Nightly 0.0.29-nightly.20260719.849 won't launch on Windows: effect missing from app.asar.unpacked (ERR_MODULE_NOT_FOUND Context)

[MasjidSayyidAlKawnayn]

Summary

Windows Nightly 0.0.29-nightly.20260719.849 crashes on launch with a main-process ERR_MODULE_NOT_FOUND for effect/Context, imported from @effect/platform-node's NodeHttpClient.js.

This looks like a packaging regression: effect (and related deps) are listed in the asar index as unpacked files, but are not present under resources/app.asar.unpacked/node_modules/.

Area

Build, CI, or release tooling / Desktop packaging

Steps to reproduce

1. Install T3 Code Nightly 0.0.29-nightly.20260719.849 on Windows x64 (T3-Code-0.0.29-nightly.20260719.849-x64.exe)
2. Launch T3 Code (Nightly)

Expected behavior

App launches normally.

Actual behavior

Uncaught exception dialog:

A JavaScript error occurred in the main process

Uncaught Exception:
Error [ERR_MODULE_NOT_FOUND]: Cannot find module '...app.asar\node_modul...\Context'
imported from '...app.asar\...\NodeHttpClient.js'

Stack points at Node ESM resolution (finalizeResolution / moduleResolve).

Investigation notes

On a machine with 849 installed:

• Import path in packaged code: import * as Context from "effect/Context" from @effect/platform-node/dist/NodeHttpClient.js
• @effect/platform-node is present under app.asar.unpacked/node_modules/@effect/platform-node
• effect is missing from app.asar.unpacked/node_modules/effect
• Extracting node_modules\effect\package.json / dist\Context.js via @electron/asar fails with ENOENT under app.asar.unpacked\... (files marked unpacked but not on disk)
• Related deps also missing from unpacked in that build: undici, mime (peer/runtime deps of @effect/platform-node)

This is distinct from (but in the same family as) #3789 / #3790 (pnpm 11 deduped deps dropped from asar). Here the failure mode is specifically unpacked index entries with missing unpacked payloads.

Workaround

Rolling back to a prior Nightly works. Confirmed working:

• 0.0.29-nightly.20260712.791 (local updater cache installer; effect/dist/Context.js present under app.asar.unpacked)

Environment

• OS: Windows 10/11 (win32 10.0.26200), x64
• App: T3 Code (Nightly) 0.0.29-nightly.20260719.849
• Install path: %LocalAppData%\Programs\t3code

Impact

Blocks Nightly launch completely on Windows for this build.

Happy to provide more asar listings / installer hashes if useful.

[juliusmarminge]

PR #4160 has been refreshed without opening a new PR: branch codex/refresh-pr-4160 at commit b8b14378ce. The refresh fixes the unresolved macOS app-bundle Resources path while preserving Windows/Linux paths; 31 focused cross-platform tests pass. Status remains 🚧 In Progress until merge.