## Summary
- Rebuilds the master's **Services** and **Agents** pages per the "Ledger" design: sidebar shell with live nav counts, machine filter and Live indicator; dark/light theme (follows the OS, toggle overrides); embedded Schibsted Grotesk and JetBrains Mono (fontsource 5.3.0, OFL).
- Services: Swarm grouped per cluster with its machines under it, offline banner ("Agent offline since HH:MM", browser-local), Simple Icons derived from the image ref (letter circle fallback), existing badges and mode switch restyled, client-side search, machine filter and Icon / Icon + text / Text toggle.
- Agents: Online / Offline / Never connected / Revoked, master version in the header with outdated agent versions marked, revoke via popover instead of `confirm()`, "Add agent" as a three-step panel that completes when the agent says hello (SSE `agents`).
- Store: migration `0005_agent_cluster.sql` persists each agent's `swarm_cluster_id` (needed to list a cluster's managers and its offline state after a master restart).
- SSE keepalive is now a named `ping` event so the Live indicator also shows the connection is alive. `revokeAgent` now publishes `agents`.
Closes#18
## Notes
- Workers never report a cluster id (Docker only sets `Swarm.Cluster` on managers), so their Swarm role shows "—". Fixing that needs a new hello field.
- Master binary grows by about 2.16 MB, almost all Simple Icons 16.35.0 path data (gzipped JSON, regenerated with `go generate ./internal/master/web/icons`). The agent binary does not import it.
- Jobs, Job and Service detail pages only get the new shell; their own artboards are out of scope, as are Update buttons, Update all, header stats and the drift badge.
- Unchanged: CSRF on every POST, `Cache-Control: no-store` on the token response, 401 + `HX-Redirect` without a session, no `template.HTML` on agent- or user-controlled values, no Node build step.
## Test plan
- [x] `go test ./...`, `go test -race ./internal/master/...`
- [x] `go test -tags integration ./internal/master/store/` against Postgres 17
- [x] `docker build`
- [x] Browser check on fake data: both themes, 1440 px and 390 px, add-agent flow through connect
- [ ] Services grouping and icons against real stacks and a real Swarm cluster
- [ ] "Agent offline since" after stopping an agent
- [ ] Theme toggle, search and machine filter across reloads and mode changes
- [ ] Add agent end to end with a real agent, Copy buttons
- [ ] Phone at 390 px
https://claude.ai/code/session_01GAZsp3P7Qto6JnhipxWUJQ
Reviewed-on: #29
## Summary
- Drift detection: `model.Service.Drifted()` compares desired and running version by digest (tag when the digest is unknown). `services.awaiting_inventory` hides drift between a job result and the next inventory write.
- Poll and webhook jobs are refused for a drifted service; `POST /services/{id}/restore` (manual job to `desired_ref`) and `POST /services/{id}/accept` (running version becomes desired, guarded by `actual` = `Service.RunningRef`).
- Move suggestions (`store.MoveCandidates`, Compose only) and `POST /services/{id}/merge`: the old row keeps its id, mode, `desired_ref` and history and takes the new location; the duplicate is deleted.
- Backend only. The buttons and badges come with #28, on top of the Ledger UI (#18).
Closes#10
## Test plan
- [x] `gofmt -l .`, `go vet ./...`, `go test ./...`
- [x] `go test -race ./internal/agent/... ./internal/master/... ./internal/e2e/`
- [x] `go test -tags integration ./internal/master/store/` against postgres:17-alpine
- [ ] On the server: migration 0005 applies; no drift shown after a normal update
- [ ] On the server: manual `docker compose up` with another tag gives drift; webhook for an auto service is refused
- [ ] On the server: restore and accept via POST; merge after moving a stack
Reviewed-on: #30
shcizo