UnigramDev/Unigram/develop • 278ca6e • 4 files, +61/-42
Clear the remaining hygiene items in the call managers

The tgcalls version registrations had internal linkage but lived in a header, so
a second includer would have registered every version twice; they move into
VoipManager.cpp. The #ifndef _WIN32 arm of the config initialiser could never
have compiled and is gone.

A screencast runs a second group manager alongside the main one and both opened
tgcalls_group.txt, interleaving into one file; the screencast writes its own now.

EmitJoinPayload no longer completes when there is no instance to emit from. The
empty payload it used to hand back only got the caller as far as a join the
server would reject, and it did it on the calling thread rather than the one the
success path answers on.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

UnigramDev/Unigram/develop • 5fb96f2 • 5 files, +309/-1
Base service message for community add/remove

UnigramDev/Unigram/develop • 03513e4 • 2 files, +22/-4
Let a null incoming video sink reach tgcalls

Skipping out early on null was wrong twice. It left m_incomingVideoOutput
pointing at the sink the caller had just asked to detach, and it swallowed the
one thing a null is good for: setIncomingVideoOutput also assigns _currentSink,
which every newly negotiated video channel is handed on creation, so a channel
appearing after the detach re-attached the old sink.

Null flows through as an empty shared_ptr now. The dedupe check handles it
without a special case, since two nulls in a row compare equal.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

UnigramDev/Unigram/develop • 16ee8b2 • 2 files, +26/-2
Set responseTimestamp on every broadcast part status

NotReady is precisely the status tgcalls reads responseTimestamp on, to decide
where to restart a stream that has not begun yet, and it was only ever set on
the Success path — so it arrived as zero. The caller had been supplying it all
along and we dropped it.

It is also the one timestamp in this API measured in seconds rather than
milliseconds; tgcalls multiplies it back up by 1000. We passed milliseconds
straight through, a thousand times too large. Converting at the tgcalls boundary
keeps the WinRT surface consistently milliseconds, which is what
requestCurrentTime already expects.

Found by re-reading the commit that started reporting empty parts as NotReady,
which is what made this reachable.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

#unigram