v0.3.1

Performance optimizations

Comprehensive render pipeline optimizations delivering 20-110% throughput improvements across key scenarios, with no API or behavior changes.

Highlights

Scenario	Improvement
xh-if true	+113%
4 class toggles	+93%
1 text bind render+swap	+48%
xh-if false	+40%
nav menu 8 items	+26%
counter update	+20%
list 50 update	+22%

Changes

• Pre-compute numeric binding type codes in render plan
• Skip child creation when xh-text/xh-html will overwrite
• textContent = '' instead of innerHTML = "" in performSwap
• Batch classList.add calls in plan bindings
• Single instanceof MutableDataContext check per render
• Shared frozen PROCESSED_STATE constant
• WeakSet replaces data-xh-each-item setAttribute
• Eliminate renderItem closure in plan-based processEach
• Compiled render plans with direct DOM creation
• Inline plan bindings bypass DOM setAttribute round-trip
• Eliminate redundant DOM scans, cache hot paths, fix resource leaks

See CHANGELOG.md for full details.