Persist window state across runs

Cargo.lock

@@ -1010,6 +1010,7 @@ dependencies = [
  "log",
  "nohash-hasher",
  "profiling",
+ "ron",
  "serde",
  "smallvec",
  "unicode-segmentation",
@@ -3766,6 +3767,20 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "ron"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4147b952f3f819eca0e99527022f7d6a8d05f111aeb0a62960c74eb283bec8fc"
+dependencies = [
+ "bitflags 2.11.0",
+ "once_cell",
+ "serde",
+ "serde_derive",
+ "typeid",
+ "unicode-ident",
+]
+
 [[package]]
 name = "rtrb"
 version = "0.3.3"
@@ -4753,6 +4768,12 @@ dependencies = [
  "rustc-hash 2.1.2",
 ]
 
+[[package]]
+name = "typeid"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc7d623258602320d5c55d1bc22793b57daff0ec7efc270ea7d55ce1d5f5471c"
+
 [[package]]
 name = "typenum"
 version = "1.19.0"