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Reading a log file meant copying the configured path out of Settings and pasting it into a file manager. The Logs directory row now carries an Open button beside Browse that reveals the folder directly. The new src/platform/filemanager package holds the platform split — explorer on Windows, xdg-open on Linux, an "unsupported" error elsewhere — and starts the handler without waiting on it, since Explorer exits non-zero even after it opens the window and blocking would stall the UI thread. A missing path, a path that is a file, and a handler that will not start are all reported to the user; the logs directory does not exist until the first run, so that case is reachable. The button opens whatever the field currently holds rather than the saved config, so an edit can be checked before Save. Resolving a relative directory against the application folder is the store's rule, so resolveConfiguredDir is now exported as storage.ResolveConfiguredDir instead of being duplicated in the UI. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>