[Bug] Intel Mac still broken on v2.20.0: onnxruntime override is ignored in OpenCode's nested install

[tlerbao]

Summary

Related to #158 (fixed by #163). This is not a duplicate: #163's intended fix (pin onnxruntime-node to 1.22.0 via overrides) does not take effect under OpenCode's actual plugin dependency installation model, so Intel Mac (darwin/x64) local embedding remains broken on opencode-mem v2.20.0.

Environment

Item	Value
OS / arch	macOS Intel (darwin/x64)
OpenCode	1.18.3
opencode-mem	2.20.0
Embedding	default local: Xenova/nomic-embed-text-v1

Actual behavior

Clean/direct OpenCode install under:

~/.cache/opencode/packages/opencode-mem@2.20.0

resolves @huggingface/transformers@4.2.0 → nested onnxruntime-node@1.24.3, which ships only darwin/arm64 and lacks darwin/x64.

Exact error:

Cannot find module '../bin/napi-v6/darwin/x64/onnxruntime_binding.node'

Followed by:

Failed to initialize embedding model
Plugin warmup failed

Memory feature stays stuck in initializing.

Expected behavior

PR #163's pin to onnxruntime-node@1.22.0 should make Intel local embedding work (native binding present for darwin/x64).

Root cause evidence

The published opencode-mem@2.20.0 package places:

"overrides": {
  "onnxruntime-node": "1.22.0"
}

in the nested dependency package (opencode-mem itself), not as something the install root applies.

npm/Arborist only honors root-level overrides. OpenCode's plugin loader installs the plugin tree such that this nested override is ignored, so resolution stays on onnxruntime-node@1.24.3 (no x64 binary). OpenCode's cache also reuses the already-installed tree, so a package-only override change does not self-heal existing installs.

Verified workaround

Replacing both:

1. the top-level resolved onnxruntime-node, and
2. @huggingface/transformers/node_modules/onnxruntime-node

with 1.22.0 provides the x86_64 binding + dylib, makes require succeed, and yields:

Embedding model warmed up

with no subsequent warmup errors.

Suggested fixes

1. Make onnxruntime-node@1.22.0 an effective direct/bundled dependency (or otherwise force resolution at the install root), not a nested-only overrides entry.
2. Add a post-resolve platform artifact check (fail fast with a clear message if darwin/x64 binding is missing).
3. Until fixed, document remote embedding fallback for Intel Mac users.

Upstream context (missing platform binary packaging): microsoft/onnxruntime#27961

Reproduction (concise)

1. On macOS Intel, use OpenCode 1.18.3 with opencode-mem 2.20.0 and default local embedding.
2. Let OpenCode install the plugin to ~/.cache/opencode/packages/opencode-mem@2.20.0.
3. Inspect nested resolution: @huggingface/transformers@4.2.0 → onnxruntime-node@1.24.3 (arm64-only layout; no darwin/x64).
4. Trigger memory/embedding warmup → observe the exact napi-v6/darwin/x64/onnxruntime_binding.node module-not-found error and warmup failure above.
5. (Optional) Manually install onnxruntime-node@1.22.0 into both resolution locations described under Workaround → warmup succeeds.

Happy to provide additional sanitized logs if needed.