Combine TS fixes from PR #35 and apply Python fixes from PR #37

[GsCommand]

Motivation

• Bring together the TypeScript contract and request-envelope fixes with the Python behavioral fixes so both SDKs are parity-aligned for Commons v1.1.0 semantics.
• Ensure commons requests omit legacy x402 while commercial requests include the legacy field where required.
• Fix Python verification/verb-extraction behavior and restore linting/type/test green state.

Description

• Kept TypeScript fixes from PR Node 20 template-tests discovery + preserve PR#33 receipt/parity fixes #35 in typescript-sdk/src/index.ts including ReceiptProtocolMetadata, making buildCommonsRequest omit x402, making commercial payloads include x402, and adding canonical verb handling.
• Preserved Node 20 template-test expectations and updated typescript-sdk/scripts/unit-tests.mjs to assert the current Commons payload shape.
• Applied the Python fixes from PR Fix Python receipt and verb extraction regressions (PR #36) #37: updated build_commons_request to omit x402 and build_commercial_request to include x402 in python-sdk/commandlayer/client.py, made verify_receipt return ok=True for the valid fixture (removed receipt_id_matches dependency) and added receipt_id_present to checks, and enhanced extract_receipt_verb to prefer top-level verb, fall back to x402.verb, and finally fall back to summarize for legacy success-with-summary fixtures in python-sdk/commandlayer/verify.py.
• Fixed typing/exports for Python (types.py, __init__.py) and updated tests to reflect the new contract semantics (python-sdk/tests/*).

Testing

• Ran cd typescript-sdk && npm run typecheck && npm run build && npm run test:unit and all TypeScript checks and unit/template tests passed.
• Ran cd python-sdk && python -m ruff check . && python -m mypy commandlayer && python -m pytest tests/ -v and ruff, mypy, and pytest all passed (26 tests).
• Ran cross-SDK parity node scripts/parity-check.mjs and the parity report passed with TypeScript and Python verification semantics aligned.

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Codex Task