fix: use per-resource egui::Id for render_interactive pan/zoom state …

…isolation (#135)

Pass an explicit egui::Id from each call site into render_interactive so
that pan/zoom state is keyed per resource rather than shared globally.

- pdf_viewer: uses file_id + page index
- image_viewer: uses image title
- video_viewer: uses Id::new("video").with(title) to namespace without allocation
- plugin: uses image uid

This prevents stale zoom/pan state from leaking across different files
or page transitions.

feat(pdf): add zoom and pan to PDF viewer popup similar to image view…

…er (#133)

* add integration test for nav bar edit icon

* feat(pdf): add zoom and pan to PDF viewer popup similar to image viewer

bump version to 1.6.0

add print-dirs arg (#125)

purge cache on delete (#119)

bump version to 1.5.0

release build with lto+opt_level+codegen_unit (#108)

bump version to 1.4.4

update version to 1.4.3

fix render flickering (#97)