chore: consolidate and simplify changesets

Author: liruifengv

.changeset/goal-resume-turn-trim.md

@@ -0,0 +1,7 @@
+---
+"@moonshot-ai/kimi-code": patch
+"@moonshot-ai/kimi-code-sdk": patch
+"@moonshot-ai/agent-core": patch
+---
+
+Improve TUI performance and resume speed for long-running sessions.

.changeset/long-session-tui-performance.md

@@ -2,4 +2,4 @@
 "@moonshot-ai/pi-tui": patch
 ---
 
-Reuse the processed output of unchanged lines across frames so a steady-state frame only pays for the lines that actually changed, instead of re-processing the whole transcript on every spinner tick and streaming flush.
+Speed up the terminal renderer in long sessions by reusing processed lines across frames.