…API clients (#727)

## What

The consumer-adaptation follow-up that #726 disclosed: makes `apps/cli`,
`apps/dashboard`, and `apps/libs/sdk-typescript` compile against the
regenerated API clients by removing code whose server-side API was
deleted in the A2+MVP merge (#715). 52 files, +115/−3063 — almost
entirely deletions.

## cli

- Deletes the Dockerfile-build flow: `--dockerfile`/`-f` and
`--context`/`-c` flags on `boxlite create`, `CreateBuildInfo`
construction (`cmd/common/build.go` with its Dockerfile parsing + MinIO
context upload), build-log streaming (`cmd/common/logs.go`, hit the
removed `/build-logs` endpoint), the MCP `create_box` `buildInfo`
argument, and `pkg/minio` (its only consumer was the build flow; `go mod
tidy` drops the dependency).
- Drops `BOXSTATE_BUILD_FAILED` / `BOXSTATE_PENDING_BUILD` handling
(states removed from the enum).
- Regenerates cobra docs via `hack/generate-cli-docs.sh` — also clears
stale `boxlite snapshot` docs left from the super PR.

## dashboard

- Deletes the **Registries** page, `RegistryTable`, the 4 registry
hooks, its route enum + hidden-routes entry, and `apiClient.ts` wiring
(`DockerRegistryApi` was removed). The page was already in
`HIDDEN_DASHBOARD_ROUTES`.
- Removes the **usage-overview** wiring (`getOrganizationUsageOverview`
removed with no successor): the
`UsageOverview`/`UsageOverviewIndicator`/`LimitUsageChart` components,
the quota-driven usage timeline chart (its "percent of quota" mode is
built on the deleted `RegionUsageOverview` quotas throughout), the hook
+ query keys + `LiveIndicator` they orphaned. **Spending and Limits keep
their billing/tier features** (wallet, cost breakdown, tier comparison,
rate limits).
- Drops the orphaned `templates` box filter (the `snapshots` query param
left `listBoxesPaginated`; nothing set the filter).

## sdk-typescript

- `Box`: drops `template`/`backupState`/`backupCreatedAt`/`buildInfo` —
fields no longer on the wire model.
- `BoxLite.create()`: the wire `CreateBox` accepts neither `buildInfo`
nor `templateId` anymore, so `create()` now **throws a clear
`BoxliteError`** when `image` or `templateId` params are provided
instead of silently dropping them. The `CreateBoxFromImageParams` type,
overload, and `Image` class stay exported (marked `@deprecated`) because
the dashboard Playground imports them — its image flow now gets an
honest runtime error (it was already broken server-side); the full
Playground rework belongs to the MVP track (`PlaygroundProvider.tsx`
already carries `TODO(image-rewrite)` markers).
- Deletes the dead `processStreamingResponse` helper (`stdDemuxStream`
stays — `Process.ts` uses it).
- **Adds guard tests** (`__tests__/BoxLite.create-guards.test.ts`) for
the two new throws, wiring the dormant jest harness to
`tsconfig.spec.json` + the workspace path aliases so it actually runs
(`yarn jest --config libs/sdk-typescript/jest.config.js`, 2/2 pass). The
asserted messages are produced only by the guards — without them the
call rejects with a network `AxiosError`.

## Verification

- `go build ./...` + `gofmt` clean in `apps/cli`; `go mod tidy` applied.
- sdk `tsconfig.lib` **and** `tsconfig.spec` typecheck clean; jest guard
tests 2/2.
- dashboard `tsc`: **216 errors vs the 232-error pre-merge baseline,
zero new** (position-normalized diff; the dashboard has never been
tsc-clean — #719 tracks that).
- `make lint:fix` exits 0 modifying nothing.
- Grep sweeps: zero remaining references to any removed client symbol
outside the generated dirs.

## Out of scope (pre-existing)

`apps/runner` fails to compile on main (`boxlite.WithPort` undefined in
`pkg/boxlite`) — fails identically at clean HEAD, unrelated to the
regen.