cc-haha/src/server/services/cronScheduler.ts
程序员阿江(Relakkes) be4984009c fix(desktop): hide Windows subprocess consoles (#802)
Ensure Electron sidecar launch and Windows taskkill calls hide console windows, and pass the same hidden-window spawn option through desktop CLI and scheduled-task subprocess launches.

Tested: cd desktop && bun test ./electron/services/sidecarManager.test.ts
Tested: bun test src/server/__tests__/conversation-service.test.ts src/server/__tests__/cron-scheduler-launcher.test.ts
Tested: bun run check:native
Tested: bun run check:server
Not-tested: Windows GUI quit smoke
Confidence: medium
Scope-risk: narrow
2026-06-12 10:16:58 +08:00

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/**
* CronScheduler — Execution engine for scheduled tasks
*
* Periodically checks all scheduled tasks and executes those whose cron
* expression matches the current time. Tasks are run by spawning a CLI
* subprocess with the task's prompt. Execution history is persisted to
* ~/.claude/scheduled_tasks_log.json.
*/
import * as fs from 'fs/promises'
import { existsSync, readFileSync, realpathSync, statSync } from 'node:fs'
import * as path from 'path'
import * as os from 'os'
import * as crypto from 'crypto'
import { CronService, type CronTask } from './cronService.js'
import { SessionService } from './sessionService.js'
import { sendTaskNotification } from './notificationService.js'
import { ProviderService } from './providerService.js'
import { isProviderManagedEnvVar } from '../../utils/managedEnvConstants.js'
import {
buildClaudeCliArgs,
resolveClaudeCliLauncher,
} from '../../utils/desktopBundledCli.js'
import { getProcessEnvWithTerminalShellEnvironment } from '../../utils/terminalShellEnvironment.js'
import { attributionHeaderEnvForModel } from './attributionHeaderPolicy.js'
// ─── Types ─────────────────────────────────────────────────────────────────────
export type TaskRun = {
id: string // random ID
taskId: string // references CronTask.id
taskName: string
startedAt: string // ISO timestamp
completedAt?: string
status: 'running' | 'completed' | 'failed' | 'timeout'
prompt: string
output?: string // captured stdout summary
error?: string
exitCode?: number
durationMs?: number
sessionId?: string // links to a session for rich output rendering
}
export function buildCronTaskSpawnOptions(
cwd: string,
env: NodeJS.ProcessEnv,
) {
return {
stdin: 'pipe',
stdout: 'pipe',
stderr: 'pipe',
cwd,
env,
windowsHide: true,
} as const
}
// ─── Output extraction ────────────────────────────────────────────────────────
/**
* Extract meaningful assistant text from raw CLI stream-json (NDJSON) output.
*
* The raw stdout contains system/init messages, tool_use blocks, tool_result
* echoes, and thinking blocks — all of which are noise to the end user. The
* actual AI answer (assistant text blocks + final result) is what matters.
*
* By extracting server-side we avoid the 10K naive truncation problem where
* the useful content sits well past the first 10K characters.
*/
function extractAssistantText(raw: string): string {
if (!raw) return ''
const lines = raw.split('\n')
const parts: string[] = []
for (const line of lines) {
if (!line.trim()) continue
let parsed: any
try {
parsed = JSON.parse(line)
} catch {
continue // skip non-JSON lines and truncated lines
}
const type = parsed?.type
if (type === 'assistant') {
const content = parsed?.message?.content
if (!Array.isArray(content)) continue
for (const block of content) {
if (block.type === 'text' && block.text?.trim()) {
parts.push(block.text.trim())
}
// Skip tool_use, thinking blocks
}
}
if (type === 'result') {
const result = parsed?.result
if (typeof result === 'string' && result.trim()) {
parts.push(result.trim())
} else if (result?.message?.trim()) {
parts.push(result.message.trim())
}
}
}
return parts.join('\n\n')
}
// ─── Cron expression matching ──────────────────────────────────────────────────
/**
* Check whether a single cron field matches a given numeric value.
*
* Supported syntax per field:
* * — any value
* 5 — exact match
* 1,3,5 — list
* 1-5 — inclusive range
* */2 — step from 0
* 1-10/3 — step within a range
*/
export function fieldMatches(field: string, value: number): boolean {
if (field === '*') return true
// Comma-separated list — each element can be a range or step
const parts = field.split(',')
return parts.some((part) => singleFieldMatches(part.trim(), value))
}
function singleFieldMatches(part: string, value: number): boolean {
// Step: */n or range/n
if (part.includes('/')) {
const [rangePart, stepStr] = part.split('/')
const step = parseInt(stepStr, 10)
if (isNaN(step) || step <= 0) return false
if (rangePart === '*') {
return value % step === 0
}
// range/step e.g. 1-10/3
if (rangePart.includes('-')) {
const [startStr, endStr] = rangePart.split('-')
const start = parseInt(startStr, 10)
const end = parseInt(endStr, 10)
if (value < start || value > end) return false
return (value - start) % step === 0
}
// single/step e.g. 5/2 — treat as start with step
const start = parseInt(rangePart, 10)
if (value < start) return false
return (value - start) % step === 0
}
// Range: a-b
if (part.includes('-')) {
const [startStr, endStr] = part.split('-')
const start = parseInt(startStr, 10)
const end = parseInt(endStr, 10)
return value >= start && value <= end
}
// Exact number
return parseInt(part, 10) === value
}
/**
* Check whether a standard 5-field cron expression matches the given date.
* Fields: minute hour day-of-month month day-of-week
*/
export function cronMatches(cronExpr: string, date: Date): boolean {
const fields = cronExpr.trim().split(/\s+/)
if (fields.length !== 5) return false
const [minute, hour, dayOfMonth, month, dayOfWeek] = fields
return (
fieldMatches(minute, date.getMinutes()) &&
fieldMatches(hour, date.getHours()) &&
fieldMatches(dayOfMonth, date.getDate()) &&
fieldMatches(month, date.getMonth() + 1) &&
fieldMatches(dayOfWeek, date.getDay())
)
}
// ─── Log file I/O ──────────────────────────────────────────────────────────────
type RunsFile = { runs: TaskRun[] }
function getLogFilePath(): string {
const configDir =
process.env.CLAUDE_CONFIG_DIR || path.join(os.homedir(), '.claude')
return path.join(configDir, 'scheduled_tasks_log.json')
}
async function readRunsFile(): Promise<RunsFile> {
try {
const raw = await fs.readFile(getLogFilePath(), 'utf-8')
const parsed = JSON.parse(raw) as RunsFile
if (!Array.isArray(parsed.runs)) return { runs: [] }
return parsed
} catch (err: unknown) {
if ((err as NodeJS.ErrnoException).code === 'ENOENT') {
return { runs: [] }
}
throw err
}
}
async function writeRunsFile(data: RunsFile): Promise<void> {
const filePath = getLogFilePath()
const dir = path.dirname(filePath)
await fs.mkdir(dir, { recursive: true })
const tmpFile = `${filePath}.tmp.${Date.now()}`
try {
await fs.writeFile(tmpFile, JSON.stringify(data, null, 2) + '\n', 'utf-8')
await fs.rename(tmpFile, filePath)
} catch (err) {
await fs.unlink(tmpFile).catch(() => {})
throw err
}
}
/** Append a run to the log and trim to keep at most MAX_RUNS_PER_TASK per task. */
async function appendRun(run: TaskRun): Promise<void> {
const data = await readRunsFile()
data.runs.push(run)
trimRuns(data)
await writeRunsFile(data)
}
/** Update an existing run in the log (matched by run.id). */
async function updateRun(run: TaskRun): Promise<void> {
const data = await readRunsFile()
const idx = data.runs.findIndex((r) => r.id === run.id)
if (idx !== -1) {
data.runs[idx] = run
} else {
data.runs.push(run)
}
trimRuns(data)
await writeRunsFile(data)
}
const MAX_RUNS_PER_TASK = 100
/** Keep only the latest MAX_RUNS_PER_TASK entries per task. */
function trimRuns(data: RunsFile): void {
const countByTask = new Map<string, number>()
// Count from the end (newest first) and mark for removal
const keep = new Array<boolean>(data.runs.length).fill(false)
for (let i = data.runs.length - 1; i >= 0; i--) {
const taskId = data.runs[i].taskId
const count = countByTask.get(taskId) || 0
if (count < MAX_RUNS_PER_TASK) {
keep[i] = true
countByTask.set(taskId, count + 1)
}
}
data.runs = data.runs.filter((_, i) => keep[i])
}
// ─── Scheduler ─────────────────────────────────────────────────────────────────
const TASK_TIMEOUT_MS = 10 * 60 * 1000 // 10 minutes
type CronCliResolutionOptions = {
cliPath?: string | null
execPath?: string
appRoot?: string
cwd?: string
moduleDir?: string
env?: NodeJS.ProcessEnv
}
function isSourceProjectRoot(root: string): boolean {
return (
existsSync(path.join(root, 'preload.ts')) &&
existsSync(path.join(root, 'src', 'entrypoints', 'cli.tsx'))
)
}
function findSourceProjectRoot(startDir: string): string | null {
let current = path.resolve(startDir)
while (true) {
if (isSourceProjectRoot(current)) {
return current
}
const parent = path.dirname(current)
if (parent === current) {
return null
}
current = parent
}
}
export function resolveCronProjectRoot(
options: CronCliResolutionOptions = {},
): string {
const env = options.env ?? process.env
const explicitRoot = env.CC_HAHA_ROOT?.trim()
if (explicitRoot && isSourceProjectRoot(path.resolve(explicitRoot))) {
return path.resolve(explicitRoot)
}
const cwdRoot = findSourceProjectRoot(options.cwd ?? process.cwd())
if (cwdRoot) {
return cwdRoot
}
const moduleRoot = findSourceProjectRoot(options.moduleDir ?? import.meta.dir)
if (moduleRoot) {
return moduleRoot
}
return path.resolve(options.moduleDir ?? import.meta.dir, '../../..')
}
export function buildCronCliArgs(
baseArgs: string[],
options: CronCliResolutionOptions = {},
): string[] {
const launcher = resolveClaudeCliLauncher({
cliPath: options.cliPath ?? process.env.CLAUDE_CLI_PATH,
execPath: options.execPath ?? process.execPath,
})
if (launcher) {
return buildClaudeCliArgs(
launcher,
baseArgs,
options.appRoot ?? process.env.CLAUDE_APP_ROOT,
)
}
const projectRoot = resolveCronProjectRoot(options)
return [
'bun',
'--preload',
path.join(projectRoot, 'preload.ts'),
path.join(projectRoot, 'src', 'entrypoints', 'cli.tsx'),
...baseArgs,
]
}
export class CronScheduler {
private intervalId: Timer | null = null
private runningTasks = new Map<
string,
{ proc: ReturnType<typeof Bun.spawn>; startedAt: number; runId: string }
>()
/** Track which minute each task last fired (prevents same-process duplicate within a minute). */
private lastFiredMinuteKey = new Map<string, string>()
private cronService: CronService
private sessionService: SessionService
private providerService = new ProviderService()
constructor(cronService?: CronService) {
this.cronService = cronService || new CronService()
this.sessionService = new SessionService()
}
/** Return a string key representing the calendar minute of `date`. */
private static minuteKey(date: Date): string {
return `${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()}-${date.getHours()}-${date.getMinutes()}`
}
/** Start the scheduler (called on server boot). */
start(): void {
if (this.intervalId) return // already running
console.log('[CronScheduler] Starting — checking every 60 s')
// Clean up stale "running" entries left by previously crashed processes
this.cleanupStaleRuns().catch((err) =>
console.error('[CronScheduler] Error cleaning up stale runs:', err),
)
this.intervalId = setInterval(() => this.tick(), 60_000)
// Immediate first check
this.tick()
}
/** Stop the scheduler and kill any running task processes. */
stop(): void {
const wasRunning = this.intervalId !== null || this.runningTasks.size > 0
if (!wasRunning) return
if (this.intervalId) {
clearInterval(this.intervalId)
this.intervalId = null
}
for (const [taskId, entry] of this.runningTasks) {
try {
entry.proc.kill()
} catch {
// process may have already exited
}
this.runningTasks.delete(taskId)
}
console.log('[CronScheduler] Stopped')
}
/** One tick of the scheduler — evaluate all tasks against the current time. */
async tick(): Promise<void> {
try {
const tasks = await this.cronService.listTasks()
const now = new Date()
const currentKey = CronScheduler.minuteKey(now)
for (const task of tasks) {
// Skip disabled tasks
if (task.enabled === false) continue
// Skip if already running (in-memory guard — same process)
if (this.runningTasks.has(task.id)) continue
// Skip if this process already fired the task in the current minute
if (this.lastFiredMinuteKey.get(task.id) === currentKey) continue
// Skip if ANY process already fired the task in the current minute
// (cross-process guard via file-persisted lastFiredAt)
if (task.lastFiredAt) {
const lastFiredKey = CronScheduler.minuteKey(new Date(task.lastFiredAt))
if (lastFiredKey === currentKey) continue
}
if (cronMatches(task.cron, now)) {
// Record the minute key BEFORE firing to prevent double-fire
this.lastFiredMinuteKey.set(task.id, currentKey)
// Fire and forget — don't await; we want all matching tasks to start
this.executeTask(task).catch((err) => {
console.error(
`[CronScheduler] Unhandled error executing task ${task.id}:`,
err,
)
})
}
}
} catch (err) {
console.error('[CronScheduler] Error during tick:', err)
}
}
/**
* Execute a single task by spawning a CLI subprocess.
* @param task The task to execute
* @param options.createSession When true, creates a Session for rich output viewing (used for manual "Run Now")
*/
async executeTask(task: CronTask, options?: { createSession?: boolean }): Promise<TaskRun> {
// Prevent concurrent executions of the same task
const existing = this.runningTasks.get(task.id)
if (existing) {
console.log(
`[CronScheduler] Task ${task.id} is already running (runId=${existing.runId}), skipping`,
)
return {
id: existing.runId,
taskId: task.id,
taskName: task.name || task.prompt.slice(0, 60),
startedAt: new Date(existing.startedAt).toISOString(),
status: 'running',
prompt: task.prompt,
}
}
const runId = crypto.randomBytes(6).toString('hex')
const startedAt = new Date().toISOString()
let workDir = task.folderPath || os.homedir()
if (task.folderPath && (!existsSync(task.folderPath) || !statSync(task.folderPath).isDirectory())) {
console.warn(`[cron] task ${task.id}: folderPath "${task.folderPath}" is not a valid directory, falling back to homedir`)
workDir = os.homedir()
}
workDir = this.resolveCanonicalWorkDir(workDir)
// Only create a session when explicitly requested (manual "Run Now"),
// not for automatic cron runs — avoids flooding the sidebar.
let sessionId: string | undefined
if (options?.createSession) {
try {
const result = await this.sessionService.createSession(
workDir,
undefined,
'bypassPermissions',
)
sessionId = result.sessionId
// Delete the placeholder JSONL file so the CLI can create it fresh
// with actual content. Same pattern as conversationService.ts.
await this.sessionService.deleteSessionFile(sessionId)
} catch {
// Fall back to no session if creation fails
}
}
const run: TaskRun = {
id: runId,
taskId: task.id,
taskName: task.name || task.prompt.slice(0, 60),
startedAt,
status: 'running',
prompt: task.prompt,
sessionId,
}
// Update lastFiredAt IMMEDIATELY so other scheduler processes see it
// and skip this task in the current minute (cross-process dedup).
await this.cronService.updateLastFired(task.id, startedAt)
// Persist the "running" state
await appendRun(run)
const inputPayload = JSON.stringify({
type: 'user',
message: {
role: 'user',
content: [{ type: 'text', text: task.prompt }],
},
parent_tool_use_id: null,
session_id: sessionId || '',
}) + '\n'
const cliArgs = buildCronCliArgs([
'--print',
'--verbose',
'--input-format',
'stream-json',
'--output-format',
'stream-json',
...(sessionId ? ['--session-id', sessionId] : []),
...this.getRuntimeArgs(task),
])
const childEnv = await this.buildTaskChildEnv(workDir, task)
const proc = Bun.spawn(
cliArgs,
buildCronTaskSpawnOptions(workDir, childEnv),
)
this.runningTasks.set(task.id, { proc, startedAt: Date.now(), runId })
// Write prompt to stdin then close it
try {
proc.stdin.write(inputPayload)
proc.stdin.end()
} catch {
// If writing fails, the process may have already exited
}
// Set up a timeout
const timeoutId = setTimeout(() => {
if (this.runningTasks.has(task.id)) {
try {
proc.kill()
} catch {
// ignore
}
}
}, TASK_TIMEOUT_MS)
try {
// Collect stdout
const stdoutChunks: string[] = []
if (proc.stdout) {
const reader = proc.stdout.getReader()
const decoder = new TextDecoder()
try {
while (true) {
const { done, value } = await reader.read()
if (done) break
stdoutChunks.push(decoder.decode(value, { stream: true }))
}
} catch {
// stream may be interrupted on kill
}
}
// Wait for exit
const exitCode = await proc.exited
clearTimeout(timeoutId)
this.runningTasks.delete(task.id)
const completedAt = new Date().toISOString()
const rawOutput = stdoutChunks.join('')
const durationMs =
new Date(completedAt).getTime() - new Date(startedAt).getTime()
// Determine if this was a timeout
const wasTimeout = durationMs >= TASK_TIMEOUT_MS
// Extract only meaningful AI text responses from raw NDJSON output.
// The raw stream contains system/init messages, tool_use blocks, and
// tool_result echoes that consume thousands of chars before any actual
// AI answer appears. A naive .slice(0, 10_000) would lose the answer.
const output = extractAssistantText(rawOutput)
const completedRun: TaskRun = {
...run,
completedAt,
status: wasTimeout ? 'timeout' : exitCode === 0 ? 'completed' : 'failed',
output: output.slice(0, 50_000), // cap after extraction
exitCode,
durationMs,
}
// Collect stderr for error field
if (exitCode !== 0 && proc.stderr) {
try {
const stderrText = await new Response(proc.stderr).text()
completedRun.error = stderrText.slice(0, 5_000)
} catch {
// ignore
}
}
await this.persistScheduledSessionPermission(sessionId, workDir)
await updateRun(completedRun)
// Send IM notification if configured
if (task.notification?.enabled && task.notification.channels.length > 0) {
sendTaskNotification(completedRun, task.notification).catch((err) => {
console.error(`[CronScheduler] Notification error for task ${task.id}:`, err)
})
}
// If non-recurring, disable after first run
if (!task.recurring) {
await this.cronService.updateTask(task.id, { enabled: false }).catch(() => {
// Task may have been deleted
})
}
return completedRun
} catch (err) {
clearTimeout(timeoutId)
this.runningTasks.delete(task.id)
const completedAt = new Date().toISOString()
const failedRun: TaskRun = {
...run,
completedAt,
status: 'failed',
error: (err as Error).message,
durationMs:
new Date(completedAt).getTime() - new Date(startedAt).getTime(),
}
await this.persistScheduledSessionPermission(sessionId, workDir)
await updateRun(failedRun)
return failedRun
}
}
private async persistScheduledSessionPermission(
sessionId: string | undefined,
workDir: string,
): Promise<void> {
if (!sessionId) return
await this.sessionService.appendSessionMetadata(sessionId, {
workDir,
permissionMode: 'bypassPermissions',
}).catch(() => {
// The task result is still valid even if session metadata refresh fails.
})
}
private resolveCanonicalWorkDir(workDir: string): string {
try {
return realpathSync(workDir)
} catch {
return workDir
}
}
private getRuntimeArgs(task: CronTask): string[] {
const model = task.model?.trim()
return [
...(model ? ['--model', model] : []),
'--dangerously-skip-permissions',
]
}
private async buildTaskChildEnv(
workDir: string,
task: CronTask,
): Promise<Record<string, string | undefined>> {
const cleanEnv = await getProcessEnvWithTerminalShellEnvironment()
delete cleanEnv.CLAUDE_CODE_OAUTH_TOKEN
if (this.shouldStripInheritedProviderEnv(task.providerId)) {
for (const key of Object.keys(cleanEnv)) {
if (isProviderManagedEnvVar(key)) {
delete cleanEnv[key]
}
}
}
const explicitProviderEnv =
typeof task.providerId === 'string'
? await this.providerService.getProviderRuntimeEnv(task.providerId)
: null
if (explicitProviderEnv && task.model?.trim()) {
explicitProviderEnv.ANTHROPIC_MODEL = task.model.trim()
}
const attributionHeaderEnv = attributionHeaderEnvForModel(
task.model?.trim() ||
explicitProviderEnv?.ANTHROPIC_MODEL ||
cleanEnv.ANTHROPIC_MODEL,
)
return {
...cleanEnv,
CLAUDE_CODE_ENABLE_TASKS: '1',
CLAUDE_CODE_ENTRYPOINT: 'sdk-cli',
CALLER_DIR: workDir,
PWD: workDir,
CC_HAHA_SKIP_DOTENV: '1',
...(explicitProviderEnv
? {
CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST: '1',
CLAUDE_CODE_ENTRYPOINT: 'sdk-cli',
}
: {}),
...(explicitProviderEnv ?? {}),
...(this.shouldMarkManagedOAuth(task.providerId)
? await this.buildOfficialOAuthEnv()
: {}),
...attributionHeaderEnv,
}
}
private getConfigDir(): string {
return process.env.CLAUDE_CONFIG_DIR || path.join(os.homedir(), '.claude')
}
private shouldStripInheritedProviderEnv(providerId?: string | null): boolean {
if (providerId !== undefined) {
return true
}
const ccHahaDir = path.join(this.getConfigDir(), 'cc-haha')
if (existsSync(path.join(ccHahaDir, 'providers.json'))) {
return true
}
try {
const raw = readFileSync(path.join(ccHahaDir, 'settings.json'), 'utf-8')
const parsed = JSON.parse(raw) as { env?: Record<string, string> }
const env = parsed.env ?? {}
return Object.entries(env).some(
([key, value]) =>
isProviderManagedEnvVar(key) &&
typeof value === 'string' &&
value.trim().length > 0,
)
} catch {
return false
}
}
private shouldMarkManagedOAuth(providerId?: string | null): boolean {
if (providerId === null) {
return true
}
if (typeof providerId === 'string') {
return false
}
try {
const raw = readFileSync(
path.join(this.getConfigDir(), 'cc-haha', 'settings.json'),
'utf-8',
)
const parsed = JSON.parse(raw) as { env?: Record<string, string> }
const env = parsed.env ?? {}
const hasProviderEnv = [
'ANTHROPIC_API_KEY',
'ANTHROPIC_AUTH_TOKEN',
'ANTHROPIC_BASE_URL',
].some(
(key) =>
typeof env[key] === 'string' && env[key]!.trim().length > 0,
)
return !hasProviderEnv
} catch {
return true
}
}
private async buildOfficialOAuthEnv(): Promise<Record<string, string>> {
const env: Record<string, string> = {
CLAUDE_CODE_ENTRYPOINT: 'claude-desktop',
}
try {
const { hahaOAuthService } = await import('./hahaOAuthService.js')
const token = await hahaOAuthService.ensureFreshAccessToken()
if (token) {
env.CLAUDE_CODE_OAUTH_TOKEN = token
}
} catch (err) {
console.error(
'[cronScheduler] ensureFreshAccessToken failed:',
err instanceof Error ? err.message : err,
)
}
return env
}
// ─── Cleanup ───────────────────────────────────────────────────────────────
/**
* Mark stale "running" entries as "failed" on startup.
* These are leftover from previous process instances that crashed or were
* killed before they could update the run log.
*/
private async cleanupStaleRuns(): Promise<void> {
const data = await readRunsFile()
let changed = false
const now = Date.now()
for (const run of data.runs) {
if (run.status !== 'running') continue
const startedAt = new Date(run.startedAt).getTime()
// If "running" for longer than the task timeout + 1-minute buffer,
// the owning process is certainly dead.
if (now - startedAt > TASK_TIMEOUT_MS + 60_000) {
run.status = 'failed'
run.error = 'Process terminated before task could complete'
run.completedAt = new Date().toISOString()
run.durationMs = now - startedAt
changed = true
console.log(
`[CronScheduler] Cleaned up stale run ${run.id} for task ${run.taskId}`,
)
}
}
if (changed) {
await writeRunsFile(data)
}
}
// ─── Query helpers ─────────────────────────────────────────────────────────
/** Get execution history for a specific task. */
async getTaskRuns(taskId: string): Promise<TaskRun[]> {
const data = await readRunsFile()
return data.runs
.filter((r) => r.taskId === taskId)
.sort(
(a, b) =>
new Date(b.startedAt).getTime() - new Date(a.startedAt).getTime(),
)
}
/** Get recent runs across all tasks. */
async getRecentRuns(limit = 50): Promise<TaskRun[]> {
const data = await readRunsFile()
return data.runs
.sort(
(a, b) =>
new Date(b.startedAt).getTime() - new Date(a.startedAt).getTime(),
)
.slice(0, limit)
}
}
// ─── Singleton export ──────────────────────────────────────────────────────────
export const cronScheduler = new CronScheduler()