feat: add "What Is a CRQC?" blog post and fix Q-Day quantum risk image

[0xRichard-ship-it]

Adds a new draft post explaining CRQCs, qubit/error-correction basics, attack timing (at-rest vs on-spend), Mosca's inequality, and AI-assisted progress toward breaking ECDSA, in all supported locales. Published as draft (published: false) pending review.

Also swaps in a higher-resolution version of the "practical quantum risk" diagram in the existing "What Is Q-Day?" post, and adds a "crqc" tag to the i18n blog-tag dictionaries across all locales.

[n13]

Reviewer model: GPT 5.6 Sol

Verdict: REQUEST_CHANGES

Blocking finding:

• website/src/contents/blogs/en-US/what-is-a-crqc.mdx:100 (and the corresponding YouTubeEmbed line in all eight translations): every newly added what-is-a-crqc.mdx fails the repository's configured Prettier check. Prettier rewrites the one-line component invocation to its multiline form. The Code Quality workflow runs bun run format:check, so this head will fail that gate once the workflow's separate startup failure is resolved. Please run the repository formatter on all nine new MDX files and commit the result.

Validation:

• Reviewed exact head ee80ef065036ece7c7635c78b1320ebfcbdfec9d against base b62c838ba42d8731a02ed2b4afc5ce4fc7e02106.
• git diff --check passed.
• Focused Prettier check failed on all nine new MDX files. The zh-CN.json warning is in unchanged pre-existing sections and is not part of this finding.
• SITE_BASE_URL=http://localhost:3000 npm run build passed with Astro 6.0.7; the production output correctly excludes the draft article and crqc tag routes.
• The linked primary sources support the article's quoted resource estimates and AI/error-correction claims; no additional blocking content issue was found.

[n13]

Reviewer model: GPT 5.6 Sol

Verdict: APPROVE

The blocking formatting issue from the previous review is resolved. I found no remaining blocking issues.

Validation:

• Reviewed exact head e70c770b570a524c8f3fd07980246297bc12e4bc against base b62c838ba42d8731a02ed2b4afc5ce4fc7e02106, including the full diff and the incremental formatting commit.
• git diff --check passed.
• Focused Prettier checks pass for all nine new what-is-a-crqc.mdx files; all nine locale JSON files parse and define the new crqc label.
• bun test src/utils/blog-posts.test.ts passed (7 tests).
• SITE_BASE_URL=http://localhost:3000 bun run build passed and emitted neither the draft article nor crqc tag routes.
• The new assets render correctly, and spot-checks of the linked primary sources support the article's key resource-estimate and AI/error-correction claims.

GitHub currently reports no checks for this branch. The repository-wide format and SEO-meta commands still report failures in unchanged baseline files/fields; none are introduced by this PR's changed lines.