This commit adds a new `ctrld log tail` subcommand that streams
runtime debug logs to the terminal in real-time, similar to `tail -f`.
Changes:
- log_writer.go: Add Subscribe/tailLastLines for fan-out to tail clients
- control_server.go: Add /log/tail endpoint with streaming response
- Internal logging: subscribes to logWriter for live data
- File-based logging: polls log file for new data (200ms interval)
- Sends last N lines as initial context on connect
- commands.go: Add `log tail` cobra subcommand with --lines/-n flag
- control_client.go: Add postStream() with no timeout for long-lived connections
Usage:
sudo ctrld log tail # shows last 10 lines then follows
sudo ctrld log tail -n 50 # shows last 50 lines then follows
Ctrl+C to stop
smol tweaks to nameserver test queries
fix restoreDNS errors
add some debugging information
fix wront type in log msg
set send logs command timeout to 5 mins
when the runningIface is no longer up, attempt to find a new interface
prefer default route, ignore non physical interfaces
prefer default route, ignore non physical interfaces
add max context timeout on performLeakingQuery with more debug logs
