fix(opencode): align batch tool execution with active turn filtering

[GuestAUser]

Issue for this PR

Closes #21367

Type of change

• Bug fix
• Refactor / code improvement
• New feature
• Documentation

What does this PR do?

batch was resolving tools independently from the turn tool set, so it could miss model-gated tools like apply_patch and drift from the tools actually exposed to the model.

This change:

• reuses LLM.filterTools() as the shared turn filter
• threads the filtered tool IDs through SessionPrompt via extra.allow
• resolves ToolRegistry.tools(...) in batch with the active { providerID, modelID }
• rejects batched subcalls that were not enabled in the active turn

This keeps external / MCP tools out of batch and makes batched execution match normal tool execution.

How did you verify your code works?

• cd packages/opencode
• bun test test/tool/batch.test.ts test/tool/apply_patch.test.ts
• bun typecheck
• added regression coverage for:
  • batch -> apply_patch under a GPT-5-style patch turn
  • rejecting apply_patch when the turn allowlist excludes it

Screenshots / recordings

N/A — non-UI change.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[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.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍