[codex] Expand ANCP language adapter coverage

[Rtx09x]

Summary

Expands ANCP language coverage beyond the existing compiler adapters with additional production-facing adapters, bug corpus cases, and docs.

What changed

• Added adapters for JSON, TOML, YAML, Shell/Bash, PowerShell, Lua, Perl, R, Haskell, OCaml, Erlang, Elixir, Clojure, Nix, Terraform, Dockerfile, and SQL.
• Added corresponding buggy corpus fixtures for schema-valid diagnostic generation.
• Expanded shim/proxy/native command mappings so normal compiler/tool commands can emit ANCP sidecars.
• Added official/source documentation references and expanded ecosystem research notes.
• Added tools/check_toolchains.py and docs/toolchains.md for local and CI toolchain coverage reporting.
• Updated release/readiness/verification docs and package manifest coverage.

Validation

• python -m compileall -q src tests tools
• pytest -> 15 passed
• python tools\audit_contracts.py
• python tools\verify_repo.py
• python tools\run_bug_corpus.py
• ancp validate .ancp\bug-corpus
• python tools\check_toolchains.py
• python -m build
• python -m twine check dist\*
• inspected source distribution for tool inclusion and generated artifact exclusion

Notes

Local full native compiler smoke coverage depends on installed language toolchains. Missing tools are intentionally reported as ANCP tool_failed documents instead of invalid output or fake success.