Module types 

Slack Socket Mode + Web API wire types.

Block Kit is represented as raw serde_json::Value rather than a typed enum tree (spec §4.4, §7, §11.2) — Slack’s block/element/object surface is large and evolving; a raw escape hatch is the deliberate v1 choice.

Structs

AckFrame

Sent back on the same socket a events_api/slash_commands envelope arrived on, within 3 seconds of receipt (spec §2.2 — hard correctness requirement).

DisconnectFrame

EventsApiEnvelope

EventsApiPayload

HelloFrame

OpenConnectionResponse

PostMessageBody

PostMessageResponse

SlackEvent

SlashCommandsEnvelope

Present for wire-compatibility only — not routed/acted on (see module doc).

Enums

SocketEnvelope

Tagged on the wire "type" field. SlashCommands is parsed for forward compatibility (an envelope of this kind can arrive if the app has any slash command registered) but its payload is not modeled/acted on — slash command handling is explicitly out of scope for this PR (spec §2.5, §10 Phase 4).