fix(licence-check): recognise AGPL-3.0 in the body classifier

check-licence-consistency.sh classified MPL-2.0, PMPL-1.0, GPL-3.0,
Apache-2.0, MIT and BSD-3-Clause verbatim texts, but had no AGPL-3.0
template. A repo with a full-text GNU AFFERO GPL LICENSE (and no SPDX
header line) therefore classified as UNKNOWN and failed the check.

This forced the estate's deliberate AGPL exceptions (the co-developed-with-son
games) into an SPDX-stub LICENSE to pass — which GitHub then reads as
NOASSERTION/"Other" rather than AGPL. It also actively rejected
airborne-submarine-squadron once its wrongly-clobbered MPL LICENSE was
restored to its intended AGPL (asq PR #57): the check passed the wrong state
and failed the right one.

Add has_agpl (matches "GNU AFFERO GENERAL PUBLIC LICENSE"), classified before
plain GPL-3.0 so the Affero title wins. A full-text AGPL LICENSE is now
accepted as a canonical licence file, so AGPL repos can use GitHub-detectable
full text like the MPL repos already do.

Verified: modified script exits 0 against airborne-submarine-squadron
(full-text AGPL) and still exits 0 against nextgen-typing (MPL) — no regression.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: hyperpolymath

scripts/check-licence-consistency.sh

@@ -71,6 +71,7 @@ has_mpl2_text=$(count_in 'Mozilla Public License Version 2\.0|Mozilla Public Lic
 has_pmpl_text=$(count_in_i 'PMPL-1\.0-or-later|Palimpsest License \(PMPL')
 has_apache=$(count_in 'Apache License.*Version 2\.0')
 has_mit=$(count_in 'MIT License')
+has_agpl=$(count_in 'GNU AFFERO GENERAL PUBLIC LICENSE')
 has_gpl3=$(count_in 'GNU GENERAL PUBLIC LICENSE.*Version 3')
 has_bsd3=$(count_in 'BSD.*3-Clause')
 has_proprietary=$(count_in_i 'All Rights Reserved')
@@ -89,6 +90,13 @@ elif [ "$has_apache" -gt 0 ]; then
   body_class="Apache-2.0"
 elif [ "$has_mit" -gt 0 ]; then
   body_class="MIT"
+elif [ "$has_agpl" -gt 0 ]; then
+  # AGPL before plain GPL-3.0: the AGPL body carries "GNU AFFERO GENERAL PUBLIC
+  # LICENSE". These are deliberate co-developed-project exceptions to the estate
+  # MPL-2.0 policy (e.g. the games airborne-submarine-squadron, the-nash-equilibrium)
+  # and must be recognised so their full-text LICENSE files (which GitHub then
+  # detects as AGPL, unlike an SPDX-stub) pass this check.
+  body_class="AGPL-3.0"
 elif [ "$has_gpl3" -gt 0 ]; then
   body_class="GPL-3.0"
 elif [ "$has_bsd3" -gt 0 ]; then