chore(licence): normalise to MPL-2.0 + CC-BY-SA-4.0 (canonical pair)

[hyperpolymath]

Estate licence normalisation. LICENSES/={MPL-2.0,CC-BY-SA-4.0}; root LICENSE=verbatim MPL-2.0 (GitHub display); code->MPL-2.0, docs(.md/.adoc)->CC-BY-SA-4.0; vendored untouched. Residual mentions (mostly legitimate anti-AGPL rules): 11. Manual-review licence PR.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🔍 Hypatia Security Scan

Findings: 15 issues detected

Severity	Count
🔴 Critical	0
🟠 High	11
🟡 Medium	4

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": "Issue in instant-sync.yml",
    "type": "secret_action_without_presence_gate",
    "file": "instant-sync.yml",
    "action": "peter-evans/repository-dispatch",
    "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/live-files/live-files/setup.sh",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "Nominal-only SAST in live-files: 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/live-files/live-files",
    "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/workflow_audit/secret_action_without_presence_gate -- Hypatia workflow_audit: secret_action_without_presence_gate -- 24 day(s) old [STALE]",
    "type": "CSA001",
    "file": "instant-sync.yml",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/workflow_audit/scorecard_publish_with_run_step -- Hypatia workflow_audit: scorecard_publish_with_run_step -- 24 day(s) old [STALE]",
    "type": "CSA001",
    "file": "scorecard-enforcer.yml",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/code_safety/shell_download_then_run -- Hypatia code_safety: shell_download_then_run -- 33 day(s) old [STALE]",
    "type": "CSA001",
    "file": "setup.sh",
    "action": "escalate",
    "rule_module": "code_scanning_alerts",
    "severity": "high"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/git_state/GS007 -- Hypatia git_state: GS007 -- 38 day(s) old [STALE]",
    "type": "CSA001",
    "file": ".",
    "action": "update",
    "rule_module": "code_scanning_alerts",
    "severity": "medium"
  },
  {
    "reason": "Code scanning (Hypatia): hypatia/scorecard/StaticAnalysis -- Hypatia scorecard: StaticAnalysis -- 38 day(s) old [STALE]",
    "type": "CSA001",
    "file": "live-files",
    "action": "update",
    "rule_module": "code_scanning_alerts",
    "severity": "medium"
  }
]

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