Replace disconnected Transactions/Applications pages with a persistent
collapsible sidebar listing apps by health status. Add app-scoped view
(/apps/:group) with filtered stats, route chips, and scoped table.
Merge Processor Tree into diagram detail panel with Inspector/Tree
toggle and resizable divider. Remove max-width constraint for full
viewport usage. All view states are deep-linkable via URL.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
