接续text24.txt

结论：L4-TOOL-DB native protocol proof 已通过，ToolDbProcessPort/OPFS/browser gates 保持 contract-only 且不解锁 promotion。

wasm-port/tests/browser/tool_db_process_browser_smoke.html

@@ -94,9 +94,9 @@
         dbFileText,
         startupToolCount: 10,
         mutationCount: 3,
-        runtimeMode: "wasm-tool-db-protocol-worker",
+        runtimeMode: "contract-only",
       });
-      assertEqual(diagnostics.runtimeMode, "wasm-tool-db-protocol-worker", "diagnostics runtime mode");
+      assertEqual(diagnostics.runtimeMode, "contract-only", "diagnostics runtime mode");
       assertEqual(diagnostics.dbProgramPath, "./db_nonran.py", "diagnostics DB_PROGRAM");
       assertEqual(diagnostics.protocolTranscriptReady, true, "diagnostics transcript");
       assertEqual(diagnostics.opfsPersistenceReady, true, "diagnostics OPFS");