v2.7.9: Enhance build diagnostics, fix keep_venv config load, and restore Nuitka --jobs

- feat(log): add build diagnostics header and [DETAILED_ONLY] log routing tag
- feat(log): capture full exception traceback on fatal build failures
- feat(venv): add timestamped rename fallback and manual prompt for invalid venvs
- feat(build): implement adaptive RAM concurrency tuning and --low-memory mode for Nuitka
- fix(config): fix keep_venv checkbox state reset bug during config loading
- fix(nuitka): restore missing --jobs parameter in Nuitka build command
- fix(app): optimize suffix stripping logic for clean_product_name
- i18n: update ZH_CN dictionary and complete language dynamic refresh bindings

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "qpypack"
-version = "2.7.8"
+version = "2.7.9"
 description = "A cross-platform GUI packaging and compilation suite based on PyInstaller and Nuitka."
 readme = "README_EN.md"
 authors = [