fix(slack): ignore mentions from other bots

[izadoesdev]

Mentions posted by another Slack bot could start a Databuddy agent run, even though ordinary DM and thread-message routes already ignored bot messages. Ignore app_mention events carrying bot_id or bot_profile before replying, resolving channel readiness, or dispatching the agent.

The regression tests use another bot's user ID and both documented bot markers. They cover an empty mention and a substantive question, assert that no replies or downstream calls occur, and failed against the previous handler. Existing human-mention tests remain green. Slack documents both fields on AppMentionEvent.

Validation:

• Full Slack suite: 60 passed, 0 failed.
• bun run lint passed, including 22 policy tests.
• bun run check-types passed: 33 tasks.
• Configured pre-push bun run test passed: 29 tasks (28 cached, Slack freshly run).

Based independently on staging. Adjacent open work: #819 also edits the listener file for queues and stopping, and #822 adds event deduplication; this PR only filters bot-origin mentions and does not depend on either. No migration, scopes, or user setup required.

AI-assisted implementation and tests with Codex.

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Summary by cubic

Fixes mentions from other Slack bots being able to start a Databuddy agent run. Now app_mention events that include bot_id or bot_profile are ignored before any reply, readiness check, or agent dispatch.

^{Written for commit dccfad3. Summary will update on new commits.}

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Project	Deployment	Actions	Updated
databuddy-status	Ready	Preview	Sep 17, 2026 10:07am UTC

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[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge with no actionable correctness, security, or repository-rule issues identified.

Summary

This PR prevents bot-authored Slack mentions from initiating agent work by returning early when an app_mention contains bot_id or bot_profile.

• Applies the filter before replies, readiness checks, queueing, or agent dispatch.
• Adds regression coverage for both bot identity markers and for empty and substantive mentions.

_{Reviews (1) · Last reviewed commit: "fix(slack): ignore mentions from other b..."}