Improve devcontainer mounts and add OAuth token support

[key]

Summary

• Replace host-specific bind mounts for .claude directory with a volume mount for better portability
• Remove .claude.json bind mount (no longer needed)
• Add containerEnv section to pass through CLAUDE_CODE_OAUTH_TOKEN environment variable

Benefits

• Portability: Volume mounts work across different host systems and CI environments
• Security: OAuth token is properly passed through environment variables
• Simplicity: Removes unnecessary bind mount configuration

Test plan

• Rebuild devcontainer and verify Claude Code authentication works
• Verify .claude directory persists across container rebuilds
• Confirm no breaking changes to existing workflows

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated development container configuration to streamline mount setup and improve environment variable handling for local development workflows.

[coderabbitai]

Walkthrough

The dev container configuration was updated to replace two host bind mounts for Claude configuration with a single named volume and to expose a Claude OAuth token environment variable into the container.

Changes

Cohort / File(s)	Summary
Dev Container Configuration .devcontainer/devcontainer.json	Replaced two host bind mounts (${localEnv:HOME}/.claude and ${localEnv:HOME}/.claude.json) with a single named volume mount. Added containerEnv section to expose CLAUDE_CODE_OAUTH_TOKEN from host to container environment.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A volume takes the place of two,
Named mounts make mounting cleaner too,
Claude's token flows through container walls,
Dev setup answers duty's calls! ✨

---

Note

🎁 Summarized by CodeRabbit Free

Your organization is on the Free plan. CodeRabbit will generate a high-level summary and a walkthrough for each pull request. For a comprehensive line-by-line review, please upgrade your subscription to CodeRabbit Pro by visiting https://app.coderabbit.ai/login.

_{Comment @coderabbitai help to get the list of available commands and usage tips.}