MVP: Filter opportunities by eligibility and basic fit

[andjump]

Context

See:

• docs/PRD.md §7 (Recommendation approach)
• docs/user-stories.md MVP: Safeguarding guardrails and safe fallback responses #5 (Eligibility clarity)

Recommendations must be grounded in SBARC data and eligibility rules.

Task

Implement deterministic filtering of opportunities before LLM usage.

Filtering should consider:

• age band eligibility
• deadline not passed
• location constraints (if applicable)
• basic tag/category overlap with user interests

Acceptance criteria

• Ineligible opportunities are not recommended by default
• Filtering happens before LLM prompt construction
• Clear reason if no eligible opportunities are found

Out of scope

• Ranking or scoring users
• External web search