test: add 118 tests for executor, validation, API routers, and Temporal failures

[daryllimyt]

Summary

• Add 118 new tests covering critical coverage gaps across the codebase
• Executor service (44 tests): expression evaluation, for_each dispatch, context materialization, secret masking, registry artifacts
• Validation service (28 tests): entrypoint/expression/action validation, multi-tier pipeline
• API routers (31 tests): workflow executions, organization, webhooks
• Temporal failures (6 tests): cancellation, termination, retry exhaustion, scatter-gather failure
• Tables service (9 tests): search, pagination, exists query
• Update conftest fixtures with proper manifest schema and auth dependency overrides

Test plan

• All 118 new tests pass
• Full unit test suite (3052 tests) passes with no regressions
• Temporal tests (6) pass
• Ruff lint/format clean
• Pyright 0 errors, 0 warnings

---

Summary by cubic

Adds 118 tests across executor, validation, API routers, tables, and Temporal failure paths. Improves coverage of critical workflows and failure modes, with fixtures updated for manifest and auth expectations.

• Coverage

  • Executor and validation (72): expression eval, for_each dispatch, context/secret handling, registry artifacts; entrypoint/action/expression validation.
  • API routers (31): workflow executions, organization, and webhooks (HTTP-level).
  • Temporal failures (6): retry exhaustion, cancellation, termination, scatter partial failure.
  • Tables (9): search, cursor pagination, exists queries, column type validation.

• Test Infrastructure

  • Added workflow definitions for retry exhaustion and scatter partial failure.
  • Updated conftest with core.transform.reshape manifest schema and API auth role overrides.

^{Written for commit 47df467. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 11 files