Default working dir to workspace/project

[neubig]

Summary

• change the default agent-server working directory fallback to workspace/project
• reuse the shared default in git-path heuristics and the default PLAN preview path
• update tests and developer docs to match the new default

Verification

• npm test
• npm run typecheck && npm run build

This PR was created by an AI agent (OpenHands) on behalf of the user.

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Project	Deployment	Actions	Updated (UTC)
agent-server-gui	Ready	Preview, Comment	May 1, 2026 5:56am

[all-hands-bot]

🟢 Good taste — Clean refactoring that eliminates magic strings and centralizes the default working directory path.

The change from absolute to relative path is well-documented, consistently applied across all references (code, tests, docs), and users can still override via VITE_WORKING_DIR.

[RISK ASSESSMENT]
🟢 LOW — Simple refactoring that replaces hardcoded paths with a constant. No behavior changes beyond the path format (absolute → relative), which is documented and overridable.

VERDICT:
✅ Worth merging — Solid refactoring with comprehensive updates and good test coverage.

KEY INSIGHT:
Centralizing configuration constants is a best practice that makes future changes easier and reduces the risk of inconsistencies.