RecordedTrace validation now follows classify_value — numeric version
selects v3, otherwise v2 — so mixed pages/states and v2 envelopes with
a version field fail Schema checks before Recall import. Keep standalone
trace_step as a v2|v3 union for tools that validate a single step.
Split standalone v2/v3 schemas and drop TraceV2 deny_unknown_fields so legacy traces with extra keys still parse; mix and version checks stay in RecordedTrace.
Require Trace v3 version const 3, reject mixed pages/states payloads, and
align TypeScript selection optionality with the generated schema. Trace v2
on main already records hover steps, so the frozen v2 schema must accept
them instead of dropping them during reduction.
Co-authored-by: Cursor <cursoragent@cursor.com>
Define Trace v3 wire types and generated schemas while keeping protocol
1.1 peers compatible with 1.0. Default record start still produces Trace
v2, and only an explicit trace_version=3 request enables the new shape.
Refs #90
Co-authored-by: Cursor <cursoragent@cursor.com>