fix(render): repaint on layer/property edits (#231)

Layer color/linetype/lineweight and MATCHPROP edits set the
document dirty flag but never bumped geometry_epoch. The wire
caches key on that epoch and bake a ByLayer entity's resolved
color at tessellation time, so they returned stale wires until
a new entity forced a rebuild. Bump geometry on those four
handlers so the edit repaints immediately.

Also remove REGEN/REGENALL/REDRAW/REDRWALL: the GPU raster
pipeline keeps the display continuously in sync, so on-demand
regen/redraw is a no-op concept in OCS.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/commands/display.rs

@@ -3,12 +3,6 @@ use super::*;
 impl OpenCADStudio {
     pub(super) fn dispatch_display(&mut self, cmd: &str, i: usize) -> Option<Task<Message>> {
         match cmd {
-            // ── Display refresh (no-op in GPU raster pipeline) ────────────────
-            "REGEN" | "REGENALL" | "REDRAW" | "REDRWALL" => {
-                // Display is always up-to-date in the GPU raster pipeline.
-                self.command_line.push_output("Display regenerated.");
-            }
-
             // Interactive pan: left-drag pans the view until Esc. The only pan
             // path when there is no middle mouse button (trackpad / web).
             "PAN" | "P" => {

src/app/commands/mod.rs

@@ -511,10 +511,6 @@ inventory::submit!(crate::command::CommandRegistration {
         "QSELECT",
         "QUIT",
         "REDO",
-        "REDRAW",
-        "REDRWALL",
-        "REGEN",
-        "REGENALL",
         "RENAME",
         "REPORT",
         "SA",