ci(governance): pin governance-reusable to standards@main SHA

[hyperpolymath]

Completes the DependencyPinning item #31 had to defer.

Change

governance.yml — pin the reusable-workflow ref:
governance-reusable.yml@main → @78b29005efe954822c86c553b40523b9fdae78d4

The SHA is what @main currently resolves to, read from the passing governance run's referenced_workflows metadata — i.e. the current, fixed standards bundle (identical content to what's been passing as @main). This is not the broken e0caf115 commit #31 had to revert (that older version checked out standards at the caller's SHA → fatal: not our ref).

Why this is safe

• Pins to the exact commit @main resolves to right now, so the workflow content is byte-identical to the runs that have been passing → governance CI stays green, and this PR's own governance / * checks validate the pin.
• Clears OpenSSF Pinned-Dependencies / DependencyPinning.

Trade-off

Governance no longer auto-tracks standards@main; bump this SHA when the standards governance bundle updates (the inline # standards@main, pinned 2026-06-20 comment flags it for maintainers).

🤖 Generated with Claude Code

https://claude.ai/code/session_01Y2MWTAqX2x7goVJzjFB4j5

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Generated by Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 9 issues detected

Severity	Count
🔴 Critical	1
🟠 High	4
🟡 Medium	4

⚠️ Action Required: Critical security issues found!

View findings

[
  {
    "reason": "Issue in scorecard-enforcer.yml",
    "type": "scorecard_publish_with_run_step",
    "file": "scorecard-enforcer.yml",
    "action": "split_scorecard_publish_job",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Download-and-execute pattern (curl|wget pipe to shell) -- verify integrity before execution (3 occurrences, CWE-494)",
    "type": "shell_download_then_run",
    "file": "/home/runner/work/wokelangiser/wokelangiser/setup.sh",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "line": 24,
    "reason": "Secret found: Generic API key",
    "type": "secret_detected",
    "file": "/home/runner/work/wokelangiser/wokelangiser/.envrc",
    "action": "revoke_rotate_and_purge",
    "rule_module": "security_errors",
    "severity": "critical"
  },
  {
    "reason": "Nominal-only SAST in wokelangiser: 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/wokelangiser/wokelangiser",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Add CodeQL or equivalent SAST workflow.",
    "scorecard_check": "SAST"
  },
  {
    "reason": "1 workflow(s) with tag-pinned (not SHA-pinned) actions in wokelangiser",
    "type": "DependencyPinning",
    "file": "/home/runner/work/wokelangiser/wokelangiser",
    "action": "auto_fix",
    "rule_module": "scorecard",
    "severity": "medium",
    "remediation": "Pin GitHub Actions and Docker base images by SHA hash.",
    "scorecard_check": "Pinned-Dependencies"
  },
  {
    "reason": "Repository has 11 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/workflow_audit/scorecard_publish_with_run_step -- Hypatia workflow_audit: scorecard_publish_with_run_step -- 20 day(s) old [STALE]",
    "type": "CSA001",
    "file": "scorecard-enforcer.yml",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Code-scanning alert hypatia/workflow_audit/scorecard_publish_with_run_step (high) at scorecard-enforcer.yml is 20 days old (threshold: 7 days) -- overdue for remediation",
    "type": "CSA003",
    "file": "scorecard-enforcer.yml",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Source file missing SPDX-License-Identifier header",
    "type": "SD009",
    "file": "src/interface/ffi/src/main.zig",
    "action": "add_spdx_header",
    "rule_module": "structural_drift",
    "severity": "medium"
  }
]

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