Store the per-entity custom_fullname as a heap-allocated string that is
only created when a custom name is actually set, instead of an inline
std::string on every DeviceValue. Saves ~20 bytes per entity (hundreds to
~1000 entities), reclaiming internal heap on no-PSRAM boards.
Co-authored-by: Cursor <cursoragent@cursor.com>
The raw_value/computed_value handoff on WebSchedulerService is no longer
used now that command_message()/command_sendmail() compute synchronously,
so remove the members and the dead block in the scheduler loop.
Also drop the system/message special-case in dispatchCommand(): a
system/message whose value embeds a {url} now blocks at execution time
like any other internal command, so it should be offloaded to the
command worker task (large stack, off the main loop) instead of running
inline. Update the now-stale comments.
Co-authored-by: Proddy <proddy@users.noreply.github.com>
command_message() and command_sendmail() handed their value to
WebSchedulerService via raw_value and busy-waited up to 2s for the
scheduler loop (running in a separate task) to compute it. After the
scheduler was moved to run synchronously in the main loop, any caller
running in the main loop (MQTT-triggered commands, scheduler-triggered
commands) deadlocks: the loop that would compute raw_value cannot run
while the caller is blocking inside it. The 2s wait then times out and
system/message fails entirely (sendmail sends the un-computed body).
Compute the value directly with compute() instead, which restores
correct behaviour for all callers.
Co-authored-by: Proddy <proddy@users.noreply.github.com>
