06cd80d1bd
Prettier pads markdown table cells for column alignment, which turns any content change into a table-wide realignment diff. Markdown was only in prettierignore for packages/kilo-vscode/; the root formatter still repadded docs elsewhere (e.g. TESTING.md, kilo-docs, AGENTS.md). Adds *.md to the root .prettierignore, documents the convention in AGENTS.md, and adds script/check-md-table-padding.ts + a workflow to enforce it. Existing padded tables in Kilo-owned docs have been rewritten via the script's --fix mode.