Add rules edition setting for condition tooltips (5e/5.5e)

Introduce a settings modal (opened from the kebab menu) with a rules edition selector for condition tooltip descriptions and a theme picker replacing the inline cycle button. About half the conditions have meaningful mechanical differences between editions. - Add description5e field to ConditionDefinition with 5e (2014) text - Add RulesEditionProvider context with localStorage persistence - Create SettingsModal with Conditions and Theme sections - Wire condition tooltips to edition-aware descriptions - Fix 6 inaccurate 5.5e condition descriptions - Update spec 003 with stories CC-3, CC-8 and FR-095–FR-102 Closes #12 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-24 17:08:41 +01:00
parent cfd4aef724
commit 4043612ccf
18 changed files with 663 additions and 82 deletions
--- a/apps/web/src/App.tsx
+++ b/apps/web/src/App.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useRef } from "react";
+import { useEffect, useRef, useState } from "react";
 import { ActionBar } from "./components/action-bar.js";
 import { BulkImportToasts } from "./components/bulk-import-toasts.js";
 import { CombatantRow } from "./components/combatant-row.js";
@@ -6,6 +6,7 @@ import {
 	PlayerCharacterSection,
 	type PlayerCharacterSectionHandle,
 } from "./components/player-character-section.js";
+import { SettingsModal } from "./components/settings-modal.js";
 import { StatBlockPanel } from "./components/stat-block-panel.js";
 import { Toast } from "./components/toast.js";
 import { TurnNavigation } from "./components/turn-navigation.js";
@@ -23,6 +24,7 @@ export function App() {

 	useAutoStatBlock();

+	const [settingsOpen, setSettingsOpen] = useState(false);
 	const playerCharacterRef = useRef<PlayerCharacterSectionHandle>(null);
 	const actionBarInputRef = useRef<HTMLInputElement>(null);
 	const activeRowRef = useRef<HTMLDivElement>(null);
@@ -62,6 +64,7 @@ export function App() {
 								onManagePlayers={() =>
 									playerCharacterRef.current?.openManagement()
 								}
+								onOpenSettings={() => setSettingsOpen(true)}
 								autoFocus
 							/>
 						</div>
@@ -90,6 +93,7 @@ export function App() {
 								onManagePlayers={() =>
 									playerCharacterRef.current?.openManagement()
 								}
+								onOpenSettings={() => setSettingsOpen(true)}
 							/>
 						</div>
 					</>
@@ -120,6 +124,10 @@ export function App() {
 				/>
 			)}

+			<SettingsModal
+				open={settingsOpen}
+				onClose={() => setSettingsOpen(false)}
+			/>
 			<PlayerCharacterSection ref={playerCharacterRef} />
 		</div>
 	);
--- a/apps/web/src/tests/test-providers.tsx
+++ b/apps/web/src/tests/test-providers.tsx
@@ -5,6 +5,7 @@ import {
 	EncounterProvider,
 	InitiativeRollsProvider,
 	PlayerCharactersProvider,
+	RulesEditionProvider,
 	SidePanelProvider,
 	ThemeProvider,
 } from "../contexts/index.js";
@@ -12,17 +13,19 @@ import {
 export function AllProviders({ children }: { children: ReactNode }) {
 	return (
 		<ThemeProvider>
-			<EncounterProvider>
-				<BestiaryProvider>
-					<PlayerCharactersProvider>
-						<BulkImportProvider>
-							<SidePanelProvider>
-								<InitiativeRollsProvider>{children}</InitiativeRollsProvider>
-							</SidePanelProvider>
-						</BulkImportProvider>
-					</PlayerCharactersProvider>
-				</BestiaryProvider>
-			</EncounterProvider>
+			<RulesEditionProvider>
+				<EncounterProvider>
+					<BestiaryProvider>
+						<PlayerCharactersProvider>
+							<BulkImportProvider>
+								<SidePanelProvider>
+									<InitiativeRollsProvider>{children}</InitiativeRollsProvider>
+								</SidePanelProvider>
+							</BulkImportProvider>
+						</PlayerCharactersProvider>
+					</BestiaryProvider>
+				</EncounterProvider>
+			</RulesEditionProvider>
 		</ThemeProvider>
 	);
 }
--- a/apps/web/src/components/tests/condition-picker.test.tsx
+++ b/apps/web/src/components/tests/condition-picker.test.tsx
@@ -6,6 +6,7 @@ import { cleanup, render, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
 import { createRef, type RefObject } from "react";
 import { afterEach, describe, expect, it, vi } from "vitest";
+import { RulesEditionProvider } from "../../contexts/index.js";
 import { ConditionPicker } from "../condition-picker";

 afterEach(cleanup);
@@ -24,12 +25,14 @@ function renderPicker(
 	document.body.appendChild(anchor);
 	(anchorRef as { current: HTMLElement }).current = anchor;
 	const result = render(
-		<ConditionPicker
-			anchorRef={anchorRef}
-			activeConditions={overrides.activeConditions ?? []}
-			onToggle={onToggle}
-			onClose={onClose}
-		/>,
+		<RulesEditionProvider>
+			<ConditionPicker
+				anchorRef={anchorRef}
+				activeConditions={overrides.activeConditions ?? []}
+				onToggle={onToggle}
+				onClose={onClose}
+			/>
+		</RulesEditionProvider>,
 	);
 	return { ...result, onToggle, onClose };
 }
--- a/apps/web/src/components/action-bar.tsx
+++ b/apps/web/src/components/action-bar.tsx
@@ -6,10 +6,8 @@ import {
 	Import,
 	Library,
 	Minus,
-	Monitor,
-	Moon,
 	Plus,
-	Sun,
+	Settings,
 	Users,
 } from "lucide-react";
 import React, {
@@ -25,7 +23,6 @@ import { useEncounterContext } from "../contexts/encounter-context.js";
 import { useInitiativeRollsContext } from "../contexts/initiative-rolls-context.js";
 import { usePlayerCharactersContext } from "../contexts/player-characters-context.js";
 import { useSidePanelContext } from "../contexts/side-panel-context.js";
-import { useThemeContext } from "../contexts/theme-context.js";
 import { useLongPress } from "../hooks/use-long-press.js";
 import { cn } from "../lib/utils.js";
 import { D20Icon } from "./d20-icon.js";
@@ -44,6 +41,7 @@ interface ActionBarProps {
 	inputRef?: RefObject<HTMLInputElement | null>;
 	autoFocus?: boolean;
 	onManagePlayers?: () => void;
+	onOpenSettings?: () => void;
 }

 function creatureKey(r: SearchResult): string {
@@ -216,26 +214,13 @@ function AddModeSuggestions({
 	);
 }

-const THEME_ICONS = {
-	system: Monitor,
-	light: Sun,
-	dark: Moon,
-} as const;
-
-const THEME_LABELS = {
-	system: "Theme: System",
-	light: "Theme: Light",
-	dark: "Theme: Dark",
-} as const;
-
 function buildOverflowItems(opts: {
 	onManagePlayers?: () => void;
 	onOpenSourceManager?: () => void;
 	bestiaryLoaded: boolean;
 	onBulkImport?: () => void;
 	bulkImportDisabled?: boolean;
-	themePreference?: "system" | "light" | "dark";
-	onCycleTheme?: () => void;
+	onOpenSettings?: () => void;
 }): OverflowMenuItem[] {
 	const items: OverflowMenuItem[] = [];
 	if (opts.onManagePlayers) {
@@ -260,14 +245,11 @@ function buildOverflowItems(opts: {
 			disabled: opts.bulkImportDisabled,
 		});
 	}
-	if (opts.onCycleTheme) {
-		const pref = opts.themePreference ?? "system";
-		const ThemeIcon = THEME_ICONS[pref];
+	if (opts.onOpenSettings) {
 		items.push({
-			icon: <ThemeIcon className="h-4 w-4" />,
-			label: THEME_LABELS[pref],
-			onClick: opts.onCycleTheme,
-			keepOpen: true,
+			icon: <Settings className="h-4 w-4" />,
+			label: "Settings",
+			onClick: opts.onOpenSettings,
 		});
 	}
 	return items;
@@ -277,6 +259,7 @@ export function ActionBar({
 	inputRef,
 	autoFocus,
 	onManagePlayers,
+	onOpenSettings,
 }: Readonly<ActionBarProps>) {
 	const {
 		addCombatant,
@@ -290,7 +273,6 @@ export function ActionBar({
 	const { characters: playerCharacters } = usePlayerCharactersContext();
 	const { showBulkImport, showSourceManager, showCreature, panelView } =
 		useSidePanelContext();
-	const { preference: themePreference, cycleTheme } = useThemeContext();
 	const { handleRollAllInitiative } = useInitiativeRollsContext();
 	const { state: bulkImportState } = useBulkImportContext();

@@ -532,8 +514,7 @@ export function ActionBar({
 		bestiaryLoaded,
 		onBulkImport: showBulkImport,
 		bulkImportDisabled: bulkImportState.status === "loading",
-		themePreference,
-		onCycleTheme: cycleTheme,
+		onOpenSettings,
 	});

 	return (
--- a/apps/web/src/components/condition-picker.tsx
+++ b/apps/web/src/components/condition-picker.tsx
@@ -1,4 +1,8 @@
-import { CONDITION_DEFINITIONS, type ConditionId } from "@initiative/domain";
+import {
+	CONDITION_DEFINITIONS,
+	type ConditionId,
+	getConditionDescription,
+} from "@initiative/domain";
 import type { LucideIcon } from "lucide-react";
 import {
 	ArrowDown,
@@ -19,6 +23,7 @@ import {
 } from "lucide-react";
 import { useEffect, useLayoutEffect, useRef, useState } from "react";
 import { createPortal } from "react-dom";
+import { useRulesEditionContext } from "../contexts/rules-edition-context.js";
 import { cn } from "../lib/utils";
 import { Tooltip } from "./ui/tooltip.js";

@@ -104,6 +109,7 @@ export function ConditionPicker({
 		return () => document.removeEventListener("mousedown", handleClickOutside);
 	}, [onClose]);

+	const { edition } = useRulesEditionContext();
 	const active = new Set(activeConditions ?? []);

 	return createPortal(
@@ -122,7 +128,11 @@ export function ConditionPicker({
 				const isActive = active.has(def.id);
 				const colorClass = COLOR_CLASSES[def.color] ?? "text-muted-foreground";
 				return (
-					<Tooltip key={def.id} content={def.description} className="block">
+					<Tooltip
+						key={def.id}
+						content={getConditionDescription(def, edition)}
+						className="block"
+					>
 						<button
 							type="button"
 							className={cn(
--- a/apps/web/src/components/condition-tags.tsx
+++ b/apps/web/src/components/condition-tags.tsx
@@ -1,4 +1,8 @@
-import { CONDITION_DEFINITIONS, type ConditionId } from "@initiative/domain";
+import {
+	CONDITION_DEFINITIONS,
+	type ConditionId,
+	getConditionDescription,
+} from "@initiative/domain";
 import type { LucideIcon } from "lucide-react";
 import {
 	ArrowDown,
@@ -18,6 +22,7 @@ import {
 	Sparkles,
 	ZapOff,
 } from "lucide-react";
+import { useRulesEditionContext } from "../contexts/rules-edition-context.js";
 import { cn } from "../lib/utils.js";
 import { Tooltip } from "./ui/tooltip.js";

@@ -63,6 +68,7 @@ export function ConditionTags({
 	onRemove,
 	onOpenPicker,
 }: Readonly<ConditionTagsProps>) {
+	const { edition } = useRulesEditionContext();
 	return (
 		<div className="flex flex-wrap items-center gap-0.5">
 			{conditions?.map((condId) => {
@@ -72,7 +78,10 @@ export function ConditionTags({
 				if (!Icon) return null;
 				const colorClass = COLOR_CLASSES[def.color] ?? "text-muted-foreground";
 				return (
-					<Tooltip key={condId} content={`${def.label}: ${def.description}`}>
+					<Tooltip
+						key={condId}
+						content={`${def.label}:\n${getConditionDescription(def, edition)}`}
+					>
 						<button
 							type="button"
 							aria-label={`Remove ${def.label}`}
--- a/apps/web/src/components/settings-modal.tsx
+++ b/apps/web/src/components/settings-modal.tsx
@@ -0,0 +1,129 @@
+import type { RulesEdition } from "@initiative/domain";
+import { Monitor, Moon, Sun, X } from "lucide-react";
+import { useEffect, useRef } from "react";
+import { useRulesEditionContext } from "../contexts/rules-edition-context.js";
+import { useThemeContext } from "../contexts/theme-context.js";
+import { cn } from "../lib/utils.js";
+import { Button } from "./ui/button.js";
+
+interface SettingsModalProps {
+	open: boolean;
+	onClose: () => void;
+}
+
+const EDITION_OPTIONS: { value: RulesEdition; label: string }[] = [
+	{ value: "5e", label: "5e (2014)" },
+	{ value: "5.5e", label: "5.5e (2024)" },
+];
+
+const THEME_OPTIONS: {
+	value: "system" | "light" | "dark";
+	label: string;
+	icon: typeof Sun;
+}[] = [
+	{ value: "system", label: "System", icon: Monitor },
+	{ value: "light", label: "Light", icon: Sun },
+	{ value: "dark", label: "Dark", icon: Moon },
+];
+
+export function SettingsModal({ open, onClose }: Readonly<SettingsModalProps>) {
+	const dialogRef = useRef<HTMLDialogElement>(null);
+	const { edition, setEdition } = useRulesEditionContext();
+	const { preference, setPreference } = useThemeContext();
+
+	useEffect(() => {
+		const dialog = dialogRef.current;
+		if (!dialog) return;
+		if (open && !dialog.open) dialog.showModal();
+		else if (!open && dialog.open) dialog.close();
+	}, [open]);
+
+	useEffect(() => {
+		const dialog = dialogRef.current;
+		if (!dialog) return;
+		function handleCancel(e: Event) {
+			e.preventDefault();
+			onClose();
+		}
+		function handleBackdropClick(e: MouseEvent) {
+			if (e.target === dialog) onClose();
+		}
+		dialog.addEventListener("cancel", handleCancel);
+		dialog.addEventListener("mousedown", handleBackdropClick);
+		return () => {
+			dialog.removeEventListener("cancel", handleCancel);
+			dialog.removeEventListener("mousedown", handleBackdropClick);
+		};
+	}, [onClose]);
+
+	return (
+		<dialog
+			ref={dialogRef}
+			className="card-glow m-auto w-full max-w-sm rounded-lg border border-border bg-card p-6 backdrop:bg-black/50"
+		>
+			<div className="mb-4 flex items-center justify-between">
+				<h2 className="font-semibold text-foreground text-lg">Settings</h2>
+				<Button
+					variant="ghost"
+					size="icon"
+					onClick={onClose}
+					className="text-muted-foreground"
+				>
+					<X size={20} />
+				</Button>
+			</div>
+
+			<div className="flex flex-col gap-5">
+				<div>
+					<span className="mb-2 block font-medium text-muted-foreground text-sm">
+						Conditions
+					</span>
+					<div className="flex gap-1">
+						{EDITION_OPTIONS.map((opt) => (
+							<button
+								key={opt.value}
+								type="button"
+								className={cn(
+									"flex-1 rounded-md px-3 py-1.5 text-sm transition-colors",
+									edition === opt.value
+										? "bg-accent text-primary-foreground"
+										: "bg-card text-muted-foreground hover:bg-hover-neutral-bg hover:text-foreground",
+								)}
+								onClick={() => setEdition(opt.value)}
+							>
+								{opt.label}
+							</button>
+						))}
+					</div>
+				</div>
+
+				<div>
+					<span className="mb-2 block font-medium text-muted-foreground text-sm">
+						Theme
+					</span>
+					<div className="flex gap-1">
+						{THEME_OPTIONS.map((opt) => {
+							const Icon = opt.icon;
+							return (
+								<button
+									key={opt.value}
+									type="button"
+									className={cn(
+										"flex flex-1 items-center justify-center gap-1.5 rounded-md px-3 py-1.5 text-sm transition-colors",
+										preference === opt.value
+											? "bg-accent text-primary-foreground"
+											: "bg-card text-muted-foreground hover:bg-hover-neutral-bg hover:text-foreground",
+									)}
+									onClick={() => setPreference(opt.value)}
+								>
+									<Icon size={14} />
+									{opt.label}
+								</button>
+							);
+						})}
+					</div>
+				</div>
+			</div>
+		</dialog>
+	);
+}
--- a/apps/web/src/components/ui/tooltip.tsx
+++ b/apps/web/src/components/ui/tooltip.tsx
@@ -43,7 +43,7 @@ export function Tooltip({
 				createPortal(
 					<div
 						role="tooltip"
-						className="pointer-events-none fixed z-[60] max-w-64 -translate-x-1/2 -translate-y-full rounded-md border border-border bg-background px-2.5 py-1.5 text-foreground text-xs leading-snug shadow-lg"
+						className="pointer-events-none fixed z-[60] max-w-64 -translate-x-1/2 -translate-y-full whitespace-pre-line rounded-md border border-border bg-background px-2.5 py-1.5 text-foreground text-xs leading-snug shadow-lg"
 						style={{ top: pos.top, left: pos.left }}
 					>
 						{content}
--- a/apps/web/src/contexts/index.ts
+++ b/apps/web/src/contexts/index.ts
@@ -3,5 +3,6 @@ export { BulkImportProvider } from "./bulk-import-context.js";
 export { EncounterProvider } from "./encounter-context.js";
 export { InitiativeRollsProvider } from "./initiative-rolls-context.js";
 export { PlayerCharactersProvider } from "./player-characters-context.js";
+export { RulesEditionProvider } from "./rules-edition-context.js";
 export { SidePanelProvider } from "./side-panel-context.js";
 export { ThemeProvider } from "./theme-context.js";
--- a/apps/web/src/contexts/rules-edition-context.tsx
+++ b/apps/web/src/contexts/rules-edition-context.tsx
@@ -0,0 +1,24 @@
+import { createContext, type ReactNode, useContext } from "react";
+import { useRulesEdition } from "../hooks/use-rules-edition.js";
+
+type RulesEditionContextValue = ReturnType<typeof useRulesEdition>;
+
+const RulesEditionContext = createContext<RulesEditionContextValue | null>(
+	null,
+);
+
+export function RulesEditionProvider({ children }: { children: ReactNode }) {
+	const value = useRulesEdition();
+	return (
+		<RulesEditionContext.Provider value={value}>
+			{children}
+		</RulesEditionContext.Provider>
+	);
+}
+
+export function useRulesEditionContext(): RulesEditionContextValue {
+	const ctx = useContext(RulesEditionContext);
+	if (!ctx)
+		throw new Error("useRulesEditionContext requires RulesEditionProvider");
+	return ctx;
+}
--- a/apps/web/src/hooks/use-rules-edition.ts
+++ b/apps/web/src/hooks/use-rules-edition.ts
@@ -0,0 +1,52 @@
+import type { RulesEdition } from "@initiative/domain";
+import { useCallback, useSyncExternalStore } from "react";
+
+const STORAGE_KEY = "initiative:rules-edition";
+
+const listeners = new Set<() => void>();
+let currentEdition: RulesEdition = loadEdition();
+
+function loadEdition(): RulesEdition {
+	try {
+		const raw = localStorage.getItem(STORAGE_KEY);
+		if (raw === "5e" || raw === "5.5e") return raw;
+	} catch {
+		// storage unavailable
+	}
+	return "5.5e";
+}
+
+function saveEdition(edition: RulesEdition): void {
+	try {
+		localStorage.setItem(STORAGE_KEY, edition);
+	} catch {
+		// quota exceeded or storage unavailable
+	}
+}
+
+function notifyAll(): void {
+	for (const listener of listeners) {
+		listener();
+	}
+}
+
+function subscribe(callback: () => void): () => void {
+	listeners.add(callback);
+	return () => listeners.delete(callback);
+}
+
+function getSnapshot(): RulesEdition {
+	return currentEdition;
+}
+
+export function useRulesEdition() {
+	const edition = useSyncExternalStore(subscribe, getSnapshot);
+
+	const setEdition = useCallback((next: RulesEdition) => {
+		currentEdition = next;
+		saveEdition(next);
+		notifyAll();
+	}, []);
+
+	return { edition, setEdition } as const;
+}
--- a/apps/web/src/hooks/use-theme.ts
+++ b/apps/web/src/hooks/use-theme.ts
@@ -71,8 +71,6 @@ function getSnapshot(): ThemePreference {
 	return currentPreference;
 }

-const CYCLE: ThemePreference[] = ["system", "light", "dark"];
-
 export function useTheme() {
 	const preference = useSyncExternalStore(subscribe, getSnapshot);
 	const resolved = resolve(preference);
@@ -88,11 +86,5 @@ export function useTheme() {
 		notifyAll();
 	}, []);

-	const cycleTheme = useCallback(() => {
-		const idx = CYCLE.indexOf(currentPreference);
-		const next = CYCLE[(idx + 1) % CYCLE.length];
-		setPreference(next);
-	}, [setPreference]);
-
-	return { preference, resolved, setPreference, cycleTheme } as const;
+	return { preference, resolved, setPreference } as const;
 }
--- a/apps/web/src/main.tsx
+++ b/apps/web/src/main.tsx
@@ -7,6 +7,7 @@ import {
 	EncounterProvider,
 	InitiativeRollsProvider,
 	PlayerCharactersProvider,
+	RulesEditionProvider,
 	SidePanelProvider,
 	ThemeProvider,
 } from "./contexts/index.js";
@@ -17,19 +18,21 @@ if (root) {
 	createRoot(root).render(
 		<StrictMode>
 			<ThemeProvider>
-				<EncounterProvider>
-					<BestiaryProvider>
-						<PlayerCharactersProvider>
-							<BulkImportProvider>
-								<SidePanelProvider>
-									<InitiativeRollsProvider>
-										<App />
-									</InitiativeRollsProvider>
-								</SidePanelProvider>
-							</BulkImportProvider>
-						</PlayerCharactersProvider>
-					</BestiaryProvider>
-				</EncounterProvider>
+				<RulesEditionProvider>
+					<EncounterProvider>
+						<BestiaryProvider>
+							<PlayerCharactersProvider>
+								<BulkImportProvider>
+									<SidePanelProvider>
+										<InitiativeRollsProvider>
+											<App />
+										</InitiativeRollsProvider>
+									</SidePanelProvider>
+								</BulkImportProvider>
+							</PlayerCharactersProvider>
+						</BestiaryProvider>
+					</EncounterProvider>
+				</RulesEditionProvider>
 			</ThemeProvider>
 		</StrictMode>,
 	);
--- a/docs/agents/research/2026-03-24-rules-edition-settings-modal.md
+++ b/docs/agents/research/2026-03-24-rules-edition-settings-modal.md
@@ -0,0 +1,256 @@
+---
+date: "2026-03-24T10:22:04.341906+00:00"
+git_commit: cfd4aef724487a681e425cedfa08f3e89255f91a
+branch: main
+topic: "Rules edition setting for condition tooltips + settings modal"
+tags: [research, codebase, conditions, settings, theme, modal, issue-12]
+status: complete
+---
+
+# Research: Rules Edition Setting for Condition Tooltips + Settings Modal
+
+## Research Question
+
+Map the codebase for implementing issue #12: a rules edition setting (5e 2014 / 5.5e 2024) that controls condition tooltip descriptions, delivered via a new settings modal that also absorbs the existing theme toggle. Target spec: `specs/003-combatant-state/spec.md` (stories CC-3, CC-8, FR-095–FR-102).
+
+## Summary
+
+The implementation touches five areas: (1) the domain condition definitions, (2) the tooltip rendering in two web components, (3) the kebab overflow menu in the action bar, (4) the theme system (hook + context), and (5) a new settings modal following existing `<dialog>` patterns. The localStorage persistence pattern is well-established with a consistent `"initiative:<key>"` convention. The context provider tree in `main.tsx` is the integration point for a new settings context.
+
+## Detailed Findings
+
+### 1. Condition Definitions and Tooltip Data Flow
+
+**Domain layer** — `packages/domain/src/conditions.ts`
+
+The `ConditionDefinition` interface (line 18) carries a single `description: string` field. The `CONDITION_DEFINITIONS` array (line 26) holds all 15 conditions as `readonly` objects with `id`, `label`, `description`, `iconName`, and `color`. This is the single source of truth for condition data.
+
+Exported types: `ConditionId` (union of 15 string literals), `ConditionDefinition`, `CONDITION_DEFINITIONS`, `VALID_CONDITION_IDS`.
+
+**Web layer — condition-tags.tsx** (`apps/web/src/components/condition-tags.tsx`)
+
+- Line 69: Looks up definition via `CONDITION_DEFINITIONS.find((d) => d.id === condId)`
+- Line 75: Passes tooltip content as `` `${def.label}: ${def.description}` `` — combines label + description into a single string
+- This is the tooltip shown when hovering active condition icons in the combatant row
+
+**Web layer — condition-picker.tsx** (`apps/web/src/components/condition-picker.tsx`)
+
+- Line 119: Iterates `CONDITION_DEFINITIONS.map(...)` directly
+- Line 125: Passes `content={def.description}` to Tooltip — description only, no label prefix
+- This is the tooltip shown when hovering conditions in the dropdown picker
+
+**Key observation:** Both components read `def.description` directly from the imported domain constant. To make descriptions edition-aware, either (a) the domain type needs dual descriptions and consumers select by edition, or (b) a higher-level hook resolves the correct description before passing to components.
+
+### 2. Tooltip Component
+
+**File:** `apps/web/src/components/ui/tooltip.tsx`
+
+- Props: `content: string`, `children: ReactNode`, optional `className`
+- Positioning: Uses `getBoundingClientRect()` to place tooltip 4px above the trigger element, centered horizontally
+- Rendered via `createPortal` to `document.body` at z-index 60
+- Max width: `max-w-64` (256px / 16rem) with `text-xs leading-snug`
+- Text wraps naturally within the max-width constraint — no explicit truncation
+- The tooltip accepts only `string` content, not ReactNode
+
+The current descriptions are short (1-2 sentences). The 5e (2014) exhaustion description will be longer (6-level table as text), which may benefit from the existing 256px wrapping. No changes to the tooltip component itself should be needed.
+
+### 3. Kebab Menu (Overflow Menu)
+
+**OverflowMenu component** — `apps/web/src/components/ui/overflow-menu.tsx`
+
+- Generic menu component accepting `items: readonly OverflowMenuItem[]`
+- Each item has: `icon: ReactNode`, `label: string`, `onClick: () => void`, optional `disabled` and `keepOpen`
+- Opens upward (`bottom-full`) from the kebab button, right-aligned
+- Close on click-outside (mousedown) and Escape key
+
+**ActionBar integration** — `apps/web/src/components/action-bar.tsx`
+
+- `buildOverflowItems()` function (line 231) constructs the menu items array
+- Current items in order:
+  1. **Player Characters** (Users icon) — calls `opts.onManagePlayers`
+  2. **Manage Sources** (Library icon) — calls `opts.onOpenSourceManager`
+  3. **Import All Sources** (Import icon) — conditional on bestiary loaded
+  4. **Theme cycle** (Monitor/Sun/Moon icon) — calls `opts.onCycleTheme`, uses `keepOpen: true`
+- Theme constants at lines 219-229: `THEME_ICONS` and `THEME_LABELS` maps
+- Line 293: `useThemeContext()` provides `preference` and `cycleTheme`
+- Line 529-537: Overflow items built with all options passed in
+
+**To add a "Settings" item:** Add a new entry to `buildOverflowItems()` and remove the theme cycle entry. The new item would call a callback to open the settings modal.
+
+### 4. Theme System
+
+**Hook** — `apps/web/src/hooks/use-theme.ts`
+
+- Module-level state: `currentPreference` initialized from localStorage on import (line 9)
+- `ThemePreference` type: `"system" | "light" | "dark"`
+- `ResolvedTheme` type: `"light" | "dark"`
+- Storage key: `"initiative:theme"` (line 6)
+- `loadPreference()` — reads localStorage, defaults to `"system"` (lines 11-19)
+- `savePreference()` — writes to localStorage, silent on error (lines 21-27)
+- `resolve()` — resolves "system" via `matchMedia("(prefers-color-scheme: light)")` (lines 29-38)
+- `applyTheme()` — sets `document.documentElement.dataset.theme` (lines 40-42)
+- Uses `useSyncExternalStore` for React integration (line 77)
+- Exposes: `preference`, `resolved`, `setPreference`, `cycleTheme`
+- OS preference change listener updates theme when preference is "system" (lines 54-63)
+
+**Context** — `apps/web/src/contexts/theme-context.tsx`
+
+- Simple wrapper: `ThemeProvider` calls `useTheme()` and provides via React context
+- `useThemeContext()` hook for consumers (line 15)
+
+**For settings modal:** The theme system already exposes `setPreference(pref)` which is exactly what the settings modal needs — direct selection instead of cycling.
+
+### 5. localStorage Persistence Patterns
+
+All storage follows a consistent pattern:
+
+| Key | Content | Format |
+|-----|---------|--------|
+| `initiative:encounter` | Full encounter state | JSON object |
+| `initiative:player-characters` | Player character array | JSON array |
+| `initiative:theme` | Theme preference | Plain string |
+
+**Common patterns:**
+- Read: `try { localStorage.getItem(key) } catch { return default }`
+- Write: `try { localStorage.setItem(key, value) } catch { /* silent */ }`
+- Validation on read: type-check, range-check, reject invalid, return fallback
+- Bootstrap: `useState(initializeFunction)` where initializer loads from storage
+- Persistence: `useEffect([data], () => saveToStorage(data))`
+
+**For rules edition:** Key would be `"initiative:rules-edition"`. Value would be a plain string (`"5e"` or `"5.5e"`), matching the theme pattern (simple string, not JSON). Default: `"5.5e"`.
+
+### 6. Modal Patterns
+
+Two modal implementations exist, both using HTML `<dialog>`:
+
+**PlayerManagement** (`apps/web/src/components/player-management.tsx`)
+- Controlled by `open` prop
+- `useEffect` calls `dialog.showModal()` / `dialog.close()` based on `open`
+- Cancel event (Escape) prevented and routed to `onClose`
+- Backdrop click (mousedown on dialog element itself) routes to `onClose`
+- Styling: `card-glow m-auto w-full max-w-md rounded-lg border border-border bg-card p-6 backdrop:bg-black/50`
+- Header: title + X close button (ghost variant, muted foreground)
+
+**CreatePlayerModal** (`apps/web/src/components/create-player-modal.tsx`)
+- Same `<dialog>` pattern with identical open/close/cancel/backdrop handling
+- Has form submission with validation and error display
+- Same styling as PlayerManagement
+
+**Shared dialog pattern (extract from both):**
+```tsx
+const dialogRef = useRef<HTMLDialogElement>(null);
+
+useEffect(() => {
+  const dialog = dialogRef.current;
+  if (!dialog) return;
+  if (open && !dialog.open) dialog.showModal();
+  else if (!open && dialog.open) dialog.close();
+}, [open]);
+
+useEffect(() => {
+  const dialog = dialogRef.current;
+  if (!dialog) return;
+  const handleCancel = (e: Event) => { e.preventDefault(); onClose(); };
+  const handleBackdropClick = (e: MouseEvent) => { if (e.target === dialog) onClose(); };
+  dialog.addEventListener("cancel", handleCancel);
+  dialog.addEventListener("mousedown", handleBackdropClick);
+  return () => { /* cleanup */ };
+}, [onClose]);
+```
+
+### 7. Context Provider Tree
+
+**File:** `apps/web/src/main.tsx`
+
+Provider nesting order (outermost first):
+1. `ThemeProvider`
+2. `EncounterProvider`
+3. `BestiaryProvider`
+4. `PlayerCharactersProvider`
+5. `BulkImportProvider`
+6. `SidePanelProvider`
+7. `InitiativeRollsProvider`
+
+A new `SettingsProvider` (or `RulesEditionProvider`) would slot in early — before any component that reads condition descriptions. Since `ThemeProvider` is already the outermost, and the settings modal manages both theme and rules edition, one option is a `SettingsProvider` that wraps or replaces `ThemeProvider`.
+
+### 8. 5e vs 5.5e Condition Text Differences
+
+Based on research, here are the conditions with meaningful mechanical differences between editions. Conditions not listed are functionally identical across editions.
+
+**Major changes:**
+
+| Condition | 5e (2014) | 5.5e (2024) — current text |
+|---|---|---|
+| **Exhaustion** | 6 escalating levels: L1 disadvantage on ability checks, L2 speed halved, L3 disadvantage on attacks/saves, L4 HP max halved, L5 speed 0, L6 death | −level from d20 tests and spell save DCs. Speed reduced by 5 ft. × level. Death at 10 levels. (current) |
+| **Grappled** | Speed 0. Ends if grappler incapacitated or moved out of reach. | Speed 0, can't benefit from speed bonuses. Ends if grappler incapacitated or moved out of reach. (current — but 2024 also adds disadvantage on attacks vs non-grappler) |
+| **Invisible** | Can't be seen without magic/special sense. Heavily obscured. Advantage on attacks; disadvantage on attacks against. | 2024 broadened: can be gained from Hide action; grants Surprise (advantage on initiative), Concealed (unaffected by sight effects), attacks advantage/disadvantage. (current text is closer to 2014) |
+| **Stunned** | Incapacitated. Can't move. Speak falteringly. Auto-fail Str/Dex saves. Attacks against have advantage. | 2024: same but can still move (controversial). (current text says "Can't move" — matches 2014) |
+
+**Moderate changes:**
+
+| Condition | 5e (2014) | 5.5e (2024) |
+|---|---|---|
+| **Incapacitated** | Can't take actions or reactions. | Can't take actions, bonus actions, or reactions. Speed 0. Auto-fail Str/Dex saves. Attacks against have advantage. Concentration broken. (current is partial 2024) |
+| **Petrified** | Unaware of surroundings. | Aware of surroundings (2024 change). Current text doesn't mention awareness. |
+| **Poisoned** | Disadvantage on attacks and ability checks. | Same, but 2024 consolidates disease into poisoned. |
+
+**Minor/identical:**
+
+Blinded, Charmed ("harmful" → "damaging"), Deafened, Frightened, Paralyzed, Prone, Restrained, Unconscious — functionally identical between editions.
+
+**Note on current descriptions:** The existing `conditions.ts` descriptions are a mix — exhaustion is clearly 2024, but stunned says "Can't move" which matches 2014. A full audit of each description against both editions will be needed during implementation to ensure accuracy.
+
+## Code References
+
+- `packages/domain/src/conditions.ts:18-24` — `ConditionDefinition` interface (single `description` field)
+- `packages/domain/src/conditions.ts:26-145` — `CONDITION_DEFINITIONS` array with current (mixed edition) descriptions
+- `apps/web/src/components/condition-tags.tsx:75` — Tooltip with `${def.label}: ${def.description}`
+- `apps/web/src/components/condition-picker.tsx:125` — Tooltip with `def.description`
+- `apps/web/src/components/ui/tooltip.tsx:1-55` — Tooltip component (string content, 256px max-width)
+- `apps/web/src/components/ui/overflow-menu.tsx:1-73` — Generic overflow menu
+- `apps/web/src/components/action-bar.tsx:231-274` — `buildOverflowItems()` (current menu items)
+- `apps/web/src/components/action-bar.tsx:293` — `useThemeContext()` usage in ActionBar
+- `apps/web/src/hooks/use-theme.ts:1-98` — Theme hook with localStorage, `useSyncExternalStore`, cycle/set
+- `apps/web/src/contexts/theme-context.tsx:1-19` — Theme context provider
+- `apps/web/src/main.tsx:17-35` — Provider nesting order
+- `apps/web/src/components/player-management.tsx:55-131` — `<dialog>` modal pattern (reference for settings modal)
+- `apps/web/src/components/create-player-modal.tsx:106-191` — Form-based `<dialog>` modal pattern
+- `apps/web/src/persistence/encounter-storage.ts` — localStorage persistence pattern (read/write/validate)
+- `apps/web/src/persistence/player-character-storage.ts` — localStorage persistence pattern
+
+## Architecture Documentation
+
+### Data Flow: Condition Description → Tooltip
+
+```
+Domain: CONDITION_DEFINITIONS[].description (single string)
+  ↓ imported by
+Web: condition-tags.tsx → Tooltip content={`${label}: ${description}`}
+Web: condition-picker.tsx → Tooltip content={description}
+  ↓ rendered by
+UI: tooltip.tsx → createPortal → fixed-position div (max-w-64)
+```
+
+### Settings/Preference Architecture
+
+```
+localStorage → use-theme.ts (useSyncExternalStore) → theme-context.tsx → consumers
+localStorage → encounter-storage.ts → use-encounter.ts (useState) → encounter-context.tsx
+localStorage → player-character-storage.ts → use-player-characters.ts (useState) → pc-context.tsx
+```
+
+### Modal Triggering Pattern
+
+```
+ActionBar overflow menu item click
+  → callback prop (e.g., onManagePlayers)
+  → App.tsx calls imperative handle (e.g., playerCharacterRef.current.openManagement())
+  → Section component sets open state
+  → <dialog>.showModal() via useEffect
+```
+
+## Open Questions
+
+1. **Current description accuracy:** The existing descriptions are a mix of 2014 and 2024 text (e.g., exhaustion is 2024, stunned "Can't move" is 2014). Both sets of descriptions need careful authoring against official sources during implementation.
+2. **Domain type change:** Should `ConditionDefinition` carry `description5e` and `description55e` fields, or should description resolution happen at the application/web layer? The domain-level approach is simpler and keeps the data co-located with condition definitions.
+3. **Settings context scope:** Should a new `SettingsProvider` manage both rules edition and theme, or should rules edition be its own context? The theme system already has its own well-structured hook/context; combining them may add unnecessary coupling.
--- a/packages/domain/src/tests/conditions.test.ts
+++ b/packages/domain/src/tests/conditions.test.ts
@@ -0,0 +1,44 @@
+import { describe, expect, it } from "vitest";
+import {
+	CONDITION_DEFINITIONS,
+	getConditionDescription,
+} from "../conditions.js";
+
+function findCondition(id: string) {
+	const def = CONDITION_DEFINITIONS.find((d) => d.id === id);
+	if (!def) throw new Error(`Condition ${id} not found`);
+	return def;
+}
+
+describe("getConditionDescription", () => {
+	it("returns 5.5e description by default", () => {
+		const exhaustion = findCondition("exhaustion");
+		expect(getConditionDescription(exhaustion, "5.5e")).toBe(
+			exhaustion.description,
+		);
+	});
+
+	it("returns 5e description when edition is 5e", () => {
+		const exhaustion = findCondition("exhaustion");
+		expect(getConditionDescription(exhaustion, "5e")).toBe(
+			exhaustion.description5e,
+		);
+	});
+
+	it("every condition has both descriptions", () => {
+		for (const def of CONDITION_DEFINITIONS) {
+			expect(def.description).toBeTruthy();
+			expect(def.description5e).toBeTruthy();
+		}
+	});
+
+	it("conditions with identical rules share the same text", () => {
+		const blinded = findCondition("blinded");
+		expect(blinded.description).toBe(blinded.description5e);
+	});
+
+	it("conditions with different rules have different text", () => {
+		const exhaustion = findCondition("exhaustion");
+		expect(exhaustion.description).not.toBe(exhaustion.description5e);
+	});
+});
--- a/packages/domain/src/conditions.ts
+++ b/packages/domain/src/conditions.ts
@@ -15,20 +15,32 @@ export type ConditionId =
 	| "stunned"
 	| "unconscious";

+export type RulesEdition = "5e" | "5.5e";
+
 export interface ConditionDefinition {
 	readonly id: ConditionId;
 	readonly label: string;
 	readonly description: string;
+	readonly description5e: string;
 	readonly iconName: string;
 	readonly color: string;
 }

+export function getConditionDescription(
+	def: ConditionDefinition,
+	edition: RulesEdition,
+): string {
+	return edition === "5e" ? def.description5e : def.description;
+}
+
 export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 	{
 		id: "blinded",
 		label: "Blinded",
 		description:
 			"Can't see. Auto-fail sight checks. Attacks have Disadvantage; attacks against have Advantage.",
+		description5e:
+			"Can't see. Auto-fail sight checks. Attacks have Disadvantage; attacks against have Advantage.",
 		iconName: "EyeOff",
 		color: "neutral",
 	},
@@ -37,6 +49,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		label: "Charmed",
 		description:
 			"Can't attack or target the charmer with harmful abilities. Charmer has Advantage on social checks.",
+		description5e:
+			"Can't attack or target the charmer with harmful abilities. Charmer has Advantage on social checks.",
 		iconName: "Heart",
 		color: "pink",
 	},
@@ -44,6 +58,7 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "deafened",
 		label: "Deafened",
 		description: "Can't hear. Auto-fail hearing checks.",
+		description5e: "Can't hear. Auto-fail hearing checks.",
 		iconName: "EarOff",
 		color: "neutral",
 	},
@@ -51,7 +66,9 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "exhaustion",
 		label: "Exhaustion",
 		description:
-			"Subtract exhaustion level from D20 Tests and Spell save DCs. Speed reduced by 5 ft. \u00D7 level. Removed by long rest (1 level) or death at 10 levels.",
+			"D20 Tests reduced by 2 \u00D7 exhaustion level.\nSpeed reduced by 5 ft. \u00D7 level.\nLong rest removes 1 level.\nDeath at 6 levels.",
+		description5e:
+			"L1: Disadvantage on ability checks\nL2: Speed halved\nL3: Disadvantage on attacks and saves\nL4: HP max halved\nL5: Speed 0\nL6: Death\nLong rest removes 1 level.",
 		iconName: "BatteryLow",
 		color: "amber",
 	},
@@ -60,6 +77,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		label: "Frightened",
 		description:
 			"Disadvantage on ability checks and attacks while source of fear is in line of sight. Can't willingly move closer to the source.",
+		description5e:
+			"Disadvantage on ability checks and attacks while source of fear is in line of sight. Can't willingly move closer to the source.",
 		iconName: "Siren",
 		color: "orange",
 	},
@@ -67,7 +86,9 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "grappled",
 		label: "Grappled",
 		description:
-			"Speed is 0 and can't benefit from bonuses to speed. Ends if grappler is Incapacitated or moved out of reach.",
+			"Speed 0. Disadvantage on attacks against targets other than the grappler. Grappler can drag you (extra movement cost). Ends if grappler is Incapacitated or you leave their reach.",
+		description5e:
+			"Speed 0. Ends if grappler is Incapacitated or moved out of reach.",
 		iconName: "Hand",
 		color: "neutral",
 	},
@@ -75,7 +96,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "incapacitated",
 		label: "Incapacitated",
 		description:
-			"Can't take Actions, Bonus Actions, or Reactions. Concentration is broken.",
+			"Can't take Actions, Bonus Actions, or Reactions. Can't speak. Concentration is broken. Disadvantage on Initiative.",
+		description5e: "Can't take Actions or Reactions.",
 		iconName: "Ban",
 		color: "gray",
 	},
@@ -83,6 +105,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "invisible",
 		label: "Invisible",
 		description:
+			"Can't be seen. Advantage on Initiative. Not affected by effects requiring sight (unless caster sees you). Attacks have Advantage; attacks against have Disadvantage.",
+		description5e:
 			"Impossible to see without magic or special sense. Heavily Obscured. Attacks have Advantage; attacks against have Disadvantage.",
 		iconName: "Ghost",
 		color: "violet",
@@ -92,6 +116,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		label: "Paralyzed",
 		description:
 			"Incapacitated. Can't move or speak. Auto-fail Str/Dex saves. Attacks against have Advantage. Hits within 5 ft. are critical.",
+		description5e:
+			"Incapacitated. Can't move or speak. Auto-fail Str/Dex saves. Attacks against have Advantage. Hits within 5 ft. are critical.",
 		iconName: "ZapOff",
 		color: "yellow",
 	},
@@ -100,6 +126,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		label: "Petrified",
 		description:
 			"Turned to stone. Weight \u00D710. Incapacitated. Can't move or speak. Attacks against have Advantage. Auto-fail Str/Dex saves. Resistant to all damage. Immune to poison and disease.",
+		description5e:
+			"Turned to stone. Weight \u00D710. Incapacitated. Can't move or speak. Attacks against have Advantage. Auto-fail Str/Dex saves. Resistant to all damage. Immune to poison and disease.",
 		iconName: "Gem",
 		color: "slate",
 	},
@@ -107,6 +135,7 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "poisoned",
 		label: "Poisoned",
 		description: "Disadvantage on attack rolls and ability checks.",
+		description5e: "Disadvantage on attack rolls and ability checks.",
 		iconName: "Droplet",
 		color: "green",
 	},
@@ -115,6 +144,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		label: "Prone",
 		description:
 			"Can only crawl (costs extra movement). Disadvantage on attacks. Attacks within 5 ft. have Advantage; ranged attacks have Disadvantage. Standing up costs half movement.",
+		description5e:
+			"Can only crawl (costs extra movement). Disadvantage on attacks. Attacks within 5 ft. have Advantage; ranged attacks have Disadvantage. Standing up costs half movement.",
 		iconName: "ArrowDown",
 		color: "neutral",
 	},
@@ -123,6 +154,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		label: "Restrained",
 		description:
 			"Speed is 0. Attacks have Disadvantage. Attacks against have Advantage. Disadvantage on Dex saves.",
+		description5e:
+			"Speed is 0. Attacks have Disadvantage. Attacks against have Advantage. Disadvantage on Dex saves.",
 		iconName: "Link",
 		color: "neutral",
 	},
@@ -130,6 +163,8 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "stunned",
 		label: "Stunned",
 		description:
+			"Incapacitated (can't act or speak). Auto-fail Str/Dex saves. Attacks against have Advantage.",
+		description5e:
 			"Incapacitated. Can't move. Can speak only falteringly. Auto-fail Str/Dex saves. Attacks against have Advantage.",
 		iconName: "Sparkles",
 		color: "yellow",
@@ -138,7 +173,9 @@ export const CONDITION_DEFINITIONS: readonly ConditionDefinition[] = [
 		id: "unconscious",
 		label: "Unconscious",
 		description:
-			"Incapacitated. Can't move or speak. Unaware of surroundings. Drops held items, falls Prone. Auto-fail Str/Dex saves. Attacks against have Advantage. Hits within 5 ft. are critical.",
+			"Incapacitated. Speed 0. Can't move or speak. Unaware of surroundings. Drops held items, falls Prone. Auto-fail Str/Dex saves. Attacks against have Advantage. Hits within 5 ft. are critical.",
+		description5e:
+			"Incapacitated. Speed 0. Can't move or speak. Unaware of surroundings. Drops held items, falls Prone. Auto-fail Str/Dex saves. Attacks against have Advantage. Hits within 5 ft. are critical.",
 		iconName: "Moon",
 		color: "indigo",
 	},
--- a/packages/domain/src/index.ts
+++ b/packages/domain/src/index.ts
@@ -10,6 +10,8 @@ export {
 	CONDITION_DEFINITIONS,
 	type ConditionDefinition,
 	type ConditionId,
+	getConditionDescription,
+	type RulesEdition,
 	VALID_CONDITION_IDS,
 } from "./conditions.js";
 export {
--- a/specs/003-combatant-state/spec.md
+++ b/specs/003-combatant-state/spec.md
@@ -229,12 +229,13 @@ Acceptance scenarios:
 2. **Given** the condition picker is open, **When** the user clicks an active condition, **Then** it is toggled off and removed from the row.
 3. **Given** a combatant with one condition and it is removed, **Then** only the hover-revealed "+" button remains.

-**Story CC-3 — View Condition Name via Tooltip (P2)**
-As a DM, I want to hover over a condition icon to see its name so I can identify conditions without memorizing icons.
+**Story CC-3 — View Condition Details via Tooltip (P2)**
+As a DM, I want to hover over a condition icon to see its name and rules description so I can quickly reference the condition's effects during play.

 Acceptance scenarios:
-1. **Given** a combatant has an active condition, **When** the user hovers over its icon, **Then** a tooltip shows the condition name (e.g., "Blinded").
+1. **Given** a combatant has an active condition, **When** the user hovers over its icon, **Then** a tooltip shows the condition name and its rules description matching the selected edition.
 2. **Given** the user moves the cursor away from the icon, **Then** the tooltip disappears.
+3. **Given** the rules edition is set to 5e (2014), **When** the user hovers over "Exhaustion", **Then** the tooltip shows the 2014 exhaustion rules (6-level escalating table). **When** the edition is 5.5e (2024), **Then** the tooltip shows the 2024 rules (−2 per level to d20 tests, −5 ft speed per level).

 **Story CC-4 — Multiple Conditions (P2)**
 As a DM, I want to apply multiple conditions to a single combatant so I can track complex combat situations.
@@ -272,9 +273,21 @@ Acceptance scenarios:
 3. **Given** a combatant is NOT concentrating, **When** damage is taken, **Then** no pulse/flash occurs.
 4. **Given** a concentrating combatant takes damage, **When** the animation completes, **Then** the row returns to its normal concentration-active appearance.

+**Story CC-8 — Rules Edition Setting (P2)**
+As a DM who plays in both 5e (2014) and 5.5e (2024) groups, I want to choose which edition's condition descriptions appear in tooltips so I reference the correct rules for the game I am running.
+
+Acceptance scenarios:
+1. **Given** the user opens the kebab menu, **When** they click "Settings", **Then** a settings modal opens.
+2. **Given** the settings modal is open, **When** viewing the Conditions section, **Then** a rules edition selector shows 5e (2014) and 5.5e (2024) with 5.5e selected by default.
+3. **Given** the user selects 5e (2014), **When** hovering a condition icon (e.g., Exhaustion), **Then** the tooltip shows the 2014 description.
+4. **Given** the user selects 5.5e (2024), **When** hovering the same condition, **Then** the tooltip shows the 2024 description.
+5. **Given** the user changes the edition and reloads the page, **Then** the selected edition is preserved.
+6. **Given** a condition with identical rules across editions (e.g., Deafened), **Then** the tooltip text is the same regardless of setting.
+7. **Given** the settings modal is open, **When** viewing the Theme section, **Then** a System / Light / Dark selector is available, replacing the inline cycle button in the kebab menu.
+
 ### Requirements

- **FR-032**: The MVP MUST support the following 15 standard D&D 5e conditions: blinded, charmed, deafened, exhaustion, frightened, grappled, incapacitated, invisible, paralyzed, petrified, poisoned, prone, restrained, stunned, unconscious.
+- **FR-032**: The MVP MUST support the following 15 standard D&D 5e/5.5e conditions: blinded, charmed, deafened, exhaustion, frightened, grappled, incapacitated, invisible, paralyzed, petrified, poisoned, prone, restrained, stunned, unconscious.
 - **FR-033**: Each condition MUST have a fixed icon and color mapping (Lucide icons; no emoji):

  | Condition     | Icon       | Color   |
@@ -301,7 +314,7 @@ Acceptance scenarios:
 - **FR-037**: Clicking "+" MUST open the compact condition picker showing all conditions as icon + label pairs.
 - **FR-038**: Clicking a condition in the picker MUST toggle it on or off.
 - **FR-039**: Clicking an active condition icon tag in the row MUST remove that condition.
- **FR-040**: Hovering an active condition icon MUST show a tooltip with the condition name.
+- **FR-040**: Hovering an active condition icon MUST show a tooltip with the condition name and its rules description for the selected edition.
 - **FR-041**: Condition icons MUST NOT increase the row's width; row height MAY increase to accommodate wrapping.
 - **FR-042**: The condition picker MUST close when the user clicks outside of it.
 - **FR-043**: Conditions MUST persist as part of combatant state (surviving page reload).
@@ -327,6 +340,9 @@ Acceptance scenarios:
 - When concentration is toggled during an active pulse animation, the animation cancels and the new state applies immediately.
 - Multiple combatants may concentrate simultaneously; concentration is independent per combatant.
 - Conditions have no mechanical effects in the MVP baseline (no auto-disadvantage, no automation).
+- When the rules edition preference is missing from localStorage, the system defaults to 5.5e (2024).
+- Changing the edition while a condition tooltip is visible updates the tooltip on next hover (no live update required).
+- The settings modal is app-level UI; it does not interact with encounter state.

 ---

@@ -472,6 +488,14 @@ Acceptance scenarios:
 - **FR-092**: The "Initiative Tracker" heading MUST be removed to maximize vertical space for combatants.
 - **FR-093**: All interactive elements in the row MUST remain keyboard-accessible (focusable and operable via keyboard).
 - **FR-094**: On touch devices, hover-only controls ("+" button, "x" button) MUST remain accessible via tap or focus.
+- **FR-095**: The system MUST provide a settings modal accessible via a "Settings" item in the kebab overflow menu.
+- **FR-096**: The settings modal MUST include a Conditions section with a rules edition selector offering two options: 5e (2014) and 5.5e (2024).
+- **FR-097**: The default rules edition MUST be 5.5e (2024).
+- **FR-098**: Each condition definition MUST carry a description for both editions. Conditions with identical rules across editions MAY share a single description value.
+- **FR-099**: Condition tooltips MUST display the description corresponding to the active rules edition preference.
+- **FR-100**: The rules edition preference MUST persist across sessions via localStorage (key `"initiative:rules-edition"`).
+- **FR-101**: The settings modal MUST include a Theme section with System / Light / Dark options, replacing the inline theme cycle button in the kebab menu.
+- **FR-102**: The settings modal MUST close on Escape, click-outside, or the close button.

 ### Edge Cases

@@ -515,3 +539,6 @@ Acceptance scenarios:
 - **SC-028**: The AC number is visually identifiable as armor class through the shield shape alone.
 - **SC-029**: No layout shift occurs when hovering/unhovering rows.
 - **SC-030**: All HP, AC, initiative, condition, and concentration interactions remain fully operable using only a keyboard.
+- **SC-031**: The user can switch rules edition in 2 interactions (open settings → select edition).
+- **SC-032**: Condition tooltips accurately reflect the selected edition's rules text for all conditions that differ between editions.
+- **SC-033**: The rules edition preference survives a full page reload.