Migrate bazel-registry from standalone repo to toolshed monorepo

[Copilot]

• Clone modules from envoyproxy/bazel-registry repository
• Create bazel-registry directory structure in toolshed
• Copy modules directory to toolshed/bazel-registry/modules
• Update .gitignore to allow bazel-registry directory
• Create .github/workflows/bazel-registry.yml with boilerplate
• Add request job to check if workflow should run
• Add final status job "Bazel registry CI"
• Add validation job to check module structure
• Refactor to use actions/jq and actions/bson per repo style
• Use actions/jq for JSON validation instead of inline jq
• Use actions/bson for bash scripting
• Add BCR presubmit test job with Bazelisk
• Test the workflow configuration
• Address code review feedback
• (Stretch goal) BCR-style validation infrastructure

Original prompt

i just added a new repo envoyproxy/bazel-registry - this was a wrong turn - i should have added this to toolshed which is already well setup for monorepo testing

so basically the task is this - genesis of toolshed/bazel-registry

copy the modules folder from bazel-registry -> toolshed/bazel-registry/modules (ie toolshed/bazel-registry will be the registry root)

we will get some linting out of the box - but we need to do someting like what the other ci aspects do - ie add .github/workflows/bazel-registry.yml

it needs the boilerplate - request and final status "Bazel registry CI" job

stretch goal is to add some actual bcr-style testing so we can catch issues before upstreaming our fixes

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[phlax]

cc @jwendell - thankyou!!!

[phlax]

@copilot good job so far - the ci needswork

we have a style - and it revolves around the jq action defined in actions/jq - se allso actions/bson for bashing - this is not that style

you can use path to actions/etc directly for this pr

[Copilot]

@copilot good job so far - the ci needswork

we have a style - and it revolves around the jq action defined in actions/jq - se allso actions/bson for bashing - this is not that style...

Refactored the CI to use the actions/jq and actions/bson style in commit 1ee4510. The validation now uses:

• actions/bson for bash scripting to check module structure
• actions/jq to validate all JSON files (metadata.json and source.json)
• Relative paths (./actions/jq, ./actions/bson) as requested