feat: add Helm chart for Kubernetes deployment — thanks @another-novelty

* feat: Add basic helm chart

* Delete chart/my-values.yaml

chart/README.md

@@ -0,0 +1,33 @@
+# TREK Helm Chart
+
+This is a minimal Helm chart for deploying the TREK app.
+
+## Features
+- Deploys the TREK container
+- Exposes port 3000 via Service
+- Optional persistent storage for `/app/data` and `/app/uploads`
+- Configurable environment variables and secrets
+- Optional generic Ingress support
+- Health checks on `/api/health`
+
+## Usage
+
+```sh
+helm install trek ./chart \
+  --set secretEnv.JWT_SECRET=your_jwt_secret \
+  --set ingress.enabled=true \
+  --set ingress.hosts[0].host=yourdomain.com
+```
+
+See `values.yaml` for more options.
+
+## Files
+- `Chart.yaml` — chart metadata
+- `values.yaml` — configuration values
+- `templates/` — Kubernetes manifests
+
+## Notes
+- Ingress is off by default. Enable and configure hosts for your domain.
+- PVCs require a default StorageClass or specify one as needed.
+- JWT_SECRET must be set for production use.
+- If using ingress, you must manually keep `env.ALLOWED_ORIGINS` and `ingress.hosts` in sync to ensure CORS works correctly. The chart does not sync these automatically.