Allow each scheduled job to pin its provider and model.

New jobs snapshot the current New Session default so quota is predictable.
cron_create inherits the calling session model unless provider+model are set.
The editor lists configured models; the job row shows which model will run.

lib/store.js

@@ -53,6 +53,23 @@ export function newId() {
   return randomUUID()
 }
 
+export function normalizeJobModel(input = {}) {
+  const provider = typeof input.provider === 'string' ? input.provider.trim() : ''
+  const model = typeof input.model === 'string' ? input.model.trim() : ''
+  const reasoningEffort = typeof input.reasoningEffort === 'string'
+    ? input.reasoningEffort.trim()
+    : (typeof input.reasoning_effort === 'string' ? input.reasoning_effort.trim() : '')
+  if (!provider && !model) {
+    return { provider: '', model: '', reasoningEffort: '' }
+  }
+  if (!provider || !model) {
+    const error = new Error('provider and model must be set together')
+    error.code = 'INVALID_JOB'
+    throw error
+  }
+  return { provider, model, reasoningEffort }
+}
+
 /**
  * @param {object} input
  * @param {object} state
@@ -74,6 +91,7 @@ export function createJobRecord(input, state, now) {
   const settings = state.settings || DEFAULT_SETTINGS
   const schedule = validateSchedule(input.schedule, settings.timezone)
   const timeoutMinutes = Number(input.timeoutMinutes)
+  const model = normalizeJobModel(input)
   const job = {
     id: String(input.id || newId()),
     name,
@@ -83,6 +101,9 @@ export function createJobRecord(input, state, now) {
     timeoutMinutes: Number.isFinite(timeoutMinutes) && timeoutMinutes >= 1
       ? Math.min(240, Math.round(timeoutMinutes))
       : 10,
+    provider: model.provider,
+    model: model.model,
+    reasoningEffort: model.reasoningEffort,
     schedule: schedule.kind === 'cron'
       ? { kind: 'cron', expr: schedule.expr, timezone: schedule.timezone }
       : { kind: 'at', at: new Date(schedule.at).toISOString(), timezone: schedule.timezone },