[Desktop] sidecar process crashes with OOM - JavaScript heap out of memory

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Description
OpenCode desktop app sidecar process crashes repeatedly due to memory leak. The sidecar process grows unbounded until it hits the V8 heap limit (~3GB+) and is killed by the OS with an OOM error.

Environment
OS: Windows 10
App version: opencode-ai@1.18.29 (desktop)
Sidecar port: Random high port (e.g.,
Memory at crash: ~3.1 GB
Logs
[2026-09-02 08:34:32.642:ERROR:electron/shell/common/node_bindings.cc:189] OOM error in V8: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory

[2026-09-02 08:34:32.643] stderr { message: "\r\n" + "<--- Last few GCs --->\r\n" + "\r\n" + "[12860:000058D400204000] 3840105 ms: Mark-Compact (reduce) 3108.7 (3198.4) -> 3108.7 (3134.6) MB, pooled: 0.0 MB, 106.09 / 0.00 ms (average mu = 0.965, current mu = 0.258) last resort; GC in old space requested\r\n" + "[12860:000058D400204000] 3840201 ms: Mark-Compact (reduce) 3108.7 (3134.6) -> 3108.6 (3133.4) MB, pooled: 0.0 MB, 96.40 / 0.00 ms (average mu = 0.932, current mu = 0.000) last resort; GC in old space requested\r\n" }

Reproduction Steps
Launch OpenCode desktop app
Open any session
Wait ~5-10 minutes
Sidecar exits with code 0
App restarts sidecar on new port
Loop repeats indefinitely
Expected Behavior
Sidecar should run stably without unbounded memory growth.

Actual Behavior
Sidecar crashes after consuming ~3GB RAM, causing the app to become unresponsive.

Additional Context
CLI version (opencode run) works fine - only affects desktop app
Multiple crash dumps in ~/AppData/Roaming/ai.opencode.desktop/Crashpad/reports/
Observed 6 crash cycles within 20 minutes
No user messages needed - background memory leak
Workaround
Use CLI: opencode run 'task' or opencode (interactive TUI)