Rename project to sacredK

sacred_re.dll/.exe/.ini/.log/_crash files are now sacredK.*; inventory saves
with the old "sacred_re.inventory" format id still load.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/todo.md

@@ -93,7 +93,7 @@ mouse/keyboard like `tools/autotest-load.ps1`:
 2. play scripted input through the existing hooks (keys, casting arts, weapon
    set switches, save + reload);
 3. take back-buffer screenshots at checkpoints and log checks to
-   `sacred_re.log` (aura effect present after reload, slot 6-7 inventories
+   `sacredK.log` (aura effect present after reload, slot 6-7 inventories
    survive a save, ...);
 4. exit the game.
 
@@ -116,7 +116,7 @@ W, A and S were game hotkeys. With WASD movement (`src/mods/wasd.cpp`) their
 actions moved to other keys for now; choose final bindings (and update the
 in-game texts/tooltips that name the old keys):
 
-| Key | Action | Temporary key (sacred_re.ini) |
+| Key | Action | Temporary key (sacredK.ini) |
 |---|---|---|
 | W | potion kind 3 (`cEngine::UseActionSlot`, like Q/E/R/B/Space) | game potion keys switched off; `[keys] Potion1-5` (docs/options.md) |
 | A | pick up items nearby (creature event 0x113) | Q (`[keys] PickUp`, 2026-10-17; was V) |