host1.conf: HOST1_RAMDISK_SIZE 8G→10G, WARN_GB 6.8→8.5, LOW_GB 5.5→7.
ramdisk_stop.sh: new Tools/ script — redirects symlink to SSD before unmount
so Emby keeps writing during maintenance, auto-falls back to lazy umount
when only directory handles are open (no active writes).
common.sh: fix `info` call at line 595 (undefined) → `log`.
Tools docs: added ramdisk_stop.sh to README table, categories, diagram, and Manual.
