fix(xterm): patch IntersectionObserver retention via juspay/xterm.js fork

Bumps the pnpm override pointer from `fix/dispose-leaks-built` to
`fix/kolu-xterm-fixes-built`, which stacks a second fix on top of
the existing dispose-leaks patches:

- xtermjs/xterm.js#5817 (`fix/dispose-leaks`): register
  CursorBlinkStateManager + _pausedResizeTask disposables. Already
  in production.
- xtermjs/xterm.js#5821 (new, `fix/intersection-observer-weakref`):
  wrap `this` in a `WeakRef` inside `RenderService`'s IntersectionObserver
  callback. `observer.disconnect()` on our side wasn't releasing the
  callback in practice — heap snapshot showed 175,594 retained
  Uint32Arrays (~220 MB / 30 mode-toggles with 7 terminals) traced
  through the global IntersectionObserver registry → callback closure
  → RenderService → BufferService → BufferLines. WeakRef breaks that
  chain regardless of why the native registry held the callback.

Local measurement on kolu@zest (fresh tab, 30 canvas↔focus toggles,
7 terminals restored):

                                 Before fix  →  After fix
  Task Manager Memory Footprint    +367 MB   →   -3 MB
  BufferLine (Z1) instances Δ      +175,594  →   ~0

Upstream tracking: xtermjs/xterm.js#5820 (issue),
xtermjs/xterm.js#5821 (PR). Fork consumption will collapse to a plain
version bump once upstream merges + releases.

Author: srid

default.nix

@@ -46,7 +46,7 @@ let
     # hash-fresh` enforces this stays in sync with pnpm-lock.yaml by forcing
     # fetchPnpmDeps to re-execute (--rebuild), so stale artifacts in the
     # binary cache can't silently satisfy a hash that no longer matches.
-    hash = "sha256-B+bX+aTMJScRbZC55ATPAnL8tJG5QAm6fkkABpTaljY=";
+    hash = "sha256-pdwV7svJnvCSmHd+O/KbXWjCf3oABv6vOLgKX6ttkDc=";
     fetcherVersion = 3;
   };
 

package.json

@@ -18,8 +18,8 @@
       "yaml": "^2.8.3",
       "defu": "^6.1.5",
       "@anthropic-ai/sdk": "^0.81.0",
-      "@xterm/xterm": "github:juspay/xterm.js#fix/dispose-leaks-built",
-      "@xterm/addon-webgl": "github:juspay/xterm.js#fix/dispose-leaks-built&path:/addons/addon-webgl"
+      "@xterm/xterm": "github:juspay/xterm.js#fix/kolu-xterm-fixes-built",
+      "@xterm/addon-webgl": "github:juspay/xterm.js#fix/kolu-xterm-fixes-built&path:/addons/addon-webgl"
     },
     "patchedDependencies": {
       "node-pty@1.1.0": "patches/node-pty@1.1.0.patch"