state: shift next_action to preservation_l2 — slice 3 closed

[hyperpolymath]

Summary

Updates .machine_readable/6a2/STATE.a2ml to reflect Phase D slice 3 closure (PR #209 merged) and point the next concrete code work at preservation_l2 over the now-thickened has_type_l2.

Changes

• @state.last_action — documents session 6: T_App_L2_Eff implementation (PR feat(L2): T_App_L2_Eff — Phase D slice 3 option 5a code lands #209), commit hash, full rule shape, the two forced refactors (project_l2_to_l1 option-return + weaken_modality structural induction), verification evidence (coqc 8.18.0 clean + Print Assumptions → "Closed under the global context" across all three exposed theorems).

• @state.next_action — shifts to preservation_l2. Spells out the two-case induction:

  • L2_lift_l1 case: carries forward preservation_l1's legacy TFun body-R-rigidity admit (slice 4b inherited debt — honest, not concealed).
  • T_App_L2_Eff case (slice 4a, the new constructor): handles EApp step-cases. S_App_Step1 / S_App_Step2 reduce via IHs; β-reduction inverts e1 to obtain a T_Lam_L1_*_Eff lambda whose body lives at L1 via the side-condition guarantee forall r, In r R -> In r R_in.
  • Anti-pattern refusal list per CLAUDE.md owner directive.

• @blockers TypingL1.v entry — adds T_Lam_L1_*_Eff (slice 2) + T_App_L1 (TFun-only) notes so a fresh agent understands why TFunEff lambdas are inert at L1.

• @blockers TypingL2.v entry — new. Documents the post-feat(L2): T_App_L2_Eff — Phase D slice 3 option 5a code lands #209 shape: two constructors, partial projection, induction-based weaken_modality, all Qed, zero axioms.

• @artifacts TypingL2.v line — thin wrapper → L2_lift_l1 + T_App_L2_Eff (Phase D slice 3).

Verification

No .v change, no proof change. Single machine-readable file diff.

Test plan

• CI green on merge

🤖 Generated with Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 69 issues detected

Severity	Count
🔴 Critical	11
🟠 High	11
🟡 Medium	47

⚠️ Action Required: Critical security issues found!

View findings

[
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    "action": "flag",
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    "type": "unknown",
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    "action": "flag",
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  {
    "reason": "Issue in rust-ci.yml",
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    "action": "flag",
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  {
    "reason": "Issue in rust-ci.yml",
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    "action": "flag",
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]

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