CONTRACT 6: extract_json() — LLM Response Sanitizer (9 tests)
Previously COMPLETELY untested. Every single LLM response in the entire
system passes through this function. Tests:
- Clean JSON, markdown fences (json+plain), thinking block purge
- Text prefix before JSON, truncated JSON fuzzy recovery
- Garbage/empty/None resilience
CONTRACT 7: _visual_discovery Pre-Filters (8 tests)
The guards INSIDE _visual_discovery() that run BEFORE the VLM ever
sees the candidates. If they fail, the VLM gets garbage and hallucinates.
Tests:
- Area filter: tiny nodes (<200px²) and huge containers (>400000px²)
- SystemUI filter: Android system elements, notifications, battery
- Strict Button Guard: long text captions excluded for button intents
- Grid Item Guard: non-grid elements excluded, fallthrough on no match
- Author/Username Guard: nav tabs excluded for author intents
CONTRACT 8: verify_success Structural Delta (8 tests)
The post-click verification logic that decides if a click actually worked.
Tests:
- Toggle massive XML shift = navigation error (False)
- Toggle small diff = success (True)
- Toggle zero diff = inconclusive (None)
- Follow success with 'Requested' marker (private accounts)
- Follow success with German locale ('Abonniert')
- View post with clips_viewer marker (Reels)
- View post still on grid = inconclusive (None)
- Semantic gate blocks wrong toggle element (caption != like button)
Marc Mintel
f6f15ebd9a