ControlSurfaceServer.cs was 1061 lines / 47KB — a single class hosting
the HttpListener loop, the route dispatch, and every endpoint body in
between. Splits the class via partial-class into a thin host file plus
one partial per route group, all under Services/ControlSurface/.
* Services/ControlSurfaceServer.cs (was 1061L → now 400L) — kept here:
Start / Stop / DisposeAsync (the listener lifecycle), AcceptLoopAsync,
HandleRequestAsync (the route table itself, with its CORS preflight +
WebSocket upgrade + JSON dispatch), the response helpers
(ReadBodyAsync / WriteJsonAsync / TryGetBool / TryGetString), the
NotFound switch-arm, and the JsonSerializerOptions singleton.
* Services/ControlSurface/Endpoints/HomeEndpoints.cs — GetServerInfo,
TryRead helper.
* Services/ControlSurface/Endpoints/ParticipantsEndpoints.cs (the
biggest split) — GetParticipants, SetIsoOverrideByIdAsync,
ClearIsoOverrideByIdAsync, TryParseEnum, ToggleIsoByIdAsync,
ToggleIsoByNameAsync, ToggleByIdAsync. Together: every /participants/*
handler.
* Services/ControlSurface/Endpoints/PresetsEndpoints.cs — RefreshDiscovery,
StopAllAsync, ApplyPresetAsync.
* Services/ControlSurface/Endpoints/TeamsEndpoints.cs — InvokeTeams
(the helper that maps a TeamsControlBridge result to the JSON body).
* Services/ControlSurface/Endpoints/TopologyEndpoints.cs — GetTopology,
ApplyTopologyAsync, RestoreTopologyAsync.
* Services/ControlSurface/Endpoints/NotesEndpoints.cs — AppendNote.
* Services/ControlSurface/Endpoints/ThumbnailEndpoint.cs —
TryEncodeThumbnailJpeg (which is actually the BMP path now) +
EncodeBmpDownscaled + the LE byte writers. The legacy
TryEncodeThumbnailJpeg_WpfDeadCode helper that was dead-coded "for
posterity" is gone — no call sites; we removed-comments-on-removed-
code is the anti-pattern we wanted to fix.
* Services/ControlSurface/WebSocketHub.cs — HandleWebSocketAsync,
PushSnapshotIfChangedAsync, SendAsync, GetSnapshotJsonAsync. The
push-timer wiring stays in the host's Start() so the lifetime is
obvious where the connection is opened.
No behavior change. The route table in HandleRequestAsync still
dispatches by (HttpMethod, path) — only the handler bodies moved.
Build clean; 56 + 104 tests still pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
