update README.md & workflows (#192)

* update README.md

* ci: Remove paths-ignore filters from all workflows

Removes docs/ and *.md path exclusions so required checks always run,
preventing PRs from being blocked when only documentation files change.

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

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/codeql.yml

@@ -14,14 +14,8 @@ name: "CodeQL"
 on:
   push:
     branches: ["main"]
-    paths-ignore:
-      - "**/*.md"
-      - "docs/**"
   pull_request:
     branches: ["main"]
-    paths-ignore:
-      - "**/*.md"
-      - "docs/**"
 
 # PRs share a concurrency group (cancel/serialize); Pushes use unique groups to avoid cancellation/queuing
 concurrency: