feat: rebrand Hemmelig to paste.es for cloudhost.es

- Set Spanish as default language with ephemeral/encrypted privacy focus
- Translate all user-facing strings and legal pages to Spanish
- Replace Norwegian flag with Spanish flag in footer
- Remove Hemmelig/terces.cloud links, add cloudhost.es sponsorship
- Rewrite PrivacyPage: zero data collection, ephemeral design emphasis
- Rewrite TermsPage: Spanish law, RGPD, paste.es/CloudHost.es references
- Update PWA manifest, HTML meta tags, package.json branding
- Rename webhook headers to X-Paste-Event / X-Paste-Signature
- Update API docs title and contact to paste.es / cloudhost.es

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/manifest.json

@@ -0,0 +1,58 @@
+{
+    "name": "paste.es",
+    "short_name": "paste.es",
+    "theme_color": "#deefea",
+    "background_color": "#231e23",
+    "display": "standalone",
+    "orientation": "portrait",
+    "scope": "/",
+    "start_url": "/",
+    "icons": [
+        {
+            "src": "icons/icon-72x72.png",
+            "sizes": "72x72",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/icon-96x96.png",
+            "sizes": "96x96",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/icon-128x128.png",
+            "sizes": "128x128",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/icon-144x144.png",
+            "sizes": "144x144",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/icon-152x152.png",
+            "sizes": "152x152",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/icon-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/maskable-icon-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "icons/icon-384x384.png",
+            "sizes": "384x384",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/icon-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ]
+}

public/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow: