Summary

Fixes #5.

Semantic query responses now resolve chunks for nested indexed fields whose paths are stored in dot notation, including array paths like items.0.description.

What changed

• Split stored EmbJSON paths on ., matching process_document() path generation.
• Traverse dictionaries and numeric list indexes defensively.
• Return None for missing/out-of-range paths instead of raising during response composition.

Validation

Ran a direct helper check:

description => top
meta.description => nested
items.0.description => array
items.99.description => None
nested
PASS

Also ran:

python3 -m compileall -q blueprints/v0/project/db/collection/document/query/helper.py