feat: implement keyboard and mouse input, pattern placement, and HiDPI scaling

Add configurable key bindings (TOML), modifier-aware dispatch, mouse-driven
pattern placement with preview and rotation, cell grid storage/rendering,
and fractional/integer HiDPI scaling. Archive the input-and-placement change
and sync its specs to main specs.

Tests: Hashtable, Config, Grid, Pattern (4/4 pass).
This commit is contained in:
2026-11-08 14:46:04 +01:00
parent 5e7abfb56b
commit 7874a5f7c6
31 changed files with 4081 additions and 96 deletions
+2392
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