Reorganize the codebase into role-based folders (snake_case)

Move the 40-odd root-level scripts and scenes into a tree that groups by role,
per the approved roadmap (WS2/WS3): actors/{player,matador,bear}, systems/{combat,
fx,input,debug,render,crowd,config}, ui/, props/ (was tscn_s/). Rename the shell
scene.tscn -> levels/game_shell.tscn and every PascalCase scene to snake_case
(Player.tscn -> player.tscn, MainMenu.tscn -> main_menu.tscn, etc.) so the
case-insensitive web/macOS filesystems can't alias two files together.

Done as a scripted move: each file travels with its .uid; every quoted res:// path
across scenes, scripts, .tres, and project.godot's 9 autoloads is rewritten; the
.godot uid/class cache is rebuilt from scratch. Scenes still resolve by uid, so the
rewrite is belt-and-suspenders. Lint globs (run_tests.sh + both CI workflows) now
walk the new dirs; an orphan animation_tree.gd.uid and 7 pre-existing trailing-
whitespace lints (barrel/torch, never covered by the old root-only glob) are cleaned.

Full suite green on both sides. Asset consolidation (Assets/Animations/fonts ->
art/) is deferred — moving imported .glb/.png/.ttf is safer done in the editor.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017KoYBYQgRyY1zDHXMsXY3V

ui/ui_fonts.gd

@@ -0,0 +1,49 @@
+class_name UiFonts
+extends RefCounted
+## Shared thematic fonts for menus and HUD. Cinzel is a Roman monumental capital
+## typeface — a deliberate nod to the "-osseum" (Colosseum) in Bullosseum.
+##
+## Fonts load via load_dynamic_font so they resolve identically in the editor,
+## headless tests and exported builds, whether or not the .ttf has been imported.
+
+const _DECORATIVE := "res://fonts/CinzelDecorative-Bold.ttf"
+const _ROMAN      := "res://fonts/Cinzel.ttf"
+
+static var _title: FontFile = null
+static var _body: FontFile = null
+static var _body_bold: FontVariation = null
+
+
+## Ornate display face — big banners, menu title, win/lose text.
+static func title() -> FontFile:
+	if _title == null:
+		_title = _load(_DECORATIVE)
+	return _title
+
+
+## Cleaner monumental face — buttons, labels, body copy.
+static func body() -> FontFile:
+	if _body == null:
+		_body = _load(_ROMAN)
+	return _body
+
+
+## Emboldened Roman face for small, high-legibility bits (keycaps, badges) where
+## Cinzel's thin regular strokes wash out. Faked via FontVariation since only the
+## regular weight ships, so no extra .ttf is needed.
+static func body_bold() -> FontVariation:
+	if _body_bold == null:
+		_body_bold = FontVariation.new()
+		_body_bold.base_font = body()
+		_body_bold.variation_embolden = 0.5
+	return _body_bold
+
+
+static func _load(path: String) -> FontFile:
+	if ResourceLoader.exists(path):
+		var res := load(path)
+		if res is FontFile:
+			return res as FontFile
+	var f := FontFile.new()
+	f.load_dynamic_font(path)
+	return f