301 Moved Permanently is cached by browsers effectively forever — when
we changed /<project> no-slash from "redirect to slash form" to
"serve project landing" earlier today, anyone who had visited the URL
under the prior behavior got stuck on the cached 301 indefinitely. No
server-side fix is possible after the fact; only a manual cache clear
in each user's browser releases the binding.
Demote every routing-shape redirect to 302 Found, which browsers do
not cache by default. Five sites:
- handler/directory.go: no-trailing-slash → slash on directory URLs
- main.go (4 sites):
.archive/ canonicalization (deep /<project>/<sub>/.../.archive/
path collapses to /<project>/.archive/)
reviewing/<tracking> no-slash → slash
reviewing/ default-app fallback to slash form
generic IsDir + no-slash + no-default-tool fallback
301 → 302 trades "permanent semantics in the protocol" for "we can
change our mind later without trapping users on old behavior." For
these routes — all of which are convention-driven shapes the server
owns — the latter is what we want.
Test updates: five httptest assertions switch from
http.StatusMovedPermanently → http.StatusFound, plus five comment
strings ("301" → "302").
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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