F03: P0: provenance and field contracts

[ChrisTitusTech]

Go implementation tracking epic

Selected stack: Go + Wails v2 + React/TypeScript + SQLite. Implementation starts on the next machine. Each child below is a separate PR; do not implement this epic in one PR.

Child tasks

• F03a: License and reuse inventory
  • Merged prerequisites: None.
  • Acceptance: Maintainer records new-code license and copied-code notices; list reusable modules and source/data attribution; no blanket MIT claim or code migration before this decision.
• F03b: Provider schema and endpoint contract notes
  • Merged prerequisites: F03a.
  • Acceptance: Document supported Market endpoints/rank/platform semantics and synthetic inventory schema, quantities, unknowns, mastery/foundry field availability; list unavailable data explicitly.

Workflow

See TASKS.md, ROADMAP.md, and CONTRIBUTING.md. Aim for 100-400 handwritten changed lines per PR; split above 600 unless inseparable. Merge prerequisites before dependents. Update task evidence and this checklist after each completed PR. Close this epic only when every child passes; optional work can remain deferred.

All tasks are not started. Live game access and publication/merge actions follow the user's explicit authorization. The planning handoff does not claim runtime validation.