Polish UI: consistent icon buttons, tooltips, modal backdrop close, and top bar layout

- Standardize icon button sizing (size="icon") and color (text-muted-foreground) across top and bottom bars
- Group bottom bar icon buttons with gap-0 to match top bar style
- Add missing tooltips/aria-labels for stat block viewer, bulk import buttons
- Replace Settings icon with Library for source manager
- Make step forward/back buttons use primary (solid) variant
- Move round badge next to combatant name in center of top bar
- Close player create/edit and management modals on backdrop click

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

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

@@ -1,5 +1,5 @@
 import type { Encounter } from "@initiative/domain";
-import { Settings, StepBack, StepForward, Trash2 } from "lucide-react";
+import { Library, StepBack, StepForward, Trash2 } from "lucide-react";
 import { D20Icon } from "./d20-icon";
 import { Button } from "./ui/button";
 import { ConfirmButton } from "./ui/confirm-button";
@@ -27,28 +27,22 @@ export function TurnNavigation({
 
 	return (
 		<div className="flex items-center gap-3 rounded-md border border-border bg-card px-4 py-3">
-			<div className="flex flex-shrink-0 items-center gap-3">
-				<Button
-					variant="outline"
-					size="icon"
-					className="h-8 w-8 text-foreground border-foreground hover:text-hover-action hover:border-hover-action hover:bg-transparent"
-					onClick={onRetreatTurn}
-					disabled={!hasCombatants || isAtStart}
-					title="Previous turn"
-					aria-label="Previous turn"
-				>
-					<StepBack className="h-5 w-5" />
-				</Button>
-				<span className="rounded-full bg-muted text-foreground text-sm px-2 py-0.5 font-semibold">
+			<Button
+				size="icon"
+				onClick={onRetreatTurn}
+				disabled={!hasCombatants || isAtStart}
+				title="Previous turn"
+				aria-label="Previous turn"
+			>
+				<StepBack className="h-5 w-5" />
+			</Button>
+
+			<div className="min-w-0 flex-1 flex items-center justify-center gap-2 text-sm">
+				<span className="rounded-full bg-muted text-foreground text-sm px-2 py-0.5 font-semibold shrink-0">
 					R{encounter.roundNumber}
 				</span>
-			</div>
-
-			<div className="min-w-0 flex-1 text-center text-sm">
 				{activeCombatant ? (
-					<span className="truncate block font-medium">
-						{activeCombatant.name}
-					</span>
+					<span className="truncate font-medium">{activeCombatant.name}</span>
 				) : (
 					<span className="text-muted-foreground">No combatants</span>
 				)}
@@ -59,7 +53,7 @@ export function TurnNavigation({
 					<Button
 						variant="ghost"
 						size="icon"
-						className="h-8 w-8 text-muted-foreground hover:text-hover-action"
+						className="text-muted-foreground hover:text-hover-action"
 						onClick={onRollAllInitiative}
 						title="Roll all initiative"
 						aria-label="Roll all initiative"
@@ -69,25 +63,23 @@ export function TurnNavigation({
 					<Button
 						variant="ghost"
 						size="icon"
-						className="h-8 w-8 text-muted-foreground hover:text-hover-neutral"
+						className="text-muted-foreground hover:text-hover-neutral"
 						onClick={onOpenSourceManager}
 						title="Manage cached sources"
 						aria-label="Manage cached sources"
 					>
-						<Settings className="h-5 w-5" />
+						<Library className="h-5 w-5" />
 					</Button>
 					<ConfirmButton
 						icon={<Trash2 className="h-5 w-5" />}
 						label="Clear encounter"
 						onConfirm={onClearEncounter}
 						disabled={!hasCombatants}
-						className="h-8 w-8 text-muted-foreground"
+						className="text-muted-foreground"
 					/>
 				</div>
 				<Button
-					variant="outline"
 					size="icon"
-					className="h-8 w-8 text-foreground border-foreground hover:text-hover-action hover:border-hover-action hover:bg-transparent"
 					onClick={onAdvanceTurn}
 					disabled={!hasCombatants}
 					title="Next turn"