v0.3.4

Fixes from the first real agent test report (Mira testing against boothbeacon.org).

Fixed

• Feedback body persistence: detail field expanded from 2K to 10K characters. Added message as an alias field. Previously only the 200-char summary survived to disk — the full feedback body was silently dropped.
• Alpha color grouping: CSS parser now consolidates #rrggbbaa variants into their #rrggbb parent color. Dramatically reduces noise in extraction results (e.g., 14 colors → 10 after grouping).
• Feedback schema documented: README now includes a usage example for brand_feedback with all fields.

Known Issues

• Logo SVG gradient stops may extract with empty stop-color attributes. Tracked in Lane I (extraction quality audit).