Updated changes for TEE x402

[kylexqian]

Currently using experimental x402 module locally, will remove and use official pypi version once validated.

[Copilot]

Pull request overview

Updates the SDK’s TEE/x402 integration to work with newer model identifiers and an experimental x402 module, while adding client-side normalization for block-structured chat content and changing the default TEE LLM endpoint.

Changes:

• Update TEE_LLM model enum values (add new models, remove older identifiers).
• Add ad-hoc TLS certificate fetching/pinning and pass verify= into the x402 httpx client.
• Change default TEE LLM server URLs to an HTTPS IP endpoint; bump SDK + dependency versions; tweak CLI/Makefile examples.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
src/opengradient/types.py	Updates the list of supported TEE model IDs (but removes existing enum members).
src/opengradient/defaults.py	Points default LLM endpoints to a hard-coded IP address and adds a TODO about registry-based discovery.
src/opengradient/client/llm.py	Adds TLS “pinning” logic, wires it into the HTTP client, and normalizes block-list content responses.
src/opengradient/cli.py	Normalizes list-of-block content when printing chat output.
requirements.txt	Bumps og-test-v2-x402 version.
pyproject.toml	Bumps package version and og-test-v2-x402 dependency.
Makefile	Updates default MODEL and adds tool-calling examples; adjusts .PHONY.

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