# Phase 5: Portainer Integration

**Status:** ⬜ Not Started
**Parent plan:** [PLAN.md](./PLAN.md)
**Domain:** backend

## Objective
Implement Portainer integration to display container and stack status from Docker environments managed by Portainer.

## Tasks

- [ ] Task 1: Create `src/lib/server/integrations/portainer/schema.ts` — Zod schemas for auth config (`{ apiKey: string, endpointId: number }`) and endpoint responses.
- [ ] Task 2: Create `src/lib/server/integrations/portainer/client.ts` — HTTP client for Portainer API. Auth via `X-API-Key` header. Endpoints: `/api/endpoints/{id}/docker/containers/json`, `/api/stacks`, `/api/endpoints/{id}/docker/containers/{cid}/json`.
- [ ] Task 3: Create `src/lib/server/integrations/portainer/transform.ts` — Transform: containers → summary (running/stopped/error counts as stat-card), container list with state + CPU/memory, stacks → list with up/down status.
- [ ] Task 4: Create `src/lib/server/integrations/portainer/index.ts` — Integration implementation. Endpoints: `container-summary` (stat-card), `container-list` (list), `stack-status` (list). testConnection: fetch endpoints list.
- [ ] Task 5: Register Portainer integration in registry.

## Files to Modify/Create
- `src/lib/server/integrations/portainer/schema.ts` — new
- `src/lib/server/integrations/portainer/client.ts` — new
- `src/lib/server/integrations/portainer/transform.ts` — new
- `src/lib/server/integrations/portainer/index.ts` — new
- `src/lib/server/integrations/registry.ts` — modify: register Portainer

## Acceptance Criteria
- Container summary shows running/stopped/error counts
- Container list shows name, state, image, CPU/memory usage
- Stack status shows stack names with up/down indicators
- Test connection validates API key and endpoint ID
- Handles multiple Portainer endpoints

## Notes
- Portainer API uses API key in `X-API-Key` header
- Container stats (CPU/memory) require a separate API call per container — limit to top N for performance
- Stack status comes from a separate endpoint
- endpointId is required — Portainer manages multiple Docker hosts

## Review Checklist
- [ ] All tasks completed
- [ ] Performance: limited container stats calls
- [ ] Code follows project conventions

## Handoff to Next Phase
<!-- Filled in after completion -->