feat: add read-only mode via BIRD_READ_ONLY env var #70
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When BIRD_READ_ONLY=1 (or 'true'), all write commands (tweet, reply, follow, unfollow, unbookmark) are blocked with a clear error message before execution. Read commands continue to work normally. This is useful when running bird for AI agents where you want to allow reading/searching but prevent accidental posts — as the README already recommends against tweeting. Implementation: - Export WRITE_COMMANDS set from program.ts - Check env var in preAction hook (zero overhead for read commands) - Add test for write/read command classification - Document in README under environment shortcuts Closes steipete#69
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Closes #69
Summary
When
BIRD_READ_ONLY=1, all write commands (tweet,reply,follow,unfollow,unbookmark) are blocked with a clear error before execution. Read commands work normally.Use case
Running bird for AI agents where you want to allow reading/searching but prevent accidental posts — exactly as the README already recommends.
Implementation
WRITE_COMMANDSset exported fromprogram.tspreActionhook — zero overhead for read commands1ortrue3 files, +41 lines. Build + tests pass.