ScanTerminalDashboard had accumulated terminal fetching, theme persistence, local clock updates, and AI pinned-city hydration in one component. Moving those responsibilities into focused hooks keeps the screen component as the composition layer while preserving the existing UI and data flow.
Constraint: Refactor must not change the current decision-card or scan-terminal behavior.
Rejected: Split visual card components in the same commit | too much surface area for one safe refactor pass.
Confidence: high
Scope-risk: moderate
Reversibility: clean
Tested: npm run build
Not-tested: Browser manual regression across map, calendar, and pinned-card interactions.
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