chore(licence): normalise to MPL-2.0 + CC-BY-SA-4.0 (canonical pair) (#61)

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): 8. Manual-review licence PR.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.githooks/install.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 #
 # Install Git hooks for Candy Crash
 # Usage: ./.githooks/install.sh

.githooks/pre-commit

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 #
 # Git pre-commit hook for Candy Crash
 # Thin wrapper that delegates to Just recipes

.githooks/pre-push

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 #
 # Git pre-push hook for Candy Crash
 # Thin wrapper that delegates to Just recipes

.github/pull_request_template.md

@@ -1,5 +1,5 @@
 <!--
-SPDX-License-Identifier: MPL-2.0-or-later
+SPDX-License-Identifier: CC-BY-SA-4.0
 -->
 
 ## Description

.github/workflows/governance.yml

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: PMPL-1.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 name: Governance
 
 on:

.github/workflows/hypatia-scan.yml

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: PMPL-1.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 name: Hypatia Security Scan
 
 on:

.github/workflows/scorecard.yml

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: PMPL-1.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 name: OSSF Scorecard
 
 on:

.husky/pre-commit

@@ -1,5 +1,5 @@
 #!/bin/sh
-# SPDX-License-Identifier: MIT
+# SPDX-License-Identifier: MPL-2.0
 # SPDX-FileCopyrightText: 2025 Hyperpolymath
 
 # Husky pre-commit hook for language policy enforcement

.machine_readable/svc/k9/README.adoc

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MPL-2.0
+// SPDX-License-Identifier: CC-BY-SA-4.0
 = K9 Contractiles
 :toc: left
 :icons: font

CHANGELOG.md

@@ -1,5 +1,5 @@
 <!--
-SPDX-License-Identifier: MPL-2.0
+SPDX-License-Identifier: CC-BY-SA-4.0
 SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath)
 -->