ci: pin a2ml/k9 validate-action to canonical SHAs

[hyperpolymath]

Re-pins a2ml-validate-action -> 59145c7d1039fa3059b3ecacdb50ee23d7505898 (off the broken exit-127 lineage) and k9-validate-action -> 2d96f43c538964b097d159ed3a56ba5b5ceca227 (un-drift; stale-only) in dogfood-gate.yml. Targeted pin replacement only; surrounding structure untouched.

Refs hyperpolymath/standards#85

Generated with Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 13 issues detected

Severity	Count
🔴 Critical	2
🟠 High	3
🟡 Medium	8

⚠️ 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": "Action actions/upload-artifact@v4 needs attention",
    "type": "unpinned_action",
    "file": "release.yml",
    "action": "pin_sha",
    "rule_module": "workflow_audit",
    "severity": "medium"
  },
  {
    "reason": "Action actions/download-artifact@v4 needs attention",
    "type": "unpinned_action",
    "file": "release.yml",
    "action": "pin_sha",
    "rule_module": "workflow_audit",
    "severity": "medium"
  },
  {
    "reason": "No permissions declaration -- add permissions: read-all",
    "type": "missing_permissions",
    "file": "dogfood-gate.yml",
    "action": "add_permissions",
    "rule_module": "workflow_audit",
    "severity": "medium"
  },
  {
    "reason": "TypeScript file detected -- banned language",
    "type": "banned_language_file",
    "file": "/home/runner/work/a2ml-deno/a2ml-deno/mod.ts",
    "action": "flag",
    "rule_module": "cicd_rules",
    "severity": "critical"
  },
  {
    "line": 24,
    "reason": "Secret found: Generic API key",
    "type": "secret_detected",
    "file": "/home/runner/work/a2ml-deno/a2ml-deno/.envrc",
    "action": "revoke_rotate_and_purge",
    "rule_module": "security_errors",
    "severity": "critical"
  },
  {
    "reason": "1 workflow(s) missing permissions declaration in a2ml-deno",
    "type": "TokenPermissions",
    "file": "/home/runner/work/a2ml-deno/a2ml-deno",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "high",
    "remediation": "Set top-level permissions: read-all, declare writes per job.",
    "scorecard_check": "Token-Permissions"
  },
  {
    "reason": "Nominal-only SAST in a2ml-deno: 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/a2ml-deno/a2ml-deno",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Add CodeQL or equivalent SAST workflow.",
    "scorecard_check": "SAST"
  }
]

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