## Context
New service `payslip-ingest` (code lives in `/home/wizard/code/payslip-ingest/`)
needs in-cluster deployment, its own Postgres DB + rotating user, a Grafana
datasource, a dashboard, and a Claude agent definition for PDF extraction.
Cluster-internal only — webhook fires from Paperless-ngx in a sibling namespace.
No ingress, no TLS cert, no DNS record.
## What
### New stack `stacks/payslip-ingest/`
- `kubernetes_namespace` payslip-ingest, tier=aux.
- ExternalSecret (vault-kv) projects PAPERLESS_API_TOKEN, CLAUDE_AGENT_BEARER_TOKEN,
WEBHOOK_BEARER_TOKEN into `payslip-ingest-secrets`.
- ExternalSecret (vault-database) reads rotating password from
`static-creds/pg-payslip-ingest` and templates `DATABASE_URL` into
`payslip-ingest-db-creds` with `reloader.stakater.com/match=true`.
- Deployment: single replica, Recreate strategy (matches single-worker queue
design), `wait-for postgresql.dbaas:5432` annotation, init container runs
`alembic upgrade head`, main container serves FastAPI on 8080, Kyverno
dns_config lifecycle ignore.
- ClusterIP Service :8080.
- Grafana datasource ConfigMap in `monitoring` ns (label `grafana_datasource=1`,
uid `payslips-pg`) reading password from the db-creds K8s Secret.
### Grafana dashboard `uk-payslip.json` (4 panels)
- Monthly gross/net/tax/NI (timeseries, currencyGBP).
- YTD tax-band progression with threshold lines at £12,570 / £50,270 / £125,140.
- Deductions breakdown (stacked bars).
- Effective rate + take-home % (timeseries, percent).
### Vault DB role `pg-payslip-ingest`
- Added to `allowed_roles` in `vault_database_secret_backend_connection.postgresql`.
- New `vault_database_secret_backend_static_role.pg_payslip_ingest`
(username `payslip_ingest`, 7d rotation).
### DBaaS — DB + role creation
- New `null_resource.pg_payslip_ingest_db` mirrors `pg_terraform_state_db`:
idempotent CREATE ROLE + CREATE DATABASE + GRANT ALL via `kubectl exec` into
`pg-cluster-1`.
### Claude agent `.claude/agents/payslip-extractor.md`
- Haiku-backed agent invoked by `claude-agent-service`.
- Decodes base64 PDF from prompt, tries pdftotext → pypdf fallback, emits a single
JSON object matching the schema to stdout. No network, no file writes outside /tmp,
no markdown fences.
## Trade-offs / decisions
- Own DB per service (convention), NOT a schema in a shared `app` DB as the plan
initially described. The Alembic migration still creates a `payslip_ingest`
schema inside the `payslip_ingest` DB for table organisation.
- Paperless URL uses port 80 (the Service port), not 8000 (the pod target port).
- Grafana datasource uses the primary RW user — separate `_ro` role is aspirational
and not yet a pattern in this repo.
- No ingress — webhook is cluster-internal; external exposure is unnecessary attack
surface.
- No Uptime Kuma monitor yet: the internal-monitor list is a static block in
`stacks/uptime-kuma/`; will add in a follow-up tied to code-z29 (internal monitor
auto-creator).
## Test Plan
### Automated
```
terraform init -backend=false && terraform validate
Success! The configuration is valid.
terraform fmt -check -recursive
(exit 0)
python3 -c "import json; json.load(open('uk-payslip.json'))"
(exit 0)
```
### Manual Verification (post-merge)
Prerequisites:
1. Seed Vault: `vault kv put secret/payslip-ingest webhook_bearer_token=$(openssl rand -hex 32)`.
2. Seed Vault: `vault kv patch secret/paperless-ngx api_token=<paperless token>`.
Apply:
3. `scripts/tg apply vault` → creates pg-payslip-ingest static role.
4. `scripts/tg apply dbaas` → creates payslip_ingest DB + role.
5. `cd stacks/payslip-ingest && ../../scripts/tg apply -target=kubernetes_manifest.db_external_secret`
(first-apply ESO bootstrap).
6. `scripts/tg apply payslip-ingest` (full).
7. `kubectl -n payslip-ingest get pods` → Running 1/1.
8. `kubectl -n payslip-ingest port-forward svc/payslip-ingest 8080:8080 && curl localhost:8080/healthz` → 200.
End-to-end:
9. Configure Paperless workflow (README in code repo has steps).
10. Upload sample payslip tagged `payslip` → row in `payslip_ingest.payslip` within 60s.
11. Grafana → Dashboards → UK Payslip → 4 panels render.
Closes: code-do7
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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