Позиционирование как самостоятельного продукта и переход на AGPL-3.0-only

HY2XS больше не описывается как форк H UI. Из README, docs, сообщений
builder'а и post-install metadata убрана вся fork/H UI терминология.

Лицензия:
- LICENSE: MIT заменён на полный текст AGPL-3.0-only
- README: бейдж и раздел лицензии, подпись Flamy Studio
- orchestrator/package.json, apps/frontend/package.json: license
- package.sh: LICENSE кладётся в install package, license=AGPL-3.0-only
  в metadata
- verify.sh, acceptance.sh: проверки корневой AGPL и metadata

Документация:
- 04-admin-panel-h-ui-fork.md -> 04-admin-panel.md, переписан вокруг
  модели Hysteria2 = external runtime dependency,
  HY2XS admin = native HY2XS component
- docs 01, 02, 03, 08, 09, 11, 12, README: единая терминология HY2XS admin

post-install.env:
- блок HUI_* заменён на HY2XS_ADMIN_*, HUI_FORK_REF -> HY2XS_ADMIN_SOURCE

Внутренний legacy namespace (H_UI_* ключи SQLite, HUI_DATA/HUI_LOG,
API /hui, h_ui_db.sql) намеренно не тронут: он требует отдельной
миграции БД и выносится в отдельный этап.

tools/build/lib/verify.sh

@@ -2,6 +2,7 @@
 set -euo pipefail
 
 require_repo_layout() {
+  [ -f "LICENSE" ] || fail "missing LICENSE"
   [ -d "orchestrator/src" ] || fail "missing orchestrator/src"
   [ -f "orchestrator/package.json" ] || fail "missing orchestrator/package.json"
   [ -f "orchestrator/bun.lock" ] || fail "missing orchestrator/bun.lock"
@@ -44,6 +45,7 @@ verify_archive() {
   listing="$(tar -tzf "$archive")"
 
   printf '%s\n' "$listing" | grep -q '^hy2xs-install/install.sh$' || fail "archive missing install.sh"
+  printf '%s\n' "$listing" | grep -q '^hy2xs-install/LICENSE$' || fail "archive missing LICENSE"
   printf '%s\n' "$listing" | grep -q '^hy2xs-install/orchestrator/hy2xs-orchestrator$' || fail "archive missing orchestrator artifact"
   printf '%s\n' "$listing" | grep -q '^hy2xs-install/ui/hy2xs-admin/hy2xs-admin$' || fail "archive missing bundled UI binary"
   printf '%s\n' "$listing" | grep -q '^hy2xs-install/systemd/hysteria-server.service$' || fail "archive missing hysteria systemd unit"
@@ -53,6 +55,13 @@ verify_archive() {
   printf '%s\n' "$listing" | grep -q '^hy2xs-install/templates/env/post-install.env.tpl$' || fail "archive missing post-install env template"
   printf '%s\n' "$listing" | grep -q '^hy2xs-install/metadata/checksums.txt$' || fail "archive missing checksums"
 
+  local license_text
+  license_text="$(tar -xOzf "$archive" hy2xs-install/LICENSE)"
+  printf '%s\n' "$license_text" | grep -q 'GNU AFFERO GENERAL PUBLIC LICENSE' \
+    || fail "packaged LICENSE is not the GNU Affero General Public License"
+  printf '%s\n' "$license_text" | grep -q 'Version 3, 19 November 2007' \
+    || fail "packaged LICENSE is not AGPL version 3"
+
   local env_content
   env_content="$(tar -xOzf "$archive" hy2xs-install/config/hy2xs.env)"
   printf '%s\n' "$env_content" | grep -q 'replace-with-your-domain.example' && fail "packaged hy2xs.env contains placeholder domain"
@@ -80,6 +89,7 @@ verify_archive() {
   printf '%s\n' "$meta" | grep -q '^source_git_commit=' || fail "metadata missing source_git_commit"
   printf '%s\n' "$meta" | grep -q '^dirty_tree=' || fail "metadata missing dirty_tree"
   printf '%s\n' "$meta" | grep -q '^build_profile=production$' || fail "metadata missing build_profile=production"
+  printf '%s\n' "$meta" | grep -q '^license=AGPL-3.0-only$' || fail "metadata missing license=AGPL-3.0-only"
 
   if declare -F run_fix20_acceptance_subset >/dev/null 2>&1; then
     run_fix20_acceptance_subset "$tmp/hy2xs-install"