The files' "krak" grenade turns out to be a blind grenade, and now behaves like one.

**What changed**

- **The blind grenade only blinds.** No damage, no stun, no knockback. Everyone with a clear line to the blast and within range is blinded, allies and the thrower included: 3.5 s within 8 m, 2 s out to 30 m. The radii and durations come from the game's data (`ammunition_type = blind_grenade`, shown in the game's UI as "Blind Grenades"). Measuring the line of sight to the eye is our interpretation. The HUD and kill feed say "blind grenade"; `--equipment blind` (and the old name `krak`) pick it.
- **Ground pound and landing blasts were checked** against the jump-pack data for both sides (25 explosive + 50 shield damage at 7 m with fall-off, landings 15 and 5). Nothing needed changing.

**Evidence**

Test bot runs blinded players at 26.8 m and 29.5 m, the thrower included, with zero damage, and ground-pound impacts matched the data. The network protocol stays at version 21.

*Unofficial fan project: not affiliated with or endorsed by Games Workshop, Relic, THQ, Sega or Focus. Screenshots show original game assets rendered from the owner's own install of Warhammer 40,000: Space Marine (2011); no game files are distributed.*