docs: add badges, shields, and logo placeholder to README

Two badge rows:
- Row 1 (status): CI build, release tag, test count, crate count,
  language (Rust), license (MIT/Apache-2.0), docs link, mdBook link
- Row 2 (capabilities): BLAKE3, BoringSSL TLS impersonation,
  CDP 17 stealth patches, WARC++, 10K pages determinism, Rebrowser 10/10

Colors match the site theme: #4f46e5 (accent), #16a34a (pass),
#e11d48 (stealth/rose), #0f172a (dark).

Fixed stale test count (301 -> 288).
Added logo placeholder for when artwork is ready.

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

Author: copyleftdev

README.md

@@ -1,8 +1,36 @@
-# Palimpsest
-
-A deterministic crawl kernel. Same input + same seed = identical crawl, identical artifacts, identical replay.
-
-Not a crawler. Not a Wayback clone. The canonical memory layer of the web. See [CLAUDE.md](CLAUDE.md) for the full philosophy.
+<p align="center">
+  <em>Place logo here</em>
+</p>
+
+<h1 align="center">Palimpsest</h1>
+
+<p align="center">
+  <strong>Deterministic crawl kernel</strong> &mdash; same seed, identical crawl, identical replay.
+</p>
+
+<p align="center">
+  <a href="https://github.com/copyleftdev/palimpsest/actions"><img src="https://img.shields.io/github/actions/workflow/status/copyleftdev/palimpsest/ci.yml?branch=main&style=flat-square&label=CI" alt="CI"></a>
+  <a href="https://github.com/copyleftdev/palimpsest/releases"><img src="https://img.shields.io/github/v/tag/copyleftdev/palimpsest?style=flat-square&label=release&color=4f46e5" alt="Release"></a>
+  <img src="https://img.shields.io/badge/tests-288-16a34a?style=flat-square" alt="Tests">
+  <img src="https://img.shields.io/badge/crates-15-4f46e5?style=flat-square" alt="Crates">
+  <img src="https://img.shields.io/badge/language-Rust-dea584?style=flat-square&logo=rust" alt="Rust">
+  <a href="https://github.com/copyleftdev/palimpsest/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-MIT%2FApache--2.0-blue?style=flat-square" alt="License"></a>
+  <a href="https://copyleftdev.github.io/palimpsest/"><img src="https://img.shields.io/badge/docs-GitHub%20Pages-f8f7f4?style=flat-square&logo=github" alt="Docs"></a>
+  <a href="https://copyleftdev.github.io/palimpsest/book/"><img src="https://img.shields.io/badge/book-mdBook-4f46e5?style=flat-square&logo=mdbook" alt="Book"></a>
+</p>
+
+<p align="center">
+  <img src="https://img.shields.io/badge/BLAKE3-content%20addressed-0f172a?style=flat-square" alt="BLAKE3">
+  <img src="https://img.shields.io/badge/BoringSSL-TLS%20impersonation-e11d48?style=flat-square" alt="BoringSSL">
+  <img src="https://img.shields.io/badge/CDP-17%20stealth%20patches-e11d48?style=flat-square" alt="CDP Stealth">
+  <img src="https://img.shields.io/badge/WARC++-ISO%2028500-475569?style=flat-square" alt="WARC++">
+  <img src="https://img.shields.io/badge/determinism-10K%20pages%20proven-16a34a?style=flat-square" alt="Determinism">
+  <img src="https://img.shields.io/badge/Rebrowser-10%2F10-16a34a?style=flat-square" alt="Rebrowser">
+</p>
+
+---
+
+Not a crawler. Not a Wayback clone. The canonical memory layer of the web. See [CLAUDE.md](CLAUDE.md) for the full philosophy, or the [documentation site](https://copyleftdev.github.io/palimpsest/) for the full story.
 
 ## Prerequisites
 
@@ -257,7 +285,7 @@ palimpsest_frontier_pushes
 ## Testing
 
 ```bash
-# Run all tests (301 tests)
+# Run all tests (288 tests)
 cargo test --workspace
 
 # Simulation tests (determinism verification)