fix: stabilize systemd deployment and release updates

scripts/test-install-fixture.sh

@@ -29,6 +29,7 @@ mode_of() {
   sed -n '/^normalized_host_arch()/,/^}/p' "$ROOT/deploy/install.sh"
   sed -n '/^azul_arch()/,/^}/p' "$ROOT/deploy/install.sh"
   sed -n '/^java_arch_matches_host()/,/^}/p' "$ROOT/deploy/install.sh"
+  sed -n '/^java_home_from_bin()/,/^}/p' "$ROOT/deploy/install.sh"
   sed -n '/^system_java_home()/,/^}/p' "$ROOT/deploy/install.sh"
   sed -n '/^sha256_file()/,/^}/p' "$ROOT/deploy/install.sh"
   sed -n '/^prepare_java()/,/^}/p' "$ROOT/deploy/install.sh"
@@ -192,7 +193,7 @@ cat > "$WORK/fake-jre/bin/java" <<'JAVA'
 if [ "${1:-}" = '-XshowSettings:properties' ]; then
   printf '    os.arch = x86\n' >&2
 fi
-printf 'openjdk version "17-fixture"\n' >&2
+printf 'openjdk version "17.0.8"\n' >&2
 JAVA
 chmod 0755 "$WORK/fake-jre/bin/java"
 tar -czf "$WORK/java-fixture.tar.gz" -C "$WORK" fake-jre
@@ -213,16 +214,22 @@ download() {
   esac
 }
 ARCH_FIXTURE=i686
+APP_ROOT="$WORK/app"
 export KAIDI_JAVA_HOME="$WORK/missing-java-home"
 prepare_java >/dev/null 2>&1
 [ -x "$JAVA_STAGED_DIR/bin/java" ] || fail 'verified i686 Java runtime was not staged'
+[ "$JAVA_BIN" = "$APP_ROOT/runtime/java/bin/java" ] \
+  || fail 'downloaded Java did not select the managed fallback path'
 rm -rf "$JAVA_STAGED_DIR"
+JAVA_STAGED_DIR=
 export KAIDI_JAVA_HOME="$WORK/fake-jre"
 prepare_java >/dev/null 2>&1
-[ -d "$JAVA_STAGED_DIR" ] && [ ! -L "$JAVA_STAGED_DIR" ] \
-  || fail 'existing Java 17 runtime was not copied into managed storage'
-cmp -s "$WORK/fake-jre/bin/java" "$JAVA_STAGED_DIR/bin/java" \
-  || fail 'installer staged an unexpected local Java runtime'
+[ -z "$JAVA_STAGED_DIR" ] \
+  || fail 'installer copied an existing server Java runtime into application storage'
+EXPECTED_LOCAL_JAVA=$(readlink -f "$WORK/fake-jre/bin/java" 2>/dev/null \
+  || printf '%s' "$WORK/fake-jre/bin/java")
+[ "$JAVA_BIN" = "$EXPECTED_LOCAL_JAVA" ] \
+  || fail 'installer did not select the existing server Java executable directly'
 
 export RELEASE_API_URL=https://gitea.fixture.invalid/api/v1/repos/ERP-Team/kaidi/releases/latest
 RELEASE_TOKEN=fixture-read-only-token
@@ -280,6 +287,12 @@ grep -Fq '[ "$APP_ROOT" = /opt/kaidi ]' "$ROOT/deploy/install.sh" \
   || fail 'installer no longer rejects unsupported custom roots'
 grep -Fq '8.4.*) ;;' "$ROOT/deploy/install.sh" \
   || fail 'installer no longer enforces MySQL 8.4.x'
+grep -Fq '32-bit Linux deployment requires glibc' "$ROOT/deploy/install.sh" \
+  || fail 'installer does not reject unsupported musl 32-bit hosts before downloading Java'
+grep -Fq '32-bit Linux deployment requires the glibc loader' "$ROOT/deploy/install.sh" \
+  || fail 'installer does not reject a 32-bit host without the glibc loader'
+grep -Fq 'preflight_runtime_commands' "$ROOT/deploy/install.sh" \
+  || fail 'installer does not validate required runtime commands'
 # shellcheck disable=SC2016 # Match literal installer source.
 grep -Fq 'write_env_file_preserving_unknown "$CONFIG_ROOT/kaidi.env"' "$ROOT/deploy/install.sh" \
   || fail 'installer no longer uses the reinstall-safe environment writer'
@@ -289,14 +302,14 @@ grep -Fq 'download "$api" "$java_metadata"' "$ROOT/deploy/install.sh" \
 # shellcheck disable=SC2016 # Match literal installer source.
 grep -Fq 'java_sha256=$(jq -er' "$ROOT/deploy/install.sh" \
   || fail 'installer no longer obtains the Java runtime SHA-256'
-grep -Fq 'Copying existing Java 17 runtime' "$ROOT/deploy/install.sh" \
+grep -Fq 'Using existing Java 17+ runtime' "$ROOT/deploy/install.sh" \
   || fail 'installer no longer reuses a local Java 17 runtime'
 # shellcheck disable=SC2016 # Match literal installer source.
-grep -Fq 'cp -R "$system_home/." "$JAVA_STAGED_DIR/"' "$ROOT/deploy/install.sh" \
-  || fail 'installer no longer copies a local Java runtime into managed storage'
+grep -Fq 'JAVA_BIN="$system_home/bin/java"' "$ROOT/deploy/install.sh" \
+  || fail 'installer no longer records the selected server Java path'
 # shellcheck disable=SC2016 # Match literal installer source.
-! grep -Fq 'ln -s "$system_home"' "$ROOT/deploy/install.sh" \
-  || fail 'installer must not link the service to an externally managed Java directory'
+! grep -Fq 'cp -R "$system_home/."' "$ROOT/deploy/install.sh" \
+  || fail 'installer copied an existing server Java runtime into managed storage'
 # shellcheck disable=SC2016 # Match the literal installer command.
 grep -Fq -- '--connect-timeout 1 --max-time 2 "$HEALTH_URL" 2>/dev/null' "$ROOT/deploy/install.sh" \
   || fail 'installer no longer performs a quiet bounded health check'
@@ -317,6 +330,10 @@ grep -Fq 'systemctl reset-failed kaidi-finance.service' "$ROOT/deploy/install.sh
   || fail 'installer can execute before the complete curl stream is parsed'
 grep -Fqx 'StartLimitBurst=3' "$ROOT/deploy/systemd/kaidi-finance.service" \
   || fail 'application service no longer has a bounded restart burst'
+grep -Fqx 'ExecStart=/opt/kaidi/current/ops/baota-start.sh' "$ROOT/deploy/systemd/kaidi-finance.service" \
+  || fail 'application service bypasses the Java-selecting launcher'
+grep -Fqx 'Environment=KAIDI_ENV_PRELOADED=true' "$ROOT/deploy/systemd/kaidi-finance.service" \
+  || fail 'systemd service user would need to read the root-only configuration directory'
 grep -Fqx 'Restart=no' "$ROOT/deploy/systemd/kaidi-update.service" \
   || fail 'update service can automatically repeat a failed switching transaction'
 grep -Fq -- '-/www/wwwroot/kaidi' "$ROOT/deploy/systemd/kaidi-update.service" \
@@ -392,9 +409,11 @@ grep -Fq 'load_runtime_database_env' "$ROOT/deploy/update.sh" \
 # shellcheck disable=SC2016 # Match literal installer source.
 grep -Fq 'install -d -o root -g "$SERVICE_GROUP" -m 0750 "$UPDATE_STATE_ROOT"' "$ROOT/deploy/install.sh" \
   || fail 'update state parent is not group-accessible to the application user'
-grep -Fq 'kaidi-finance-1.0.0-preview.25.tar.gz' "$ROOT/README.md" \
+grep -Fq 'kaidi-finance-1.0.0-preview.31.tar.gz' "$ROOT/README.md" \
   || fail 'README does not document the public manual-deployment artifact'
 grep -Fq 'ops/baota-init.sh' "$ROOT/README.md" \
   || fail 'README does not document the local Baota initialization command'
+grep -Fq 'FINANCE_UPDATE_ENABLED false' "$ROOT/deploy/baota-init.sh" \
+  || fail 'Baota manual mode still exposes the unstable online updater'
 
 printf 'Install configuration, custom port, public Gitea, optional private token, i686, setup wizard, and MySQL 8.4 fixtures passed\n'