Port HybridGym benchmarks to Harbor

[neubig]

Context

The HybridGym benchmarks (hybridgym_funclocalize, hybridgym_funcgen, hybridgym_depsearch, and hybridgym_issuelocalize) do not appear to have corresponding Harbor registry datasets/adapters yet. These should be ported as a benchmark family while keeping per-task scoring behavior intact.

Proposed scope

• Create Harbor adapters/tasks for each HybridGym variant.
• Preserve prompts, environment setup, and evaluator semantics for each variant.
• Validate parity separately for function localization, function generation, dependency search, and issue localization.
• Document any shared adapter code and per-variant differences.

Acceptance criteria

• All four HybridGym variants can be run through Harbor.
• Per-variant parity results are recorded against the current OpenHands benchmark workflows.
• OpenHands wrappers can delegate HybridGym execution to Harbor.