0.9.0

• Added label-wrapping reference — multiline label wrapping in stack views: icon-row rule (hugging alone lets the icon be crushed to zero; require horizontal compression resistance too), stale wrap height under width churn fixed by a self-syncing preferredMaxLayoutWidth label with placement rationale, symptom→cause table; Topic Router row carries NOT-for boundaries against overflow-detection and self-sizing.
• Documented layer border z-order in shadow-and-clipping — layer.borderWidth composites above every sublayer, striking through overlapping subviews (floating badge, corner close button); fix is a dedicated border subview ordered below the overlapping subview.
• Documented frame-level layout tests in testing — host views in a real UIWindow (bare containers silently keep stale frames after constraint changes); harness fidelity does not reproduce production multi-pass width-churn bugs, so treat such tests as smoke-level invariants and always test-the-test against pre-fix code.