arch: remove slack-broker from baudbot repo

[benvinegar]

Summary

• remove the in-repo slack-broker Cloudflare Worker code
• keep Baudbot focused on agent runtime + Slack bridge only
• update architecture/docs to reflect broker removal

The broker now lives in its own repo: https://github.com/modem-dev/baudbot-slack-broker

Validation

• npm test (122 passed)

[greptile-apps]

Greptile Summary

This PR removes the Cloudflare Worker-based Slack broker from the baudbot repository, moving it to a separate repository at https://github.com/modem-dev/baudbot-slack-broker. The change affects 23 files with 5,818 deletions, cleanly extracting the entire slack-broker/ directory including source code, tests, and configuration.

Key changes:

• Deleted the entire slack-broker/ directory containing the Cloudflare Worker implementation
• Updated AGENTS.md to remove slack-broker documentation section
• Updated docs/architecture.md to reflect the removal from the directory structure
• No remaining references to slack-broker found in the codebase
• PR validates that all 122 tests still pass

This is a straightforward architectural cleanup that better separates concerns by keeping baudbot focused on the agent runtime and Slack bridge (Socket Mode), while extracting the broker functionality to its own repository.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• This is a clean directory deletion with no remaining references in the codebase. All tests pass (122/122), documentation is properly updated, and the extraction is complete. The change is purely subtractive with no modifications to existing functionality.
• No files require special attention

Important Files Changed

Filename	Overview
AGENTS.md	Removed slack-broker section from documentation; correctly reflects architectural change
docs/architecture.md	Updated architecture diagram to remove slack-broker directory reference
slack-broker/README.md	Deleted - moved to separate repository
slack-broker/package.json	Deleted - moved to separate repository
slack-broker/src/index.ts	Deleted - Cloudflare Worker entry point moved to separate repository
slack-broker/wrangler.toml	Deleted - Cloudflare Workers configuration moved to separate repository

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    subgraph before[Before - Monorepo Structure]
        A1[baudbot repo] --> B1[agent runtime]
        A1 --> C1[slack-bridge Socket Mode]
        A1 --> D1[slack-broker Cloudflare Worker]
    end
    
    subgraph after[After - Separated Repos]
        A2[baudbot repo] --> B2[agent runtime]
        A2 --> C2[slack-bridge Socket Mode]
        E2[baudbot-slack-broker repo] --> D2[Cloudflare Worker]
    end
    
    before -.extraction.-> after
    
    style D1 fill:#ffcccc
    style D2 fill:#ccffcc

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_{Last reviewed commit: da7176b}