Filter non-transaction webhooks to prevent invalid API calls

[Copilot]

Budget update webhooks were causing "Page not found" errors because the handler attempted to fetch them as transactions (e.g., budget ID 182 treated as transaction ID 182).

Changes

• Filter webhook triggers: Only process STORE_TRANSACTION, UPDATE_TRANSACTION, and DESTROY_TRANSACTION. Ignore and log all other trigger types.
• Remove build artifacts: Add build/ to .gitignore to prevent committing compiled output.

// Before: all webhooks processed as transactions
const body: WebhookTransactionBody = req.body
const queue = await getQueue()
for (const { id } of queues) {
  queue.add(id, { job: id, transactionId: `${body.content.id}` })
}

// After: filter by trigger type
const transactionTriggers = [
  WebhookTrigger.STORE_TRANSACTION,
  WebhookTrigger.UPDATE_TRANSACTION,
  WebhookTrigger.DESTROY_TRANSACTION,
]

const isSupportedTrigger = transactionTriggers.some(trigger => trigger === body.trigger)
if (!isSupportedTrigger) {
  console.log(`Ignoring non-transaction webhook trigger: ${body.trigger}`)
  res.send("<script>window.close()</script>")
  return
}

Original prompt

When I update the value of a budget (id 182 for instance) in Firefly, the webhook is called, and I'm getting this error :
2026-01-07T08:36:56.292499907Z =================================== Transaction webhook ===================================
2026-01-07T08:36:56.294130734Z Creating a new message for unbudgeted transaction with key 182
2026-01-07T08:36:56.386115571Z Job 17 failed with error Page not found
2026-01-07T08:36:56.387901399Z Creating a new message for uncategorized transaction with key 182
2026-01-07T08:36:56.423073579Z Job 18 failed with error Page not found

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