Move preferences from the database to a YAML config file

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Cargo.lock

@@ -1152,6 +1152,7 @@ dependencies = [
  "rfd",
  "serde",
  "serde_json",
+ "serde_norway",
  "sha2",
  "ureq",
 ]
@@ -3957,6 +3958,12 @@ dependencies = [
  "unicode-script",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -4047,6 +4054,19 @@ dependencies = [
  "zmij",
 ]
 
+[[package]]
+name = "serde_norway"
+version = "0.9.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e408f29489b5fd500fab51ff1484fc859bb655f32c671f307dcd733b72e8168c"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "ryu",
+ "serde",
+ "unsafe-libyaml-norway",
+]
+
 [[package]]
 name = "serde_repr"
 version = "0.1.21"
@@ -4867,6 +4887,12 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
 
+[[package]]
+name = "unsafe-libyaml-norway"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b39abd59bf32521c7f2301b52d05a6a2c975b6003521cbd0c6dc1582f0a22104"
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"