feat(nabledge-5/6): Add upgrade-check workflow for Nablarch version upgrade impact analysis

[kumagoro1202]

Summary

This PR adds an upgrade-check workflow to the nabledge-5 and nabledge-6 skills, enabling automated impact analysis when upgrading Nablarch versions.

Added files

nabledge-5:

• .claude/skills/nabledge-5/workflows/upgrade-check.md
  • 4-step workflow: pom.xml detection → rule-based filter → LLM-assisted evaluation → report generation
• .claude/skills/nabledge-5/scripts/upgrade-checker.sh
  • Rule-based detection script implementing R1–R8 rules

nabledge-6:

• .claude/skills/nabledge-6/workflows/upgrade-check.md
  • Same workflow adapted for Nablarch v6 release notes
• .claude/skills/nabledge-6/scripts/upgrade-checker.sh
  • Rule-based detection script for v6 release notes

Background

Nablarch users often face challenges when assessing upgrade impacts between versions, as they must manually review release notes. This workflow automates the detection process by:

1. Detecting the current Nablarch version from pom.xml (BOM dependency)
2. Applying 8 rule-based detection patterns (R1–R8) against release note JSON files
3. Providing optional LLM-assisted evaluation for the remaining ~12% of items
4. Generating a structured Markdown impact assessment report

Detection Rules

Rule	Detection Target	Method
R1	Sections with hints[] containing "システムへの影響あり"	Array value match
R2	Sections with title containing "影響がある変更"	Partial string match
R3	Warning/Important blocks in section text	Regex on Markdown
R4	Table rows with "あり" in the impact column	Table parsing
R5	FQCN extraction from backtick notation	Regex extraction
R6	Configuration key extraction from backtick notation	Regex extraction
R7	Artifact ID extraction from fix-version columns	Table parsing
R8	Project source code matching via grep	File system search

Analysis Basis

Analysis of all 83 affected items across 25 release note files (v5: 21 files, 75 items; v6: 4 files, 8 items):

• Rule-based coverage: ~88% (73/83 items)
• Requires LLM assistance: ~12% (10 items)

Usage

# For Nablarch v5 projects
nabledge-5 upgrade-check --from 5u13 --to 5u18 --project-dir /path/to/project

# For Nablarch v6 projects
nabledge-6 upgrade-check --from 6u1 --to 6u3 --project-dir /path/to/project