fix: auto-resolve project name from image, fix global scroll

- Auto-fill project name from image path when browsing
- Prevent html/body scroll jump with overflow: hidden

web/src/app.css

@@ -3,13 +3,14 @@
 
 /* ── Base Styles ──────────────────────────────────────────────────── */
 
-html {
+html, body {
+  margin: 0;
+  padding: 0;
+  height: 100%;
+  overflow: hidden;
   font-family: var(--font-family-sans);
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
-}
-
-body {
   background-color: var(--surface-page);
   color: var(--text-primary);
 }

web/src/routes/projects/+page.svelte

@@ -56,9 +56,19 @@
 		}
 	}
 
+	function nameFromImage(imageRef: string): string {
+		// Extract last path segment: "git.example.com/owner/my-app" → "my-app"
+		const parts = imageRef.split('/');
+		return parts[parts.length - 1].toLowerCase().replace(/[^a-z0-9-]/g, '-');
+	}
+
 	function selectBrowsedImage(image: RegistryImage & { registryName: string }) {
 		formImage = image.full_ref;
 		formRegistry = image.registryName;
+		// Auto-fill name if empty.
+		if (!formName.trim()) {
+			formName = nameFromImage(image.full_ref);
+		}
 		showImageBrowser = false;
 	}