feat(page): initial landing page with dev tooling

Pre-launch landing page for The Lofty Project — a 501(c)(4) connecting
creative talent with leftist organizing. Includes hero with blur-in
line-by-line animation, three-pillar section (Talent/Media/Infrastructure),
interest signup buttons, and responsive design with fluid typography.

Tooling: Astro 5, Biome linting/formatting, Lefthook git hooks,
Commitizen with conventional commits, and project documentation.

astro.config.mjs

@@ -0,0 +1,9 @@
+// @ts-check
+import { defineConfig } from "astro/config";
+
+// https://astro.build/config
+export default defineConfig({
+    output: "static",
+    site: "https://lofty.org",
+    devToolbar: { enabled: false },
+});