[geoffturk]

Summary

Nothing ran the type check: CI only runs the tests and the deploy only runs the esbuild-based build, which strips types without checking them. Meanwhile tsc --noEmit had been failing on TypeScript 6's deprecation of moduleResolution=node10 and, behind that, on four real type errors, and prettier flagged 60 files. This fixes each cause and adds npm run check to CI so it stays green.

Changes

• tsconfig.json: set ignoreDeprecations to "6.0". Switching to "bundler" resolution surfaces four more errors from Quartz's deep imports (remark-parse/lib, satori/wasm, preact/src/jsx, micromorph), so that migration waits for upstream.
• quartz.config.ts: analytics was the string "null", which is not a provider. It only disabled analytics because it matched no branch. Use the typed value null; the build still emits no analytics script.
• ArticleTitle.tsx: drop the import and parameter left unused by the local "Remove extra title" change.
• ofm.ts: pass the callout class list as an array, which is what the current hast property types expect. Rendered output is unchanged: class="callout note is-collapsible is-collapsed".
• .prettierignore: skip content (reviewed prose under CODEOWNERS) and docs (vendored Quartz documentation that prettier 3.9 also fails to format idempotently, splitting a sentence in hosting.md into three paragraphs). Format the one remaining file, README.md.
• ci.yaml: run npm run check before the tests.

Verification

In a node:22-slim container: npm run check clean, npm test with 78 of 78 passing, a full quartz build, a test page confirming collapsed and plain callouts render with the correct classes, and a grep confirming no analytics script in the output.