Move media assets into Astro locations

public/media/video/ad_astra.vtt

@@ -0,0 +1,13 @@
+WEBVTT
+
+00:00.000 --> 00:04.000
+No spoken dialogue. Game audio only.
+
+00:04.000 --> 00:35.000
+The Ad Astra handheld board runs the game on a small OLED display.
+
+00:35.000 --> 01:05.000
+The player controls the game through the IR input while the engine updates the display in real time.
+
+01:05.000 --> 01:34.600
+The clip continues showing gameplay on the custom ATtiny85-based board.

public/robots.txt

@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://schmelczer.dev/sitemap-index.xml

public/site.webmanifest

@@ -0,0 +1,23 @@
+{
+  "name": "Andras Schmelczer",
+  "short_name": "Schmelczer",
+  "description": "Andras Schmelczer writes about software systems, AI deployment, graphics, simulations, and tools.",
+  "lang": "en",
+  "id": "/",
+  "categories": ["education", "personal", "technology"],
+  "icons": [
+    { "src": "/android-chrome-192x192.png", "sizes": "192x192", "type": "image/png" },
+    { "src": "/android-chrome-512x512.png", "sizes": "512x512", "type": "image/png" },
+    {
+      "src": "/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
+    }
+  ],
+  "theme_color": "#fbfaf7",
+  "background_color": "#fbfaf7",
+  "display": "standalone",
+  "start_url": "/",
+  "scope": "/"
+}