New /advocate.php tab: user selects who they represent (biological
father, mother, foster carer, CWS, etc.) and the agent takes their
side entirely. Adversarial sub-questions target supporting Lovdata
statutes + ECHR precedents; synthesis returns client_strengths[] and
opposing_weaknesses[] alongside the advocate brief.
- DeepResearchAgent: add advocateRole param to run(), interpretSeed(),
expandQueries(), synthesise(). Neutral path unchanged (empty string).
- api/deep-research.php: extract + validate advocate_role from payload;
telemetry logs tool='advocate' vs 'deep_research'.
- advocate.php: new page with role dropdown (presets + custom), same
corpus slices/engine/controls/upload zone as deep research.
- assets/js/advocate.js: page-scoped JS; renders advocate banner,
client strengths card (teal), advocate brief, opposing weaknesses
card (amber), sub-Q cards, sources, uncertainty, next step.
- assets/css/tools.css: append .adv-* rules (~120 lines).
- includes/layout.php: add Advocate nav tab between Deep research and
Summarize.
- index.php: add Advocate cap-card tile.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
