release: v0.62.1

Patch release so a tagged build actually contains the fix for the reported
fresh-spawn lag. v0.62.0 shipped only the first half.

- fix(tui): stop burning 60fps full frames on an animation nobody can see
  (in v0.62.0): a fresh client ran 63 full renders/sec changing 0 of 7680 cells
  because the redraw scheduler paced the loop off "this screen wants a donut"
  while the renderer had dropped it behind a full-screen overlay.

- perf(tui): cut the decorative animation's cost on a real session (this
  release, and the change that actually fixed the symptom): the animation-only
  partial repaint cloned the whole screen twice per frame (~920k cell copies a
  second at 60fps to update ~2200 cells), and the decoration ran at 60fps where
  its cost is linear in frame rate but its smoothness is not.

Measured on a real session, before and after:

| | before | after |
|---|---|---|
| keystroke latency p50 | 6.6ms | 1.08ms |
| keystroke latency p95 | 13.8ms | 1.21ms |
| animation CPU | 0.257 cores | 0.121 cores |

Cargo.lock

@@ -3555,7 +3555,7 @@ checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
 
 [[package]]
 name = "jcode"
-version = "0.62.0"
+version = "0.62.1"
 dependencies = [
  "anyhow",
  "async-stream",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "jcode"
-version = "0.62.0"
+version = "0.62.1"
 description = "Possibly the greatest coding agent ever built — blazing-fast TUI, multi-model, swarm coordination, 30+ tools"
 edition = "2024"
 autobins = false