The delivery target parser uses split(':', 1) which only splits on the
first colon. For the documented format platform:chat_id:thread_id
(e.g. 'telegram:-1001234567890:17585'), thread_id gets munged into
chat_id and is never extracted.
Fix: split(':', 2) to correctly extract all three parts. Also fix
to_string() to include thread_id for proper round-tripping.
The downstream plumbing in _deliver_to_platform() already handles
thread_id correctly (line 292-293) — it just never received a value.
Follow-up to 669c60a6 (cherry-pick of PR #2187, fixes#2177).
The original fix emits a "\n\n" delta immediately after every
_execute_tool_calls() invocation. When the model runs multiple
consecutive tool iterations before producing text (common with
search → read → analyze flows), each iteration appends its own
paragraph break, resulting in 4-6+ blank lines before the actual
response.
Replace the immediate delta with a deferred flag
(_stream_needs_break). _fire_stream_delta() checks the flag and
prepends a single "\n\n" only when the first real text delta
arrives, so multiple back-to-back tool iterations still produce
exactly one paragraph break.
MacroAnarchy