Tier 2 docs described a hang at 'sending...' (RAGChunk type mismatch,
fixed in 4d2a6666). Verified that fix is present in source; the CURRENT
failure is downstream: fails at line 136 ('RAG context not found in
history') in ~14s, not a 50s hang. RAG search returns 0 chunks because
index_file no-op'd on a dead base_dir.
Identified 2 live_gui test polluters leaking temp/relative paths into
the shared subprocess ui_files_base_dir via set_value (never restored):
- tests/test_rag_visual_sim.py:20,26 (mkdtemp -> C:\...\Temp\tmpXXXX)
- tests/test_visual_sim_mma_v2.py:74,76 (persists via btn_project_save)
_reset_clean_baseline does not reset ui_files_base_dir, so pollution
persists across @clean_baseline tests. git diff 4d2a6666..e58d332e is
test/docs only (no src/) so the 'regression' is environmental flakiness,
not a code change. Report includes 4 recommended fixes for Tier 2.
ed
08264e550a