- schema: add crash/report.type conditionals (allOf if/then) so a crash/anr/native_crash/hang/abnormal_exit manifest requires `crash` and a `manual` manifest forbids it, matching ValidateManifest. - service: reject uploads where X-Profile-Id and manifest.report.profile_id are both present but differ (new ErrProfileMismatch, mapped to 400 profile_mismatch) instead of silently preferring the header; single-source and matching cases unchanged. Adds service tests for mismatch, match, and header-only attribution. - schema: require manifest.json as the first archive.entries element via prefixItems (contains retained for validators without prefixItems support). - schema: document that maxLength is a character-count bound while the server enforces UTF-8 byte length, via a top-level note and per-field notes on the free-text device_summary and crash fields. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012e3QjbPo96ed9Mn2qRiUkh
The canonical client-diagnostics v1 contract lives in v1/.
Clients vendor the schema files, attribute registry, and fixtures from this directory.
Servers accept supported schema versions and ignore unknown additive fields.
Within v1, changes are additive only: new optional fields, enum values after coordinated client support, and new allowlisted archive entries.
Breaking changes require a new versioned contract directory and explicit server support.