- DeepResearchAgent: engine guard now accepts dbn_legal_v3, claude_sonnet, claude_haiku
(previously stripped these to azure_mini, breaking dbn_legal_v3 selection and
preventing Claude engines from reaching the correct synthesis branch)
- DbnBedrockGateway: remove response_format=json_object from chat payload — LiteLLM
converts this to a tool-use constraint for Bedrock, routing output into tool_calls
instead of content (root cause of the {} empty brief)
- advocate.php: add Claude Sonnet 4.6 (AWS Bedrock) engine option
- account, billing, dashboard, nav, min-sak: pending UI/flow changes from prior sessions
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
New dbn-tools-redesign.css with warm paper surface, navy tools nav, gold
accent, and per-tool themes via body[data-active-tool]. Updated all 21 tool
PHP pages, shared layout/nav/footer includes, and advocate route (new).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>