Path mismatch: graph.db relative paths vs sandbox /testbed/ absolute

[harneet2512]

Problem

graph.db stores relative paths (e.g., beets/util.py). The OpenHands sandbox uses absolute paths (/testbed/beets/util.py). GT tool lookups fail silently because no node matches the absolute path.

Current Fix

_normalize_path() in tools.py strips the /testbed/ prefix. Working but hardcoded to OH sandbox structure.

Proper Fix

Make path normalization configurable:

• Read base path from env var GT_SANDBOX_PREFIX (default: /testbed/)
• Or store base path in graph.db metadata during indexing
• Add test coverage for path normalization edge cases

Priority: Medium — fixed for OH but brittle
Category: Infrastructure