Shorten workflow history identifiers

[longquanzheng]

Summary

• shorten Dex's internal workflow memo, Activity, Update, Signal, and Step Activity ID names
• register and decode the new Activity Types on both Temporal and Cadence
• replace replay baselines with histories captured from the new implementation
• document the accepted naming, compatibility, and protocol-version decisions
• keep WorkerService gRPC methods, protobuf types, SDK APIs, and Web API output unchanged

Breaking change

Running workflows and histories created with the former internal names are intentionally unsupported. This change adds no Temporal/Cadence version gate, old-name alias, or compatibility path, and does not increment GlobalVersioner.

Validation

• make -C server unitTests
• make -C server temporalIntegTests
• make -C server cadenceIntegTests integrationCoverageArgs="-search=false"
• make -C server replayTests
• Cadence Web API integration suite
• make copyright-check
• cd docs && npm run check

The monolithic local ci-all-tests target exceeds its package-level 20-minute limit when both backend suites run together; its default Cadence search-pagination cases also hit the existing local Elasticsearch visibility delay. The backend suites pass independently with the same search setting used by the Cadence CI shard. The local lint target cannot start on origin/main because .build/proto-lint is absent.

No files under protos/, SDKs, or the Web frontend changed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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