Caddy strips /api via `handle_path /api/*` before forwarding to membershipd,
so the SPA's GET /api/directory arrives as GET /directory. The route was
registered with the /api prefix, so the stripped request hit no route and
returned 404 in production: the directory never resolved and uniweb fell back
to short ids. Every other control-plane route is registered without the prefix;
this aligns directory with them.
The unit test passed despite the bug because it requested /api/directory, the
same wrong path as the registration. Corrected the request paths to /directory
so the test now exercises the real production path (verified: reverting the
registration to /api/directory now makes TestDirectoryGolden fail with 404).
Bump 0.15.0 -> 0.15.1.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
egutierrez
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