Add project schedule dates to SDK models

[robzolkos]

Summary

• add start_date and end_date to the shared Project shape in Smithy
• regenerate the affected SDK models across Go, TypeScript, Ruby, Python, Kotlin, and Swift
• update project fixtures and cross-language tests to cover scheduled projects
• raise the minimum Go toolchain to 1.26.3 in go/go.mod and conformance/runner/go/go.mod
• switch GitHub Actions back to go-version-file so CI follows the module-declared minimum version

Ref: https://app.basecamp.com/2914079/buckets/46292715/card_tables/cards/9869754561

Why

BC3 project API responses include start_date / end_date for scheduled projects, but the SDK spec only modeled those fields on schedule_attributes for updates. That left every generated SDK able to send project schedule dates on update, but unable to read them back from project responses.

While validating the PR, the security workflow also surfaced Go standard library vulnerabilities present in 1.26.2 and fixed in 1.26.3. Instead of hardcoding a patch release in multiple workflows, this PR makes the minimum Go version explicit in the relevant go.mod files and keeps workflows pointed at go-version-file.

Impact

This updates the generated Project model in:

• Go
• TypeScript
• Ruby
• Python
• Kotlin
• Swift

The hand-written Go wrapper is also updated so basecamp.Project exposes the new fields.

Validation

• cd go && go test ./pkg/basecamp -run 'TestProject_|TestDockItem|TestCreateProjectRequest|TestUpdateProjectRequest|TestProjectsService_Update'
• cd typescript && npm test -- --run tests/services/projects.test.ts
• cd ruby && make rb-test
• cd kotlin && ./gradlew :basecamp-sdk:jvmTest --tests com.basecamp.sdk.ProjectsServiceTest
• cd python && uv run pytest tests/services/test_projects.py

Swift models/tests were regenerated and updated, but full Swift validation was not run in this Linux environment.

[github-actions]

Spec Change Impact

Summary of Changes

• Added: projectSchedule object with startDate and endDate fields to the API models.

Effects

• SDK Regeneration Required: All SDKs need updates to include the new projectSchedule fields.
• Breaking Change: No breaking changes detected (no operations or fields were removed).

Checklist for SDK Updates

• Go
• TypeScript
• Ruby
• Kotlin
• Swift

[cubic-dev-ai]

No issues found across 21 files

[Copilot]

Pull request overview

Adds start_date / end_date to the shared Project shape so scheduled project dates are deserialized from project responses across all generated SDKs (matching what the API already returns), plus updates fixtures/tests accordingly.

Changes:

• Extend Project in Smithy with start_date and end_date, then regenerate OpenAPI + language SDK models.
• Update language-specific tests/fixtures to assert scheduled project dates are present in list/get responses.
• Update the handwritten Go wrapper so basecamp.Project exposes the new fields.

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Reviewed changes

Copilot reviewed 12 out of 21 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
spec/basecamp.smithy	Adds start_date / end_date to the shared Project shape.
openapi.json	Regenerated OpenAPI reflecting the new Project fields.
spec/fixtures/projects/get.json	Fixture updated to include scheduled project dates.
spec/fixtures/projects/list.json	Fixture updated so list includes a scheduled project with dates.
spec/fixtures/projects/README.md	Fixture notes updated to document scheduled project coverage.
go/pkg/generated/client.gen.go	Regenerated Go model includes StartDate / EndDate on Project.
go/pkg/basecamp/projects.go	Handwritten Go wrapper exposes StartDate / EndDate and maps from generated model.
go/pkg/basecamp/projects_test.go	Go tests assert the new fields deserialize from fixtures.
typescript/src/generated/schema.d.ts	Regenerated TS schema includes optional start_date / end_date.
typescript/src/generated/openapi-stripped.json	Regenerated stripped OpenAPI includes the new fields.
typescript/src/generated/metadata.json	Regenerated metadata timestamp.
typescript/tests/services/projects.test.ts	TS service tests assert start_date / end_date are present.
ruby/lib/basecamp/generated/types.rb	Regenerated Ruby Project type includes start_date / end_date.
ruby/lib/basecamp/generated/metadata.json	Regenerated metadata timestamp.
ruby/test/basecamp/services/projects_service_test.rb	Ruby tests assert schedule dates are present on get.
python/src/basecamp/generated/types.py	Regenerated Python Project TypedDict includes optional date fields.
python/tests/services/test_projects.py	New Python tests cover schedule dates on list/get.
kotlin/sdk/src/commonMain/kotlin/com/basecamp/sdk/generated/models/Project.kt	Regenerated Kotlin model includes startDate / endDate with @SerialName.
kotlin/sdk/src/commonTest/kotlin/com/basecamp/sdk/ProjectsServiceTest.kt	Kotlin tests assert schedule dates deserialize.
swift/Sources/Basecamp/Generated/Models/Project.swift	Regenerated Swift model includes startDate / endDate.
swift/Tests/BasecampTests/GeneratedServiceTests.swift	Swift tests assert schedule dates deserialize.

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[github-actions]

Sensitive Change Detection (shadow mode)

This PR modifies control-plane files:

• .github/workflows/codeql.yml
• .github/workflows/release-go.yml
• .github/workflows/security.yml
• .github/workflows/test.yml

Shadow mode — this check is informational only. When activated, changes to these paths will require approval from a maintainer.

[Copilot]

Pull request overview

Copilot reviewed 16 out of 25 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 15 out of 24 changed files in this pull request and generated no new comments.