The first build of #3860 failed at type-check because the generated
`lib/docs-content.generated.ts` is gitignored (regenerated on every
build) and CI's `type-check` step runs before `build`. Two fixes:
- web-ci.yml: explicit `Generate docs content from repo-root docs/`
step right after `bun install` so format-check, lint, and type-check
all see the file.
- web/package.json: add `prepare` lifecycle script. `bun install`
invokes it automatically, so a fresh local checkout boots into a
working state too.
Build still re-runs the generator via prebuild, so docs/ edits land in
the bundle without an explicit dev action.
YeonGyu-Kim
65fc0d9434