dsh-approval-chime: DSH Approval Chime Plugin

`dsh-approval-chime` is a DeepSeek Harness plugin designed to prevent approval requests from being ignored through auditory and visual feedback. It features approval chimes, built-in wind chime/bell/buzzer tones, local audio import, and session-specific settings. It supports per-session muting and background pop-up notifications. After installation, users must configure the tone and volume in settings, with a test notification feature available. Windows system notifications require additional registration. The plugin does not alter the approval workflow, and settings are stored in local files.