QuickJSScriptRunner.installCtx throws when context contains a Timeout with circular refs

[akarma-synetal]

Description

When a sandboxed hook executes via QuickJSScriptRunner, the installCtx method calls setGlobalJson to serialize the hook context into the QuickJS sandbox. This calls JSON.stringify on the full context object. If the context (or anything reachable from it) holds a setTimeout/setInterval handle, JSON.stringify throws:

TypeError: Converting circular structure to JSON
    --> starting at object with constructor 'Timeout'
    |     property '_idlePrev' -> object with constructor 'TimersList'
    --- property '_idleNext' closes the circle

The full stack trace:

TypeError: Converting circular structure to JSON
    at JSON.stringify (<anonymous>)
    at setGlobalJson (packages/runtime/dist/index.js)
    at QuickJSScriptRunner.installCtx (packages/runtime/dist/index.js)
    at QuickJSScriptRunner.execute (packages/runtime/dist/index.js)
    at boundBodyHandler (packages/runtime/dist/index.js)
    at runWithTimeout (packages/objectql/dist/index.mjs)
    at runWithRetry (packages/objectql/dist/index.mjs)
    at runWithErrorPolicy (packages/objectql/dist/index.mjs)
    at Object.handler (packages/objectql/dist/index.mjs)
    at _ObjectQL.triggerHooks (packages/objectql/dist/index.mjs)

Expected Behavior

setGlobalJson should strip or sanitize non-serializable host objects (Timers, streams, etc.) before passing to JSON.stringify, or use a replacer that safely skips them. At minimum, the error should be caught and reported clearly rather than surfacing as an opaque circular-reference crash.

Steps to Reproduce

Trigger any sandboxed hook when the ctx object tree contains a live setTimeout/setInterval handle.

Package(s) affected

• packages/runtime — QuickJSScriptRunner.installCtx / setGlobalJson