Implement the 027-ui-polish feature that adds six combatant row improvements (inline conditions, row-click stat block, hover-only remove button, AC shield shape, expanded concentration click target, larger d20 icon) plus top bar redesign with icon-only StepBack/StepForward navigation buttons, dark-themed scrollbars, and multiple UX fixes including stat block panel stability during initiative rolls and mobile touch safety for hidden buttons

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

specs/027-ui-polish/checklists/requirements.md

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+# Specification Quality Checklist: Combatant Row UI Polish
+
+**Purpose**: Validate specification completeness and quality before proceeding to planning
+**Created**: 2026-03-10
+**Feature**: [spec.md](../spec.md)
+
+## Content Quality
+
+- [x] No implementation details (languages, frameworks, APIs)
+- [x] Focused on user value and business needs
+- [x] Written for non-technical stakeholders
+- [x] All mandatory sections completed
+
+## Requirement Completeness
+
+- [x] No [NEEDS CLARIFICATION] markers remain
+- [x] Requirements are testable and unambiguous
+- [x] Success criteria are measurable
+- [x] Success criteria are technology-agnostic (no implementation details)
+- [x] All acceptance scenarios are defined
+- [x] Edge cases are identified
+- [x] Scope is clearly bounded
+- [x] Dependencies and assumptions identified
+
+## Feature Readiness
+
+- [x] All functional requirements have clear acceptance criteria
+- [x] User scenarios cover primary flows
+- [x] Feature meets measurable outcomes defined in Success Criteria
+- [x] No implementation details leak into specification
+
+## Notes
+
+- All items pass. Spec is ready for `/speckit.clarify` or `/speckit.plan`.
+- Assumption: "20×20px" in FR-010 refers to the current rendered size (user-facing description), not a technology-specific measurement.
+- The spec covers purely presentational/interaction changes — no domain or data model changes needed.