feat(bot): Improve Slack-native AI Assistant behavior

[RSO]

Summary

• Add Slack Assistant API handlers that seed Kilo-specific suggested prompts when assistant threads start or context changes.
• Replace bot message reaction progress indicators with Slack typing/status behavior while bot and Cloud Agent work is in progress.
• Request the Slack assistant:write scope required for assistant prompt/status APIs.

Visual Changes

slack-typing.mp4

Reviewer Notes

• Slack app configuration must subscribe to assistant_thread_started and assistant_thread_context_changed events for the new handlers to fire.
• Existing Slack installs may need reauthorization to grant the added assistant:write scope.

[kilo-code-bot]

Code Review Summary

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Fix these issues in Kilo Cloud

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/web/src/app/api/internal/bot-session-callback/[botRequestId]/route.ts	549	Cosmetic typing update can throw before callback finalization, leaving bot requests pending when Slack token lookup/status fails.

Resolved

File	Line	Issue
apps/web/src/lib/bot/assistant-prompts.ts	45	The helper/test mismatch from an earlier review remains resolved; the stale helper and test are deleted.

Other Observations (not in diff)

Issues found in unchanged code that cannot receive inline comments:

File	Line	Issue

Files Reviewed (1 file)

• apps/web/src/app/api/internal/bot-session-callback/[botRequestId]/route.ts - 0 new issues; 1 carried forward

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_{Reviewed by gpt-5.5-20260423 · 468,629 tokens}