[bug] High memory and CPU usage

[unsecretised]

Describe the bug A clear and concise description of what the bug is.

Rustcast has a high CPU and RAM Usage.

To Reproduce Steps to reproduce the behavior:
NIL - Rustcast's usage is high all the time.

Expected behavior A clear and concise description of what you expected to
happen.

Rustcast is a background app and hence should have low resource and compute usage.

Screenshots If applicable, add screenshots to help explain your problem.

Which macos version? (please complete the following information):

• OS: MacOS Tahoe 26.5
• Rustcast Version: v0.8.1

This is caused mostly by the Clipboard history which saves every image as raw bytes. Using a database would reduce the weight on the ram, but other optimisations should also take place.

[hiSandog]

Clipboard image history should probably store metadata and thumbnails separately from original bytes, with a size cap or lazy persistence for large images. To make this actionable, it would help to instrument memory by clipboard item type and size, then compare raw-byte storage with the planned database approach. A regression can copy a large image and assert background CPU/RAM returns near idle after indexing.

[unsecretised]

@hiSandog would you like to try an implementation?