fix(ci): adopt canonical hypatia-scan.yml

[hyperpolymath]

Estate sweep (verisimiser#102 cascade): replace drifted hypatia-scan.yml with the fixed canonical — corrects the env.HOME workdir / old scanner layout drift AND adds pull-requests:write + Comment-step continue-on-error so the advisory PR comment never hard-fails the Hypatia check (hypatia#213). Mechanical, verified green on verisimiser main.

Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

[github-actions]

🔍 Hypatia Security Scan

Findings: 15 issues detected

Severity	Count
🔴 Critical	1
🟠 High	5
🟡 Medium	9

⚠️ Action Required: Critical security issues found!

View findings

[
  {
    "reason": "Issue in scorecard.yml",
    "type": "missing_workflow",
    "file": "scorecard.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Issue in quality.yml",
    "type": "missing_workflow",
    "file": "quality.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Issue in mirror.yml",
    "type": "missing_workflow",
    "file": "mirror.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": "Issue in secret-scanner.yml",
    "type": "missing_workflow",
    "file": "secret-scanner.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Required file missing (condition: public_repo)",
    "type": "missing_requirement",
    "file": ".github/workflows/scorecard.yml",
    "action": "create",
    "rule_module": "cicd_rules",
    "severity": "high"
  },
  {
    "reason": "Nickel file missing SPDX-License-Identifier header (1 occurrences, CWE-1104)",
    "type": "ncl_missing_spdx",
    "file": "/home/runner/work/git-reticulator/git-reticulator/configs/config.ncl",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "medium"
  },
  {
    "reason": "No SAST tool (CodeQL/SonarCloud/Semgrep) detected in git-reticulator",
    "type": "StaticAnalysis",
    "file": "/home/runner/work/git-reticulator/git-reticulator",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Add CodeQL or equivalent SAST workflow.",
    "scorecard_check": "SAST"
  },
  {
    "reason": "Repository has 2 non-main remote branch(es). Policy: single main branch only.",
    "type": "GS007",
    "file": ".",
    "action": "delete_remote_branches",
    "rule_module": "git_state",
    "severity": "medium"
  },
  {
    "reason": "6a2ml file outside canonical location -- must be in .machine_readable/6a2/",
    "type": "SD004",
    "file": ".machine_readable/STATE.a2ml",
    "action": "move",
    "rule_module": "structural_drift",
    "severity": "critical"
  }
]

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