feat(config): add Blume docs site configuration

blume.config.ts

@@ -0,0 +1,49 @@
+import { defineConfig } from "blume";
+
+export default defineConfig({
+  title: "Sonr Crypto",
+  description:
+    "Developer documentation for the Sonr cryptography library — curves, threshold signatures, MPC, zero-knowledge proofs, and identity primitives in Go.",
+
+  github: {
+    owner: "sonr-io",
+    repo: "crypto",
+    branch: "main",
+  },
+
+  theme: {
+    accent: "teal",
+    radius: "md",
+    mode: "system",
+  },
+
+  navigation: {
+    sidebar: {
+      display: "group",
+    },
+  },
+
+  search: {
+    provider: "orama",
+  },
+
+  lastModified: true,
+
+  seo: {
+    og: { enabled: true },
+    sitemap: true,
+    robots: true,
+    structuredData: true,
+  },
+
+  ai: {
+    llmsTxt: true,
+  },
+
+  // GitHub Pages project site: served from https://sonr-io.github.io/crypto
+  deployment: {
+    output: "static",
+    site: "https://sonr-io.github.io",
+    base: "/crypto",
+  },
+});