chore(license): migrate to MPL-2.0

[hyperpolymath]

Summary

Migrates this repo's license declaration from PMPL-1.0-or-later to MPL-2.0.

Rationale: solo.

Changes

• LICENSE file replaced with canonical MPL-2.0 text (including SPDX header).
• Package metadata updated where present (Cargo.toml, package.json, deno.json, mix.exs, pyproject.toml).

Part of estate-wide metadata cleanup 2026-05-26.

[github-actions]

🔍 Hypatia Security Scan

Findings: 30 issues detected

Severity	Count
🔴 Critical	1
🟠 High	11
🟡 Medium	18

⚠️ Action Required: Critical security issues found!

View findings

[
  {
    "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": "codeql.yml lists `language: javascript-typescript` but the repo has no source files in any CodeQL-scannable language. The analyze job will exit 'no source files' on every run. Switch the matrix to `actions` (which scans workflow files — every repo has those).",
    "type": "codeql_language_matrix_mismatch",
    "file": "codeql.yml",
    "action": "switch_codeql_matrix_to_actions",
    "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/vscode-k9/vscode-k9/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/vscode-k9/vscode-k9/.envrc",
    "action": "revoke_rotate_and_purge",
    "rule_module": "security_errors",
    "severity": "critical"
  },
  {
    "reason": "Nominal-only SAST in vscode-k9: 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/vscode-k9/vscode-k9",
    "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 vscode-k9",
    "type": "DependencyPinning",
    "file": "/home/runner/work/vscode-k9/vscode-k9",
    "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 6 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/structural_drift/SD009 -- Hypatia structural_drift: SD009 -- 8 day(s) old",
    "type": "CSA001",
    "file": "src/interface/ffi/src/main.zig",
    "action": "review",
    "rule_module": "code_scanning_alerts",
    "severity": "medium"
  }
]

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