Christian Gick 7087fbf733 fix(bot): prevent dangling preamble + force final summary on tool-loop exhaustion ...

Two compounding streaming bugs caused the bot to render only a
'Gute Frage — lass mich' preamble when claude-haiku spent all
MAX_TOOL_ITERATIONS=5 on tool calls without producing final text.

1. Preamble leak: stream posted first content delta as soon as it
   crossed MIN_CHARS_BEFORE_POST=20, before tool_calls deltas had
   arrived. Added 1.2s TOOL_GRACE_SECONDS buffer so the suppression
   path catches the upcoming tool_calls before we go visible.

2. No final synthesis: when the loop exhausted iterations while still
   requesting tools, reply was empty and the orphaned preamble stayed
   on screen. Added a forced tools=None final call to make the model
   summarize accumulated tool results before send/edit.

2026-04-18 05:25:12 +00:00

210 KiB

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