feat(landing): switch heading font to Block Blueprint

Replace Pixelify Sans with Block Blueprint as the heading font (theme.headFont).
Block Blueprint isn't on Google Fonts, so it's vendored straight from 1001fonts
(License: 1001Fonts Free For Personal Use — fine for this private friends'
server) as a TTF, with a hand-written @font-face appended to fonts.css. The
vendor step is added to fetch-fonts.sh (runs after the Google rewrite so it
survives re-runs). Pixelify stays available as a HEAD_FONTS option + the
hard-coded fallback.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

landing/public/fonts/fonts.css

@@ -268,3 +268,13 @@
   src: url(/fonts/pxiKyp0ihIEF2isfFJU.woff2) format('woff2');
   unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
 }
+/* Block Blueprint — vendored from 1001fonts (NOT on Google Fonts; appended by
+   fetch-fonts.sh after the Google rewrite). License: 1001Fonts Free For Personal
+   Use. Single weight, TTF (no woff2 toolchain on the build box). */
+@font-face {
+  font-family: 'Block Blueprint';
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+  src: url(/fonts/BlockBlueprint.ttf) format('truetype');
+}

landing/src/data/site.ts

@@ -120,12 +120,12 @@ export const site = {
   // Design knobs (replace the design's in-browser TweaksPanel). Baked at build.
   //   mood:     "grass" | "nether" | "end"
   //   hero:     "centered" | "split" | "spotlight"
-  //   headFont: "pixelify" | "8bit" | "silkscreen"
+  //   headFont: "blockblueprint" | "pixelify" | "8bit" | "silkscreen"
   //   dust:     floating pixel particles in the hero
   theme: {
     mood: "grass",
     hero: "centered",
-    headFont: "pixelify",
+    headFont: "blockblueprint",
     dust: true,
   },
 
@@ -216,6 +216,7 @@ export const LITERALS = {
 
 // Head-font CSS stacks, keyed by theme.headFont.
 export const HEAD_FONTS: Record<string, string> = {
+  blockblueprint: "'Block Blueprint', system-ui, sans-serif",
   pixelify: "'Pixelify Sans', system-ui, sans-serif",
   "8bit": "'Press Start 2P', monospace",
   silkscreen: "'Silkscreen', system-ui, sans-serif",

tooling/fetch-fonts.sh

@@ -41,4 +41,30 @@ echo "→ writing fonts.css (URLs rewritten to /fonts/…)"
 # Rewrite absolute gstatic URLs to local /fonts/<basename>.
 echo "$raw" | sed -E 's#https://fonts\.gstatic\.com/[^)]+/([^)/]+\.woff2)#/fonts/\1#g' > "$out/fonts.css"
 
+# Block Blueprint — the heading font. NOT on Google Fonts, so it can't ride the
+# css2 request above; vendored straight from 1001fonts (License: 1001Fonts Free
+# For Personal Use — fine for this private friends' server). TTF only, no woff2
+# (no woff2 toolchain assumed). Appended AFTER the rewrite so it survives re-runs.
+echo "→ vendoring Block Blueprint (1001fonts)"
+bb_ttf="$out/BlockBlueprint.ttf"
+if [ ! -f "$bb_ttf" ]; then
+  tmpzip="$(mktemp)"
+  curl -fsSL -A "$UA" -o "$tmpzip" "https://www.1001fonts.com/download/blockblueprint.zip"
+  unzip -p "$tmpzip" BlockBlueprint.ttf > "$bb_ttf"
+  rm -f "$tmpzip"
+  echo "   BlockBlueprint.ttf"
+fi
+cat >> "$out/fonts.css" <<'EOF'
+/* Block Blueprint — vendored from 1001fonts (NOT on Google Fonts; appended by
+   fetch-fonts.sh after the Google rewrite). License: 1001Fonts Free For Personal
+   Use. Single weight, TTF (no woff2 toolchain on the build box). */
+@font-face {
+  font-family: 'Block Blueprint';
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+  src: url(/fonts/BlockBlueprint.ttf) format('truetype');
+}
+EOF
+
 echo "✓ fonts vendored into $out"