cfdceac17a
Task 2-1-01: TelemetryEvent (SQLModel table, composite PK learner/task/seq) + TraceSpan
derived view; SQLAlchemy @validates enforcement (sqlmodel drops Field constraints on table
models). Task 2-1-02: TraceStore protocol (D-019-mirrored) + SQLiteTraceStore with WAL +
synchronous=NORMAL (a-3); concurrent writer/reader no database-locked; idempotent
dedup-on-retry. Task 2-1-03: TS TelemetryEvent/TraceSpan mirroring Python field-for-field
(snake_case for byte-identical JSON); full typecheck green.
195/195 + typecheck pass; ruff clean.
---ci---
phase: 2
milestone: v0.3
status: execute
requirements: {covered: [REQ-3-003], partial: []}
---/ci---