[Feature Request] Support multiple providers simultaneously (e.g., Claude Max + OpenRouter)

Bug Description
I want to be able to split provider e.g. using claude max for claude models using openrouter for other lightweigth cheap model

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 2.1.81
• Feedback ID: 5baf1f95-a5d9-45c0-9fa1-9c20d4356b98

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/maxmurr/.local/share/claude/versions/2.1.81 (expected in multi-process scenarios)\n    at TET (/$bunfs/root/src/entrypoints/cli.js:2724:2174)\n    at fgq (/$bunfs/root/src/entrypoints/cli.js:2724:1318)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T04:50:55.315Z"},{"error":"Error: 1P event logging: 13 events failed to export (code=ECONNABORTED, timeout of 10000ms exceeded)\n    at queueFailedEvents (/$bunfs/root/src/entrypoints/cli.js:397:2687)\n    at async doExport (/$bunfs/root/src/entrypoints/cli.js:397:1559)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T07:43:57.861Z"},{"error":"Error: {\"message\":\"Failed to export 13 events (code=ECONNABORTED, timeout of 10000ms exceeded)\",\"originalLine\":\"397\",\"originalColumn\":\"1710\",\"line\":\"397\",\"column\":\"1710\",\"sourceURL\":\"/$bunfs/root/src/entrypoints/cli.js\",\"stack\":\"Error: Failed to export 13 events (code=ECONNABORTED, timeout of 10000ms exceeded)\\n    at doExport (/$bunfs/root/src/entrypoints/cli.js:397:1710)\\n    at processTicksAndRejections (native:7:39)\",\"name\":\"Error\"}\n    at error (/$bunfs/root/src/entrypoints/cli.js:2670:27423)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:138:85385)\n    at pz4 (/$bunfs/root/src/entrypoints/cli.js:138:85929)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:139:17366)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T07:43:57.863Z"}]