v1.6.0

✨ Added

• Unlimited music library: on-demand growing PSRAM blocks (instead of MAX_TRACKS=512), track cache /.fennek/tracks.bin (boot in seconds), background scan in readdir chunks. Scans pause during playback (anti-stutter). Track paths up to 256 chars (Calibre).
• Web file manager (Files app + webfm): Wi-Fi station with an embedded HTML page + JSON API to browse/upload/download/delete SD files over http://fennek.local.
• Console: sleep command + boot/reset diagnostics in status.