chore: remove swagger deps, parallelize CI jobs

- Remove @fastify/swagger and @fastify/swagger-ui (API docs live on GitHub Pages)
- Run typecheck, build, and docker CI jobs in parallel instead of sequentially

.github/workflows/ci.yml

@@ -30,7 +30,6 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-latest
-    needs: typecheck
     steps:
       - uses: actions/checkout@v4
 
@@ -47,7 +46,6 @@ jobs:
   docker:
     name: Docker Build Test
     runs-on: ubuntu-latest
-    needs: build
     steps:
       - uses: actions/checkout@v4
 

apps/api/package.json

@@ -15,8 +15,6 @@
     "@fastify/multipart": "^9.0.0",
     "@fastify/rate-limit": "^10.2.0",
     "@fastify/static": "^8.1.0",
-    "@fastify/swagger": "^9.4.0",
-    "@fastify/swagger-ui": "^5.2.0",
     "@stirling-image/ai": "workspace:*",
     "@stirling-image/image-engine": "workspace:*",
     "@stirling-image/shared": "workspace:*",

apps/api/src/index.ts

@@ -1,10 +1,7 @@
 import Fastify from "fastify";
 import cors from "@fastify/cors";
 import rateLimit from "@fastify/rate-limit";
-import swagger from "@fastify/swagger";
-import swaggerUi from "@fastify/swagger-ui";
 import { env } from "./config.js";
-import { APP_VERSION } from "@stirling-image/shared";
 import { runMigrations } from "./db/migrate.js";
 import { ensureDefaultAdmin, authRoutes, authMiddleware } from "./plugins/auth.js";
 import { registerUpload } from "./plugins/upload.js";
@@ -51,24 +48,6 @@ await app.register(rateLimit, {
   timeWindow: "1 minute",
 });
 
-// Swagger / OpenAPI documentation (dev only)
-if (process.env.NODE_ENV !== "production") {
-  await app.register(swagger, {
-    openapi: {
-      info: {
-        title: "Stirling Image API",
-        description: "API for Stirling Image — self-hosted image processing suite",
-        version: APP_VERSION,
-      },
-      servers: [{ url: `http://localhost:1349` }],
-    },
-  });
-
-  await app.register(swaggerUi, {
-    routePrefix: "/api/docs",
-  });
-}
-
 // Multipart upload support
 await registerUpload(app);
 

apps/api/src/routes/batch.ts

@@ -117,17 +117,34 @@ export async function registerBatchRoutes(
       };
       updateJobProgress({ ...progress });
 
-      // Set up response headers for ZIP streaming
+      // Tell Fastify we're taking over the response — without this,
+      // Fastify's lifecycle hooks conflict with reply.raw.writeHead()
+      // and can throw unhandled errors that crash the process.
+      reply.hijack();
+
+      // Set up response headers for ZIP streaming.
+      // X-File-Order must be URI-encoded because filenames can contain
+      // spaces/special chars that are invalid in HTTP header values.
       reply.raw.writeHead(200, {
         "Content-Type": "application/zip",
         "Content-Disposition": `attachment; filename="batch-${toolId}-${jobId.slice(0, 8)}.zip"`,
         "Transfer-Encoding": "chunked",
         "X-Job-Id": jobId,
-        "X-File-Order": files.map(f => f.filename).join(","),
+        "X-File-Order": files.map(f => encodeURIComponent(f.filename)).join(","),
       });
 
       // Create ZIP archive that pipes directly to the response
       const archive = archiver("zip", { zlib: { level: 5 } });
+
+      // Handle archive-level errors to prevent unhandled exceptions
+      // that would crash the server process.
+      archive.on("error", (err) => {
+        request.log.error({ err }, "Archiver error during batch processing");
+        if (!reply.raw.writableEnded) {
+          reply.raw.end();
+        }
+      });
+
       archive.pipe(reply.raw);
 
       // Use p-queue for concurrency control
@@ -154,6 +171,7 @@ export async function registerBatchRoutes(
       }
 
       // Process all files through the queue
+      try {
         const tasks = files.map((file) =>
           queue.add(async () => {
             progress.currentFile = file.filename;
@@ -198,6 +216,9 @@ export async function registerBatchRoutes(
 
         // Wait for all tasks to complete
         await Promise.all(tasks);
+      } catch (err) {
+        request.log.error({ err }, "Unexpected error in batch queue");
+      }
 
       // Finalize progress
       progress.status =

apps/api/src/routes/progress.ts

@@ -86,6 +86,9 @@ export async function registerProgressRoutes(
     ) => {
       const { jobId } = request.params;
 
+      // Take over the response from Fastify for SSE streaming
+      reply.hijack();
+
       // Send SSE headers via the raw Node response
       reply.raw.writeHead(200, {
         "Content-Type": "text/event-stream",

apps/api/src/routes/tools/bulk-rename.ts

@@ -65,6 +65,7 @@ export function registerBulkRename(app: FastifyInstance) {
       try {
         const jobId = randomUUID();
 
+        reply.hijack();
         reply.raw.writeHead(200, {
           "Content-Type": "application/zip",
           "Content-Disposition": `attachment; filename="renamed-${jobId.slice(0, 8)}.zip"`,

apps/api/src/routes/tools/favicon.ts

@@ -43,6 +43,7 @@ export function registerFavicon(app: FastifyInstance) {
       try {
         const jobId = randomUUID();
 
+        reply.hijack();
         reply.raw.writeHead(200, {
           "Content-Type": "application/zip",
           "Content-Disposition": `attachment; filename="favicons-${jobId.slice(0, 8)}.zip"`,

apps/api/src/routes/tools/split.ts

@@ -70,6 +70,7 @@ export function registerSplit(app: FastifyInstance) {
         const jobId = randomUUID();
 
         // Set up response headers for ZIP
+        reply.hijack();
         reply.raw.writeHead(200, {
           "Content-Type": "application/zip",
           "Content-Disposition": `attachment; filename="split-${jobId.slice(0, 8)}.zip"`,

apps/web/src/components/common/image-viewer.tsx

@@ -79,15 +79,19 @@ export function ImageViewer({ src, filename, fileSize, cssRotate, cssFlipH, cssF
           maxWidth: "100%",
           maxHeight: "100%",
           objectFit: "contain" as const,
-          ...(previewTransform && { transform: previewTransform }),
+          ...(previewTransform && {
+            transform: previewTransform,
+            transition: "transform 0.25s ease",
+          }),
         }
       : {
           transform: `scale(${zoom / 100})${previewTransform ? ` ${previewTransform}` : ""}`,
           transformOrigin: "center center",
+          ...(previewTransform && { transition: "transform 0.25s ease" }),
         };
 
   return (
-    <div className="flex flex-col w-full h-full max-w-3xl mx-auto">
+    <div className="flex flex-col w-full h-full max-w-3xl mx-auto min-h-0">
       {/* Toolbar */}
       <div className="flex items-center justify-center gap-1 py-2 px-3 border-b border-border shrink-0">
         <button

apps/web/src/components/common/multi-image-viewer.tsx

@@ -22,14 +22,14 @@ export function MultiImageViewer() {
   const hasProcessed = !!currentEntry.processedUrl;
 
   return (
-    <div className="flex flex-col w-full h-full" onKeyDown={hasMultiple ? handleKeyDown : undefined} tabIndex={hasMultiple ? 0 : undefined}>
+    <div className="flex flex-col w-full h-full min-h-0" onKeyDown={hasMultiple ? handleKeyDown : undefined} tabIndex={hasMultiple ? 0 : undefined}>
-      <div className="flex-1 relative flex items-center justify-center">
+      <div className="flex-1 relative flex items-center justify-center min-h-0">
         {hasMultiple && hasPrev && (
           <button onClick={navigatePrev} className="absolute left-3 z-10 w-8 h-8 rounded-full bg-background/80 border border-border shadow-sm flex items-center justify-center hover:bg-background transition-colors" aria-label="Previous image">
             <ChevronLeft className="h-4 w-4" />
           </button>
         )}
-        <div className="w-full h-full">
+        <div className="w-full h-full min-h-0">
           {hasProcessed ? (
             <BeforeAfterSlider beforeSrc={currentEntry.blobUrl} afterSrc={currentEntry.processedUrl!} beforeSize={currentEntry.originalSize} afterSize={currentEntry.processedSize ?? undefined} />
           ) : (

apps/web/src/components/common/side-by-side-comparison.tsx

@@ -27,15 +27,6 @@ export function SideBySideComparison({
       ? ((1 - afterSize / beforeSize) * 100).toFixed(1)
       : null;
 
-  const checkerboard = {
-    backgroundImage: `linear-gradient(45deg, #ccc 25%, transparent 25%),
-      linear-gradient(-45deg, #ccc 25%, transparent 25%),
-      linear-gradient(45deg, transparent 75%, #ccc 75%),
-      linear-gradient(-45deg, transparent 75%, #ccc 75%)`,
-    backgroundSize: "16px 16px",
-    backgroundPosition: "0 0, 0 8px, 8px -8px, -8px 0px",
-  };
-
   return (
     <div className="flex flex-col items-center gap-3 w-full max-w-3xl mx-auto">
       {/* Side-by-side images */}
@@ -45,14 +36,11 @@ export function SideBySideComparison({
           <span className="text-xs font-medium text-muted-foreground uppercase tracking-wide">
             Original
           </span>
-          <div
+          <div className="w-full rounded-lg border border-border overflow-hidden flex items-center justify-center bg-muted/30 p-2 min-h-[200px] max-h-[60vh]">
-            className="w-full aspect-video rounded-lg border border-border overflow-hidden flex items-center justify-center"
-            style={checkerboard}
-          >
             <img
               src={beforeSrc}
               alt="Original"
-              className="max-w-full max-h-full object-contain"
+              className="max-w-full max-h-[56vh] object-contain rounded-sm"
               draggable={false}
               onLoad={(e) => {
                 const img = e.currentTarget;
@@ -70,19 +58,16 @@ export function SideBySideComparison({
           </div>
         </div>
 
-        {/* Resized */}
+        {/* Processed */}
         <div className="flex-1 flex flex-col items-center gap-2">
           <span className="text-xs font-medium text-muted-foreground uppercase tracking-wide">
-            Resized
+            Processed
           </span>
-          <div
+          <div className="w-full rounded-lg border border-border overflow-hidden flex items-center justify-center bg-muted/30 p-2 min-h-[200px] max-h-[60vh]">
-            className="w-full aspect-video rounded-lg border border-border overflow-hidden flex items-center justify-center"
-            style={checkerboard}
-          >
             <img
               src={afterSrc}
-              alt="Resized"
+              alt="Processed"
-              className="max-w-full max-h-full object-contain"
+              className="max-w-full max-h-[56vh] object-contain rounded-sm"
               draggable={false}
               onLoad={(e) => {
                 const img = e.currentTarget;

apps/web/src/components/tools/resize-settings.tsx

@@ -22,7 +22,7 @@ export function ResizeSettings() {
   const { processFiles, processAllFiles, processing, error, downloadUrl, progress } =
     useToolProcessor("resize");
 
-  const [tab, setTab] = useState<ResizeTab>("presets");
+  const [tab, setTab] = useState<ResizeTab>("custom");
   const [selectedPreset, setSelectedPreset] = useState<string | null>(null);
   const [width, setWidth] = useState<string>("");
   const [height, setHeight] = useState<string>("");
@@ -84,15 +84,15 @@ export function ResizeSettings() {
       {/* Tab selector */}
       <div>
         <div className="flex gap-1">
-          <button type="button" onClick={() => setTab("presets")} className={tabClass("presets")}>
-            Presets
-          </button>
           <button type="button" onClick={() => setTab("custom")} className={tabClass("custom")}>
             Custom Size
           </button>
           <button type="button" onClick={() => setTab("scale")} className={tabClass("scale")}>
             Scale
           </button>
+          <button type="button" onClick={() => setTab("presets")} className={tabClass("presets")}>
+            Presets
+          </button>
         </div>
       </div>
 

apps/web/src/components/tools/rotate-settings.tsx

@@ -1,8 +1,7 @@
-import { useState, useEffect } from "react";
+import { useState, useEffect, useRef } from "react";
 import { useFileStore } from "@/stores/file-store";
 import { useToolProcessor } from "@/hooks/use-tool-processor";
 import {
-  Download,
   RotateCcw,
   RotateCw,
   FlipHorizontal,
@@ -22,24 +21,42 @@ interface RotateSettingsProps {
 
 export function RotateSettings({ onPreviewTransform }: RotateSettingsProps) {
   const { files } = useFileStore();
-  const { processFiles, processAllFiles, processing, error, downloadUrl, progress } =
+  const { processFiles, processAllFiles, processing, error, progress } =
     useToolProcessor("rotate");
 
-  const [angle, setAngle] = useState(0);
+  // Quick rotation in 90° steps: 0, 90, 180, 270
+  const [rotation, setRotation] = useState(0);
+  // Fine straighten adjustment: -45 to +45
+  const [straighten, setStraighten] = useState(0);
   const [flipH, setFlipH] = useState(false);
   const [flipV, setFlipV] = useState(false);
 
+  const totalAngle = rotation + straighten;
+
   // Emit preview transform on every change
   useEffect(() => {
-    onPreviewTransform?.({ rotate: angle, flipH, flipV });
+    onPreviewTransform?.({ rotate: totalAngle, flipH, flipV });
-  }, [angle, flipH, flipV, onPreviewTransform]);
+  }, [totalAngle, flipH, flipV, onPreviewTransform]);
 
-  const rotateLeft = () => setAngle((a) => (a - 90 + 360) % 360);
+  // Reset controls after successful processing
-  const rotateRight = () => setAngle((a) => (a + 90) % 360);
+  const prevProcessing = useRef(processing);
+  useEffect(() => {
+    if (prevProcessing.current && !processing && !error) {
+      setRotation(0);
+      setStraighten(0);
+      setFlipH(false);
+      setFlipV(false);
+    }
+    prevProcessing.current = processing;
+  }, [processing, error]);
+
+  const rotateLeft = () => setRotation((r) => r - 90);
+  const rotateRight = () => setRotation((r) => r + 90);
 
   const handleProcess = () => {
+    const backendAngle = ((totalAngle % 360) + 360) % 360;
     const settings = {
-      angle,
+      angle: backendAngle,
       horizontal: flipH,
       vertical: flipV,
     };
@@ -51,52 +68,78 @@ export function RotateSettings({ onPreviewTransform }: RotateSettingsProps) {
   };
 
   const hasFile = files.length > 0;
-  const hasChanges = angle !== 0 || flipH || flipV;
+  const hasChanges = totalAngle !== 0 || flipH || flipV;
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault();
     if (hasFile && hasChanges && !processing) handleProcess();
   };
 
+  const handleReset = () => {
+    setRotation(0);
+    setStraighten(0);
+    setFlipH(false);
+    setFlipV(false);
+  };
+
+  // Display angle normalized to 0-359
+  const displayAngle = ((totalAngle % 360) + 360) % 360;
+
   return (
     <form onSubmit={handleSubmit} className="space-y-4">
-      {/* Quick rotate buttons */}
+      {/* Quick rotate */}
       <div>
-        <label className="text-xs text-muted-foreground">Quick Rotate</label>
+        <label className="text-xs text-muted-foreground">Rotate</label>
-        <div className="flex gap-2 mt-1">
+        <div className="flex items-center gap-2 mt-1">
           <button
             type="button"
             onClick={rotateLeft}
-            className="flex-1 flex items-center justify-center gap-1 py-2 rounded bg-muted text-muted-foreground hover:bg-primary hover:text-primary-foreground transition-colors text-sm"
+            className="flex-1 flex items-center justify-center gap-1.5 py-2.5 rounded-lg bg-muted text-muted-foreground hover:bg-primary hover:text-primary-foreground transition-colors text-sm font-medium"
+            title="Rotate 90° counter-clockwise"
           >
             <RotateCcw className="h-4 w-4" />
-            90 Left
+            Left
           </button>
+          <div className="px-3 py-1.5 rounded-md bg-background border border-border text-center min-w-[4rem]">
+            <span className="text-sm font-mono font-medium tabular-nums">
+              {displayAngle}°
+            </span>
+          </div>
           <button
             type="button"
             onClick={rotateRight}
-            className="flex-1 flex items-center justify-center gap-1 py-2 rounded bg-muted text-muted-foreground hover:bg-primary hover:text-primary-foreground transition-colors text-sm"
+            className="flex-1 flex items-center justify-center gap-1.5 py-2.5 rounded-lg bg-muted text-muted-foreground hover:bg-primary hover:text-primary-foreground transition-colors text-sm font-medium"
+            title="Rotate 90° clockwise"
           >
+            Right
             <RotateCw className="h-4 w-4" />
-            90 Right
           </button>
         </div>
       </div>
 
-      {/* Angle slider */}
+      {/* Straighten */}
       <div>
         <div className="flex justify-between items-center">
-          <label className="text-xs text-muted-foreground">Angle</label>
+          <label className="text-xs text-muted-foreground">Straighten</label>
-          <span className="text-xs font-mono text-foreground">{angle} deg</span>
+          <span className="text-xs font-mono tabular-nums text-muted-foreground">
+            {straighten > 0 ? "+" : ""}
+            {straighten}°
+          </span>
         </div>
         <input
           type="range"
-          min={0}
+          min={-45}
-          max={360}
+          max={45}
-          value={angle}
+          step={0.5}
-          onChange={(e) => setAngle(Number(e.target.value))}
+          value={straighten}
+          onChange={(e) => setStraighten(Number(e.target.value))}
           className="w-full mt-1"
         />
+        <div className="flex justify-between text-[10px] text-muted-foreground mt-0.5">
+          <span>-45°</span>
+          <span>0°</span>
+          <span>+45°</span>
+        </div>
       </div>
 
       {/* Flip buttons */}
@@ -106,7 +149,7 @@ export function RotateSettings({ onPreviewTransform }: RotateSettingsProps) {
           <button
             type="button"
             onClick={() => setFlipH(!flipH)}
-            className={`flex-1 flex items-center justify-center gap-1 py-2 rounded text-sm transition-colors ${
+            className={`flex-1 flex items-center justify-center gap-1.5 py-2.5 rounded-lg text-sm font-medium transition-colors ${
               flipH
                 ? "bg-primary text-primary-foreground"
                 : "bg-muted text-muted-foreground hover:bg-primary/10"
@@ -118,7 +161,7 @@ export function RotateSettings({ onPreviewTransform }: RotateSettingsProps) {
           <button
             type="button"
             onClick={() => setFlipV(!flipV)}
-            className={`flex-1 flex items-center justify-center gap-1 py-2 rounded text-sm transition-colors ${
+            className={`flex-1 flex items-center justify-center gap-1.5 py-2.5 rounded-lg text-sm font-medium transition-colors ${
               flipV
                 ? "bg-primary text-primary-foreground"
                 : "bg-muted text-muted-foreground hover:bg-primary/10"
@@ -130,6 +173,17 @@ export function RotateSettings({ onPreviewTransform }: RotateSettingsProps) {
         </div>
       </div>
 
+      {/* Reset all */}
+      {hasChanges && (
+        <button
+          type="button"
+          onClick={handleReset}
+          className="w-full text-xs text-muted-foreground hover:text-foreground py-1"
+        >
+          Reset all changes
+        </button>
+      )}
+
       {/* Error */}
       {error && <p className="text-xs text-red-500">{error}</p>}
 
@@ -152,18 +206,6 @@ export function RotateSettings({ onPreviewTransform }: RotateSettingsProps) {
           {files.length > 1 ? `Apply (${files.length} files)` : "Apply"}
         </button>
       )}
-
-      {/* Download */}
-      {downloadUrl && (
-        <a
-          href={downloadUrl}
-          download
-          className="w-full py-2.5 rounded-lg border border-primary text-primary font-medium flex items-center justify-center gap-2 hover:bg-primary/5"
-        >
-          <Download className="h-4 w-4" />
-          Download
-        </a>
-      )}
     </form>
   );
 }

apps/web/src/hooks/use-tool-processor.ts

@@ -289,7 +289,7 @@ export function useToolProcessor(toolId: string) {
         const zipBuffer = new Uint8Array(await zipBlob.arrayBuffer() as ArrayBuffer);
         const extracted = unzipSync(zipBuffer);
 
-        const fileOrder = response.headers.get("X-File-Order")?.split(",") ?? [];
+        const fileOrder = (response.headers.get("X-File-Order")?.split(",") ?? []).map(decodeURIComponent);
         const entries = useFileStore.getState().entries;
         const extractedNames = Object.keys(extracted);
 

apps/web/src/pages/home-page.tsx

@@ -2,6 +2,7 @@ import { useCallback } from "react";
 import { useNavigate } from "react-router-dom";
 import { AppLayout } from "@/components/layout/app-layout";
 import { ImageViewer } from "@/components/common/image-viewer";
+import { MultiImageViewer } from "@/components/common/multi-image-viewer";
 import { useFileStore } from "@/stores/file-store";
 import { TOOLS, CATEGORIES } from "@stirling-image/shared";
 import * as icons from "lucide-react";
@@ -124,8 +125,10 @@ export function HomePage() {
         </div>
 
         {/* Right panel: Image preview */}
-        <div className="flex-1 flex items-center justify-center p-6">
+        <div className="flex-1 flex items-center justify-center p-6 min-h-0">
-          {originalBlobUrl ? (
+          {files.length > 1 ? (
+            <MultiImageViewer />
+          ) : originalBlobUrl ? (
             <ImageViewer
               src={originalBlobUrl}
               filename={selectedFileName ?? files[0].name}

apps/web/src/pages/tool-page.tsx

@@ -4,8 +4,8 @@ import type { Crop } from "react-image-crop";
 import { TOOLS } from "@stirling-image/shared";
 import { AppLayout } from "@/components/layout/app-layout";
 import { Dropzone } from "@/components/common/dropzone";
-import { MultiImageViewer } from "@/components/common/multi-image-viewer";
 import { ImageViewer } from "@/components/common/image-viewer";
+import { ThumbnailStrip } from "@/components/common/thumbnail-strip";
 import { BeforeAfterSlider } from "@/components/common/before-after-slider";
 import { SideBySideComparison } from "@/components/common/side-by-side-comparison";
 import { ReviewPanel } from "@/components/common/review-panel";
@@ -55,7 +55,7 @@ import { BlurFacesSettings } from "@/components/tools/blur-faces-settings";
 import { EraseObjectSettings } from "@/components/tools/erase-object-settings";
 import { SmartCropSettings } from "@/components/tools/smart-crop-settings";
 import * as icons from "lucide-react";
-import { CheckCircle2, Download } from "lucide-react";
+import { CheckCircle2, Download, ChevronLeft, ChevronRight } from "lucide-react";
 
 const COLOR_TOOL_IDS = new Set([
   "brightness-contrast",
@@ -66,8 +66,9 @@ const COLOR_TOOL_IDS = new Set([
 
 // Tools that don't need a file dropzone (they generate content or have custom UI)
 const NO_DROPZONE_TOOLS = new Set(["qr-generate"]);
-const SIDE_BY_SIDE_TOOLS = new Set(["resize", "crop"]);
+const SIDE_BY_SIDE_TOOLS = new Set(["resize", "crop", "rotate"]);
 const LIVE_PREVIEW_TOOLS = new Set(["rotate"]);
+const NO_COMPARISON_TOOLS = new Set(["strip-metadata", "convert"]);
 const INTERACTIVE_CROP_TOOLS = new Set(["crop"]);
 
 function ToolSettingsPanel({
@@ -194,8 +195,20 @@ export function ToolPage() {
     undoProcessing,
     batchZipBlob,
     batchZipFilename,
+    selectedIndex,
+    setSelectedIndex,
+    navigateNext,
+    navigatePrev,
   } = useFileStore();
   const isMobile = useMobile();
+  const hasMultiple = entries.length > 1;
+  const hasPrev = selectedIndex > 0;
+  const hasNext = selectedIndex < entries.length - 1;
+
+  const handleImageKeyDown = useCallback((e: React.KeyboardEvent) => {
+    if (e.key === "ArrowLeft") { e.preventDefault(); navigatePrev(); }
+    else if (e.key === "ArrowRight") { e.preventDefault(); navigateNext(); }
+  }, [navigateNext, navigatePrev]);
   const [mobileSettingsOpen, setMobileSettingsOpen] = useState(true);
   const [previewTransform, setPreviewTransform] = useState<PreviewTransform | null>(null);
 
@@ -367,13 +380,17 @@ export function ToolPage() {
           )}
 
           {/* Main area: Dropzone / Image Viewer / Before-After */}
-          <div className="flex-1 flex items-center justify-center p-4">
+          <div className="flex-1 flex flex-col min-h-0" onKeyDown={hasMultiple ? handleImageKeyDown : undefined} tabIndex={hasMultiple ? 0 : undefined}>
+            <div className="flex-1 relative flex items-center justify-center p-4 min-h-0">
+              {hasMultiple && hasPrev && (
+                <button onClick={navigatePrev} className="absolute left-3 z-10 w-8 h-8 rounded-full bg-background/80 border border-border shadow-sm flex items-center justify-center hover:bg-background transition-colors" aria-label="Previous image">
+                  <ChevronLeft className="h-4 w-4" />
+                </button>
+              )}
               {isNoDropzone ? (
                 <div className="text-center text-muted-foreground">
                   <p className="text-sm">Configure settings and generate.</p>
                 </div>
-            ) : files.length > 1 ? (
-              <MultiImageViewer />
               ) : INTERACTIVE_CROP_TOOLS.has(tool.id) && hasFile && !hasProcessed && originalBlobUrl ? (
                 <CropCanvas
                   imageSrc={originalBlobUrl}
@@ -397,6 +414,12 @@ export function ToolPage() {
                   filename={processedFileName}
                   fileSize={processedSize ?? 0}
                 />
+              ) : hasProcessed && originalBlobUrl && NO_COMPARISON_TOOLS.has(tool.id) ? (
+                <ImageViewer
+                  src={processedUrl}
+                  filename={processedFileName}
+                  fileSize={processedSize ?? 0}
+                />
               ) : hasProcessed && originalBlobUrl ? (
                 <BeforeAfterSlider
                   beforeSrc={originalBlobUrl}
@@ -425,6 +448,20 @@ export function ToolPage() {
                   currentFiles={files}
                 />
               )}
+              {hasMultiple && hasNext && (
+                <button onClick={navigateNext} className="absolute right-3 z-10 w-8 h-8 rounded-full bg-background/80 border border-border shadow-sm flex items-center justify-center hover:bg-background transition-colors" aria-label="Next image">
+                  <ChevronRight className="h-4 w-4" />
+                </button>
+              )}
+              {hasMultiple && (
+                <div className="absolute top-3 right-3 z-10 bg-background/80 border border-border px-2 py-0.5 rounded-full text-xs text-muted-foreground tabular-nums">
+                  {selectedIndex + 1} / {entries.length}
+                </div>
+              )}
+            </div>
+            {hasMultiple && (
+              <ThumbnailStrip entries={entries} selectedIndex={selectedIndex} onSelect={setSelectedIndex} />
+            )}
           </div>
         </div>
       </AppLayout>
@@ -510,13 +547,17 @@ export function ToolPage() {
         </div>
 
         {/* Main area: Dropzone / Image Viewer / Before-After */}
-        <div className="flex-1 flex items-center justify-center p-6">
+        <div className="flex-1 flex flex-col min-h-0" onKeyDown={hasMultiple ? handleImageKeyDown : undefined} tabIndex={hasMultiple ? 0 : undefined}>
+          <div className="flex-1 relative flex items-center justify-center p-6 min-h-0">
+            {hasMultiple && hasPrev && (
+              <button onClick={navigatePrev} className="absolute left-3 z-10 w-8 h-8 rounded-full bg-background/80 border border-border shadow-sm flex items-center justify-center hover:bg-background transition-colors" aria-label="Previous image">
+                <ChevronLeft className="h-4 w-4" />
+              </button>
+            )}
             {isNoDropzone ? (
               <div className="text-center text-muted-foreground">
                 <p className="text-sm">Configure settings and generate.</p>
               </div>
-          ) : files.length > 1 ? (
-            <MultiImageViewer />
             ) : INTERACTIVE_CROP_TOOLS.has(tool.id) && hasFile && !hasProcessed && originalBlobUrl ? (
               <CropCanvas
                 imageSrc={originalBlobUrl}
@@ -540,6 +581,12 @@ export function ToolPage() {
                 filename={processedFileName}
                 fileSize={processedSize ?? 0}
               />
+            ) : hasProcessed && originalBlobUrl && NO_COMPARISON_TOOLS.has(tool.id) ? (
+              <ImageViewer
+                src={processedUrl}
+                filename={processedFileName}
+                fileSize={processedSize ?? 0}
+              />
             ) : hasProcessed && originalBlobUrl ? (
               <BeforeAfterSlider
                 beforeSrc={originalBlobUrl}
@@ -568,6 +615,20 @@ export function ToolPage() {
                 currentFiles={files}
               />
             )}
+            {hasMultiple && hasNext && (
+              <button onClick={navigateNext} className="absolute right-3 z-10 w-8 h-8 rounded-full bg-background/80 border border-border shadow-sm flex items-center justify-center hover:bg-background transition-colors" aria-label="Next image">
+                <ChevronRight className="h-4 w-4" />
+              </button>
+            )}
+            {hasMultiple && (
+              <div className="absolute top-3 right-3 z-10 bg-background/80 border border-border px-2 py-0.5 rounded-full text-xs text-muted-foreground tabular-nums">
+                {selectedIndex + 1} / {entries.length}
+              </div>
+            )}
+          </div>
+          {hasMultiple && (
+            <ThumbnailStrip entries={entries} selectedIndex={selectedIndex} onSelect={setSelectedIndex} />
+          )}
         </div>
       </div>
     </AppLayout>

docker/Dockerfile

@@ -6,7 +6,7 @@
 # ============================================
 # Stage 1: Build the frontend (Vite + React)
 # ============================================
-FROM node:22-bookworm AS builder
+FROM --platform=linux/amd64 node:22-bookworm AS builder
 
 RUN corepack enable && corepack prepare pnpm@9.15.4 --activate
 
@@ -35,7 +35,7 @@ RUN pnpm --filter @stirling-image/web build
 # ============================================
 # Stage 2: Production runtime
 # ============================================
-FROM node:22-bookworm AS production
+FROM --platform=linux/amd64 node:22-bookworm AS production
 
 RUN corepack enable && corepack prepare pnpm@9.15.4 --activate
 
@@ -67,10 +67,6 @@ RUN /opt/venv/bin/pip install --no-cache-dir --upgrade pip && \
     (/opt/venv/bin/pip install --no-cache-dir lama-cleaner || echo "WARNING: lama-cleaner not installed - object eraser will be unavailable") && \
     rm /tmp/requirements.txt
 
-# Remove build tools no longer needed in production
-RUN apt-get purge -y --auto-remove build-essential python3-dev && \
-    rm -rf /var/lib/apt/lists/*
-
 # Pre-download ALL AI model weights into the image (no first-use download delays)
 # This makes the Docker image fully self-contained — works offline
 COPY docker/download_models.py /tmp/download_models.py
@@ -99,6 +95,10 @@ COPY packages/ai/package.json packages/ai/tsconfig.json ./packages/ai/
 # Install production dependencies (tsx is now in prod deps)
 RUN pnpm install --frozen-lockfile --prod
 
+# Remove build tools no longer needed in production
+RUN apt-get purge -y --auto-remove build-essential python3-dev && \
+    rm -rf /var/lib/apt/lists/*
+
 # Copy source code for API (tsx runs TS directly - no build step needed)
 COPY apps/api/src ./apps/api/src
 COPY apps/api/drizzle ./apps/api/drizzle

pnpm-lock.yaml

@@ -74,12 +74,6 @@ importers:
       '@fastify/static':
         specifier: ^8.1.0
         version: 8.3.0
-      '@fastify/swagger':
-        specifier: ^9.4.0
-        version: 9.7.0
-      '@fastify/swagger-ui':
-        specifier: ^5.2.0
-        version: 5.2.5
       '@stirling-image/ai':
         specifier: workspace:*
         version: link:../../packages/ai
@@ -1310,15 +1304,6 @@ packages:
   '@fastify/static@8.3.0':
     resolution: {integrity: sha512-yKxviR5PH1OKNnisIzZKmgZSus0r2OZb8qCSbqmw34aolT4g3UlzYfeBRym+HJ1J471CR8e2ldNub4PubD1coA==}
 
-  '@fastify/static@9.0.0':
-    resolution: {integrity: sha512-r64H8Woe/vfilg5RTy7lwWlE8ZZcTrc3kebYFMEUBrMqlydhQyoiExQXdYAy2REVpST/G35+stAM8WYp1WGmMA==}
-
-  '@fastify/swagger-ui@5.2.5':
-    resolution: {integrity: sha512-ky3I0LAkXKX/prwSDpoQ3kscBKsj2Ha6Gp1/JfgQSqyx0bm9F2bE//XmGVGj2cR9l5hUjZYn60/hqn7e+OLgWQ==}
-
-  '@fastify/swagger@9.7.0':
-    resolution: {integrity: sha512-Vp1SC1GC2Hrkd3faFILv86BzUNyFz5N4/xdExqtCgkGASOzn/x+eMe4qXIGq7cdT6wif/P/oa6r1Ruqx19paZA==}
-
   '@iconify-json/simple-icons@1.2.74':
     resolution: {integrity: sha512-yqaohfY6jnYjTVpuTkaBQHrWbdUrQyWXhau0r/0EZiNWYXPX/P8WWwl1DoLH5CbvDjjcWQw5J0zADhgCUklOqA==}
 
@@ -2829,10 +2814,6 @@ packages:
     resolution: {integrity: sha512-FveZTNuGw04cxlAiWbzi6zTAL/lhehaWbTtgluJh4/E95DqMwTmha3KZN1aAWA8cFIhHzMZUvLevkw5Rqk+tSQ==}
     engines: {node: '>= 0.6'}
 
-  content-disposition@1.0.1:
-    resolution: {integrity: sha512-oIXISMynqSqm241k6kcQ5UwttDILMK4BiurCfGEREw6+X9jkkpEe5T9FZaApyLGGOnFuyMWZpdolTXMtvEJ08Q==}
-    engines: {node: '>=18'}
-
   conventional-changelog-angular@8.3.0:
     resolution: {integrity: sha512-DOuBwYSqWzfwuRByY9O4oOIvDlkUCTDzfbOgcSbkY+imXXj+4tmrEFao3K+FxemClYfYnZzsvudbwrhje9VHDA==}
     engines: {node: '>=18'}
@@ -3411,10 +3392,6 @@ packages:
     deprecated: Old versions of glob are not supported, and contain widely publicized security vulnerabilities, which have been fixed in the current version. Please update. Support for old versions may be purchased (at exorbitant rates) by contacting i@izs.me
     hasBin: true
 
-  glob@13.0.6:
-    resolution: {integrity: sha512-Wjlyrolmm8uDpm/ogGyXZXb1Z+Ca2B8NbJwqBVg0axK9GbBeoS7yGV6vjXnYdGm6X53iehEuxxbyiKp8QmN4Vw==}
-    engines: {node: 18 || 20 || >=22}
-
   global@4.4.0:
     resolution: {integrity: sha512-wv/LAoHdRE3BeTGz53FAamhGlPLhlssK45usmGFThIi4XqnBmjKQ16u+RNbP7WvigRZDxUsM0J3gcQ5yicaL0w==}
 
@@ -3679,10 +3656,6 @@ packages:
   json-schema-ref-resolver@3.0.0:
     resolution: {integrity: sha512-hOrZIVL5jyYFjzk7+y7n5JDzGlU8rfWDuYyHwGa2WA8/pcmMHezp2xsVwxrebD/Q9t8Nc5DboieySDpCp4WG4A==}
 
-  json-schema-resolver@3.0.0:
-    resolution: {integrity: sha512-HqMnbz0tz2DaEJ3ntsqtx3ezzZyDE7G56A/pPY/NGmrPu76UzsWquOpHFRAf5beTNXoH2LU5cQePVvRli1nchA==}
-    engines: {node: '>=20'}
-
   json-schema-traverse@1.0.0:
     resolution: {integrity: sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==}
 
@@ -4122,9 +4095,6 @@ packages:
   oniguruma-to-es@3.1.1:
     resolution: {integrity: sha512-bUH8SDvPkH3ho3dvwJwfonjlQ4R80vjyvrU8YpxuROddv55vAEJrTuCuCVUhhsHbtlD9tGGbaNApGQckXhS8iQ==}
 
-  openapi-types@12.1.3:
-    resolution: {integrity: sha512-N4YtSYJqghVu4iek2ZUvcN/0aqH1kRDuNqzcycDxhOUpg7GdvLa2F3DgS6yBNhInhv2r/6I0Flkn7CqL8+nIcw==}
-
   p-each-series@3.0.0:
     resolution: {integrity: sha512-lastgtAdoH9YaLyDa5i5z64q+kzOcQHsQ5SsZJD3q0VEyI8mq872S3geuNbRUQLVAE9siMfgKrpj7MloKFHruw==}
     engines: {node: '>=12'}
@@ -6110,33 +6080,6 @@ snapshots:
       fastq: 1.20.1
       glob: 11.1.0
 
-  '@fastify/static@9.0.0':
-    dependencies:
-      '@fastify/accept-negotiator': 2.0.1
-      '@fastify/send': 4.1.0
-      content-disposition: 1.0.1
-      fastify-plugin: 5.1.0
-      fastq: 1.20.1
-      glob: 13.0.6
-
-  '@fastify/swagger-ui@5.2.5':
-    dependencies:
-      '@fastify/static': 9.0.0
-      fastify-plugin: 5.1.0
-      openapi-types: 12.1.3
-      rfdc: 1.4.1
-      yaml: 2.8.3
-
-  '@fastify/swagger@9.7.0':
-    dependencies:
-      fastify-plugin: 5.1.0
-      json-schema-resolver: 3.0.0
-      openapi-types: 12.1.3
-      rfdc: 1.4.1
-      yaml: 2.8.3
-    transitivePeerDependencies:
-      - supports-color
-
   '@iconify-json/simple-icons@1.2.74':
     dependencies:
       '@iconify/types': 2.0.0
@@ -7845,8 +7788,6 @@ snapshots:
     dependencies:
       safe-buffer: 5.2.1
 
-  content-disposition@1.0.1: {}
-
   conventional-changelog-angular@8.3.0:
     dependencies:
       compare-func: 2.0.0
@@ -8453,12 +8394,6 @@ snapshots:
       package-json-from-dist: 1.0.1
       path-scurry: 2.0.2
 
-  glob@13.0.6:
-    dependencies:
-      minimatch: 10.2.4
-      minipass: 7.1.3
-      path-scurry: 2.0.2
-
   global@4.4.0:
     dependencies:
       min-document: 2.19.2
@@ -8733,14 +8668,6 @@ snapshots:
     dependencies:
       dequal: 2.0.3
 
-  json-schema-resolver@3.0.0:
-    dependencies:
-      debug: 4.4.3
-      fast-uri: 3.1.0
-      rfdc: 1.4.1
-    transitivePeerDependencies:
-      - supports-color
-
   json-schema-traverse@1.0.0: {}
 
   json-with-bigint@3.5.8: {}
@@ -9083,8 +9010,6 @@ snapshots:
       regex: 6.1.0
       regex-recursion: 6.0.2
 
-  openapi-types@12.1.3: {}
-
   p-each-series@3.0.0: {}
 
   p-event@6.0.1:
@@ -10301,7 +10226,8 @@ snapshots:
 
   yallist@3.1.1: {}
 
-  yaml@2.8.3: {}
+  yaml@2.8.3:
+    optional: true
 
   yargs-parser@18.1.3:
     dependencies: