surface all app routes in nav

Nav only exposed a subset; Dashboard, Audio review, Subtitle extract, Jobs,
and Paths were reachable only via URL. Add links for every top-level route:

- left: Dashboard, Scan, Pipeline, Audio, Extract subs, Subtitle mgr, Jobs
- right: Paths, Settings

Split the two subtitle pages explicitly (Extract subs = per-item extraction
queue, Subtitle mgr = language summary + title harmonization) so their
distinct purpose is visible from the nav instead of hidden under one label.

src/routes/__root.tsx

@@ -64,12 +64,17 @@ function RootLayout() {
 				</Link>
 				<VersionBadge />
 				<div className="flex flex-wrap items-center gap-0.5">
+					<NavLink to="/">Dashboard</NavLink>
 					<NavLink to="/scan">Scan</NavLink>
 					<NavLink to="/pipeline">Pipeline</NavLink>
-					<NavLink to="/review/subtitles">Subtitles</NavLink>
+					<NavLink to="/review/audio">Audio</NavLink>
+					<NavLink to="/review/subtitles/extract">Extract subs</NavLink>
+					<NavLink to="/review/subtitles">Subtitle mgr</NavLink>
+					<NavLink to="/execute">Jobs</NavLink>
 				</div>
 				<div className="flex-1" />
 				<div className="flex items-center gap-0.5">
+					<NavLink to="/paths">Paths</NavLink>
 					<NavLink to="/settings">Settings</NavLink>
 				</div>
 			</nav>