docs: organize Python helpers and refresh README

[Vasanthdev2004]

Summary

• move the root-level Python helper files into python/
• move the root-level Python tests into python/tests/
• update the Python tests so they still import correctly after the move
• refresh README.md into a cleaner structure that reflects current main features and the new repo layout

Verification

• py -3 -m pytest python/tests/test_atomic_chat_provider.py python/tests/test_ollama_provider.py python/tests/test_smart_router.py
• git grep -n -e "atomic_chat_provider.py" -e "ollama_provider.py" -e "smart_router.py" -e "test_atomic_chat_provider.py" -e "test_ollama_provider.py" -e "test_smart_router.py" -- . ':(exclude)docs/superpowers/**'
• bun run build
• bun run smoke

Scope

This is intentionally a low-risk organization/documentation pass only:

• no runtime behavior changes to the TypeScript CLI
• no extension path move
• no broader repo reorg beyond the Python helper/test files

[gnanam1990]

Review

Python test imports

Each test file adds sys.path.insert(0, str(Path(__file__).resolve().parents[1])) individually. This should be handled once in a conftest.py at python/tests/. Also missing python/__init__.py and python/tests/__init__.py — without these, pytest discovery is inconsistent across environments.

The file moves themselves are clean.

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Provenance section

The legal notice was removed and replaced with a single vague line. If the goal is to reduce Claude Code references in the README, rewrite it to a short factual statement rather than removing it entirely — for example:

OpenClaude originated from the Claude Code codebase and has since been substantially modified to support multiple providers and open use. "Claude" and "Claude Code" are trademarks of Anthropic PBC. See LICENSE for details.

Removing the disclosure entirely is a maintainer-level decision and needs explicit sign-off before this merges.

[kevincodex1]

looks good for me