feat(stack): converter docker run→compose (port REA modul 1) — 19 golden vektor + CLI tia-love convert

internal/i18n/locales/en.yaml

@@ -131,10 +131,12 @@ doctor:
 
 cli:
   unknownCommand: "unknown command: %q"
+  convertUsage: "usage: tia-love convert \"docker run -d -p 80:80 nginx\""
 
 usage:
   usage: "Usage:"
   open: "Open the interactive TUI"
+  convert: "Convert a docker run command → compose YAML (stdout)"
   doctor: "Check system health (docker, audio, stacks)"
   version: "Show version & build info"
-  more: "Other CLI subcommands (convert, ps, up, down, update) arriving in Phase 2–3 — see docs/PRD.md §F-028."
+  more: "Other CLI subcommands (ps, up, down, update) arriving in Phase 3 — see docs/PRD.md §F-028."