Adds `Calibforge_filtered_stages_3_5` from `AweAI-Team/CalibForge`: **5,317 tasks kept and 114 archived**, out of 5,431.
| Stage | Result |
| --- | --- |
| 3: Verifying build | 5,374 kept, 57 excluded |
| 4: Reference solution reward 1 | Skipped, no reference solutions |
| 5: No-op reward 0 | 5,317 kept, 57 further excluded; 13 verifier repairs passed |
Includes the full validation run and reruns of repaired tasks. Includes the three later stage 3 login-script exclusions and omits the later stage 1 fixes.
## Stage 3: Verifying build
- **5,079 tasks patched for build failures:** corrected Docker-to-Apptainer handling of working directories, variables, temporary inputs, COPY operations, heredocs and multi-stage builds; restored missing directories and task files, including compiled Python files recovered from upstream images.
- **2,969 tasks patched for verifier preparation:** installed dependencies in the agent image to reduce repeated downloads. For 2,841 of these tasks, moved inst…
