نسخهٔ وب مستقل — پلتفرم نیروی کار هوش مصنوعی

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services/billing-worker/README.md

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+# `@agy/billing-worker`
+
+Rolls the **usage ledger** into draft invoices — one invoice per organization
+per billing period.
+
+```bash
+pnpm --filter @agy/billing-worker run     # one pass, then exit (cron shape)
+pnpm --filter @agy/billing-worker dev     # long-running loop
+```
+
+## What it does
+
+For every organization, for the requested period:
+
+1. Skip the organization if the period already has an invoice (**idempotent** —
+   a cron job that fires twice must not bill twice).
+2. Otherwise sum the usage ledger for the period.
+3. Skip if the total is zero — no `$0` drafts littering the table.
+4. Otherwise create a `draft` invoice carrying the ledger's total.
+
+## What it deliberately does **not** do
+
+- **It never invents an amount.** The ledger is the source of truth; the worker
+  only snapshots it. See `docs/architecture/overview.md` §8.
+- **It never moves money.** Charging a card is `BillingService.settle_payment`,
+  behind an authenticated API call — not a background job.
+
+## Implementation
+
+`apps/api/app/workers/billing.py`. The service wiring comes from
+`apps/api/app/application/container.py`, so this worker and the API compose
+services identically. Tests: `apps/api/tests/test_workers.py`.
+
+## Extracting this into its own process
+
+The worker already opens its own database sessions and holds no request state,
+so extraction is a deployment change, not a code change: run
+`python -m app.workers billing --loop` as its own process with the same
+`DATABASE_URL`, and point the cron/loop interval at your billing cycle.

services/billing-worker/package.json

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+{
+  "name": "@agy/billing-worker",
+  "version": "0.1.0",
+  "private": true,
+  "description": "Billing worker — rolls the usage ledger into draft invoices, once per period.",
+  "scripts": {
+    "once": "cd ../../apps/api && .venv/bin/python -m app.workers billing",
+    "dev": "cd ../../apps/api && .venv/bin/python -m app.workers billing --loop",
+    "lint": "cd ../../apps/api && .venv/bin/python -m ruff check app/workers"
+  }
+}