chore(release): bump version to 0.6.13

Ship the hot-path extraction speedups (#66): selector hoisting, shared
Open Graph parsing, QuickJS gating + parsed-document reuse, and HTTP
connection-pool tuning. Byte-identical extraction output (verified).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 0xMassi

CHANGELOG.md

@@ -5,6 +5,11 @@ Format follows [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+## [0.6.13] - 2026-06-17
+
+### Performance
+- Faster content extraction with byte-identical output. The markdown noise filter no longer recompiles its CSS selectors on every element; the vertical extractors share a single Open Graph meta parse instead of re-scanning the page per field; the JavaScript sandbox is skipped entirely when a page has no JS-assigned data (and reuses the already-parsed document instead of re-parsing); and the HTTP client now tunes its connection pool (connect timeout, idle-pool reuse, keep-alive) for better connection reuse across requests.
+
 ## [0.6.12] - 2026-06-17
 
 ### Added

Cargo.lock

@@ -3,7 +3,7 @@ resolver = "2"
 members = ["crates/*"]
 
 [workspace.package]
-version = "0.6.12"
+version = "0.6.13"
 edition = "2024"
 license = "AGPL-3.0"
 repository = "https://github.com/0xMassi/webclaw"