New:

GWP threshold support for Pick-A-Brick cart splitting — set a target dollar amount per cart in Project Setup, and Cart Jigsaw fills toward it before spilling into the next cart.
PAB-only / STD-only cart roles now actually route parts, not just labels.
Save-to-Cart confirmation now shows a clear breakdown per destination cart (added/removed/changed, lots, and totals) instead of one merged view.
Clear warning when every configured cart is full, instead of silently overflowing past the 200-lot limit.
Fixed:

"Any color" wanted-list items (BrickLink's "Not Applicable" color) could be silently mismatched to the wrong specific color, causing Auto Allocate to miss stock already sitting in a BrickLink cart under a different color — risking a duplicate purchase. Auto Allocate, pricing, and cart totals now correctly treat these as any-color and match existing cart stock in any color.
Cart and grand total amounts could silently undercount parts affected by the issue above.
"Below PAB" price badges now show the actual savings amount instead of repeating the reference price.

Fixed: On the Project page, clicking things (dialogs, saving Scratch Space) could sometimes require multiple clicks or show duplicate popups after using the page for a while in one session. Now works correctly every time.
Fixed: Projects now correctly account for parts you already have. If you want 4 of a part and already have 2, the Project pool now only counts 2 as still needed — previously it ignored "Have" and could try to source more than you actually needed.

v0.4.13

Fixed unescaped part/list names in a handful of DOM-rendering locations (BrickLink wanted-list picker, cart-update modal, and the Projects pool/scratch-space row renderers) — names now consistently pass through HTML-escaping before being inserted into the page, matching the pattern already used everywhere else in the codebase.
Added browser_specific_settings.gecko.data_collection_permissions per Mozilla's new disclosure requirement (declared: websiteContent — part/color identifiers derived from BrickLink page content, sent to our own API for price lookups; nothing else is collected or transmitted).
First submission built from a shared Chrome/Firefox source tree — functionality matches the existing Chrome Web Store listing (ID hoglacgnlglnbpeffbdndnhaokiojigh), no Firefox-specific behavior differences.