ci(lean): add Lean proof gate (lake build) guarding the metatheory

[hyperpolymath]

There was no Lean CI anywhere in the estate, so the mechanized proofs (type safety, Sandbox Isolation Thm 1, Capability Soundness Thm 2, Ethical Verdict Consistency, BFT quorum-intersection Thm 3) were unguarded against regression. This gate runs lake build on every push/PR via leanprover/lean-action (SHA-pinned v1.5.0), building academic/formal-verification/lean4/ on core Lean (no Mathlib, no test/lint targets). A broken proof now fails CI.

https://claude.ai/code/session_01DQACj3RFmAPZaBPgR9SAaS

[github-actions]

🔍 Hypatia Security Scan

Findings: 6 issues detected

Severity	Count
🔴 Critical	0
🟠 High	3
🟡 Medium	3

View findings

[
  {
    "reason": "binary_to_term without :safe option -- deserialization attack (1 occurrences, CWE-502)",
    "type": "elixir_send_unsanitised",
    "file": "/home/runner/work/phronesis/phronesis/lib/phronesis/compiler.ex",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "Nominal-only SAST in phronesis: codeql.yml language matrix contains no language present in the repo and lacks `actions`, so CodeQL records zero results on every commit. Remediation: set the CodeQL matrix to `language: actions`.",
    "type": "StaticAnalysis",
    "file": "/home/runner/work/phronesis/phronesis",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Add CodeQL or equivalent SAST workflow.",
    "scorecard_check": "SAST"
  },
  {
    "reason": "Repository has 4 non-main remote branch(es). Policy: single main branch only.",
    "type": "GS007",
    "file": ".",
    "action": "delete_remote_branches",
    "rule_module": "git_state",
    "severity": "medium"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/scorecard/StaticAnalysis -- Hypatia scorecard: StaticAnalysis -- 2 day(s) old",
    "type": "CSA001",
    "file": "phronesis",
    "action": "review",
    "rule_module": "code_scanning_alerts",
    "severity": "medium"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/code_safety/elixir_send_unsanitised -- Hypatia code_safety: elixir_send_unsanitised -- 10 day(s) old [STALE]",
    "type": "CSA001",
    "file": "lib/phronesis/compiler.ex",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Code-scanning alert hypatia/code_safety/elixir_send_unsanitised (high) at lib/phronesis/compiler.ex is 10 days old (threshold: 7 days) -- overdue for remediation",
    "type": "CSA003",
    "file": "lib/phronesis/compiler.ex",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  }
]

Powered by Hypatia Neurosymbolic CI/CD Intelligence

[github-actions]

🔍 Hypatia Security Scan

Findings: 6 issues detected

Severity	Count
🔴 Critical	0
🟠 High	3
🟡 Medium	3

View findings

[
  {
    "reason": "binary_to_term without :safe option -- deserialization attack (1 occurrences, CWE-502)",
    "type": "elixir_send_unsanitised",
    "file": "/home/runner/work/phronesis/phronesis/lib/phronesis/compiler.ex",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "Nominal-only SAST in phronesis: codeql.yml language matrix contains no language present in the repo and lacks `actions`, so CodeQL records zero results on every commit. Remediation: set the CodeQL matrix to `language: actions`.",
    "type": "StaticAnalysis",
    "file": "/home/runner/work/phronesis/phronesis",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Add CodeQL or equivalent SAST workflow.",
    "scorecard_check": "SAST"
  },
  {
    "reason": "Repository has 3 non-main remote branch(es). Policy: single main branch only.",
    "type": "GS007",
    "file": ".",
    "action": "delete_remote_branches",
    "rule_module": "git_state",
    "severity": "medium"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/scorecard/StaticAnalysis -- Hypatia scorecard: StaticAnalysis -- 2 day(s) old",
    "type": "CSA001",
    "file": "phronesis",
    "action": "review",
    "rule_module": "code_scanning_alerts",
    "severity": "medium"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/code_safety/elixir_send_unsanitised -- Hypatia code_safety: elixir_send_unsanitised -- 10 day(s) old [STALE]",
    "type": "CSA001",
    "file": "lib/phronesis/compiler.ex",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Code-scanning alert hypatia/code_safety/elixir_send_unsanitised (high) at lib/phronesis/compiler.ex is 10 days old (threshold: 7 days) -- overdue for remediation",
    "type": "CSA003",
    "file": "lib/phronesis/compiler.ex",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  }
]

Powered by Hypatia Neurosymbolic CI/CD Intelligence