Windows: no console, app icons, Calc tiles paint, theme switch no edit

Release apps use the GUI subsystem; workers, Git and cmd start with
CREATE_NO_WINDOW. Each exe embeds its icon as resource 1, which gpui
also loads for the window. Patch 0044: Win32 devices take no client
buffer, so tiles and slide layers paint at full size, then copy.
ely.xcd gives both schemes one notes colour: Calc rewrote the comment
style on each switch and left an undo step. lo-patches.sh keeps LF.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

packaging/libreoffice/ely.xcd

@@ -48,7 +48,7 @@
           <node oor:name="Shadow"><prop oor:name="Color"><value>0</value></prop></node>
           <node oor:name="WriterFieldShadings"><prop oor:name="Color"><value>4144959</value></prop></node>
           <node oor:name="WriterIdxShadings"><prop oor:name="Color"><value>4144959</value></prop></node>
-          <node oor:name="CalcNotesBackground"><prop oor:name="Color"><value>3417617</value></prop></node>
+          <node oor:name="CalcNotesBackground"><prop oor:name="Color"><value>16777152</value></prop></node>
           <node oor:name="CalcPageBreak"><prop oor:name="Color"><value>6052440</value></prop></node>
           <node oor:name="CalcHiddenColRow"><prop oor:name="Color"><value>6052440</value></prop></node>
           <node oor:name="CalcCellFocus"><prop oor:name="Color"><value>6922728</value></prop></node>

packaging/windows/icon.rs

@@ -0,0 +1,21 @@
+//! Each app's build script: its icon as resource 1 on Windows.
+
+use std::{env, fs, path::PathBuf};
+
+fn main() {
+    if env::var("CARGO_CFG_TARGET_OS").as_deref() != Ok("windows") {
+        return;
+    }
+    let app = env::var("CARGO_PKG_NAME").expect("cargo names the package");
+    let root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").expect("cargo names the folder"));
+    let icon = root.join("../../assets/icons").join(format!("{app}.ico"));
+    let icon = fs::canonicalize(&icon).unwrap_or_else(|error| panic!("{}: {error}", icon.display()));
+    println!("cargo:rerun-if-changed={}", icon.display());
+    // gpui's window icon is resource 1.
+    let rc = PathBuf::from(env::var("OUT_DIR").expect("cargo gives OUT_DIR")).join("icon.rc");
+    let path = icon.to_str().expect("a UTF-8 path").trim_start_matches(r"\\?\").replace('\\', "/");
+    fs::write(&rc, format!("1 ICON \"{path}\"\n")).expect("the resource script is written");
+    embed_resource::compile(&rc, embed_resource::NONE)
+        .manifest_optional()
+        .expect("the icon resource compiles");
+}