Weapons/armor: rename fields to match herní karta columns

Weapons: :bonus → :modifier, Armor: :rating → :level.
Character data verified against herní karta — all matches.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -17,7 +17,7 @@ Accessible tabletop RPG gaming engine for the Alien RPG space station USCSS CETO
 - **Corridors as rooms**: Long corridors are modeled as rooms (e.g., `F-chodba` spans entire deck F from centrální šachta to cely). Side rooms connect to the corridor.
 - **No průlez rooms**: Průlezy (hatches between decks) are NOT separate rooms. They are direct connections between the rooms they physically sit in. Cross-deck connections noted in room `:desc`.
 - **Dice calculator**: `SPC G r` — black base dice (attribute + skill) + yellow stress dice. Player rolls physical dice.
-- **Weapons/Armor**: Structured plists — weapons: `(:name :bonus :damage :range :ammo :weight)`, armor: `(:name :rating :weight)`.
+- **Weapons/Armor**: Structured plists — weapons: `(:name :modifier :damage :range :ammo :weight)`, armor: `(:name :level :weight)`.
 - **State**: Health, stress, resolve, story-points, injuries, conditions, weapons, armor, gear, tiny-items, notes. Auto-saves via `alien-rpg--autosave`. No buddy/rival/xp (not used in this campaign).
 - **Character**: prof. Héctor Navarre, biochemický inženýr, 74 let. Attributes and skills editable via `SPC G e`.
 - **Output**: All commands output to `*Alien RPG*` buffer via `switch-to-buffer` (not `pop-to-buffer` — avoids Doom popup behavior that confuses screen readers).