Update Jekyll deployment workflow and add documentation for benchmarks

- Changed the Jekyll source directory from `./` to `./docs` for proper site generation.
- Introduced a new `benchmarks.md` file to document benchmark reports and release summaries.
- Created an `index.md` file for the CacheKit documentation site, linking to key resources and guides.

Author: TKorr

.github/workflows/jekyll-gh-pages.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Build with Jekyll
         uses: actions/jekyll-build-pages@v1
         with:
-          source: ./
+          source: ./docs
           destination: ./_site
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v4

docs/benchmarks.md

@@ -0,0 +1,14 @@
+# Benchmarks
+
+This page links to the latest benchmark reports and the release-tag snapshots.
+
+- [Latest benchmarks](../benchmarks/latest/)
+- [Release benchmarks (by tag)](../benchmarks/)
+
+For local runs and raw numbers, see `benches/README.md`.
+
+## Release summary
+
+| Release | Date | Environment | Micro-ops (ns/op) | Policy throughput (Melem/s) | Workload throughput (Melem/s) | Report link |
+| --- | --- | --- | --- | --- | --- | --- |
+| v0.1.0 | 2025-01-12 | TBD | TBD | TBD | TBD | TBD |

docs/index.md

@@ -0,0 +1,22 @@
+# CacheKit Docs
+
+Welcome to the CacheKit documentation site.
+
+## Getting started
+
+- [Design overview](design.md)
+- [Policy overview](policies/README.md)
+- [Policy roadmap](policies/roadmap/README.md)
+- [Policy data structures](policy-ds/README.md)
+- [Policy survey and tradeoffs](policies.md)
+- [Benchmarks](benchmarks.md)
+
+## Release and maintenance
+
+- [Release checklist](release-checklist.md)
+- [Documentation style guide](style-guide.md)
+
+## Misc
+
+- [Integration notes](integration.md)
+- [Metrics notes](metrics.md)