Add tests for CLI command generation and model alias resolution

- Implement `test-cli-command-gen.js` to verify the logic of `buildCliCommand` function.
- Create `test-e2e-model-alias.js` for end-to-end testing of model alias resolution in `ccw cli`.
- Add `test-model-alias.js` to test model alias resolution for different models.
- Introduce `test-model-alias.txt` for prompt testing with model alias.
- Develop `test-update-claude-command.js` to test command generation for `update_module_claude`.
- Create a test file in `test-update-claude/src` for future tests.

.codex/skills/codex-issue-plan-execute/specs/subagent-roles.md

@@ -1,32 +0,0 @@
-⚠️ **DEPRECATED** - This file is deprecated as of v2.0 (2025-01-29)
-
-**Use instead**: [`agent-roles.md`](agent-roles.md)
-
-This file has been superseded by a consolidated `agent-roles.md` that improves organization and eliminates duplication.
-
-**Why the change?**
-- Consolidates all agent role definitions in one place
-- Eliminates duplicated role descriptions
-- Single source of truth for agent capabilities
-- Better organization with unified reference format
-
-**Migration**:
-```javascript
-// OLD (v1.0)
-// Reference: specs/subagent-roles.md
-
-// NEW (v2.0)
-// Reference: specs/agent-roles.md
-```
-
-**Timeline**:
-- v2.0 (2025-01-29): Old file kept for backward compatibility
-- v2.1 (2025-03-31): Old file will be removed
-
----
-
-# Subagent Roles Definition (Legacy - See agent-roles.md instead)
-
-See [`agent-roles.md`](agent-roles.md) for the current consolidated agent roles specification.
-
-All content has been merged into the new agent-roles.md file with improved organization and formatting.