fix(build): align runtime env acceptance gate

tools/build/lib/acceptance.sh

@@ -183,11 +183,23 @@ run_fix20_acceptance_subset() {
     || fail "acceptance: the default obfs type must not be re-declared in: $default_declarations"
 
   log_step "Acceptance: runtime env is derived from config, not literals"
-  ! grep -Eq 'HY2XS_HYSTERIA_OBFS_TYPE=(gecko|salamander)' orchestrator/src/config/env.ts \
-    || fail "acceptance: renderRuntimeEnv must not print a hardcoded obfs type"
-  grep -q 'HY2XS_HYSTERIA_OBFS_TYPE=\${config.hysteriaObfsType}' orchestrator/src/config/env.ts \
-    || fail "acceptance: renderRuntimeEnv must derive the obfs type from the parsed config"
-  ! grep -Eq '\|\|\s*"(gecko|salamander)"' orchestrator/src/config/env.ts \
+  # runtime env mappings live in runtimeEnvEntries(); renderRuntimeEnv only
+  # serializes that shared list. Do not require the old inline interpolation.
+  ! grep -Eq \
+    'HY2XS_HYSTERIA_OBFS_TYPE=(gecko|salamander)' \
+    orchestrator/src/config/env.ts \
+    || fail "acceptance: runtime env must not contain a hardcoded obfs type"
+  grep -Eq \
+    '\["HY2XS_HYSTERIA_OBFS_TYPE",[[:space:]]*config\.hysteriaObfsType\]' \
+    orchestrator/src/config/env.ts \
+    || fail "acceptance: runtimeEnvEntries must derive the obfs type from the parsed config"
+  grep -Eq \
+    'renderEnvFile\(runtimeEnvEntries\(config\)\)' \
+    orchestrator/src/config/env.ts \
+    || fail "acceptance: renderRuntimeEnv must render the shared runtimeEnvEntries list"
+  ! grep -Eq \
+    '\|\|[[:space:]]*"(gecko|salamander)"' \
+    orchestrator/src/config/env.ts \
     || fail "acceptance: env.ts must not carry its own obfs fallback default"
 
   log_step "Acceptance: package metadata records how the Hysteria version was chosen"