Declutter action bars: overflow menu, browse toggle, conditional D20

Top bar stripped to turn navigation only (Prev, round badge, Clear, Next).
Roll All Initiative, Manage Sources, and Bulk Import moved to a new
overflow menu in the bottom bar. Player Characters also moved there.

Browse stat blocks is now an Eye/EyeOff toggle inside the search input
that switches between add mode and browse mode. Add button only appears
when entering a custom creature name. Roll All Initiative button shows
conditionally — only when bestiary creatures lack initiative values.

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

apps/web/src/components/turn-navigation.tsx

@@ -1,6 +1,5 @@
 import type { Encounter } from "@initiative/domain";
-import { Library, StepBack, StepForward, Trash2 } from "lucide-react";
-import { D20Icon } from "./d20-icon";
+import { StepBack, StepForward, Trash2 } from "lucide-react";
 import { Button } from "./ui/button";
 import { ConfirmButton } from "./ui/confirm-button";
 
@@ -9,8 +8,6 @@ interface TurnNavigationProps {
 	onAdvanceTurn: () => void;
 	onRetreatTurn: () => void;
 	onClearEncounter: () => void;
-	onRollAllInitiative: () => void;
-	onOpenSourceManager: () => void;
 }
 
 export function TurnNavigation({
@@ -18,8 +15,6 @@ export function TurnNavigation({
 	onAdvanceTurn,
 	onRetreatTurn,
 	onClearEncounter,
-	onRollAllInitiative,
-	onOpenSourceManager,
 }: TurnNavigationProps) {
 	const hasCombatants = encounter.combatants.length > 0;
 	const isAtStart = encounter.roundNumber === 1 && encounter.activeIndex === 0;
@@ -49,35 +44,13 @@ export function TurnNavigation({
 			</div>
 
 			<div className="flex flex-shrink-0 items-center gap-3">
-				<div className="flex items-center gap-0">
-					<Button
-						variant="ghost"
-						size="icon"
-						className="text-muted-foreground hover:text-hover-action"
-						onClick={onRollAllInitiative}
-						title="Roll all initiative"
-						aria-label="Roll all initiative"
-					>
-						<D20Icon className="h-6 w-6" />
-					</Button>
-					<Button
-						variant="ghost"
-						size="icon"
-						className="text-muted-foreground hover:text-hover-neutral"
-						onClick={onOpenSourceManager}
-						title="Manage cached sources"
-						aria-label="Manage cached sources"
-					>
-						<Library className="h-5 w-5" />
-					</Button>
-					<ConfirmButton
-						icon={<Trash2 className="h-5 w-5" />}
-						label="Clear encounter"
-						onConfirm={onClearEncounter}
-						disabled={!hasCombatants}
-						className="text-muted-foreground"
-					/>
-				</div>
+				<ConfirmButton
+					icon={<Trash2 className="h-5 w-5" />}
+					label="Clear encounter"
+					onConfirm={onClearEncounter}
+					disabled={!hasCombatants}
+					className="text-muted-foreground"
+				/>
 				<Button
 					size="icon"
 					onClick={onAdvanceTurn}