* feat(nodes): add capability-based node compatibility negotiation
Each Sencho instance now exposes /api/meta with its version and supported
capabilities. When the user switches nodes, the frontend fetches this
metadata and disables features the remote node doesn't support via a
CapabilityGate overlay. Version is shown in the node switcher dropdown
and connection test results.
- Backend: CapabilityRegistry with static capability list and fetchRemoteMeta helper
- Backend: /api/meta (public) and /api/nodes/:id/meta (auth) endpoints
- Frontend: NodeContext enhanced with per-node meta caching (5min TTL)
- Frontend: CapabilityGate component with typed Capability union
- Frontend: 13 features wrapped with capability gates
- Docs: node-compatibility.mdx + OpenAPI spec updates
* fix(nodes): revert to require() for package.json version reading
The static import fails in the Docker multi-stage build because the
root package.json is not copied into the backend-builder stage. The
require() call resolves at runtime when the file is available.
Audit found 11 routes with no stackName validation and 2 using a weaker
manual check. All 13 now use the canonical isValidStackName() guard
(^[a-zA-Z0-9_-]+$), returning 400 with { error: 'Invalid stack name' }.
Add a complete OpenAPI 3.1 specification covering ~55 public API endpoints
across 8 categories (Stacks, Containers, API Tokens, Webhooks, Nodes, Fleet,
Scheduled Tasks, Health). Wire it into Mintlify via native OpenAPI rendering
with an interactive "Try It" playground and a dedicated API Reference tab.
Includes an API overview page documenting authentication, token scopes,
node routing, error format, license tier requirements, and WebSocket endpoints.
Anso