fix(cli): render bold markdown in hyperframes docs - #7327

What

hyperframes docs <topic> renders **bold** spans instead of printing the literal ** markers.

Why

hyperframes docs compositions printed **data-composition-variables** and **array of declarations** as-is: the terminal markdown renderer in packages/cli/src/commands/docs.ts handled headings, bullets and backtick spans, but not bold.

Related work

Fixes #7277

How

formatInlineCode became formatInline: after the backtick replacement it replaces **text** with c.bold(text), the same colour helper the headings use, so a TTY gets bold text and a non-TTY (or NO_COLOR) gets the plain text with the markers removed, matching how the renderer already treats code spans. A lone ** with nothing between the pairs on one line is left alone. The per-line rendering moved into an exported renderMarkdownLines(content) that returns the lines, and renderMarkdown prints them, so the test can assert on the output without capturing console.log.

Test plan

• Unit tests added/updated: three cases in docs.test.ts (a bold span renders without ** and keeps its text; bold inside a list item and next to inline code; a bare 2 ** 3 line is unchanged). npx vitest run src/commands/docs.test.ts in packages/cli: 6 passed.
• Manual testing performed: oxlint and oxfmt clean on both files; node scripts/check-comment-citations.mjs and node scripts/comment-ratchet.mjs report nothing to flag; docs.ts has no new comment blocks.
• Documentation updated (if applicable): not needed.
• Comments follow CONTRIBUTING.md "Comments": the one comment edited names the two replacements in order; the bug and its reproduction are in this description.