feat: sidebar navigation to dedicated detail views

- Sidebar icons now navigate to full-screen views for each tool
- Dashboard bento cards have 'Expand' buttons that open the detail view
- Back arrow (←) in title bar returns to dashboard
- Detail views wrapped in a glass-card with max-w-2xl layout
- Settings page gets its own full layout with heading
- World Map, Quest Designer, Soundboard show placeholder screens with icons
- All nav items in sidebar: World, NPCs, Encounter, Dice, Session, Sound,
  Initiative, Random Tables, Calendar, Settings

src/App.tsx

@@ -7,48 +7,129 @@ import {
   Volume2,
   Settings,
   ChevronDown,
+  ChevronLeft,
+  Sparkles,
+  Timer,
+  Calendar,
 } from "lucide-react";
 import { useState } from "react";
 import { Dashboard } from "./components/Dashboard";
 import { SettingsPanel } from "./components/SettingsPanel";
+import { NpcGenerator } from "./components/NpcGenerator";
+import { DiceRoller } from "./components/DiceRoller";
+import { SessionLogger } from "./components/SessionLogger";
+import { EncounterBuilder } from "./components/EncounterBuilder";
+import { InitiativeTracker } from "./components/InitiativeTracker";
+import { RandomTables } from "./components/RandomTables";
+import { CalendarWidget } from "./components/CalendarWidget";
 
-type View = "dashboard" | "settings";
+export type View =
+  | "dashboard"
+  | "world"
+  | "npcs"
+  | "encounter"
+  | "dice"
+  | "session"
+  | "sound"
+  | "initiative"
+  | "tables"
+  | "calendar"
+  | "quest"
+  | "settings";
 
-const navItems = [
-  { icon: Map, label: "World" },
-  { icon: User, label: "NPCs" },
-  { icon: Swords, label: "Encounter" },
-  { icon: Dice5, label: "Dice" },
-  { icon: ScrollText, label: "Session" },
-  { icon: Volume2, label: "Sound" },
+const navItems: { icon: typeof Map; label: string; view: View }[] = [
+  { icon: Map, label: "World", view: "world" },
+  { icon: User, label: "NPCs", view: "npcs" },
+  { icon: Swords, label: "Encounter", view: "encounter" },
+  { icon: Dice5, label: "Dice", view: "dice" },
+  { icon: ScrollText, label: "Session", view: "session" },
+  { icon: Volume2, label: "Sound", view: "sound" },
 ];
 
+function renderView(view: View): React.ReactNode {
+  switch (view) {
+    case "npcs":
+      return <NpcGenerator />;
+    case "dice":
+      return <DiceRoller />;
+    case "session":
+      return <SessionLogger />;
+    case "encounter":
+      return <EncounterBuilder />;
+    case "initiative":
+      return <InitiativeTracker />;
+    case "tables":
+      return <RandomTables />;
+    case "calendar":
+      return <CalendarWidget />;
+    case "settings":
+      return <SettingsPanel />;
+    case "world":
+      return (
+        <div className="flex items-center justify-center h-full text-[var(--color-text-dim)]">
+          <div className="text-center">
+            <Map size={64} className="mx-auto mb-4 opacity-30" />
+            <p className="text-lg font-heading">World Map</p>
+            <p className="text-sm mt-2">Interactive map canvas coming soon</p>
+            <p className="text-xs mt-1 opacity-60">react-konva integration pending</p>
+          </div>
+        </div>
+      );
+    case "quest":
+      return (
+        <div className="flex items-center justify-center h-full text-[var(--color-text-dim)]">
+          <div className="text-center">
+            <Sparkles size={64} className="mx-auto mb-4 opacity-30" />
+            <p className="text-lg font-heading">Quest Designer</p>
+            <p className="text-sm mt-2">Branching flowchart coming soon</p>
+            <p className="text-xs mt-1 opacity-60">react-flow integration pending</p>
+          </div>
+        </div>
+      );
+    case "sound":
+      return (
+        <div className="flex items-center justify-center h-full text-[var(--color-text-dim)]">
+          <div className="text-center">
+            <Volume2 size={64} className="mx-auto mb-4 opacity-30" />
+            <p className="text-lg font-heading">Soundboard</p>
+            <p className="text-sm mt-2">Local audio clips for ambience</p>
+            <p className="text-xs mt-1 opacity-60">Coming soon</p>
+          </div>
+        </div>
+      );
+    default:
+      return null;
+  }
+}
+
 export default function App() {
   const [view, setView] = useState<View>("dashboard");
-  const [activeNav, setActiveNav] = useState(0);
+
+  const isDetailView = view !== "dashboard" && view !== "settings";
 
   return (
     <div className="flex h-screen w-screen overflow-hidden bg-[var(--color-bg-deep)]">
       {/* Left Rail */}
       <nav className="flex flex-col items-center w-14 bg-[var(--color-bg-surface)] border-r border-[var(--color-border-subtle)] py-3 gap-1 shrink-0">
-        {/* App Logo */}
+        {/* App Logo — goes to dashboard */}
         <button
           onClick={() => setView("dashboard")}
-          className="w-8 h-8 rounded-lg bg-[var(--color-gold-bright)] flex items-center justify-center mb-4 text-[var(--color-bg-deep)] font-heading font-bold text-lg cursor-pointer"
-          title="DM-Pal"
+          className={`w-8 h-8 rounded-lg flex items-center justify-center mb-4 font-heading font-bold text-lg cursor-pointer transition-colors ${
+            view === "dashboard"
+              ? "bg-[var(--color-gold-bright)] text-[var(--color-bg-deep)]"
+              : "bg-[var(--color-bg-card)] text-[var(--color-gold-bright)] hover:bg-[var(--color-gold-bright)] hover:text-[var(--color-bg-deep)]"
+          }`}
+          title="Dashboard"
         >
           ⚔
         </button>
 
-        {navItems.map((item, i) => (
+        {navItems.map((item) => (
           <button
             key={item.label}
-            onClick={() => {
-              setActiveNav(i);
-              setView("dashboard");
-            }}
+            onClick={() => setView(item.view)}
             className={`w-10 h-10 rounded-lg flex items-center justify-center transition-colors cursor-pointer ${
-              i === activeNav && view === "dashboard"
+              view === item.view
                 ? "bg-[var(--color-bg-card)] text-[var(--color-gold-bright)]"
                 : "text-[var(--color-text-dim)] hover:text-[var(--color-text-secondary)] hover:bg-[var(--color-bg-card)]"
             }`}
@@ -61,7 +142,44 @@ export default function App() {
         {/* Spacer */}
         <div className="flex-1" />
 
-        {/* Settings at bottom */}
+        {/* Extra nav items */}
+        <button
+          onClick={() => setView("initiative")}
+          className={`w-10 h-10 rounded-lg flex items-center justify-center transition-colors cursor-pointer ${
+            view === "initiative"
+              ? "bg-[var(--color-bg-card)] text-[var(--color-gold-bright)]"
+              : "text-[var(--color-text-dim)] hover:text-[var(--color-text-secondary)] hover:bg-[var(--color-bg-card)]"
+          }`}
+          title="Initiative"
+        >
+          <Timer size={18} />
+        </button>
+        <button
+          onClick={() => setView("tables")}
+          className={`w-10 h-10 rounded-lg flex items-center justify-center transition-colors cursor-pointer ${
+            view === "tables"
+              ? "bg-[var(--color-bg-card)] text-[var(--color-gold-bright)]"
+              : "text-[var(--color-text-dim)] hover:text-[var(--color-text-secondary)] hover:bg-[var(--color-bg-card)]"
+          }`}
+          title="Random Tables"
+        >
+          <Sparkles size={18} />
+        </button>
+        <button
+          onClick={() => setView("calendar")}
+          className={`w-10 h-10 rounded-lg flex items-center justify-center transition-colors cursor-pointer ${
+            view === "calendar"
+              ? "bg-[var(--color-bg-card)] text-[var(--color-gold-bright)]"
+              : "text-[var(--color-text-dim)] hover:text-[var(--color-text-secondary)] hover:bg-[var(--color-bg-card)]"
+          }`}
+          title="Calendar"
+        >
+          <Calendar size={18} />
+        </button>
+
+        <div className="w-6 h-px bg-[var(--color-border-subtle)] my-1" />
+
+        {/* Settings */}
         <button
           onClick={() => setView(view === "settings" ? "dashboard" : "settings")}
           className={`w-10 h-10 rounded-lg flex items-center justify-center transition-colors cursor-pointer ${
@@ -82,6 +200,15 @@ export default function App() {
           className="flex items-center h-10 px-4 bg-[var(--color-bg-surface)] border-b border-[var(--color-border-subtle)] shrink-0"
           data-tauri-drag-region
         >
+          {isDetailView && (
+            <button
+              onClick={() => setView("dashboard")}
+              className="mr-3 text-[var(--color-text-secondary)] hover:text-[var(--color-gold-bright)] transition-colors cursor-pointer"
+              title="Back to dashboard"
+            >
+              <ChevronLeft size={18} />
+            </button>
+          )}
           <span className="font-heading text-[var(--color-gold-bright)] text-base font-bold tracking-wider">
             DM-Pal
           </span>
@@ -93,7 +220,22 @@ export default function App() {
 
         {/* Main Content */}
         <main className="flex-1 overflow-auto">
-          {view === "dashboard" ? <Dashboard /> : <SettingsPanel />}
+          {view === "dashboard" ? (
+            <Dashboard onNavigate={setView} />
+          ) : view === "settings" ? (
+            <div className="max-w-lg mx-auto p-6">
+              <h2 className="font-heading text-[var(--color-gold-bright)] text-lg font-semibold mb-4">
+                Settings
+              </h2>
+              <SettingsPanel />
+            </div>
+          ) : isDetailView ? (
+            <div className="max-w-2xl mx-auto p-6">
+              <div className="glass-card p-6">
+                {renderView(view)}
+              </div>
+            </div>
+          ) : null}
         </main>
       </div>
     </div>

src/components/Dashboard.tsx

@@ -8,78 +8,167 @@ import {
   Timer,
   Volume2,
   Calendar,
+  Maximize2,
 } from "lucide-react";
 import { BentoCard } from "./BentoCard";
+import type { View } from "../App";
+
+interface DashboardProps {
+  onNavigate: (view: View) => void;
+}
+
+export function Dashboard({ onNavigate }: DashboardProps) {
+  return (
+    <div className="grid grid-cols-4 grid-rows-4 gap-3 p-4 h-full bg-[var(--color-bg-deep)]">
+      {/* World Map — 2×2 */}
+      <BentoCard title="World Map" icon={<Map size={16} />} span="col-span-2 row-span-2">
+        <div className="flex flex-col items-center justify-center h-full text-[var(--color-text-dim)] text-sm gap-2">
+          <Map size={48} className="opacity-30" />
+          <p>Map canvas coming soon</p>
+          <button
+            onClick={() => onNavigate("world")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center gap-1 cursor-pointer transition-colors"
+          >
+            <Maximize2 size={12} /> Open full view
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* NPC Sheet — 1×1 */}
+      <BentoCard title="NPC Sheet" icon={<User size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <NpcGenerator />
+          </div>
+          <button
+            onClick={() => onNavigate("npcs")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Dice Roller — 1×1 */}
+      <BentoCard title="Dice Roller" icon={<Dice5 size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <DiceRoller />
+          </div>
+          <button
+            onClick={() => onNavigate("dice")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Encounter Builder — 1×1 */}
+      <BentoCard title="Encounter" icon={<Swords size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <EncounterBuilder />
+          </div>
+          <button
+            onClick={() => onNavigate("encounter")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Session Log — 2×1 */}
+      <BentoCard title="Session Log" icon={<ScrollText size={16} />} span="col-span-2 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <SessionLogger />
+          </div>
+          <button
+            onClick={() => onNavigate("session")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Quest Designer — 2×1 */}
+      <BentoCard title="Quest Designer" icon={<Sparkles size={16} />} span="col-span-2 row-span-1">
+        <div className="flex flex-col items-center justify-center h-full text-[var(--color-text-dim)] text-sm gap-2">
+          <Sparkles size={32} className="opacity-30" />
+          <p>Quest flowchart coming soon</p>
+          <button
+            onClick={() => onNavigate("quest")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center gap-1 cursor-pointer transition-colors"
+          >
+            <Maximize2 size={12} /> Open
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Initiative Tracker — 1×1 */}
+      <BentoCard title="Initiative" icon={<Timer size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <InitiativeTracker />
+          </div>
+          <button
+            onClick={() => onNavigate("initiative")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Random Tables — 1×1 */}
+      <BentoCard title="Random Tables" icon={<Sparkles size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <RandomTables />
+          </div>
+          <button
+            onClick={() => onNavigate("tables")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Calendar — 1×1 */}
+      <BentoCard title="Calendar" icon={<Calendar size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col h-full">
+          <div className="flex-1 overflow-hidden">
+            <CalendarWidget />
+          </div>
+          <button
+            onClick={() => onNavigate("calendar")}
+            className="text-[var(--color-gold-bright)] hover:text-[var(--color-gold-muted)] text-xs flex items-center justify-center gap-1 cursor-pointer transition-colors mt-1 pt-2 border-t border-[var(--color-border-subtle)]"
+          >
+            <Maximize2 size={12} /> Expand
+          </button>
+        </div>
+      </BentoCard>
+
+      {/* Soundboard — 1×1 */}
+      <BentoCard title="Soundboard" icon={<Volume2 size={16} />} span="col-span-1 row-span-1">
+        <div className="flex flex-col items-center justify-center h-full text-[var(--color-text-dim)] text-sm gap-2">
+          <Volume2 size={32} className="opacity-30" />
+          <p>Soundboard coming soon</p>
+        </div>
+      </BentoCard>
+    </div>
+  );
+}
+
+// Inline imports for dashboard cards (compact versions)
 import { NpcGenerator } from "./NpcGenerator";
 import { DiceRoller } from "./DiceRoller";
 import { SessionLogger } from "./SessionLogger";
 import { EncounterBuilder } from "./EncounterBuilder";
 import { InitiativeTracker } from "./InitiativeTracker";
 import { RandomTables } from "./RandomTables";
-import { CalendarWidget } from "./CalendarWidget";
-
-export function Dashboard() {
-  return (
-    <div className="grid grid-cols-4 grid-rows-4 gap-3 p-4 h-full bg-[var(--color-bg-deep)]">
-      {/* World Map — 2×2 */}
-      <BentoCard title="World Map" icon={<Map size={16} />} span="col-span-2 row-span-2">
-        <div className="flex items-center justify-center h-full text-[var(--color-text-dim)] text-sm">
-          <div className="text-center">
-            <Map size={48} className="mx-auto mb-2 opacity-30" />
-            <p>Map canvas coming soon</p>
-            <p className="text-xs mt-1">react-konva integration pending</p>
-          </div>
-        </div>
-      </BentoCard>
-
-      {/* NPC Sheet — 1×1 */}
-      <BentoCard title="NPC Sheet" icon={<User size={16} />} span="col-span-1 row-span-1">
-        <NpcGenerator />
-      </BentoCard>
-
-      {/* Dice Roller — 1×1 */}
-      <BentoCard title="Dice Roller" icon={<Dice5 size={16} />} span="col-span-1 row-span-1">
-        <DiceRoller />
-      </BentoCard>
-
-      {/* Encounter Builder — 1×1 */}
-      <BentoCard title="Encounter" icon={<Swords size={16} />} span="col-span-1 row-span-1">
-        <EncounterBuilder />
-      </BentoCard>
-
-      {/* Session Log — 2×1 */}
-      <BentoCard title="Session Log" icon={<ScrollText size={16} />} span="col-span-2 row-span-1">
-        <SessionLogger />
-      </BentoCard>
-
-      {/* Quest Designer — 2×1 */}
-      <BentoCard title="Quest Designer" icon={<Sparkles size={16} />} span="col-span-2 row-span-1">
-        <div className="flex items-center justify-center h-full text-[var(--color-text-dim)] text-sm">
-          Quest flowchart coming soon — react-flow integration pending
-        </div>
-      </BentoCard>
-
-      {/* Initiative Tracker — 1×1 */}
-      <BentoCard title="Initiative" icon={<Timer size={16} />} span="col-span-1 row-span-1">
-        <InitiativeTracker />
-      </BentoCard>
-
-      {/* Random Tables — 1×1 */}
-      <BentoCard title="Random Tables" icon={<Sparkles size={16} />} span="col-span-1 row-span-1">
-        <RandomTables />
-      </BentoCard>
-
-      {/* Calendar — 1×1 */}
-      <BentoCard title="Calendar" icon={<Calendar size={16} />} span="col-span-1 row-span-1">
-        <CalendarWidget />
-      </BentoCard>
-
-      {/* Soundboard — 1×1 */}
-      <BentoCard title="Soundboard" icon={<Volume2 size={16} />} span="col-span-1 row-span-1">
-        <div className="flex items-center justify-center h-full text-[var(--color-text-dim)] text-sm">
-          Soundboard coming soon
-        </div>
-      </BentoCard>
-    </div>
-  );
-}
+import { CalendarWidget } from "./CalendarWidget";