Moved the tiny title/memory worker from a Bun Worker thread into a child process spawned via Bun.spawn IPC. The agent CLI gains a hidden --tiny-worker dispatch the parent invokes through process.execPath; the parent SIGKILLs the child on dispose so onnxruntime-node's NAPI finalizer never runs in any address space the agent owns. On Windows that finalizer was segfaulting Bun at shutdown after the tiny title model loaded (issue #1606). Drops the now-dead 'close'/'closed' handshake and the unused parentPort bootstrap, and removes tiny/worker.ts from --compile worker entries in both build scripts plus the regression test that pinned them.
Fixes#1606
roboomp
5843a78dbf