Single tool 'execute_skill_action' has a reasonable name starting with verb, but critical gaps undermine quality. Description is 73 chars (below 10-char minimum for context), lacks WHEN/WHY guidance, and does not state that this is a WRITE operation with irreversible consequences. Input schema is present with 3 parameters, but 'conflict_files' array lacks item type definition (should specify string items). No output schema documented, LLMs cannot plan downstream calls or extract results. No error handling, no recovery guidance, no validation rules. Tool definition is visible in code but implementation is a mock stub returning hardcoded data, not a real Git resolver.

• Expand description to 100-200 chars: 'Resolve semantic merge conflicts between two Git branches using AST-aware analysis. Detects concurrent feature additions, field reordering, and method merges. Returns per-file resolution strategies and confidence scores. WRITE operation, modifies working tree.'
• Document complete output schema with all fields: base_branch, incoming_branch, total_conflicts_resolved, resolved_files (array of {file, conflict_type, resolution_strategy, lines_resolved, syntax_validated}), merge_verdict, confidence_score. Include field types and descriptions.
• Add item type to 'conflict_files' parameter: 'items: {type: string, description: "Relative file path (e.g., src/auth/service.py)"}'
• Implement real Git merge conflict detection and semantic resolution. Replace mock client with actual libgit2 or GitPython integration that parses ASTs and applies conflict resolution strategies.
• Add error handling for: branch not found, permission denied, merge conflict unresolvable, syntax validation failure. Each error should include recovery guidance (e.g., 'Branch feature/auth-v2 not found. Available branches: feature/auth-v1, feature/auth-staging').