Tightened before the India tab lands. A built bundle that READS globalThis.DXM_PREVIEW_UNRELEASED would ship the
withheld path itself, behind a global that any embedding page or console can set before the element loads, so
withheld content would print from production.
- A: no file under public/ names the flag at all (was: no assignment).
- B: every source line that reads OR writes it carries import.meta.env.DEV (was: writes only), so each read
compiles away in a build.
- Self-test: a built setter, a built read, an unguarded source setter and an unguarded source read must each
fail; the DEV-guarded forms and comments pass.
globalThis.DXM_PREVIEW_UNRELEASED lets a page show what is withheld from the public (the whole-India country
poster). defineMapElement.js, every element's first module, now sets it behind import.meta.env.DEV: true only
under the Vite dev server (the pilot's hot-reload preview), a compile-time false in every build, so the build
drops the line. The built tree, which goes to the research landing and DX Life's /dx-maps, never carries it.
check:preview-flag-dev-only (gates:pre; self-test in gates:post): no file under public/ assigns the flag in any
spelling a minifier writes, and every source assignment is behind import.meta.env.DEV (2 planted defects).
