kartograph v0.3.0

What's Changed

• docs: centralize AGENTS guidance and scope folder rules by @ictechgy in #5
• chore: align Astra guidance, skills and workflows by @ictechgy in #6
• feat: recover lost bytecode references and report top-level dead declarations by @ictechgy in #7
• feat: classify dead findings reachable only from test classes by @ictechgy in #8
• feat(cli): graph에 교환용 JSON 형식과 source 경로 해석 옵션 추가 by @ictechgy in #9
• feat(plugin): variant마다 그래프 교환 문서 task 추가 by @ictechgy in #10
• chore(release): 0.3.0 준비 by @ictechgy in #11

Full Changelog: v0.2.0...v0.3.0