Revised per PR #480 (#5607 owner clarification + #5608 codex resolution; #5612 directs the update): - The audit row no longer implies upstream observation or agent-only authorship. Reworded the guarantee: the row cryptographically binds commit bytes (control-plane-RECOMPUTED SHA) to access to the activation signing key, and binds that key to control-plane-owned activation metadata. An agent can sign arbitrary contents but cannot verify as a different activation or choose the recorded metadata. - Control plane accepts gateway-delivered opaque bytes, independently recomputes the Git object ID, verifies the embedded signature against the activation key, and stamps its own metadata. Trusts no gateway SHA/key/verdict/metadata. No upstream fetch. - Purged overclaims: removed "a compromised gateway cannot fabricate an audit binding" (the sidecar holds the signing capability, so it can — and that's acceptable under the intended guarantee), plus "accepted push" / "introduced upstream" framing. - Resolved the control-plane-transport open question in-PRD (was left open; codex asked to resolve): transport is gateway bytes + recompute + verify; mirror-read is no stronger. Issue: #423 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Product requirement docs
One PRD per feature: what to build, why, and how it's scoped. The PRD
is the durable spec — it should stand on its own without a Gitea issue
thread (see ../README.md for when a PRD is the right
document vs. a research note or a decision record).
Naming and numbering
New PRDs use a prd-new-<kebab-title>.md placeholder name while the PR
is open. On merge to main a CI workflow assigns the next sequential
number (0024-…, 0025-…), renames the file, and updates the title
header. Numbers are never reused; gaps are fine.
Once numbered, the filename stays fixed for the life of the doc.
Status
The Status: line near the top tracks the PRD's lifecycle:
- Draft — proposed, not yet shipped.
- Active — the design has shipped to
mainand is in effect. - Superseded by PRD NNNN — replaced by a later PRD; kept for history.
- Retargeted by PRD NNNN — folded into a later PRD's scope.
Format
# PRD prd-new: <short title> ← placeholder; CI fills in the number on merge
- **Status:** Draft
- **Author:** <who>
- **Created:** YYYY-MM-DD
- **Issue:** #<n> # optional — convenience pointer only
## Summary
One paragraph: what this builds and the pain it solves.
## Problem
The current state and why it's inadequate.
## Goals / Success Criteria
Bullets a reviewer can check the finished work against.
## Non-goals
What this explicitly does not do — and won't, to head off scope creep.
## Scope
In scope / out of scope, when the boundary needs spelling out.
## Design
How it works: schema, data flow, diagrams, algorithms as needed.
## Implementation chunks
Ordered, mergeable steps (optional; for multi-PR features).
## Open questions
Unresolved decisions — resolve or fold into Design before shipping.
Sections are a guide, not a straitjacket: drop the ones a given PRD doesn't need (a small change rarely needs Scope or Implementation chunks) and add others where they help (e.g. Testing strategy, Alternatives considered, References). Keep the rationale self-contained — inline the reasoning rather than linking out to an issue thread, so the PRD survives a move off Gitea.