New tools: - tools/eeprom_write.py: EEPROM firmware flash with backup, verify, dry-run - tools/ts_analyze.py: MPEG-2 transport stream analyzer with PAT/PMT parsing DVB-S2 investigation confirms BCM4500 hardware limitation (no LDPC/BCH silicon). Fix --json flag on tune.py subcommands (argparse parent/child scoping). All tools verified against live SkyWalker-1 hardware.