feat: goal-aware repo evaluation and product analysis

[New1Direction]

Adds the first RepoLens expansion beyond generic repo scans.

New MCP tools

• evaluate_for_goal — evaluates a repo against a concrete goal + constraints and returns adopt/trial/hold/reject, fit score, blockers, integration/replacement cost, dependency risk, evidence, and a short trial plan.
• analyze_product — analyzes a public deployed product URL and returns product model, core loop, dependencies, strengths, critical systems, failure modes, and a claim/evidence verification map.

Verification discipline

analyze_product treats website statements as claims rather than implementation facts and returns a source_scope plus per-claim verification status / missing evidence.

Safety

• blocks localhost/private/link-local IP targets
• resolves hostnames before fetching and rejects private resolutions
• re-validates redirects
• blocks embedded URL credentials
• bounds HTML size/text length and request duration

Tests/docs

Adds parser normalization + URL-boundary tests and documents both tools, including an Orbio example.