Implement fuzzy assertion strategies, scoped locators, and confidence explanation surfaces

[kalen-releasedgroup]

Summary

Improve resilience without moving away from deterministic evidence-based behavior.

Scope

• Implement contains/regex/date-range/min-count style resilience strategies where required.
• Support scoped locators and parent-region context during generation and replay.
• Surface confidence explanations for locators, assertions, and inferred semantics.

Requirement Links

• FR-INF-008, FR-INF-009
• Sections 9.3, 9.4, 9.5

Dependencies

• Locator ranking and assertion pipeline

Exit Criteria

• Supported fuzzy strategies are available where required.
• Scoped locator metadata flows through to generation and replay.
• Confidence values are explainable in the UI.