Implement key_expose_all function bound to Alt+Space that unminimizes, unmaximizes, and unfullscreens all windows on current workspace then rearranges. Add floating_before_maximize boolean to Client struct to preserve floating state when toggling maximize. Enable Alt+LeftDrag for moving and Alt+RightDrag for resizing windows from any position with directional cursor support. Increase resize edge detection from 8 to 12 pixels. Add panel.h dependency to keys build target and update shortcut help text with new bindings.
- Add DwnStatus enum with six error codes (OK, ERROR, INVALID_ARG, NO_MEMORY, NOT_FOUND, DISPLAY, IO) to include/dwn.h
- Extend NewsArticle struct with NewsSentiment enum (NEUTRAL, POSITIVE, NEGATIVE) and sentiment_score float field in include/news.h
- Insert DWN_ASSERT and DWN_ASSERT_MSG contract assertion macros plus assert.h include into include/util.h
retoor