feat: extend Flux image automation, Gatus, and docs for VIN Decoder

Closes leeworks-agents/api-company#133
Closes leeworks-agents/api-company#134
Closes leeworks-agents/api-company#135
Closes leeworks-agents/api-company#136

- flux/image-automation/imagerepositories.yaml: add vin-decoder ImageRepository
  pointing at registry.leeworks.dev/vin-decoder/api (#133)
- flux/image-automation/imagepolicies.yaml: add vin-decoder ImagePolicy
  with semver range >=0.1.0 (#133)
- flux/monitoring/gatus-helmrelease.yaml: add VIN Decoder API endpoint check
  targeting https://vin.leeworks.dev/v1/health with Slack alert (#134)
- docs/pre-launch-checklist.md: add vin-decoder to Infrastructure, DNS & TLS,
  Functional Verification, and Legal sections; update status page line to
  reference all four APIs (#135)
- docs/secrets-checklist.md: add items #11-13 for vin-decoder GITEA_TOKEN,
  gitea-registry, and rapidapi-proxy-secret; add detail sections for each (#136)

kustomize build flux/ passes with zero errors.

docs/pre-launch-checklist.md

@@ -11,6 +11,7 @@ Use this checklist as the final go-live gate — run through every item the day
   - [ ] `zip-enrichment` pod `READY=1/1` (`kubectl get pods -n zip-enrichment`)
   - [ ] `holidays` pod `READY=1/1` (`kubectl get pods -n holidays`)
   - [ ] `air-quality` pod `READY=1/1` (`kubectl get pods -n air-quality`)
+  - [ ] `vin-decoder` pod `READY=1/1` (`kubectl get pods -n vin-decoder`)
 - [ ] `docs-site` pod Running and READY (`kubectl get pods -n docs-site`)
 - [ ] Prometheus scraping all three API services (check Prometheus Targets UI)
 - [ ] Grafana dashboard accessible at `grafana.leeworks.dev`
@@ -25,8 +26,9 @@ Use this checklist as the final go-live gate — run through every item the day
 - [ ] `docs.leeworks.dev` → cluster ingress IP
 - [ ] `status.leeworks.dev` → cluster ingress IP
 - [ ] `registry.leeworks.dev` → cluster ingress IP
+- [ ] `vin.leeworks.dev` → cluster ingress IP (`dig vin.leeworks.dev +short` + `curl -I https://vin.leeworks.dev`)
 - [ ] `grafana.leeworks.dev` → cluster ingress IP
-- [ ] TLS certificates issued for all 7 subdomains (`kubectl get certificates -A`)
+- [ ] TLS certificates issued for all 8 subdomains (`kubectl get certificates -A`)
 
 ---
 
@@ -38,9 +40,12 @@ Use this checklist as the final go-live gate — run through every item the day
 - [ ] `GET /zip/{zip}` returns correct data for a sample ZIP code (e.g. `curl https://zip.leeworks.dev/zip/10001`)
 - [ ] `GET /holidays/{year}` returns correct data (e.g. `curl https://holidays.leeworks.dev/holidays/2026`)
 - [ ] `GET /aqi/{city}` returns correct data (e.g. `curl https://aqi.leeworks.dev/aqi/New%20York`)
+- [ ] `GET /v1/health` returns HTTP 200 on **vin-decoder** (`curl https://vin.leeworks.dev/v1/health`)
+- [ ] `GET /v1/decode?vin=1HGCM82633A004352` returns correct make/model/year data
+- [ ] Request **without** `X-RapidAPI-Proxy-Secret` returns HTTP 403 on **vin-decoder** (`curl https://vin.leeworks.dev/v1/decode?vin=1HGCM82633A004352`)
 - [ ] Request **without** `X-RapidAPI-Proxy-Secret` returns HTTP 403 on all three APIs
 - [ ] `docs.leeworks.dev/pricing` loads correctly
-- [ ] `status.leeworks.dev` shows all three APIs as **UP**
+- [ ] `status.leeworks.dev` shows all **four** APIs as **UP**
 
 ---
 
@@ -50,6 +55,8 @@ Use this checklist as the final go-live gate — run through every item the day
 - [ ] `docs/legal/privacy-policy.md` committed and reachable at `docs.leeworks.dev/legal/privacy-policy`
 - [ ] `docs/legal/acceptable-use-policy.md` committed and reachable at `docs.leeworks.dev/legal/acceptable-use-policy`
 - [ ] All three APIs listed on RapidAPI with **Free + 3 paid tiers** (leeworks-agents/api-company#44)
+- [ ] VIN Decoder listed on RapidAPI with Free + 3 paid tiers (leeworks-agents/api-company#131)
+- [ ] `rapidapi-proxy-secret` updated with real RapidAPI value in `vin-decoder` namespace (leeworks-agents/api-company#128)
 - [ ] PayPal linked to RapidAPI (leeworks-agents/api-company#19)
 - [ ] `rapidapi-proxy-secret` updated with **real** RapidAPI values in all 3 namespaces (leeworks-agents/api-company#81)
 

docs/secrets-checklist.md

@@ -19,6 +19,9 @@ Follow this list top-to-bottom; each step unblocks the next.
 - [ ] 8. `gitea-registry` (zip-enrichment, holidays, air-quality, docs-site) — imagePullSecret for pods pulling from `registry.leeworks.dev`
 - [ ] 9. `gitea-image-automation-token` (flux-system) — write-scoped token for Flux ImageUpdateAutomation to push image-tag commits
 - [ ] 10. `rapidapi-proxy-secret` (zip-enrichment, holidays, air-quality) — RapidAPI Proxy Secret for server-side request validation
+- [ ] 11. `GITEA_TOKEN` Actions secret in `leeworks-agents/vin-decoder` repo — enables CI image push for VIN Decoder (leeworks-agents/api-company#126)
+- [ ] 12. `gitea-registry` imagePullSecret in `vin-decoder` namespace — enables pod image pulls from `registry.leeworks.dev` (leeworks-agents/api-company#127)
+- [ ] 13. `rapidapi-proxy-secret` in `vin-decoder` namespace — enables RapidAPI proxy-secret header validation (leeworks-agents/api-company#128)
 
 ---
 
@@ -194,6 +197,68 @@ done
 ```
 
 
+### 11. `GITEA_TOKEN` Actions secret in `leeworks-agents/vin-decoder`
+
+| Field    | Value |
+|----------|-------|
+| Name     | `GITEA_TOKEN` |
+| Scope    | Gitea Actions Secret — set in repo Settings |
+| Purpose  | CI workflow pushes container image to `registry.leeworks.dev/vin-decoder/api:<sha>` |
+| Source   | Gitea token with `write:packages` scope (reuse from item #5 if it has `write:packages`) |
+| Tracked  | leeworks-agents/api-company#126 |
+| Unblocks | CI image push for VIN Decoder |
+
+Path: **Gitea → leeworks-agents/vin-decoder → Settings → Secrets → `GITEA_TOKEN`**
+
+---
+
+### 12. `gitea-registry` imagePullSecret in `vin-decoder` namespace
+
+| Field     | Value |
+|-----------|-------|
+| Name      | `gitea-registry` |
+| Namespace | `vin-decoder` |
+| Type      | `kubernetes.io/dockerconfigjson` |
+| Purpose   | Allows VIN Decoder pods to pull images from `registry.leeworks.dev` without ImagePullBackOff |
+| Tracked   | leeworks-agents/api-company#127 |
+
+```bash
+kubectl create namespace vin-decoder --dry-run=client -o yaml | kubectl apply -f -
+kubectl create secret docker-registry gitea-registry \
+  --namespace=vin-decoder \
+  --docker-server=registry.leeworks.dev \
+  --docker-username=leeworks-agents \
+  --docker-password=<GITEA_TOKEN_WITH_READ_PACKAGES> \
+  --docker-email=agent@leeworks.dev
+```
+
+---
+
+### 13. `rapidapi-proxy-secret` in `vin-decoder` namespace
+
+| Field     | Value |
+|-----------|-------|
+| Name      | `rapidapi-proxy-secret` |
+| Namespace | `vin-decoder` |
+| Purpose   | VIN Decoder validates `X-RapidAPI-Proxy-Secret` header; returns HTTP 403 if missing/wrong |
+| Source    | RapidAPI dashboard → VIN Decoder listing → Settings → Security → Proxy Secret |
+| Tracked   | leeworks-agents/api-company#128 |
+
+```bash
+# Placeholder (unblocks deploy testing):
+kubectl create secret generic rapidapi-proxy-secret \
+  --namespace=vin-decoder \
+  --from-literal=X-RapidAPI-Proxy-Secret=PLACEHOLDER_REPLACE_AFTER_RAPIDAPI_LISTING
+
+# Update with real value after RapidAPI listing (#131) is live:
+kubectl create secret generic rapidapi-proxy-secret \
+  -n vin-decoder \
+  --from-literal=X-RapidAPI-Proxy-Secret=<VIN_RAPIDAPI_PROXY_SECRET> \
+  --save-config --dry-run=client -o yaml | kubectl apply -f -
+```
+
+---
+
 ## Dependency Order
 
 ```

flux/image-automation/imagepolicies.yaml

@@ -40,6 +40,18 @@ spec:
 ---
 apiVersion: image.toolkit.fluxcd.io/v1beta2
 kind: ImagePolicy
+metadata:
+  name: vin-decoder
+  namespace: flux-system
+spec:
+  imageRepositoryRef:
+    name: vin-decoder
+  policy:
+    semver:
+      range: ">=0.1.0"
+---
+apiVersion: image.toolkit.fluxcd.io/v1beta2
+kind: ImagePolicy
 metadata:
   name: docs-site
   namespace: flux-system

flux/image-automation/imagerepositories.yaml

@@ -35,6 +35,17 @@ spec:
 ---
 apiVersion: image.toolkit.fluxcd.io/v1beta2
 kind: ImageRepository
+metadata:
+  name: vin-decoder
+  namespace: flux-system
+spec:
+  image: registry.leeworks.dev/vin-decoder/api
+  interval: 5m
+  secretRef:
+    name: gitea-leeworks-agents-token
+---
+apiVersion: image.toolkit.fluxcd.io/v1beta2
+kind: ImageRepository
 metadata:
   name: docs-site
   namespace: flux-system

flux/monitoring/gatus-helmrelease.yaml

@@ -68,6 +68,15 @@ spec:
               description: "Air Quality API is down"
               send-on-resolved: true
 
+
+        - name: VIN Decoder API
+          url: https://vin.leeworks.dev/v1/health
+          interval: 1m
+          conditions:
+            - "[STATUS] == 200"
+            - "[RESPONSE_TIME] < 1000"
+          alerts:
+            - type: slack
         - name: Docs Site
           url: https://docs.leeworks.dev
           interval: 5m