docs: add Oruk remote MCP integration

[Nathan-Roll1]

Adds a Python integration page for Oruk's hosted Streamable HTTP MCP server, with a copyable ADK agent, environment-based bearer authentication, and a filter exposing only speech tools and model discovery. I maintain the Oruk integration.

The page documents prerecorded English audio, public-URL/base64 inputs, compact/full response limits, and tool-level errors. It also explains that vocal-expression scores do not establish private feelings, intent, identity, or a diagnosis. The two-file change follows the integration catalog conventions and adds no navigation entry or dependency to this repository.

Validation:

• Tested the exact Python code block with google-adk[mcp]==2.8.0 and MCP 1.30.0 on Python 3.12.13.
• Six offline tests passed: missing/blank credentials, agent construction, header authentication and exact argument forwarding through a local Streamable HTTP fixture, four-tool filtering, tool errors on successful HTTP responses, and connection cleanup/recreation. Fixture outputs are synthetic and are not quality results.
• Live MCP initialization and tool discovery passed. An unauthenticated audio call returned the expected tool error. One temporary no-account trial then completed one tone-analysis call for the linked 4.054-second public sample using oruk-resonance and detail: full; no transcript was requested. The returned task/model/duration and structured scores were validated. No API key is included in this PR.
• mkdocs serve built successfully; the page, catalog entry, icon, and linked external resources resolve. git diff --check passed.

The live check exercised ADK's MCP toolset directly. It did not invoke Gemini or evaluate the quality of an LLM-generated explanation.

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