Epic: Unified Examples Format

[timotheeguerin]

Epic tracking the rollout of the Unified Examples Format in Azure/typespec-azure — a single examples.yaml per service that replaces ~282K individual x-ms-examples JSON files.

RFC: https://github.com/Azure/azure-rest-api-specs/blob/rfc/unified-examples-format/documentation/rfc/unified-examples-format.md

Examples are authored once per service in YAML, version-aware via since, joined to Swagger operations through an x-id extension. Version ordering comes from service.yaml (see the service.yaml epic).

Rollout

• examples.yaml JSON Schema + examples-validate #4832 — examples.yaml JSON Schema + examples-validate
• examples-migrate tool #4833 — examples-migrate tool
• examples-resolve tool #4834 — examples-resolve tool
• x-id emission: typespec-autorest + transitional JSON #4835 — x-id emission: typespec-autorest + transitional JSON
• TCGC + consumers adoption #4836 — TCGC + consumers adoption
• Auxiliary tooling: examples-scaffold + examples-diff #4837 — Auxiliary tooling: examples-scaffold + examples-diff
• Pilot migration (EventGrid) + CI round-trip #4838 — Pilot migration (EventGrid) + CI round-trip
• Migrate all services to examples.yaml #4839 — Migrate all services to examples.yaml
• Disable old example tooling #4840 — Disable old example tooling
• Delete all x-ms-examples JSON files #4841 — Delete all x-ms-examples JSON files

Child issues are attached as sub-issues below.