feat: browser access (allowed_origins, CORS with Private Network Access), job cancel, Tomie/Unity adapters, benchmark

Includes earlier uncommitted work: Tomie and Unity adapters, benchmark, structured output, call metrics.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

scripts/windows/tomie/translation_status.bat

@@ -0,0 +1,6 @@
+@echo off
+setlocal
+chcp 65001 >nul
+cd /d "%~dp0..\..\.."
+".venv\Scripts\python.exe" -X utf8 -m local_translator.tomie_full --config tomie.json status
+if not defined LOCAL_TRANSLATOR_NO_PAUSE pause