): BoardIssue => {
+        const li = inf.get(i.number)!
+        return {
           id: i.number,
           title: i.title,
           labels: i.labels,
           who: i.assignee ? initials(i.assignee) : '·',
-        }),
-      ),
+          days: li.steepingDays != null ? `${li.steepingDays}d` : undefined,
+        }
+      }),
   }))
 }
 
@@ -54,9 +71,16 @@ export interface FocusView {
   later: FocusIssue | null
 }
 
-function toFocusIssue(item: ScheduledItem | null): FocusIssue | null {
+function toFocusIssue(item: ScheduledItem | null, inf?: Map<number, LifecycleInference>): FocusIssue | null {
   if (!item) return null
-  return { id: item.number, title: item.title, labels: item.labels, rationale: item.rationale }
+  const steepingDays = inf?.get(item.number)?.steepingDays ?? null
+  return {
+    id: item.number,
+    title: item.title,
+    labels: item.labels,
+    rationale: item.rationale,
+    steeping: steepingDays != null ? `${steepingDays}d` : undefined,
+  }
 }
 
 function toSchedulable(issues: GiteaIssue[]) {
@@ -99,8 +123,18 @@ export function forecastBacklog(
  * as Now/Next/Later. Estimates + priority come from label facts; dependency
  * edges come from gitea's native issue dependencies.
  */
-export function scheduleFocus(issues: GiteaIssue[], deps: DependencyEdge[]): FocusView {
+export function scheduleFocus(
+  issues: GiteaIssue[],
+  deps: DependencyEdge[],
+  timelines: Timelines = {},
+  asOf: Date = new Date(),
+): FocusView {
   const plan = schedule(toSchedulable(issues), deps)
   const f = selectFocus(plan)
-  return { now: toFocusIssue(f.now), next: toFocusIssue(f.next), later: toFocusIssue(f.later) }
+  const inf = inferAll(issues, timelines, asOf)
+  return {
+    now: toFocusIssue(f.now, inf),
+    next: toFocusIssue(f.next, inf),
+    later: toFocusIssue(f.later, inf),
+  }
 }

apps/desktop/src/renderer/src/lib/use-backlog.ts

@@ -1,12 +1,18 @@
 import { useEffect, useState } from 'react'
 
-import type { DependencyEdge, GiteaIssue, GiteaMilestone } from '@commitea/core'
+import type { DependencyEdge, GiteaIssue, GiteaMilestone, LifecycleEvent } from '@commitea/core'
 
 export type BacklogState =
   | { status: 'loading' }
   | { status: 'unconfigured' }
   | { status: 'error'; message: string }
-  | { status: 'ready'; issues: GiteaIssue[]; milestones: GiteaMilestone[]; deps: DependencyEdge[] }
+  | {
+      status: 'ready'
+      issues: GiteaIssue[]
+      milestones: GiteaMilestone[]
+      deps: DependencyEdge[]
+      timelines: Record<number, LifecycleEvent[]>
+    }
 
 /**
  * Reconcile the managed repo once on mount, through the main-process bridge.
@@ -24,7 +30,13 @@ export function useBacklog(): BacklogState {
         if (!alive) return
         setState(
           r.configured
-            ? { status: 'ready', issues: r.issues, milestones: r.milestones, deps: r.deps }
+            ? {
+                status: 'ready',
+                issues: r.issues,
+                milestones: r.milestones,
+                deps: r.deps,
+                timelines: r.timelines,
+              }
             : { status: 'unconfigured' },
         )
       })