The 1-second button hold that launches a standalone mode has been a
no-op on every platform except PM5 since e3511c535 ("Used HAL layer").
That commit repurposed the long press as a power-off gesture for PM5,
but commented out the RunMod() call unconditionally while guarding only
the new power-off code with #ifdef PM5. On PM3 builds the BUTTON_HOLD
branch therefore compiles down to an empty block, leaving CMD_STANDALONE
(the client's `hw standalone` command) as the only remaining entry point
to a standalone mode -- which defeats their purpose, since standalone
modes exist to run without a host attached.
Restore the call under #ifndef PM5 and move the PM5 power-off code to
the #else branch, matching the guard style used elsewhere in the same
commit.
Verified: PM3RDV4 and PM3GENERIC images now have two RunMod call sites
(AppMain + CMD_STANDALONE); PM5 still has one and retains its power-off
path.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
