Fix CSS: move stylesheet to assets/main.scss so minima actually loads it

The page loads assets/main.css (minima's default) but our custom CSS was
at assets/css/style.css — a separate file never referenced by any page.
Moving to assets/main.scss overrides minima's template so our wrapper
width, version label styling, and all other customizations take effect.

Bump site version to 1.0.2.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: deftio

docs/_config.yml

@@ -1,5 +1,5 @@
 title: TriePack
-version: "1.0.1"
+version: "1.0.2"
 description: Compressed trie-based dictionary format for fast, compact key-value storage
 theme: minima
 baseurl: "/triepack"