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FeatherSpec 1.1.0 — Brownfield Deep Scan

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@GregorBiswanger GregorBiswanger released this 26 Aug 13:07
· 4 commits to main since this release
v1.1.0
6013c45

Added

  • /sdd-architecture-scan: deep, resumable, budget-cascaded analysis of an existing
    codebase producing an architecture fingerprint — brownfield onboarding for both Claude
    Code and GitHub Copilot.
  • sdd-scout explorer subagent for both tools (.claude/agents/sdd-scout.md,
    .github/agents/sdd-scout.agent.md).
  • Path-scoped rule for curated module maps (.claude/rules/architecture-map.md).
  • Scan-only locations: .architecture/ (curated module maps) and .sdd-scan/ (volatile
    working state, gitignored).
  • /sdd-setup asks new-vs-existing project and routes existing software into the deep scan.
  • The architecture snapshot header tracks the last deep scan alongside the last
    reconciliation.

Changed

  • /sdd-architecture-update recommends /sdd-architecture-scan instead of guessing when
    drift is too large or the area is unmapped.
  • Constitution eviction rules: gates, ask-first boundaries and non-negotiables may never be
    evicted from always-loaded context.
  • README: brownfield onboarding path documented up to enterprise scale.

Retroactive release — tagged 2026-08-26 to version the pre-release history. Original date: 2026-08-26.

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