Fix public submodule metadata

[bordeauxred]

Why

Public clone/setup should not produce broken submodule metadata. Broken submodules create immediate friction for contributors and users trying benchmark integrations.

What

• Run git submodule status --recursive and identify any missing .gitmodules mappings.
• Decide which benchmark gitlinks are intentionally supported in the public repo.
• Add missing .gitmodules entries or remove unsupported gitlinks.
• Update README/examples if any unsupported benchmark paths are removed.

Acceptance

• git submodule status --recursive exits without fatal errors.
• Public docs do not require unsupported submodules.

[bordeauxred]

Codex review (2026-04-19) — preferred resolution:

For a public Python package launch, prefer removing optional benchmark gitlinks over patching `.gitmodules`. Submodules are a liability for first-time readers:

• recursive clones become slow and brittle
• benchmark code (often heavy, often experimental) gets pulled into a quick inspection
• broken submodule metadata = the immediate first-impression failure this issue is about

Specifically: remove `benchmarks/enterpriseops-gym` and `benchmarks/tau` gitlinks from the public repo. Document them in the README as optional benchmark adapters with a separate `git clone` recipe for the benchmark itself. Keep `benchmarks/harbor`, `a2a/car-bench`, `a2a/entropic-crmarenapro` only if they're actively wired and demo-relevant.

Verify post-fix: `git clone --recursive https://github.com/aganthos/clawloop.git\` succeeds clean from a fresh machine.