Image Tagger

Canonical docs:

• docs/ARCHITECTURE.md
• docs/CONTRACT.md

Execution plans:

• docs/workplan/PRE_SPRINT.md
• docs/workplan/PLAN_BACKEND_PHASE1.md
• docs/workplan/PLAN_FRONTEND_PHASE1.md
• docs/workplan/PLAN_BACKEND_PHASE2.md
• docs/workplan/PLAN_FRONTEND_PHASE2.md

Read docs/ARCHITECTURE.md for the repo boundary, then use the relevant docs/workplan/ document for execution.