Implement Cloud Highlights, Annotations & Shareable Quotes Feature#16

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Copilot wants to merge 3 commits intomasterfrom

Commits on Sep 23, 2025

Initial plan
Copilot
committed
Implement core highlights functionality with database, API, and UI components

Copilot
and
hoangsonww
committed
Complete highlights feature implementation with documentation and tests

Copilot
and
hoangsonww
committed