Task 088: DAG Viewer & Management Improvements

Status: DONE

Motivation

Human directives:

• 分析のDAGとリポジトリそのものでのタスクや技術開発のDAGは系統を分けて表示すること
• 過去の時点のDAGを遡れるようなviewerにすること
• DAGの正しさを確認し必要があれば DAGそのものや中身のツールや意思決定・分析を見直すため、一度すべてをよく見直すこと
• DAGの依存関係を張り替えるような操作もやりやすくしておくこと

Completed

Phase 1: DAG Type Separation (viewer) ✅

• Filter bar with tabs: 全体, EP01-05, 横断分析
• Per-episode filter shows episode nodes + their parameter/source dependencies
• 横断分析 (cross-cutting) shows shared params, cross-episode analyses, summary reports
• "開発タスク" tab auto-appears when task-type nodes exist in the DAG
• Episode background grouping in 全体 view: colored regions with EP labels
• Node/edge count shown in filter bar
• Legend adapts to visible node types and statuses

Phase 2: Historical DAG Viewer ✅

• Timestamped snapshots saved on each npm run dag:seed invocation
• Snapshots stored in dag/log/snapshots/ with manifest.json index
• Build copies snapshots to dist/dag-snapshots/ for browser access
• Dropdown selector in viewer: "履歴" → date/time (Nodes/Edges) options
• Selecting a historical snapshot re-renders the graph with that state
• "最新" option returns to current state

Phase 3: Comprehensive DAG Review ✅

Audit findings and fixes:

• Missing report nodes: Added report.communications, report.tech_overview, report.ai_costs (3 new)
• Missing dependency: Added analysis.attitude_control as dependency of report.science_accuracy
• All 30 analysis nodes verified: 24 per-transfer + 6 cross-cutting match actual analyses
• All 12 report nodes verified: 5 episode + 7 summary match actual report JSONs
• DAG now: 63 nodes, 312 edges (was 60/300)

Phase 4: Dependency Re-wiring UX ✅

• Added remove-dep CLI command: npm run dag -- remove-dep <from> <to>
• Added rewire CLI command: npm run dag -- rewire <node> --from <old-dep> --to <new-dep>
• Both commands log events to dag/log/events.jsonl
• Error handling: throws if dependency doesn't exist

Dependencies

• Task 085 (DAG foundation — DONE)