[WilliamBergamin]

This pull request adds the user_connection and user_connection_status_requested event models, so Bolt apps can register app.event(UserConnectionEvent.class, ...) and app.event(UserConnectionStatusRequestedEvent.class, ...).

• UserConnectionEvent in slack-api-model, plus its handler and payload in slack-app-backend. One class covers both the connect and disconnect subtypes: trigger_id is set on connect, and enterprise_id can be set on disconnect. The subtype stays unset by default so Bolt keys the listener on the type alone, like EmojiChangedEvent.
• UserConnectionStatusRequestedEvent in slack-api-model, plus its handler and payload in slack-app-backend, following EntityDetailsRequestedEvent.
• Matches feat(types): add the user_connection and user_connection_status_requested events node-slack-sdk#2783.

Testing

From an app with features.user_connections enabled and subscribed to both events:

app.event(UserConnectionEvent.class, (payload, ctx) -> {
    UserConnectionEvent event = payload.getEvent();
    if ("connect".equals(event.getSubtype())) {
        ctx.client().appsUserConnectionRequestAuth(r -> r.triggerId(event.getTriggerId()).primaryProvider(provider));
    }
    return ctx.ack();
});

app.event(UserConnectionStatusRequestedEvent.class, (payload, ctx) -> {
    ctx.client().appsUserConnectionUpdate(r -> r.userId(payload.getEvent().getUser()).status("disconnected"));
    return ctx.ack();
});

1. Click Connect on the app's profile and confirm the handler runs and the connection modal opens.
2. Open the app as a user without a recorded connection status and confirm the handler runs and the update succeeds.

Category (place an x in each of the [ ])

• bolt (Bolt for Java)
• bolt-{sub modules} (Bolt for Java - optional modules)
• slack-api-client (Slack API Clients)
• slack-api-model (Slack API Data Models)
• slack-api-*-kotlin-extension (Kotlin Extensions for Slack API Clients)
• slack-app-backend (The primitive layer of Bolt for Java)

Requirements

Please read the Contributing guidelines and Code of Conduct before creating this issue or pull request. By submitting, you agree to those rules.

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@383dd5f). Learn more about missing BASE report.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
..._backend/events/handler/UserConnectionHandler.java	0.00%	2 Missing ⚠️
.../handler/UserConnectionStatusRequestedHandler.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1660   +/-   ##
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  Branches        ?     1524           
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  Hits            ?    10679           
  Misses          ?     3049           
  Partials        ?      904           

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[zimeg]

☕ @WilliamBergamin LGTM! It's exciting for what this unlocks 🔏