Function-level refactor with call graph

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name: tapps-refactor user-invocable: true model: claude-sonnet-4-6 description: >- Function-level refactor workflow using call graph tools (Epic 114). Use before changing a symbol's signature, deleting a function, or refactoring callers — maps blast radius via tapps_call_graph and diff_impact. allowed-tools: >- mcp__nlt-build__tapps_session_start mcp__nlt-build__tapps_call_graph mcp__nlt-build__tapps_impact_analysis mcp__nlt-build__tapps_diff_impact mcp__nlt-build__tapps_quick_check mcp__nlt-build__tapps_validate_changed mcp__nlt-build__tapps_checklist argument-hint: "[symbol or file-path]"

Symbol-level refactor workflow (Epic 114 / ADR-0017):

1. Session bootstrap. Call mcp__nlt-build__tapps_session_start() — read data.call_graph (ready, stale, degraded). Stale is informational; graph tools auto-rebuild on first use.

2. Before editing a function. mcp__nlt-build__tapps_call_graph(symbol='...', query='callers') — who calls this symbol? Use query='callees' for downstream dependencies or query='chain' for bounded chains.

3. Optional module context. mcp__nlt-build__tapps_impact_analysis(file_path='...', symbol='...', granularity='both') for import + symbol blast radius.

4. Edit loop. After each Python file change, mcp__nlt-build__tapps_quick_check(file_path='...').

5. After edits. mcp__nlt-build__tapps_diff_impact(file_paths='...') or finish with /tapps-finish-task (include_impact default true refreshes cache).

6. Close out. /tapps-finish-task with task_type=refactor — checklist recommends tapps_call_graph and tapps_diff_impact.

See docs/CALL_GRAPH.md for gap_rate / degraded semantics.