feat: replace markdown-table with tabled for proper column alignment (#35)

Replace markdown-table crate with tabled 0.20.0 to fix table rendering
issues where separator lines did not align with column widths.

The tabled crate properly calculates column widths and generates aligned
markdown tables with correct separator characters.

Author: tembleking

AGENTS.md

@@ -517,6 +517,7 @@ To keep history clean and reviews manageable:
   * `feat(scope): message`
   * `fix(scope): message`
   * `refactor: message`
+* Commits should only have a title, no body/description.
 * Before opening a commit, run at least:
   * `just fmt`
   * `just lint`