chore(ui): remove retired Design Lab

DESIGN.md

@@ -152,18 +152,19 @@ Solid Imager is a workbench, not a marketing site. Its visual character is calm,
 compact, and media-first: the image collection receives the available area while
 navigation and metadata remain immediately reachable without competing with it.
 
-Three sources define the system, in this order:
+This file defines the system in two layers:
 
 1. The tokens in this file are the normative visual values.
 2. The guidance below defines why and when those values are used.
-3. `/design-lab` is the executable reference for layout and interaction behavior.
+
+The `/v2/*` routes are the executable reference for layout and interaction
+behavior.
 
 Use the shared components in `packages/ui` and continue to source primitives from
-Solid UI. The design lab may compose those primitives, but must not create a
-parallel component library. The lab is a migration reference; it is not evidence
-that a mocked concept such as accounts or a dedicated route must exist in the
-product. Controls that only demonstrate a visual state in the lab are not an API or
-feature contract until the corresponding product behavior is implemented.
+Solid UI. Keep the V2 screens on those shared primitives instead of creating a
+parallel component library. A visual state or control shown in design references
+is not an API or feature contract until the corresponding product behavior is
+implemented.
 
 The governing principles are:
 
@@ -204,10 +205,9 @@ black-to-transparent gradient is allowed only as a thumbnail text scrim. Do not
 a gray frame behind a full-size media preview; the preview itself should use the
 available surface.
 
-The current production theme and design-lab prototype predate this canonical
-palette: the theme still contains a zinc/black primary while parts of the lab use
-nearby colors inline. During migration, map the tokens above to shared CSS variables
-first. Do not copy the lab's one-off hex values into production components.
+The legacy production theme predates this canonical palette: it still contains a
+zinc/black primary. During migration, map the tokens above to shared CSS variables
+first. Do not introduce one-off hex values into production components.
 
 ## Typography
 
@@ -221,12 +221,13 @@ weight and spacing, not dramatic size jumps.
 - Form labels and secondary table data use `label` (12px).
 - Badges, counts, file extensions, and compact status text use `metadata` (11px).
 
-Prefer sentence case. Use all caps only for very small design-lab taxonomy labels,
+Prefer sentence case. Use all caps only for very small taxonomy labels,
 never for ordinary navigation or actions. Filenames and identifiers may wrap or
 truncate according to context, but they must expose the full value through the
 detail view or an accessible name. A production control group uses one active
 locale; do not mix Japanese and English labels inside the same workflow. Explanatory
-copy in the design lab may remain Japanese while product localization is undecided.
+copy in design documentation may remain Japanese while product localization is
+undecided.
 
 ## Layout
 
@@ -423,8 +424,8 @@ browser Back must render the same item or source.
 
 ### Do
 
-- Consult this file before changing shared UI, then compare the result in
-  `/design-lab` at wide and narrow viewports.
+- Consult this file before changing shared UI, then compare the implemented
+  `/v2/*` routes at wide and narrow viewports.
 - Reuse Solid UI primitives and promote recurring compositions into `packages/ui`.
 - Give each region one scroll owner and verify direct navigation, reload, and Back.
 - Use the shared spacing, radius, type, and color values instead of introducing a

REPORT.md

@@ -1,6 +1,6 @@
 # V2 UI migration report
 
-`/v2/*` は `DESIGN.md` と Design Lab を基準にした移行用フロントエンドです。検索、ソース操作、メディア管理、AI操作、設定、インポート、データ転送は実データへ接続し、未対応機能は推測データを表示せず無効化しています。
+`/v2/*` は `DESIGN.md` を基準にした移行用フロントエンドです。検索、ソース操作、メディア管理、AI操作、設定、インポート、データ転送は実データへ接続し、未対応機能は推測データを表示せず無効化しています。
 
 ## Current implementation status
 

apps/server/src/components/nav.tsx

@@ -2,10 +2,5 @@ import { AppNav } from "@solid-imager/ui/layouts/app-nav";
 import { PendingDownloadsIndicator } from "./imports/pending-downloads-indicator";
 
 export default function Nav() {
-	return (
-		<AppNav
-			pendingDownloadsIndicator={<PendingDownloadsIndicator />}
-			showDesignLab
-		/>
-	);
+	return <AppNav pendingDownloadsIndicator={<PendingDownloadsIndicator />} />;
 }

apps/server/src/routes/__root.tsx

@@ -57,14 +57,7 @@ function RootComponent() {
 			<body classList={{ "v2-theme": isV2Route() }}>
 				<ShortcutPreferencesProvider>
 					<Toaster />
-					<Show
-						fallback={<Outlet />}
-						when={
-							location().pathname !== "/design-lab" &&
-							!location().pathname.startsWith("/design-lab/") &&
-							!isV2Route()
-						}
-					>
+					<Show fallback={<Outlet />} when={!isV2Route()}>
 						<AppShell
 							nav={<Nav />}
 							statusIndicator={<RouteTransitionIndicator />}

docs/architecture/indexion-dependency-graph-03-server-infrastructure-routes.md

@@ -373,8 +373,6 @@ graph LR
   N368[npm:@solid-imager/ui/screens/sources-screen]
   N369[npm:@solid-imager/ui/source-card]
   N370[npm:@solid-imager/ui/source-delete-modal]
-  N371[routes/design-lab.tsx]
-  N372[npm:@solid-imager/ui/screens/design-concept-screen]
   N0 --> N1
   N0 --> N2
   N0 --> N3
@@ -887,6 +885,4 @@ graph LR
   N364 --> N282
   N364 --> N341
   N364 --> N303
-  N371 --> N372
-  N371 --> N282
 ```

docs/architecture/indexion-dependency-graph-04-server-application-components.md

@@ -80,7 +80,6 @@ graph LR
   N75[apps/server/src/routes/__root.tsx]
   N76[apps/server/src/routes/search.tsx]
   N77[apps/server/src/routes/manager.tsx]
-  N78[apps/server/src/routes/design-lab.tsx]
   N79[apps/server/src/routes/config.tsx]
   N80[apps/server/src/routes/about.tsx]
   N81[apps/server/src/routes/$.tsx]
@@ -198,7 +197,6 @@ graph LR
   N74 --> N75
   N74 --> N76
   N74 --> N77
-  N74 --> N78
   N74 --> N79
   N74 --> N80
   N74 --> N81

docs/architecture/indexion-dependency-graph-05-ui.md

@@ -101,7 +101,6 @@ graph LR
   N96[screens/source-media-screen.tsx]
   N97[screens/config-state-screen.types.ts]
   N98[query-state.ts]
-  N99[screens/design-concept-screen.tsx]
   N100[npm:lucide-solid/icons/arrow-down-up]
   N101[npm:lucide-solid/icons/arrow-left]
   N102[npm:lucide-solid/icons/ban]
@@ -367,41 +366,6 @@ graph LR
   N96 --> N9
   N97 --> N74
   N97 --> N98
-  N99 --> N100
-  N99 --> N101
-  N99 --> N102
-  N99 --> N103
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-  N99 --> N132
-  N99 --> N133
-  N99 --> N134
   N135 --> N2
   N135 --> N90
   N135 --> N93

docs/architecture/indexion-dependency-graph-full.md

@@ -724,8 +724,6 @@ graph LR
   N719[npm:~/routes/v2/media-context]
   N720[apps/server/src/routes/sources/$mediaSourceId/index.tsx]
   N721[apps/server/src/routes/sources/index.tsx]
-  N722[apps/server/src/routes/design-lab.tsx]
-  N723[npm:@solid-imager/ui/screens/design-concept-screen]
   N724[apps/server/src/components/imports/pending-downloads-indicator.tsx]
   N725[apps/server/src/components/imports/pending-downloads-indicator-data.ts]
   N726[apps/server/src/components/imports/v2-pending-downloads-indicator.tsx]
@@ -861,7 +859,6 @@ graph LR
   N856[packages/ui/src/screens/source-media-screen.tsx]
   N857[packages/ui/src/screens/config-state-screen.types.ts]
   N858[packages/ui/src/query-state.ts]
-  N859[packages/ui/src/screens/design-concept-screen.tsx]
   N860[npm:lucide-solid/icons/arrow-down-up]
   N861[npm:lucide-solid/icons/arrow-left]
   N862[npm:lucide-solid/icons/ban]
@@ -2251,8 +2248,6 @@ graph LR
   N721 --> N666
   N721 --> N118
   N721 --> N678
-  N722 --> N723
-  N722 --> N666
   N724 --> N49
   N724 --> N725
   N725 --> N48
@@ -2346,7 +2341,6 @@ graph LR
   N771 --> N667
   N771 --> N710
   N771 --> N708
-  N771 --> N722
   N771 --> N677
   N771 --> N668
   N771 --> N665
@@ -2520,41 +2514,6 @@ graph LR
   N856 --> N780
   N857 --> N426
   N857 --> N858
-  N859 --> N860
-  N859 --> N861
-  N859 --> N862
-  N859 --> N863
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-  N859 --> N865
-  N859 --> N866
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-  N859 --> N890
-  N859 --> N891
-  N859 --> N892
-  N859 --> N893
-  N859 --> N894
   N895 --> N774
   N895 --> N850
   N895 --> N853

docs/architecture/indexion-dependency-graph.md

@@ -1,14 +1,14 @@
 # solid-imager source dependencies (indexion)
 
-The complete indexion graph contains 1,810 edges, while the default Mermaid renderer allows 500 edges. Use the split diagrams below for VS Code preview.
+The complete indexion graph contains 1,772 edges, while the default Mermaid renderer allows 500 edges. Use the split diagrams below for VS Code preview.
 
 | Part | Scope | Edges |
 | --- | --- | ---: |
 | [01 apps and core](indexion-dependency-graph-01-apps-and-core.md) | CLI, Tauri, xtracter, and shared core packages | 431 |
 | [02 server tests](indexion-dependency-graph-02-server-tests.md) | `apps/server/src/tests` | 333 |
-| [03 server infrastructure and routes](indexion-dependency-graph-03-server-infrastructure-routes.md) | `apps/server/src/infrastructure` and `routes` | 514 |
-| [04 server components and root modules](indexion-dependency-graph-04-server-application-components.md) | server components, config, root modules, and route dependencies | 117 |
-| [05 UI](indexion-dependency-graph-05-ui.md) | `packages/ui/src` | 415 |
+| [03 server infrastructure and routes](indexion-dependency-graph-03-server-infrastructure-routes.md) | `apps/server/src/infrastructure` and `routes` | 512 |
+| [04 server components and root modules](indexion-dependency-graph-04-server-application-components.md) | server components, config, root modules, and route dependencies | 116 |
+| [05 UI](indexion-dependency-graph-05-ui.md) | `packages/ui/src` | 380 |
 
 The un-split graph is preserved in [indexion-dependency-graph-full.md](indexion-dependency-graph-full.md) for tools that allow a higher `maxEdges` value.
 

packages/ui/src/layouts/app-nav.tsx

@@ -14,7 +14,6 @@ import { isServer } from "solid-js/web";
 
 type AppNavProps = {
 	pendingDownloadsIndicator?: JSX.Element;
-	showDesignLab?: boolean;
 };
 
 const navigationItems = [
@@ -120,17 +119,6 @@ export function AppNav(props: AppNavProps) {
 								</Link>
 							</li>
 						))}
-						<Show when={props.showDesignLab}>
-							<li>
-								<a
-									aria-current={isActive("/design-lab") ? "page" : undefined}
-									class={desktopLinkClass("/design-lab")}
-									href="/design-lab"
-								>
-									Design Lab
-								</a>
-							</li>
-						</Show>
 						<li>
 							<a
 								class={desktopLinkClass("/docs")}
@@ -207,19 +195,6 @@ export function AppNav(props: AppNavProps) {
 														</Link>
 													</li>
 												))}
-												<Show when={props.showDesignLab}>
-													<li>
-														<a
-															aria-current={
-																isActive("/design-lab") ? "page" : undefined
-															}
-															class={`block min-h-11 ${mobileLinkClass("/design-lab")}`}
-															href="/design-lab"
-														>
-															Design Lab
-														</a>
-													</li>
-												</Show>
 												<li>
 													<a
 														class={`block min-h-11 ${mobileLinkClass("/docs")}`}