fix: point docs badge and links to GitHub Pages instead of docs.rs

crates are not published to crates.io; docs.rs badge was showing not found.
Switch all documentation links to greysquirr3l.github.io/stygian and
add documentation field to both crate Cargo.toml files.

Author: greysquirr3l

README.md

@@ -232,4 +232,4 @@ Built with:
 
 **Status**: Active development | Version 0.1.1 | Rust 2024 edition | 842 tests | Linux + macOS
 
-For detailed documentation, see [docs.rs/stygian-graph](https://docs.rs/stygian-graph) and [docs.rs/stygian-browser](https://docs.rs/stygian-browser).
+For detailed documentation, see the [project docs site](https://greysquirr3l.github.io/stygian).

crates/stygian-browser/Cargo.toml

@@ -6,6 +6,7 @@ rust-version.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
+documentation = "https://greysquirr3l.github.io/stygian"
 readme = "README.md"
 description = "Anti-detection browser automation library for Rust with CDP stealth features"
 keywords = ["browser", "automation", "scraping", "anti-detection", "cdp"]

crates/stygian-graph/Cargo.toml

@@ -6,6 +6,7 @@ rust-version.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
+documentation = "https://greysquirr3l.github.io/stygian"
 description = "High-performance graph-based web scraping engine with AI extraction, multi-modal support, and anti-bot capabilities"
 keywords = ["scraping", "web-scraping", "graph", "ai", "extraction"]
 categories = ["web-programming", "network-programming", "asynchronous"]

crates/stygian-graph/README.md

@@ -3,7 +3,7 @@
 High-performance, graph-based web scraping engine treating pipelines as DAGs with pluggable service modules.
 
 [![Crates.io](https://img.shields.io/crates/v/stygian-graph.svg)](https://crates.io/crates/stygian-graph)
-[![Documentation](https://docs.rs/stygian-graph/badge.svg)](https://docs.rs/stygian-graph)
+[![Documentation](https://img.shields.io/badge/docs-github.io-blue)](https://greysquirr3l.github.io/stygian)
 [![License: AGPL v3](https://img.shields.io/badge/License-AGPL_v3-blue.svg)](../../LICENSE)
 [![Tests](https://img.shields.io/badge/tests-209%20passing-brightgreen)](https://github.com/greysquirr3l/stygian/actions)
 [![Coverage](https://img.shields.io/badge/coverage-~72%25-yellowgreen)](https://github.com/greysquirr3l/stygian/actions)