`./devcheck` export points to a file not in the published `files` allowlist

[Shinrai]

Surfaced by Copilot on PR #12.

package.json declared a ./devcheck → ./devcheck.mjs export, but devcheck.mjs isn't in the published files allowlist (verified via npm pack --dry-run), so import "@cldmv/holdmytask/devcheck" 404s for consumers. devcheck.mjs is an internal dev-time guard that index.mjs loads via a relative import, not the package export — nothing imports the subpath.

Fixed directly (removed the vestigial export) rather than left as a tracked issue:

• holdmytask: f3f39ef on PR fix: namespace dev condition to holdmytask-dev; correct + test devcheck #12.
• @cldmv/uuid (same vestigial export): 6f46387 on fix(devcheck): condition-only trigger + execArgv detection + scoped-install guard uuid#10.

@cldmv/slothlet has the same export; it'll be handled alongside CLDMV/slothlet#270. Closing.