docs(proof-status): correct stale preservation/progress claims

[hyperpolymath]

Summary

PROOF-NEEDS.md and ROADMAP.adoc both claimed formal/Semantics.v's preservation proof was still Admitted and progress was at "92%". Direct verification disagrees:

• preservation is closed at Qed (since 2026-04-27 — see in-file proof-status comment at formal/Semantics.v L3328: "FULLY CLOSED. Zero Admitted. ... preservation: Qed (S_Region_Step+T_Region_Active closed by in_dec on r ∈ R')").
• grep -c "Admitted\." formal/Semantics.v returns 1, but that match is inside the proof-status comment, not an actual Coq tactic — zero proof-level Admitted remain in this file.
• progress is not at 92%; the owner already flagged on standards#134 that it was deleted in the substitution-semantics rewrite (current = 0%, not formalised in this tree).

Folded in: ROADMAP's Idris2 status now records the 2026-05-19 addition of splitLinearCoverage (PR #85), which closed the proof-debt P0 the owner flagged on standards#134.

Test plan

• No .v / .idr files touched — build state unaffected.
• Verified preservation Qed via direct file read (L3207 Theorem preservation, L3327 Qed., L3328 status comment).
• Verified progress is absent in current formal/Semantics.v (no Theorem progress / Lemma progress matches).
• Diff is doc-only, 2 files: PROOF-NEEDS.md, ROADMAP.adoc.

Refs

Refs hyperpolymath/standards#134 — addresses the stale-docs item in the owner's 2026-05-XX reconciliation comment. Remaining OWED items (14 missing SPDX, CI version mismatch, %default partial modules, no idris2 CI gate, no SPARK seam) are out of scope for this sweep — most are owner-gated or out of the arm's title scope ("Rust/SPARK NON-COMPLIANT").

🤖 Generated with Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 29 issues detected

Severity	Count
🔴 Critical	7
🟠 High	6
🟡 Medium	16

⚠️ Action Required: Critical security issues found!

View findings

[
  {
    "reason": "Issue in quality.yml",
    "type": "missing_workflow",
    "file": "quality.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Issue in security-policy.yml",
    "type": "missing_workflow",
    "file": "security-policy.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "medium"
  },
  {
    "reason": "Action hyperpolymath/standards/.github/workflows/governance-reusable.yml@main needs attention",
    "type": "unpinned_action",
    "file": "governance.yml",
    "action": "pin_sha",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Admitted leaves proof hole (1 occurrences, CWE-704)",
    "type": "admitted",
    "file": "/home/runner/work/ephapax/ephapax/formal/Semantics.v",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "critical"
  },
  {
    "reason": "Coq admit tactic leaves goal unproven (2 occurrences, CWE-704)",
    "type": "coq_admit_tactic",
    "file": "/home/runner/work/ephapax/ephapax/formal/Semantics.v",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "critical"
  },
  {
    "reason": "believe_me undermines formal verification (1 occurrences, CWE-704)",
    "type": "believe_me",
    "file": "/home/runner/work/ephapax/ephapax/src/formal/Ephapax/Formal/RegionLinear.idr",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "critical"
  },
  {
    "reason": "assert_total bypasses totality checker (1 occurrences, CWE-704)",
    "type": "assert_total",
    "file": "/home/runner/work/ephapax/ephapax/src/formal/Ephapax/Formal/RegionLinear.idr",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "expect() in hot path (1 occurrences, CWE-754)",
    "type": "expect_in_hot_path",
    "file": "/home/runner/work/ephapax/ephapax/src/ephapax-repl/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "medium"
  },
  {
    "reason": "from_raw constructs types from raw pointers without safety checks (1 occurrences, CWE-676)",
    "type": "from_raw",
    "file": "/home/runner/work/ephapax/ephapax/src/ephapax-vram-cache/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (8 occurrences, CWE-754)",
    "type": "unwrap_without_check",
    "file": "/home/runner/work/ephapax/ephapax/src/ephapax-vram-cache/benches/cache_bench.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  }
]

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