rule conflict fetection

[Nabeelahh]

closes #280

Summary

Implements a conflict detection engine that identifies when multiple rules suggest contradictory fixes for the same code location, preventing confusing or erroneous auto-applied changes.

Problem

Rules may suggest contradictory fixes (e.g., one rule recommends adding a semicolon while another recommends removing it, or conflicting indentation styles). Without detection, users could receive conflicting guidance or the system might apply changes that cancel each other out.

Changes

• Added src/analysis/conflicts/ module with conflict detection logic
• Implemented rule suggestion comparison algorithm
• Added warning system for users when conflicts are detected
• Integrated conflict detection into the analysis pipeline

Implementation Scope

New Files:

• src/analysis/conflicts/detector.ts - Core conflict detection logic
• src/analysis/conflicts/types.ts - Type definitions for conflicts
• src/analysis/conflicts/warning.ts - User warning system
• src/analysis/conflicts/index.ts - Public module interface

Requirements Checklist

• ✅ Identify conflicts between rule suggestions
• ✅ Warn users when conflicts are detected

Acceptance Criteria

• ✅ Conflicts detected across all supported rule types

Testing Notes

• Test overlapping rule ranges
• Test partial vs. exact match conflicts
• Test no-conflict scenarios
• Verify warning appears only for true contradictions

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