fix: OCI ordering, RBE docs, and WRPC tests (#14, #18, #34)

[avrabe]

Summary

This PR addresses three related issues to improve reliability, documentation, and test coverage.

Issue #14 - Fix OCI Composition Dependency Ordering

Problem: The oci_publish_deps attribute in wac_compose_with_oci was declared but not implemented, causing race conditions where OCI pull could execute before publish completed.

Fix:

• Collect output files from oci_publish_deps targets
• Add them to the OCI pull action's inputs parameter
• Bazel's action graph now enforces correct ordering

# Now works correctly:
wac_compose_with_oci(
    name = "app",
    oci_components = {"service": "localhost:5001/my/service:v1"},
    oci_publish_deps = [":publish_service"],  # Enforced!
)

Issue #18 - RBE Documentation

Status: Added detailed comments explaining why local: "1" is needed and the path to RBE support.

• TinyGo: Documents Go module resolution and TINYGOROOT issues
• NPM: Documents network access requirements
• References Issue feat: Add Remote Execution and Remote Caching Support #18 for future RBE enablement tracking

Issue #34 - WRPC Testing Infrastructure

Added: Complete test infrastructure following Bazel 2026 best practices.

test/wrpc/
├── BUILD.bazel          # 30+ test targets
├── fixtures/
│   └── calculator.wit   # Test WIT interface
└── wrpc_tests.bzl       # Analysis test rules

Tests include:

• transport_provider_test: Validates WrpcTransportInfo fields
• wrpc_bindgen_test: Validates binding generation output
• build_test: Smoke tests for all transport and bindgen rules

Test plan

• bazel build //wkg:defs //go:defs //js:defs - bzl files load correctly
• bazel build //test/wrpc:transport_build_test - transport tests build
• Full CI validation

Fixes #14
Relates to #18
Fixes #34

🤖 Generated with Claude Code