refactor(meta): rename mod directory and descriptor to lords-of-ash

Renamed mistborn_final_empire/ to lords_of_ash/ and
mistborn_final_empire.mod to lords-of-ash.mod using git mv.
Updated all references in CLAUDE.md, ck3-game-install skill,
and commit skill.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -6,7 +6,7 @@ universe during the Final Empire era. CK3 version 1.12.*.
 ## Project Structure
 
 ```
-mistborn_final_empire/          # The mod itself (CK3 mod directory)
+lords_of_ash/          # The mod itself (CK3 mod directory)
   common/                       # Game data definitions
     culture/                    # Cultures: noble_scadrian, skaa, terris
     decisions/                  # Player decisions (balls, snapping, breeding)
@@ -23,7 +23,7 @@ mistborn_final_empire/          # The mod itself (CK3 mod directory)
   events/                       # Event chains (snapping, balls, Lord Ruler, etc.)
   history/                      # Starting characters and title holders
   localization/english/         # All display strings (l_english.yml)
-mistborn_final_empire.mod       # Outer mod descriptor (has path field)
+lords-of-ash.mod       # Outer mod descriptor (has path field)
 docs/
   lore/                         # Mistborn universe reference material
   bookmarks/                    # Story arc planning (characters, scenarios)
@@ -82,7 +82,7 @@ metal, compounding checks fire on the yearly pulse.
 
 ## Known Issues
 
-See `mistborn_final_empire/REVIEW_NOTES.txt` for the full review. Key issues:
+See `lords_of_ash/REVIEW_NOTES.txt` for the full review. Key issues:
 - Missing event files for several decisions (kandra, hemalurgy, atium, skaa)
 - Missing modifier definitions (lord_ruler_attention tiers, ruin_influence, etc.)
 - Missing traits for higher/Era 2 metals (chromium, aluminum, cadmium, bendalloy)