refactor(conflict-resolution): transform to interactive resolution with in-place modifications

BREAKING CHANGE: Remove CONFLICT_RESOLUTION.md generation in favor of interactive user confirmation and direct file modifications

Core Changes:
- Replace markdown report generation with structured JSON output for programmatic processing
- Add interactive conflict resolution via AskUserQuestion (max 4 conflicts, 2-4 strategies each)
- Apply modifications directly to guidance-specification.md and role analyses (*.md) using Edit tool
- Update context-package.json with conflict_risk status (resolved/none/low)
- Remove Phase 3 output validation (no file generation needed)

Modified Files:
- conflict-resolution.md: Complete rewrite of agent prompt and execution flow
  - Step 4: JSON output instead of markdown generation
  - Phase 3: User confirmation via AskUserQuestion
  - Phase 4: Apply modifications using Edit tool
  - Success criteria updated for in-place modifications
- plan.md: Update Phase 3 data flow and TodoWrite pattern
  - Data flow now shows "Apply modifications via Edit tool"
  - Todo description changed to "Resolve conflicts and apply fixes"
- task-generate-agent.md: Update conflict resolution context description
  - No longer references CONFLICT_RESOLUTION.md file
  - Notes conflicts resolved in guidance-specification.md and role analyses
- task-generate.md: Comprehensive cleanup of all CONFLICT_RESOLUTION.md references
  - Remove CONFLICT_RESOLUTION.md from artifact catalog
  - Update load_planning_context step to read guidance-specification.md
  - Update task implementation logic_flow
  - Update artifact priority and integration sections
  - Update directory structure documentation

Benefits:
- Seamless workflow: conflicts detected → user confirms → applied automatically
- No intermediate files to manage
- User interaction at decision point (not after-the-fact)
- Resolved conflicts integrated directly into source artifacts
- Clear conflict_risk status tracking in context-package.json

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.claude/commands/workflow/tools/task-generate-agent.md

@@ -149,9 +149,11 @@ Task(
 - Includes conflict_risk assessment
 
 ### Conflict Resolution (Conditional)
-{conflict_resolution_content}
-- Exists only if conflict_risk was medium/high
-- Contains conflict detection results and resolution strategies
+If conflict_risk was medium/high, modifications have been applied to:
+- **guidance-specification.md**: Design decisions updated to resolve conflicts
+- **Role analyses (*.md)**: Recommendations adjusted for compatibility
+- **context-package.json**: Marked as "resolved" with conflict IDs
+- NO separate CONFLICT_RESOLUTION.md file (conflicts resolved in-place)
 
 ### MCP Analysis Results (Optional)
 **Code Structure**: {mcp_code_index_results}