Initial commit: Transcience MVP

Top-down twin-stick bullet-hell, Godot 4.7, server-authoritative dedicated
server with client-side prediction. Clients send input only; the server
resolves every hit for both players and enemies (no PvP).

- SimWorld: whole simulation as plain RefCounted objects (no nodes, no
  physics server), ~0.24ms/tick at peak load -- runs headless for free and
  drives 78 tests in under a second
- BulletPool: struct-of-arrays bullet storage, replicated as spawn/despawn
  events rather than per-tick state
- Emitter framework (Ring/AimedSpread/WallGap/ArcSweep) shared by trash
  enemies and bosses -- a new boss is data in src/content/content.gd, no
  simulation changes
- The Warden of the Fold: stationary 4-phase boss built entirely on that
  format
- Lobby hub with a portal into on-demand dungeon instances; one process
  hosts the hub plus every concurrent dungeon
- Emergency escape: 3s server-owned channel, cancelled by damage
- tools/check.sh, test.sh (GUT), smoke.sh (real server + bot clients over
  ENet), bench.gd; git hooks wired to the same scripts
- docs/ARCHITECTURE.md, NETCODE.md, WORKFLOW.md, ROADMAP.md

addons/gut/gui/option_maker.gd

@@ -0,0 +1,124 @@
+var PanelControls = load("res://addons/gut/gui/panel_controls.gd")
+
+# All titles so we can free them when we want.
+var _all_titles = []
+
+
+var base_container = null
+# All the various PanelControls indexed by thier keys.
+var controls = {}
+
+
+func _init(cont):
+	base_container = cont
+
+
+func add_title(text):
+	var row = PanelControls.BaseGutPanelControl.new(text, text)
+	base_container.add_child(row)
+	row.connect('draw', _on_title_cell_draw.bind(row))
+	_all_titles.append(row)
+	return row
+
+
+func add_ctrl(key, ctrl):
+	controls[key] = ctrl
+	base_container.add_child(ctrl)
+
+
+func add_number(key, value, disp_text, v_min, v_max, hint=''):
+	var ctrl = PanelControls.GpcNumber.new(disp_text, value, v_min, v_max, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+
+func add_float(key, value, disp_text, step, v_min, v_max, hint=''):
+	var ctrl = PanelControls.GpcFloat.new(disp_text, value, step, v_min, v_max, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+
+func add_select(key, value, values, disp_text, hint=''):
+	var ctrl = PanelControls.GpcSelect.new(disp_text, value, values, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+
+func add_value(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcString.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+func add_multiline_text(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcMultiLineString.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+func add_boolean(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcBoolean.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+
+func add_directory(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcDirectory.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	ctrl.dialog.title = disp_text
+	return ctrl
+
+
+func add_file(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcDirectory.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	ctrl.dialog.file_mode = ctrl.dialog.FILE_MODE_OPEN_FILE
+	ctrl.dialog.title = disp_text
+	return ctrl
+
+
+func add_save_file_anywhere(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcDirectory.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	ctrl.dialog.file_mode = ctrl.dialog.FILE_MODE_SAVE_FILE
+	ctrl.dialog.access = ctrl.dialog.ACCESS_FILESYSTEM
+	ctrl.dialog.title = disp_text
+	return ctrl
+
+
+func add_color(key, value, disp_text, hint=''):
+	var ctrl = PanelControls.GpcColor.new(disp_text, value, hint)
+	add_ctrl(key, ctrl)
+	return ctrl
+
+
+var _blurbs = 0
+func add_blurb(text):
+	var ctrl = RichTextLabel.new()
+	ctrl.fit_content = true
+	ctrl.bbcode_enabled = true
+	ctrl.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
+	ctrl.text = text
+	add_ctrl(str("blurb_", _blurbs), ctrl)
+	return ctrl
+
+
+# ------------------
+# Events
+# ------------------
+func _on_title_cell_draw(which):
+	which.draw_rect(Rect2(Vector2(0, 0), which.size), Color(0, 0, 0, .15))
+
+
+# ------------------
+# Public
+# ------------------
+
+func clear():
+	for key in controls:
+		controls[key].free()
+
+	controls.clear()
+
+	for entry in _all_titles:
+		entry.free()
+
+	_all_titles.clear()