fix(config): make custom tool dependency install and loading resilient

[sauerdaniel]

Summary

Improve robustness of custom tool loading by handling transient dependency install failures and broken tool modules gracefully.

Problem

1. Config.waitForDependencies() runs bun install once and silently swallows failures, which can fail transiently on Windows due to file locks.
2. ToolRegistry.getCustom() directly imports each tool module; one broken custom tool can crash loading for all custom tools.

Solution

• Add bounded retry (2 attempts on Windows with short backoff) for config dependency installs
• Add try/catch around per-tool dynamic imports and continue loading remaining tools

Changes

• packages/opencode/src/config/config.ts
  • Retry bun install on Windows before giving up
  • Log retry/final failure context
• packages/opencode/src/tool/registry.ts
  • Guard dynamic imports with try/catch
  • Log failing module path and continue

Testing

• Type check passes
• Unit tests pass

AI-Assisted

Yes

Fixes #13784

[github-actions]

Hey! Your PR title fix(config/tool): make custom tool dependency install and loading resilient doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

I found a potential duplicate PR:

• PR fix: handle custom tool import failures gracefully in registry #12270: "fix: handle custom tool import failures gracefully in registry"
  • fix: handle custom tool import failures gracefully in registry #12270
  • This PR appears to address the same issue of handling custom tool import failures gracefully in the ToolRegistry, which is one of the two main fixes in PR fix(config): make custom tool dependency install and loading resilient #13708.

This PR may be a related or overlapping fix. You should check if #12270 was already merged or if it's still open and addresses the same problem.

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.

[sauerdaniel]

Re: potential duplicate with #12270 — there's partial overlap on registry.ts (both wrap import(match) in try/catch). This PR also fixes config.ts dependency installation (waitForDependencies error handling), which #12270 doesn't cover.

If #12270 merges first, I'll rebase to keep only the config.ts fix.