docs(tools): add Jev Social listing

[IRONICBo]

What changed

Adds Jev Social to the AI-powered external tools table.

The listing:

• describes the Jev-to-socai decision and execution boundary;
• states that each run covers one supported platform, so cross-platform work requires separate runs and analyst correlation;
• records the OpenRouter cost boundary; and
• links the repository's public-content, authorization, privacy, platform-terms, and evidence-verification guidance.

Verification

• Checked the project link.
• Confirmed the Markdown table has four columns.
• Ran git diff --check.
• Compared the description with the current Jev Social implementation and README.
• Independent Codex review returned no findings.

Disclosure: I maintain Jev Social.