Update content & design (#75)

Reviewed-on: https://home.schmelczer.dev/git/git/andras/schmelczer-dev/pulls/75

src/lib/site.ts

@@ -4,10 +4,11 @@ import { getImage } from 'astro:assets';
 import type { ImageMetadata } from 'astro';
 
 export const site = {
+  brand: 'schmelczer.dev',
   name: 'Andras Schmelczer',
-  title: 'Andras Schmelczer — Software engineer',
+  title: 'Andras Schmelczer, Software engineer',
   description:
-    'Andras Schmelczer writes about software systems, AI deployment, graphics, simulations, and tools.',
+    'Notebook of someone who keeps reaching for the same two moves: let the hard constraint pick the data structure, then keep the API small enough to defend.',
   url: 'https://schmelczer.dev',
   email: 'andras@schmelczer.dev',
   github: 'https://github.com/schmelczer',
@@ -30,7 +31,7 @@ export const navItems: readonly NavItem[] = [
   { href: '/articles/', label: 'Articles' },
   { href: '/projects/', label: 'Projects' },
   { href: '/about/', label: 'About' },
-  { href: '/tags/', label: 'Tags' },
+  { href: '/tags/', label: 'Tags', footerOnly: true },
   { href: '/rss.xml', label: 'RSS', footerOnly: true },
 ];
 
@@ -155,13 +156,14 @@ export function buildPersonJsonLd(extra?: Record<string, unknown>) {
 // Responsive image config shared by entry listings. Centralized here so a
 // change to one breakpoint set is a single edit, not two component changes.
 export const ARTICLE_THUMBNAIL = {
-  widths: [120, 180, 240, 320, 480],
+  widths: [160, 240, 320, 480, 640],
   sizes: '(max-width: 700px) clamp(64px, 22vw, 80px), (max-width: 960px) 7rem, 8rem',
 };
 
 export const PROJECT_THUMBNAIL = {
-  widths: [240, 320, 480, 640, 800],
-  sizes: '(max-width: 700px) 7rem, (max-width: 960px) clamp(7rem, 18vw, 9.5rem), 19rem',
+  widths: [320, 480, 640, 800, 960, 1200, 1280],
+  sizes:
+    '(max-width: 700px) calc(100vw - 40px), (max-width: 960px) calc((100vw - 64px - 1rem) / 2), calc((min(100vw - 64px, 72rem) - 2rem) / 3)',
 };
 
 // Wraps `getImage` with the standard OG dimensions (1200x630 JPEG). Used by