## 1. Specs

- [x] 1.1 Add install-mode and schema-gate requirements.
- [x] 1.2 Validate OpenSpec changes.

## 2. Tests

- [x] 2.1 Add Helm rendering coverage for schema-gate initContainers and mode overlays.
- [x] 2.2 Add migration wait-for-head unit coverage.
- [x] 2.3 Add kind-based Helm smoke install coverage for bundled and external DB modes.

## 3. Implementation

- [x] 3.1 Add migration wait-for-head support and deployment schema gate.
- [x] 3.2 Publish mode-centric Helm values and docs.
- [x] 3.3 Add CI smoke installs for supported easy-setup modes.
