Improve highlighting structure

- switched to a sparse delta based map
- true lazy-loading to avoid any unneccessary allocations
- fixed windows management api

TODO.md

@@ -2,19 +2,12 @@ Copyright 2025 Syed Daanish
 
 # TODO
 
-# memory usage for debug build (release build will be smaller by about 25%)
-```
-8K   ->    13.2M
-128K ->    13.2M (expected worst case 16.6M)
-128M ->   412.0M (expected worst case 2.3G)
-```
-
 ## Next few super long boring things to do::
 * redo lsp threads such that no mutex needed for any rope stuff (done)
     - Also make the classes own the methods in lsp (done)
     - This will mean that parsers/renderers and keystrokes will not need to be individually locked (done)
     - And so it will be much faster (done)
-    - At which point the main thread can also be blocked on user input or lsp responses and still be fast
+    - At which point the main thread can also be blocked on user input or lsp responses and still be faster
 * Add a superclass for editor called Window (which can be popup or tiled) (done)
 * Add a recursive tiling class for windows (done)
 * Handled by a single renderer that calls and renders each window (done)
@@ -44,6 +37,7 @@ Copyright 2025 Syed Daanish
 * also move default bar and clipboard back into cpp
 * all lsp popups are no longer their own classes but instead windows (extention like) in popup mode
 
+* also **fix click handling to send mouse unclick to the same focus window as the click And also for drag to be same as the starter**
 * skip opening binary files
 * apply themeing in bg log bar lsp popus etc. to keep visual consistency
 * searching/replace/Multi-Cursor (for just one lsp command for all) with pcre2 with regex (started by a slash) (disabled for large files)