Add Windsurf parser

[khadinakbarlabs]

Tool

Windsurf (formerly Codeium) — Cascade AI IDE from the Codeium team. Used by a large dev audience.

What we'd need

Locate the per-session token counts Windsurf writes to disk (VS Code-fork extension log, JSON state, or similar) and emit a per-session token + model record. No prompt/response bodies.

Likely locations

• ~/Library/Application Support/Windsurf/User/globalStorage/... (macOS)
• ~/.config/Windsurf/User/globalStorage/... (Linux)
• %APPDATA%\Windsurf\User\globalStorage\... (Windows)

Cline/Roo parsers already do globalStorage walking — copy the pattern.

Acceptance

• New entry in the source registry in src/cli.js.
• Returns { source: "windsurf", model, input_tokens, output_tokens, cost_usd?, synced_at }.
• README + caveats updated.

Tag the PR with parser and mention this issue.