Support transitive dependency resolution in vendor and related commands

[Copilot]

Adopts API changes from pbuf-registry#14 / PR#32 / PR#33 to support transitive dependency resolution. Users no longer need to manually declare all transitive dependencies in pbuf.yaml — the vendor command now resolves and vendors direct transitive deps automatically.

Proto & codegen

• Added dependency_type (string) to Dependency message
• Added resolve_transitive (bool) to GetModuleDependenciesRequest
• Regenerated Go code via buf generate

vendor command

• After vendoring configured modules, calls GetModuleDependencies with resolve_transitive=true for each registry module
• Vendors only dependency_type=="direct" transitive deps (needed for compilation), skips indirect ones
• Deduplicates against already-configured modules

push command

• Sets dependency_type: "direct" on all dependencies sent to registry

get command

• Added --resolve-transitive flag to include transitive deps in output

Tests

• Unit tests for resolveTransitiveDependencies: filtering, dedup, skip-git-modules, end-to-end vendor flow
• Integration tests with in-process gRPC server: full vendor with transitive resolution, duplicate prevention, push dependency type, get with resolve flag

CI

• Added Run Tests step (make test) to the GitHub Actions PR workflow so that unit and integration tests run automatically on every pull request

Config

• Bumped pbuf-registry module tag to v0.7.0

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[aatarasoff]

@copilot add tests run on PR

[Copilot]

@copilot add tests run on PR

Added a Run Tests step (make test) to the existing CI workflow in .github/workflows/main.yml. It now runs go test ./... -cover on every PR to main, before the build step.

[aatarasoff]

@copilot fix build and test

[Copilot]

@copilot fix build and test

Fixed in commit fix: handle conn.Close() return values to satisfy errcheck linter. The CI was failing because golangci-lint flagged 3 unchecked conn.Close() calls in e2e/integration_test.go. All three are now wrapped to discard the error explicitly.