Dark Iron Dwarf - Fabric Minecraft 1.21.1

Original author: GamerPotion. Original assets and license retained.
Requires Fabric API for 1.21.1, Origins 1.13.0-pre.3 for 1.21.1,
Pehkui 3.8.3 for Fabric 1.21.1, and a Fabric 1.21.1 DarkBlades build.
Requires Java 21 or newer and Fabric Loader 0.16.5 or newer.
Install this addon and its dependencies on both client and server.

All 18 original custom powers and the Dark Iron Dwarf origin are included.
Preserved original balance, ability controls, cooldowns and effect levels.
Pehkui proportions: height 0.6, width 0.75. Size reapplies on loading,
selection and respawn; height/width reset when the origin is removed.
Dark Hammer gold-block crafting and offhand abilities retain their item ID.

Updated attributes and modifiers to the current Origins/Apoli format,
origin icon and starting equipment to item components, equipped-item
actions and status effects to current fields, and fall-damage immunity
to the current damage tag.

Fixed an original night-vision configuration error: it used an ignored
top-level block_condition and tested above Y=50. It now uses a valid
entity condition and works at Y=50 or below, as its description says.

Default active controls:
Inner Rage: Origins primary ability key while holding Dark Hammer offhand.
Darkest Hammer: Load Toolbar Activator key (normally X), Dark Hammer offhand.
Hammer Time: crafting a gold block produces a Dark Hammer for this origin.

Validation: dedicated Minecraft 1.21.1 / Java 21 server with Origins
1.13.0-pre.3, Pehkui 3.8.3, Fabric API 0.116.17, and the user's
DarkBlades 1.2.9+mc1.21.1 source build. All 18 powers load and validate.
Live checks cover origin selection, health/armor/speed, starting helmet,
hammer crafting and offhand regeneration/ignition, on-fire condition,
fall/fire/poison immunities, night-vision height condition, and Pehkui
proportions plus cleanup on changing origin. Client rendering and physical
key input have not been play-tested here.
