T007 S7: Lower AFL subset to FreeLang v11
완료보통🏷 freelang-v13,afl-core,11s,afl-roadmap,project-p_1783139481644,stage-7,t007
## Project\\nFreeLang v13 AFL-Core Roadmap\\n\\nProject API id: p_1783139481644\\n\\nNote: standalone task because project_id create currently hits dclub-tasks DB guard.\\n\\n## Summary\\nGenerate runnable .fl from a verified AFL subset.\\n\\n## Depends On\\n- T006\\n\\n## Outputs\\n- src/lower-v11.js\\n- generated/minimal.fl\\n\\n## Done When\\n- minimal arithmetic function lowers to .fl\\n- generated .fl runs through FreeLang v11 bootstrap\\n- run output is captured in reports/run/minimal.txt\\n\\n## Verification\\n- node src/lower-v11.js examples/minimal.afl > generated/minimal.fl\\n- node /home/kimjin/freelang-v11/bootstrap.js run generated/minimal.fl\\n\\n## Risk\\nTrying to lower too much syntax. Start with literals, defn, calls, arithmetic.\\n\\n## AFL-Core Rule\\nProposals are welcomed. Execution is enforced.