Amplifier Unified 0.34.5

Reduce tool delays in long-running conversations

Changes

• Reuse verified message preparation in long conversations instead of repeatedly encoding the same history when an internal item limit is exceeded. Every message is still checked for edits, and the existing memory limit, complete history and failed-save recovery are preserved.
• Process small, already-buffered groups of tool-start observations without unnecessary scheduler waits. File reads and app actions can reach their permission checks sooner; command order, approvals, cancellation and bounded fairness remain enforced.
• Correct diagram keyboard checks to close the Details overlay before focusing and scrolling the reader; diagram behavior itself is unchanged.