fix: keep OpenClaw MCP config valid

[kriptoburak]

Summary

• Fixes OpenClaw MCP projection writes schema-invalid _litellmAgentPlatform metadata into openclaw.json #479 by moving bridge-owned MCP names into a sidecar.
• Migrates legacy inline metadata and preserves operator-owned MCP servers.
• Adds Hermes Tweet context for Hermes Agent workflows.
• Adds the required Xquik independence notice.
• Refreshes the model map through the repository's required hook.

Why

OpenClaw rejects _litellmAgentPlatform in openclaw.json.
The bridge now writes only schema-valid config.
It stores ownership state next to DB_PATH.
Legacy markers migrate during the next agent turn.

Review Notes

• Issue OpenClaw MCP projection writes schema-invalid _litellmAgentPlatform metadata into openclaw.json #479 has no competing pull request.
• PR fix(mcp): preserve SSE frame terminator when filtering tools/list #484 already owns issue MCP proxy drops the SSE frame terminator when allowed_tools is set, breaking tools/list for real clients #483.
• The fork owner is kriptoburak.
• The target remains MIT licensed and active.

Validation

• cargo fmt --all --check
• cargo check --all-targets --locked
• cargo clippy --all-targets --locked -- -D warnings
• cargo test --locked
• 211 tests passed. 7 live tests remained ignored.
• python -m unittest discover -s templates/openclaw/tests -v
• 3 OpenClaw regression tests passed on Python 3.11.
• python3 scripts/check_code_size.py
• git diff --check
• The hook updated 2,843 model entries to 2,986.
• The refreshed model map matches the hook source byte-for-byte.
• Both linked repositories returned HTTP 200.