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/App.tsx

@@ -239,6 +239,9 @@ export function App() {
 	}, [encounter.activeIndex, encounter.combatants, isLoaded]);
 
 	const isEmpty = encounter.combatants.length === 0;
+	const showRollAllInitiative = encounter.combatants.some(
+		(c) => c.creatureId != null && c.initiative == null,
+	);
 
 	return (
 		<div className="flex h-screen flex-col">
@@ -253,8 +256,6 @@ export function App() {
 							onAdvanceTurn={advanceTurn}
 							onRetreatTurn={retreatTurn}
 							onClearEncounter={clearEncounter}
-							onRollAllInitiative={handleRollAllInitiative}
-							onOpenSourceManager={() => setSourceManagerOpen((o) => !o)}
 						/>
 					</div>
 				)}
@@ -278,6 +279,9 @@ export function App() {
 								playerCharacters={playerCharacters}
 								onAddFromPlayerCharacter={addFromPlayerCharacter}
 								onManagePlayers={() => setManagementOpen(true)}
+								onRollAllInitiative={handleRollAllInitiative}
+								showRollAllInitiative={showRollAllInitiative}
+								onOpenSourceManager={() => setSourceManagerOpen((o) => !o)}
 								autoFocus
 							/>
 						</div>
@@ -337,6 +341,9 @@ export function App() {
 								playerCharacters={playerCharacters}
 								onAddFromPlayerCharacter={addFromPlayerCharacter}
 								onManagePlayers={() => setManagementOpen(true)}
+								onRollAllInitiative={handleRollAllInitiative}
+								showRollAllInitiative={showRollAllInitiative}
+								onOpenSourceManager={() => setSourceManagerOpen((o) => !o)}
 							/>
 						</div>
 					</>