fix(opencode): use plural commands directory per official docs

[tinesoft]

Description

opencode's official documentation specifies .opencode/commands/ (plural) as the directory for custom slash commands
(see https://opencode.ai/docs/commands/). The integration was using the old singular form .opencode/command, which
still works for backwards compatibility but is no longer the recommended convention.

This updates commands_subdir and registrar_config["dir"] in the opencode integration, along with the corresponding
test constants.

Testing

• Tested locally with uv run specify --help
• Ran existing tests with uv sync && uv run pytest
• Tested with a sample project (if applicable)

All 23 opencode integration tests pass (uv run python -m pytest tests/integrations/test_integration_opencode.py -q).

AI Disclosure

• I did not use AI assistance for this contribution
• I did use AI assistance (describe below)

Code changes and documentation research generated by Claude Code (Claude Sonnet 4.6). The AI verified the correct
directory name against the official opencode docs and confirmed backwards compatibility before making the change.

[Copilot]

Pull request overview

Updates the Opencode integration to follow Opencode’s current convention of using the plural .opencode/commands/ directory for custom slash commands, aligning Spec Kit’s generated paths and registrar configuration with official Opencode docs.

Changes:

• Change Opencode integration commands_subdir from command → commands.
• Change Opencode registrar output directory from .opencode/command → .opencode/commands.
• Update Opencode integration test constants to match the new directory naming.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/specify_cli/integrations/opencode/__init__.py	Updates Opencode integration config and registrar directory to .opencode/commands.
tests/integrations/test_integration_opencode.py	Updates test expectations for the new Opencode commands directory.

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[Copilot]

Copilot's findings

Comments suppressed due to low confidence (2)

src/specify_cli/integrations/opencode/init.py:26

• shutil.rmtree(legacy) can raise (e.g., permissions, transient FS errors, or if the path is a symlink). Because this runs during setup(), a failure here will abort the install even though the new .opencode/commands files were created. Handle errors explicitly (and treat symlinks specially: either refuse to touch them or unlink the symlink itself) so setup is robust and doesn’t risk acting on unexpected filesystem types.

    legacy = project_root / ".opencode" / "command"
    if not legacy.is_dir():
        return 0
    count = sum(1 for _ in legacy.iterdir())
    shutil.rmtree(legacy)
    return count

src/specify_cli/integrations/opencode/init.py:56

• The PR description says this is a directory-name update and notes the old singular directory “still works for backwards compatibility”, but setup() now actively removes the legacy directory. If intentional, this behavior change should be called out explicitly in the PR description/release notes; otherwise consider dropping the deletion or making it opt-in to preserve backwards compatibility expectations.

    def setup(
        self,
        project_root: Path,
        manifest: IntegrationManifest,
        parsed_options: dict[str, Any] | None = None,
        **opts: Any,
    ) -> list[Path]:
        """Install commands and remove any legacy `.opencode/command` directory."""
        created = super().setup(project_root, manifest, parsed_options=parsed_options, **opts)
        _migrate_legacy_command_dir(project_root)
        return created

• Files reviewed: 2/2 changed files
• Comments generated: 2