Jesse Hallam 245e311a41 [MM-57807] Graduate Hardened Mode out of Experimental Features (#38022)
* [MM-57807] Graduate Hardened Mode to Environment > Web Server

Hardened Mode is a production security control, but it was only reachable
from System Console > Experimental > Features, which led admins to doubt
it was supported for production use.

Move Hardened Mode to Environment > Web Server, where the other
server-side transport and API hardening toggles already live, and
reclassify its access tag from experimental_features to
environment_web_server so it is gated by
sysconsole_{read,write}_environment_web_server.

The config key is renamed from ExperimentalEnableHardenedMode to
EnableHardenedMode. On first load after upgrade, SetDefaults migrates any
existing ExperimentalEnableHardenedMode: true to the new key and clears
the old one, so no manual config change is required.

* Fix hyphen in hardened mode docs (user-facing)

* Initialize ExperimentalEnableHardenedMode to false when nil

Symmetric with other *bool settings in SetDefaults. The deprecated field
is now always non-nil after initialization; its value still seeds
EnableHardenedMode when that field is unset.

* fixup! Initialize ExperimentalEnableHardenedMode to false when nil

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
2026-08-27 11:20:05 -06:00

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