fix: Remove the dispatcher contract integer generation

[hatayama]

Summary

Part 3 of the version-gate consolidation (G4), following #1501 and #1503. The dispatcher and the Unity package were double-gated: an integer generation (dispatcherContractVersion vs REQUIRED_DISPATCHER_CONTRACT_VERSION, compared through --version --json) on top of the semver floor the pin's minimumDispatcherVersion already enforces. The dispatcher self-updates and releases monotonically, so the floor alone expresses capability requirements — the equality gate only added a value to keep in sync (it was never bumped from 1). The embedded contract JSONs' schemaVersion fields gated nothing because the JSON is compiled into the same binary that parses it.

After this PR the IPC protocolVersion is the only integer compatibility generation in the system.

• Drop dispatcherContractVersion and schemaVersion from dispatcher-contract.json and schemaVersion from contract.json, with their parse gates and getters
• Stop emitting DispatcherContractVersion from --version --json and stop parsing it in CliInstallationDetector
• Delete the check-dispatcher-contract guard, its cmd, and its workflow step; shrink the dispatcher minimum version guard accordingly
• Unify clicore.Version() / clicore.ProtocolVersion() onto clicontract, which owns the embedded contract data
• Refresh shared-inputs stamps for the cli/common contract change

Validation

• scripts/check-go-cli.sh, scripts/test-release-please-config.sh, scripts/test-stamp-release-inputs.sh, scripts/test-resolve-dispatcher-release-target.sh
• check-release-triggers: passed (common change paired with dispatcher and project-runner touches)
• uloop compile: 0 errors / 0 warnings; CliInstallationDetectorTests: 15/15 passed
• uloop --version --json now emits only DispatcherVersion

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Review details

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Run ID: 2666cb02-ae5f-4831-8523-c5ccff40adc5

📥 Commits

Reviewing files that changed from the base of the PR and between adceaed and a4cdda4.

📒 Files selected for processing (33)

• .github/workflows/build-and-test.yml
• Assets/Tests/Editor/CliInstallationDetectorTests.cs
• Packages/src/Editor/Domain/CliConstants.cs
• Packages/src/Editor/Infrastructure/CLI/CliInstallationDetector.cs
• cli/common/clicontract/contract.go
• cli/common/clicontract/contract.json
• cli/common/clicontract/contract_test.go
• cli/common/clicore/runner_version.go
• cli/common/clicore/tool_readiness.go
• cli/dispatcher/dispatchercontract/contract.go
• cli/dispatcher/dispatchercontract/contract_test.go
• cli/dispatcher/dispatchercontract/dispatcher-contract.json
• cli/dispatcher/internal/dispatcher/dispatcher_bootstrap_routing_test.go
• cli/dispatcher/internal/dispatcher/dispatcher_download.go
• cli/dispatcher/internal/dispatcher/dispatcher_test.go
• cli/dispatcher/internal/dispatcher/dispatcher_version.go
• cli/dispatcher/internal/dispatcher/run_help.go
• cli/dispatcher/shared-inputs-stamp.json
• cli/project-runner/internal/projectrunner/compile_wait.go
• cli/project-runner/internal/projectrunner/connection_retry_flow.go
• cli/project-runner/internal/projectrunner/control_play_mode_wait.go
• cli/project-runner/internal/projectrunner/pause_point_logs.go
• cli/project-runner/internal/projectrunner/pause_point_wait.go
• cli/project-runner/internal/projectrunner/run_test.go
• cli/project-runner/internal/projectrunner/runner_usage.go
• cli/project-runner/shared-inputs-stamp.json
• cli/release-automation/cmd/check-dispatcher-contract/main.go
• cli/release-automation/internal/automation/contract_file_at_ref_test.go
• cli/release-automation/internal/automation/dispatcher_contract_guard.go
• cli/release-automation/internal/automation/dispatcher_contract_guard_test.go
• cli/release-automation/internal/automation/dispatcher_minimum_version_guard.go
• cli/release-automation/internal/automation/dispatcher_minimum_version_guard_test.go
• scripts/test-resolve-dispatcher-release-target.sh

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch refactor/remove-dispatcher-contract-generation

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[cubic-dev-ai]

No issues found across 33 files

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