harn-stdlib 0.8.22

Embedded Harn standard library source catalog
Documentation
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import { filter_nil } from "std/collections"

/**
 * std/dashboard/jobs - host-facing job status envelopes for orchestrator
 * dashboards.
 *
 * Harn emits workflow, schedule, approval, receipt, replay, and DLQ progress
 * as typed `harn.dashboard_job_event.v1` records. Hosts render queue/job
 * cards from normalized fields while raw local or cloud runtime payloads remain
 * separate for audit and replay.
 */
type DashboardJobEventKind = "scheduled_job.created" | "scheduled_job.updated" | "scheduled_job.canceled" | "run.queued" | "run.started" | "run.progress" | "run.succeeded" | "run.failed" | "approval.requested" | "approval.approved" | "approval.denied" | "approval.expired" | "receipt.available" | "replay_fixture.available" | "dlq.created" | "dlq.replayed" | "dlq.dismissed" | string

type DashboardJobStatus = "scheduled" | "queued" | "running" | "waiting_approval" | "succeeded" | "failed" | "dlq" | "canceled" | "unknown" | string

type DashboardJobRef = {kind: string, label?: string, id?: string, url?: string}

type DashboardJobSource = {
  runtime: string,
  environment: string,
  id?: string,
  url?: string,
  region?: string,
}

type DashboardJobSourceClock = {kind: string, timestamp: string}

type DashboardJobPrivacy = {
  redacted: bool,
  raw_payload_retained: bool,
  contains_sensitive: bool,
  flags: list<string>,
}

type DashboardJobActionIntent = {
  kind: string,
  label: string,
  target: dict,
  effect: string,
  requires_approval: bool,
}

type DashboardApprovalState = {
  request_id: string,
  status: string,
  requested_at?: string,
  decided_at?: string,
  reviewer?: string,
  expires_at?: string,
  summary?: string,
}

type DashboardDlqState = {
  dlq_id: string,
  state: string,
  attempts?: int,
  error_class?: string,
  final_error?: string,
  replay_of_event_id?: string,
}

type DashboardJobEvent = {
  schema: "harn.dashboard_job_event.v1",
  id: string,
  dedupe_key: string,
  kind: DashboardJobEventKind,
  source: DashboardJobSource,
  source_clock: DashboardJobSourceClock,
  tenant_id?: string,
  workspace_id?: string,
  job_id: string,
  run_id?: string,
  workflow_id?: string,
  trigger_id?: string,
  binding_id?: string,
  event_id?: string,
  queue?: string,
  status: DashboardJobStatus,
  title: string,
  summary: string,
  priority?: string,
  queue_depth?: int,
  attempt?: int,
  max_attempts?: int,
  result?: dict,
  error?: string,
  approval?: DashboardApprovalState,
  dlq?: DashboardDlqState,
  receipt_refs: list<DashboardJobRef>,
  replay_refs: list<DashboardJobRef>,
  related_refs: list<DashboardJobRef>,
  action_intents: list<DashboardJobActionIntent>,
  privacy: DashboardJobPrivacy,
  raw_payload: dict,
}

type DashboardJobEmitReceipt = {
  schema: "harn.dashboard_job_event_emit_receipt.v1",
  topic: string,
  kind: "dashboard_job_event",
  event_log_id: int,
  event: DashboardJobEvent,
}

type DashboardJobCard = {
  schema: "harn.dashboard_job_card.v1",
  job_id: string,
  title: string,
  status: DashboardJobStatus,
  latest_event_id: string,
  updated_at: string,
  run_id?: string,
  workflow_id?: string,
  trigger_id?: string,
  binding_id?: string,
  queue?: string,
  queue_depth?: int,
  priority?: string,
  last_result?: dict,
  last_error?: string,
  approval?: DashboardApprovalState,
  dlq?: DashboardDlqState,
  receipt_refs: list<DashboardJobRef>,
  replay_refs: list<DashboardJobRef>,
  related_refs: list<DashboardJobRef>,
  action_intents: list<DashboardJobActionIntent>,
}

let DASHBOARD_JOB_EVENT_SCHEMA = "harn.dashboard_job_event.v1"

let DASHBOARD_JOB_EVENT_KIND = "dashboard_job_event"

let DASHBOARD_JOB_EVENT_TOPIC = "dashboard.jobs.events"

let DASHBOARD_JOB_CARD_SCHEMA = "harn.dashboard_job_card.v1"

let DASHBOARD_JOBS_VIEW_SCHEMA = "harn.dashboard_jobs_view.v1"

fn __job_text(value) {
  if value == nil {
    return ""
  }
  return trim(to_string(value))
}

fn __job_first(values) {
  for value in values {
    let text = __job_text(value)
    if text != "" {
      return text
    }
  }
  return nil
}

fn __job_list(value) {
  if value == nil {
    return []
  }
  if type_of(value) != "list" {
    throw "std/dashboard/jobs: expected list value"
  }
  return value
}

fn __job_string_list(value) {
  var out = []
  for item in __job_list(value) {
    let text = __job_text(item)
    if text != "" {
      out = out.push(text)
    }
  }
  return out
}

fn __job_payload(input) {
  return input?.raw_payload ?? input?.payload ?? input?.provider_payload ?? input ?? {}
}

fn __job_kind(kind, input, options) {
  let resolved = __job_first([kind, options?.kind, input?.kind, input?.event_kind])
  if resolved == nil {
    throw "std/dashboard/jobs: kind is required"
  }
  return resolved
}

fn __job_status_for_kind(kind) {
  if kind == "scheduled_job.created" || kind == "scheduled_job.updated" {
    return "scheduled"
  }
  if kind == "scheduled_job.canceled" || kind == "dlq.dismissed" {
    return "canceled"
  }
  if kind == "run.queued" || kind == "dlq.replayed" {
    return "queued"
  }
  if kind == "run.started" || kind == "run.progress" || kind == "approval.approved" {
    return "running"
  }
  if kind == "run.succeeded" {
    return "succeeded"
  }
  if kind == "receipt.available" || kind == "replay_fixture.available" {
    return "unknown"
  }
  if kind == "run.failed" || kind == "approval.denied" || kind == "approval.expired" {
    return "failed"
  }
  if kind == "approval.requested" {
    return "waiting_approval"
  }
  if kind == "dlq.created" {
    return "dlq"
  }
  return "unknown"
}

fn __job_timestamp(input, payload, options) {
  return __job_first(
    [
      options?.source_timestamp,
      options?.timestamp,
      options?.source_clock?.timestamp,
      input?.source_timestamp,
      input?.timestamp,
      input?.source_clock?.timestamp,
      input?.queued_at,
      input?.started_at,
      input?.completed_at,
      input?.created_at,
      input?.updated_at,
      input?.requested_at,
      input?.decided_at,
      payload?.source_timestamp,
      payload?.timestamp,
      payload?.source_clock?.timestamp,
      payload?.queued_at,
      payload?.started_at,
      payload?.completed_at,
      payload?.created_at,
      payload?.updated_at,
      payload?.requested_at,
      payload?.decided_at,
    ],
  )
}

fn __job_source_clock_kind(input, payload, options) {
  let raw = options?.source_clock ?? input?.source_clock ?? payload?.source_clock
  if type_of(raw) == "dict" {
    return __job_first([raw?.kind])
  }
  return __job_first([raw])
}

fn __job_source(input, payload, options) {
  return filter_nil(
    {
      runtime: __job_first([options?.runtime, input?.runtime, payload?.runtime]) ?? "harn",
      environment: __job_first([options?.environment, input?.environment, payload?.environment]) ?? "local",
      id: __job_first([options?.source_id, input?.source_id, payload?.source_id]),
      url: __job_first([options?.source_url, input?.source_url, input?.status_url, payload?.source_url]),
      region: __job_first([options?.region, input?.region, payload?.region]),
    },
  )
}

fn __job_source_clock(timestamp, input, payload, options) {
  let explicit = __job_source_clock_kind(input, payload, options)
  let environment = __job_source(input, payload, options).environment
  let fallback = environment == "cloud" ? "harn-cloud" : "harn-local"
  return {kind: explicit ?? fallback, timestamp: timestamp}
}

fn __job_id(input, payload, options) {
  let id = __job_first(
    [
      options?.job_id,
      input?.job_id,
      input?.schedule_id,
      input?.workflow_id,
      input?.trigger_id,
      input?.binding_id,
      payload?.job_id,
      payload?.schedule_id,
      payload?.workflow_id,
      payload?.trigger_id,
      payload?.binding_id,
    ],
  )
  if id == nil {
    throw "std/dashboard/jobs: job_id is required"
  }
  return id
}

fn __job_run_id(input, payload, options) {
  return __job_first(
    [
      options?.run_id,
      input?.run_id,
      input?.managed_run_id,
      input?.dispatch_id,
      payload?.run_id,
      payload?.managed_run_id,
      payload?.dispatch_id,
    ],
  )
}

fn __job_refs(value) {
  var out = []
  for ref in __job_list(value) {
    if type_of(ref) != "dict" {
      throw "std/dashboard/jobs: refs must be dicts"
    }
    let kind = __job_text(ref?.kind)
    if kind == "" {
      throw "std/dashboard/jobs: ref.kind is required"
    }
    let id = __job_first([ref?.id])
    let url = __job_first([ref?.url])
    if id == nil && url == nil {
      throw "std/dashboard/jobs: ref.id or ref.url is required"
    }
    out = out.push(filter_nil({kind: kind, label: __job_first([ref?.label]), id: id, url: url}))
  }
  return out
}

fn __job_related_refs(input, payload, options) {
  let refs = options?.related_refs ?? input?.related_refs ?? payload?.related_refs
  if refs != nil {
    return __job_refs(refs)
  }
  let source_url = __job_first([options?.source_url, input?.source_url, input?.status_url, payload?.source_url])
  if source_url != nil {
    return [{kind: "source", label: "Source", url: source_url}]
  }
  return []
}

fn __job_receipt_refs(input, payload, options) {
  let refs = options?.receipt_refs ?? input?.receipt_refs ?? payload?.receipt_refs
  if refs != nil {
    return __job_refs(refs)
  }
  let receipt_id = __job_first([options?.receipt_id, input?.receipt_id, payload?.receipt_id])
  let receipt_url = __job_first([options?.receipt_url, input?.receipt_url, payload?.receipt_url])
  if receipt_id != nil || receipt_url != nil {
    return [filter_nil({kind: "receipt", label: "Receipt", id: receipt_id, url: receipt_url})]
  }
  return []
}

fn __job_replay_refs(input, payload, options) {
  let refs = options?.replay_refs ?? input?.replay_refs ?? payload?.replay_refs
  if refs != nil {
    return __job_refs(refs)
  }
  let replay_id = __job_first([options?.replay_id, input?.replay_id, payload?.replay_id])
  let replay_url = __job_first([options?.replay_url, input?.replay_url, payload?.replay_url])
  if replay_id != nil || replay_url != nil {
    return [filter_nil({kind: "replay_fixture", label: "Replay fixture", id: replay_id, url: replay_url})]
  }
  return []
}

fn __job_privacy(input, options) {
  let privacy = input?.privacy ?? {}
  return {
    redacted: options?.redacted ?? privacy?.redacted ?? false,
    raw_payload_retained: options?.raw_payload_retained ?? privacy?.raw_payload_retained ?? true,
    contains_sensitive: options?.contains_sensitive ?? privacy?.contains_sensitive ?? false,
    flags: __job_string_list(options?.privacy_flags ?? privacy?.flags ?? []),
  }
}

fn __job_approval(input, payload, options) {
  let raw = options?.approval ?? input?.approval ?? payload?.approval
  let request_id = __job_first(
    [
      raw?.request_id,
      options?.approval_request_id,
      input?.approval_request_id,
      payload?.approval_request_id,
      input?.request_id,
      payload?.request_id,
    ],
  )
  if raw == nil && request_id == nil {
    return nil
  }
  return filter_nil(
    {
      request_id: request_id,
      status: __job_first([raw?.status, options?.approval_status, input?.approval_status]) ?? "requested",
      requested_at: __job_first([raw?.requested_at, input?.requested_at, payload?.requested_at]),
      decided_at: __job_first([raw?.decided_at, input?.decided_at, payload?.decided_at]),
      reviewer: __job_first([raw?.reviewer, input?.reviewer, payload?.reviewer]),
      expires_at: __job_first([raw?.expires_at, input?.expires_at, payload?.expires_at]),
      summary: __job_first([raw?.summary, input?.approval_summary, payload?.approval_summary]),
    },
  )
}

fn __job_dlq(input, payload, options) {
  let raw = options?.dlq ?? input?.dlq ?? payload?.dlq
  let dlq_id = __job_first([raw?.dlq_id, options?.dlq_id, input?.dlq_id, payload?.dlq_id])
  if raw == nil && dlq_id == nil {
    return nil
  }
  return filter_nil(
    {
      dlq_id: dlq_id,
      state: __job_first([raw?.state, input?.dlq_state, payload?.dlq_state]) ?? "pending",
      attempts: raw?.attempts ?? input?.attempts ?? payload?.attempts,
      error_class: __job_first([raw?.error_class, input?.error_class, payload?.error_class]),
      final_error: __job_first([raw?.final_error, input?.final_error, input?.error, payload?.final_error]),
      replay_of_event_id: __job_first([raw?.replay_of_event_id, input?.replay_of_event_id, payload?.replay_of_event_id]),
    },
  )
}

fn __job_default_actions(kind, job_id, run_id, approval, dlq, receipt_refs, replay_refs) {
  let target = filter_nil({job_id: job_id, run_id: run_id})
  var out = [
    {
      kind: "open_job",
      label: "Open job",
      target: target,
      effect: "navigation",
      requires_approval: false,
    },
  ]
  if len(receipt_refs) > 0 {
    out = out
      .push(
      {
        kind: "open_receipt",
        label: "Open receipt",
        target: target.merge({receipt_refs: receipt_refs}),
        effect: "navigation",
        requires_approval: false,
      },
    )
  }
  if len(replay_refs) > 0 {
    out = out
      .push(
      {
        kind: "open_replay_fixture",
        label: "Open replay fixture",
        target: target.merge({replay_refs: replay_refs}),
        effect: "navigation",
        requires_approval: false,
      },
    )
  }
  if approval != nil && kind == "approval.requested" {
    out = out
      .push(
      {
        kind: "review_approval",
        label: "Review approval",
        target: target.merge({approval_request_id: approval.request_id}),
        effect: "host_approval_decision",
        requires_approval: true,
      },
    )
  }
  if dlq != nil && kind == "dlq.created" {
    out = out
      .push(
      {
        kind: "replay_dlq",
        label: "Replay DLQ item",
        target: target.merge({dlq_id: dlq.dlq_id}),
        effect: "orchestrator_replay",
        requires_approval: true,
      },
    )
      .push(
      {
        kind: "dismiss_dlq",
        label: "Dismiss DLQ item",
        target: target.merge({dlq_id: dlq.dlq_id}),
        effect: "orchestrator_dlq_state",
        requires_approval: true,
      },
    )
  }
  return out
}

/** Build a stable dashboard event dedupe key from job provenance. */
pub fn dashboard_job_dedupe_key(kind, job_id, run_id = nil, timestamp = nil, source_id = nil) -> string {
  let seed = __job_text(kind)
    + "\n"
    + __job_text(job_id)
    + "\n"
    + __job_text(run_id)
    + "\n"
    + __job_text(timestamp)
    + "\n"
    + __job_text(source_id)
  return "dashboard_job:" + substring(sha256(seed), 0, 32)
}

fn __job_validate_required(event) {
  if event.schema != DASHBOARD_JOB_EVENT_SCHEMA {
    throw "std/dashboard/jobs: unsupported schema " + __job_text(event.schema)
  }
  for key in ["id", "dedupe_key", "kind", "job_id", "status", "title", "summary"] {
    if __job_text(event[key]) == "" {
      throw "std/dashboard/jobs: " + key + " is required"
    }
  }
  if __job_text(event.source_clock.kind) == "" || __job_text(event.source_clock.timestamp) == "" {
    throw "std/dashboard/jobs: source_clock.kind and source_clock.timestamp are required"
  }
  if __job_text(event.source.runtime) == "" || __job_text(event.source.environment) == "" {
    throw "std/dashboard/jobs: source.runtime and source.environment are required"
  }
}

fn __job_validate_kind_requirements(event) {
  if event.kind.starts_with("run.") && __job_text(event.run_id) == "" {
    throw "std/dashboard/jobs: run_id is required for run events"
  }
  if event.kind.starts_with("approval.") {
    if event.approval == nil || __job_text(event.approval.request_id) == "" {
      throw "std/dashboard/jobs: approval.request_id is required for approval events"
    }
  }
  if event.kind.starts_with("dlq.") {
    if event.dlq == nil || __job_text(event.dlq.dlq_id) == "" {
      throw "std/dashboard/jobs: dlq.dlq_id is required for DLQ events"
    }
  }
  if event.kind == "receipt.available" && len(event.receipt_refs) == 0 {
    throw "std/dashboard/jobs: receipt.available requires receipt_refs"
  }
  if event.kind == "replay_fixture.available" && len(event.replay_refs) == 0 {
    throw "std/dashboard/jobs: replay_fixture.available requires replay_refs"
  }
}

fn __job_validate_refs(event) {
  let _ = __job_refs(event.receipt_refs)
  let _ = __job_refs(event.replay_refs)
  let _ = __job_refs(event.related_refs)
}

fn __job_validate_action_intents(event) {
  for intent in event.action_intents ?? [] {
    let effect = __job_text(intent.effect)
    if __job_text(intent.kind) == "" || __job_text(intent.label) == "" || effect == "" {
      throw "std/dashboard/jobs: action intent kind, label, and effect are required"
    }
    if type_of(intent.target) != "dict" {
      throw "std/dashboard/jobs: action intent target must be a dict"
    }
    if effect != "navigation" && effect != "read" && !(intent.requires_approval ?? false) {
      throw "std/dashboard/jobs: action intent `" + __job_text(intent.kind) + "` must require approval"
    }
  }
}

/** Validate mandatory dashboard provenance and host action boundaries. */
pub fn dashboard_job_validate(event: DashboardJobEvent) -> DashboardJobEvent {
  __job_validate_required(event)
  __job_validate_kind_requirements(event)
  __job_validate_refs(event)
  __job_validate_action_intents(event)
  return event
}

/**
 * Normalize local or cloud orchestrator status payloads into one dashboard
 * event envelope.
 */
pub fn dashboard_job_event(kind, input = nil, options = nil) -> DashboardJobEvent {
  let opts = options ?? {}
  let payload = __job_payload(input)
  let resolved_kind = __job_kind(kind, input, opts)
  let timestamp = __job_timestamp(input, payload, opts)
  if timestamp == nil {
    throw "std/dashboard/jobs: source timestamp is required"
  }
  let job_id = __job_id(input, payload, opts)
  let run_id = __job_run_id(input, payload, opts)
  let source = __job_source(input, payload, opts)
  let receipt_refs = __job_receipt_refs(input, payload, opts)
  let replay_refs = __job_replay_refs(input, payload, opts)
  let approval = __job_approval(input, payload, opts)
  let dlq = __job_dlq(input, payload, opts)
  let privacy = __job_privacy(input, opts)
  let dedupe_key = opts.dedupe_key ?? input?.dedupe_key
    ?? dashboard_job_dedupe_key(resolved_kind, job_id, run_id, timestamp, source.id)
  let event = {
    schema: DASHBOARD_JOB_EVENT_SCHEMA,
    id: opts.id ?? input?.dashboard_event_id ?? ("dash_job_evt_" + substring(sha256(dedupe_key), 0, 24)),
    dedupe_key: dedupe_key,
    kind: resolved_kind,
    source: source,
    source_clock: __job_source_clock(timestamp, input, payload, opts),
    tenant_id: __job_first([opts.tenant_id, input?.tenant_id, payload?.tenant_id]),
    workspace_id: __job_first([opts.workspace_id, input?.workspace_id, payload?.workspace_id]),
    job_id: job_id,
    run_id: run_id,
    workflow_id: __job_first([opts.workflow_id, input?.workflow_id, payload?.workflow_id]),
    trigger_id: __job_first([opts.trigger_id, input?.trigger_id, payload?.trigger_id]),
    binding_id: __job_first([opts.binding_id, input?.binding_id, payload?.binding_id]),
    event_id: __job_first([opts.event_id, input?.event_id, payload?.event_id]),
    queue: __job_first([opts.queue, input?.queue, payload?.queue]),
    status: opts.status ?? input?.status ?? __job_status_for_kind(resolved_kind),
    title: __job_first(
      [opts.title, input?.title, input?.workflow_name, payload?.title, payload?.workflow_name],
    )
      ?? job_id,
    summary: __job_first([opts.summary, input?.summary, payload?.summary])
      ?? (__job_status_for_kind(resolved_kind) + ": " + job_id),
    priority: __job_first([opts.priority, input?.priority, payload?.priority]),
    queue_depth: opts.queue_depth ?? input?.queue_depth ?? payload?.queue_depth,
    attempt: opts.attempt ?? input?.attempt ?? payload?.attempt,
    max_attempts: opts.max_attempts ?? input?.max_attempts ?? payload?.max_attempts,
    result: opts.result ?? input?.result ?? payload?.result,
    error: __job_first([opts.error, input?.error, payload?.error]),
    approval: approval,
    dlq: dlq,
    receipt_refs: receipt_refs,
    replay_refs: replay_refs,
    related_refs: __job_related_refs(input, payload, opts),
    action_intents: opts.action_intents ?? input?.action_intents
      ?? __job_default_actions(resolved_kind, job_id, run_id, approval, dlq, receipt_refs, replay_refs),
    privacy: privacy,
    raw_payload: privacy.raw_payload_retained ? payload : {},
  }
  return dashboard_job_validate(filter_nil(event))
}

/** Emit a dashboard job event to the EventLog and return an audit receipt. */
pub fn dashboard_job_emit(input: DashboardJobEvent, options = nil) -> DashboardJobEmitReceipt {
  let opts = options ?? {}
  let event = dashboard_job_validate(input)
  let topic = opts.topic ?? DASHBOARD_JOB_EVENT_TOPIC
  let event_log_id = event_log
    .emit(
    topic,
    DASHBOARD_JOB_EVENT_KIND,
    event,
    filter_nil(
      {
        schema: DASHBOARD_JOB_EVENT_SCHEMA,
        job_id: event.job_id,
        run_id: event.run_id,
        status: event.status,
      },
    ),
  )
  return {
    schema: "harn.dashboard_job_event_emit_receipt.v1",
    topic: topic,
    kind: DASHBOARD_JOB_EVENT_KIND,
    event_log_id: event_log_id,
    event: event,
  }
}

/** Drop duplicate dashboard events by `dedupe_key`, preserving first-seen order. */
pub fn dashboard_job_dedupe_events(events: list) -> list<DashboardJobEvent> {
  var seen = {}
  var out = []
  for item in events {
    let event = dashboard_job_validate(item)
    if seen[event.dedupe_key] == nil {
      seen[event.dedupe_key] = true
      out = out.push(event)
    }
  }
  return out
}

fn __job_append_refs(existing, refs) {
  var out = existing ?? []
  for ref in refs ?? [] {
    let key = __job_text(ref.kind) + ":" + __job_text(ref.id) + ":" + __job_text(ref.url)
    var found = false
    for current in out {
      let current_key = __job_text(current.kind) + ":" + __job_text(current.id) + ":" + __job_text(current.url)
      if current_key == key {
        found = true
      }
    }
    if !found {
      out = out.push(ref)
    }
  }
  return out
}

fn __job_append_actions(existing, intents) {
  var out = existing ?? []
  for intent in intents ?? [] {
    let key = __job_text(intent.kind) + ":" + __job_text(intent.effect)
    var found = false
    for current in out {
      let current_key = __job_text(current.kind) + ":" + __job_text(current.effect)
      if current_key == key {
        found = true
      }
    }
    if !found {
      out = out.push(intent)
    }
  }
  return out
}

fn __job_card_from_event(event) {
  return filter_nil(
    {
      schema: DASHBOARD_JOB_CARD_SCHEMA,
      job_id: event.job_id,
      title: event.title,
      status: event.status,
      latest_event_id: event.id,
      updated_at: event.source_clock.timestamp,
      run_id: event.run_id,
      workflow_id: event.workflow_id,
      trigger_id: event.trigger_id,
      binding_id: event.binding_id,
      queue: event.queue,
      queue_depth: event.queue_depth,
      priority: event.priority,
      last_result: event.result,
      last_error: event.error,
      approval: event.approval,
      dlq: event.dlq,
      receipt_refs: event.receipt_refs,
      replay_refs: event.replay_refs,
      related_refs: event.related_refs,
      action_intents: event.action_intents,
    },
  )
}

fn __job_merge_card(card, event) {
  let status_neutral = event.kind == "receipt.available" || event.kind == "replay_fixture.available"
  return filter_nil(
    card
      .merge(
      {
        title: status_neutral ? card.title : event.title,
        status: status_neutral ? card.status : event.status,
        latest_event_id: event.id,
        updated_at: event.source_clock.timestamp,
        run_id: event.run_id ?? card.run_id,
        workflow_id: event.workflow_id ?? card.workflow_id,
        trigger_id: event.trigger_id ?? card.trigger_id,
        binding_id: event.binding_id ?? card.binding_id,
        queue: event.queue ?? card.queue,
        queue_depth: event.queue_depth ?? card.queue_depth,
        priority: event.priority ?? card.priority,
        last_result: event.result ?? card.last_result,
        last_error: event.error ?? card.last_error,
        approval: event.approval ?? card.approval,
        dlq: event.dlq ?? card.dlq,
        receipt_refs: __job_append_refs(card.receipt_refs, event.receipt_refs),
        replay_refs: __job_append_refs(card.replay_refs, event.replay_refs),
        related_refs: __job_append_refs(card.related_refs, event.related_refs),
        action_intents: status_neutral ? __job_append_actions(card.action_intents, event.action_intents) : event.action_intents,
      },
    ),
  )
}

/** Reduce an ordered dashboard event stream into static Jobs view cards. */
pub fn dashboard_jobs_snapshot(events: list, options = nil) {
  let opts = options ?? {}
  let unique = dashboard_job_dedupe_events(events)
  var cards = {}
  var order = []
  for event in unique {
    if cards[event.job_id] == nil {
      order = order.push(event.job_id)
      cards[event.job_id] = __job_card_from_event(event)
    } else {
      cards[event.job_id] = __job_merge_card(cards[event.job_id], event)
    }
  }
  var jobs = []
  for job_id in order {
    jobs = jobs.push(cards[job_id])
  }
  return {schema: "harn.dashboard_jobs_snapshot.v1", generated_at: opts.generated_at, jobs: jobs}
}

/**
 * Build a portable dashboard view from normalized events. Pass `{emit: true}`
 * to also append each event to the EventLog.
 */
pub fn dashboard_jobs_view(events: list, options = nil) {
  let opts = options ?? {}
  let unique = dashboard_job_dedupe_events(events)
  var receipts = []
  if opts.emit ?? false {
    for event in unique {
      receipts = receipts.push(dashboard_job_emit(event, {topic: opts.topic ?? DASHBOARD_JOB_EVENT_TOPIC}))
    }
  }
  let snapshot = dashboard_jobs_snapshot(unique, opts)
  return {
    schema: DASHBOARD_JOBS_VIEW_SCHEMA,
    generated_at: opts.generated_at,
    title: opts.title ?? "Jobs",
    events: unique,
    jobs: snapshot.jobs,
    receipts: receipts,
  }
}