site: landing page overhaul, blog, benchmarks, numa.rs domain

Landing page:
- Split features into 3-layer card layout (Block & Protect, Developer Tools, Self-Sovereign DNS)
- Add DoH and conditional forwarding to comparison table
- Fix performance claim (2.3M → 2.0M qps to match benchmarks)
- Add all 3 install methods (brew, cargo, curl)
- Add OG tags + canonical URL for numa.rs
- Fix code block whitespace rendering
- Update roadmap with .onion bridge phase

Blog:
- Add "Building a DNS Resolver from Scratch in Rust" post
- Blog index + template for future posts

Other:
- CNAME for GitHub Pages (numa.rs)
- Benchmark results (bench/results.json)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

bench/results.json

@@ -0,0 +1,50 @@
+{
+  "Numa(cold)": {
+    "avg": 9,
+    "p50": 9,
+    "p99": 18,
+    "min": 8,
+    "max": 18,
+    "count": 50
+  },
+  "Numa(cached)": {
+    "avg": 0,
+    "p50": 0,
+    "p99": 0,
+    "min": 0,
+    "max": 0,
+    "count": 50
+  },
+  "System": {
+    "avg": 9.1,
+    "p50": 8,
+    "p99": 44,
+    "min": 7,
+    "max": 44,
+    "count": 50
+  },
+  "Google": {
+    "avg": 22.4,
+    "p50": 17,
+    "p99": 37,
+    "min": 13,
+    "max": 37,
+    "count": 50
+  },
+  "Cloudflare": {
+    "avg": 18.7,
+    "p50": 14,
+    "p99": 132,
+    "min": 12,
+    "max": 132,
+    "count": 50
+  },
+  "Quad9": {
+    "avg": 14.5,
+    "p50": 13,
+    "p99": 43,
+    "min": 12,
+    "max": 43,
+    "count": 50
+  }
+}