- Create internal/logger package with Logger wrapper around slog
- Logger automatically adds source file, line number, and function name to all log entries
- Use golang.org/x/term to properly detect if stdout is a terminal
- Replace all slog.Logger usage with logger.Logger throughout the codebase
- Remove verbose logging from database GetStats() method
- Update all constructors and dependencies to use the new logger
- Remove old database Config struct and related functions
- Update database.New() to accept config.Config parameter
- Update routingtable.New() to accept config.Config parameter
- Update snapshotter.New() to accept config.Config parameter
- Simplify fx module providers in app.go
- Fix truthiness check for environment variables
- Handle empty state directory gracefully in routing table and snapshotter
- Update all tests to use empty state directory for testing
- Move GetDetailedStats() call outside of read lock to avoid deadlock
- Add timing logs to identify performance bottlenecks during snapshot
- Log duration for copying routes, marshaling JSON, and writing to disk
- Remove immediate snapshot when periodic goroutine starts
- Fix variable shadowing issue in snapshotter creation
- Add debug logging for snapshotter shutdown
- Snapshots now only occur after 10 minutes or on shutdown
- Create snapshotter package with periodic (10 min) and on-demand snapshots
- Add JSON serialization with gzip compression and atomic file writes
- Update routing table to track AddedAt time for each route
- Load snapshots on startup, filtering out stale routes (>30 minutes old)
- Add ROUTEWATCH_DISABLE_SNAPSHOTTER env var for tests
- Use OS-appropriate state directories (macOS: ~/Library/Application Support, Linux: /var/lib or XDG_STATE_HOME)
- Update server Stats and StatsResponse structs to include ipv4_routes and ipv6_routes
- Fetch detailed routing table stats to get IPv4/IPv6 breakdown
- Add IPv4 Routes and IPv6 Routes display to HTML status page
- Change metric values to monospace font and remove bold styling
