Note

Medium Risk
Touches logging and file I/O (including background coroutines and rotation), so regressions could impact log capture or file cleanup; changes are covered by new unit tests but still affect runtime diagnostics and storage.

Overview
Replaces the Treessence-based file logging with a custom Timber FileLoggerTree backed by FileLoggerImpl/FileSystemFacade, including async buffered writes, log rotation, and resource release after idle.

Updates LoggerInteractor to use the new logger, changes log file naming/pattern and increases max file size, and ensures file-logger trees are cleared on re-init and log file selection uses most-recently-modified.

Hardens logging privacy by masking secrets in FSCredentials.toString() (via new substituteAllExcept) and fixes the settings toggle to persist isFileLogEnabled before reinitializing logging. Adds coroutine test dependency and comprehensive unit tests for the new file logger, and updates the Gradle wrapper to 8.5 (plus regenerated gradlew).

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