Improve empty encounter UX with interactive add button

Replace the static "No combatants yet" text with a centered, breathing
"+" icon that focuses the action bar input on click, guiding users to
add their first combatant.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/App.tsx

@@ -3,6 +3,7 @@ import {
 	rollInitiativeUseCase,
 } from "@initiative/application";
 import type { CombatantId, Creature, CreatureId } from "@initiative/domain";
+import { Plus } from "lucide-react";
 import { useCallback, useEffect, useRef, useState } from "react";
 import { ActionBar } from "./components/action-bar";
 import { CombatantRow } from "./components/combatant-row";
@@ -160,6 +161,8 @@ export function App() {
 		setPinnedCreatureId(null);
 	}, []);
 
+	const actionBarInputRef = useRef<HTMLInputElement>(null);
+
 	// Auto-scroll to the active combatant when the turn changes
 	const activeRowRef = useRef<HTMLDivElement>(null);
 	useEffect(() => {
@@ -205,11 +208,17 @@ export function App() {
 
 				{/* Scrollable area — combatant list */}
 				<div className="flex-1 overflow-y-auto min-h-0">
-					<div className="flex flex-col px-2 py-2">
+					<div
+						className={`flex flex-col px-2 py-2${encounter.combatants.length === 0 ? " h-full items-center justify-center" : ""}`}
+					>
 						{encounter.combatants.length === 0 ? (
-							<p className="py-12 text-center text-sm text-muted-foreground">
+							<button
-								No combatants yet — add one to get started
+								type="button"
-							</p>
+								onClick={() => actionBarInputRef.current?.focus()}
+								className="animate-breathe cursor-pointer text-muted-foreground transition-colors hover:text-primary"
+							>
+								<Plus className="size-14" />
+							</button>
 						) : (
 							encounter.combatants.map((c, i) => (
 								<CombatantRow
@@ -249,6 +258,7 @@ export function App() {
 						onViewStatBlock={handleViewStatBlock}
 						onBulkImport={handleBulkImport}
 						bulkImportDisabled={bulkImport.state.status === "loading"}
+						inputRef={actionBarInputRef}
 					/>
 				</div>
 			</div>

apps/web/src/components/action-bar.tsx

@@ -1,5 +1,11 @@
 import { Check, Eye, Import, Minus, Plus } from "lucide-react";
-import { type FormEvent, useEffect, useRef, useState } from "react";
+import {
+	type FormEvent,
+	type RefObject,
+	useEffect,
+	useRef,
+	useState,
+} from "react";
 import type { SearchResult } from "../hooks/use-bestiary.js";
 import { Button } from "./ui/button.js";
 import { Input } from "./ui/input.js";
@@ -20,6 +26,7 @@ interface ActionBarProps {
 	onViewStatBlock?: (result: SearchResult) => void;
 	onBulkImport?: () => void;
 	bulkImportDisabled?: boolean;
+	inputRef?: RefObject<HTMLInputElement | null>;
 }
 
 function creatureKey(r: SearchResult): string {
@@ -34,6 +41,7 @@ export function ActionBar({
 	onViewStatBlock,
 	onBulkImport,
 	bulkImportDisabled,
+	inputRef,
 }: ActionBarProps) {
 	const [nameInput, setNameInput] = useState("");
 	const [suggestions, setSuggestions] = useState<SearchResult[]>([]);
@@ -222,6 +230,7 @@ export function ActionBar({
 			>
 				<div className="relative flex-1">
 					<Input
+						ref={inputRef}
 						type="text"
 						value={nameInput}
 						onChange={(e) => handleNameChange(e.target.value)}

apps/web/src/index.css

@@ -80,6 +80,22 @@
 	}
 }
 
+@keyframes breathe {
+	0%,
+	100% {
+		opacity: 0.4;
+		scale: 0.9;
+	}
+	50% {
+		opacity: 1;
+		scale: 1.1;
+	}
+}
+
+@utility animate-breathe {
+	animation: breathe 3s ease-in-out infinite;
+}
+
 @custom-variant pointer-coarse (@media (pointer: coarse));
 
 @utility animate-confirm-pulse {