Bryan Helmkamp 4aa5aae691 Fix duplicate .env vars on re-setup, capture GitHub App slug ... Replace append-based .env writing with mergeEnv() that upserts keys, preventing duplicates when setup runs multiple times. Capture the GitHub App slug from the manifest API response and persist it in TOML config so we can construct installation URLs. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>		2026-03-06 19:28:00 -05:00
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arc-web	Fix duplicate .env vars on re-setup, capture GitHub App slug	2026-03-06 19:28:00 -05:00