feat(frontend): agent chat streaming slice + RAG example demo - #4780

    5 files  ±0     55 suites  ±0   2s ⏱️ ±0s
1 038 tests ±0  1 038 ✅ ±0  0 💤 ±0  0 ❌ ±0 
1 040 runs  ±0  1 040 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 6419955. ± Comparison against earlier commit 1da72d5.