As a dashboard user, I want to search across all signals and decisions so that I can quickly find past discussions or issues. ## Acceptance Criteria: - [x] Search by keyword across titles and content - [x] Filter search by source type - [x] Search results highlight matching terms - [x] Recent searches are saved
As a dashboard user, I want to search across all signals and decisions so that I can quickly find past discussions or issues.
Acceptance Criteria: