free-memory(immune-system): branch protections + PR + checks ARE part of the immune system until Aurora (Aaron 2026-05-02)

[AceHack]

Summary

Aaron 2026-05-02 substrate-anchor: when LFG branch-protection rejected my direct push to main and I framed it as "exactly what it should do," Aaron anchored the framing into substrate: "it's part of your immune system now until we get aurora, those branch protections and the PR process and checks on that protect you."

Names the LFG host-layer enforcement (branch protection + PR process + required checks) as the operational instance of the Aurora immune-math standardization until Aurora itself ships.

This is not metaphor. Same architectural shape:

• Inputs come in (commits, PRs, branches)
• Multiple independent verifiers run (CI matrix, shellcheck, F# build, role-ref check, Codex Connector, human review)
• Failures get rejected at the boundary
• Verified inputs propagate (squash-merge to main)
• The system itself is hardened against tampering (non_fast_forward rule, no bypass actors)

Composes with

• Aurora immune-math standardization doc (one of CLAUDE.md's 4 guiding-principle docs)
• "The protocol bends to the security ruleset; the ruleset does not bend to the protocol" (canonical reviewer principle from B-0110)
• B-0162 mechanical-check pattern (sibling immune-system component)
• VISION.md scope-creep-is-feature (immune system load-bearing for unbounded-scope claim)
• Otto-238 retractability (forward-only correction = right asymmetry)

Carved sentence

Branch protections, the PR process, and required checks are not friction — they are the immune system. Until Aurora ships, the LFG host-enforcement layer carries that load. The rejection of a bad action is the substrate working, not the substrate failing. The cost of the protection holding (~3 commands to recover) is the cost of the protection holding.

Test plan

• Memory file under memory/ per natural-home-of-memories rule
• Composes-with section enumerated
• Failure-mode signature documented
• Carved sentence at end
• CI green

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds a new feedback memory documenting the framing that GitHub branch protections + PR process + required checks function as the project’s “immune system” until Aurora ships, anchoring this as operational substrate rather than metaphor.

Changes:

• Adds a new memory/feedback_*.md memo capturing the branch-protection rejection incident and the derived “immune system” framing.
• Records composition links to related backlog items and other guiding-principle documents.