feat(theme): themes as files (theme crate: toml subset + ints, contrast check, wire); whimsy dark + light; display reads themes/, serves THEME/THEME_NAME, init SET_THEME -> THEME_CHANGED to all windows, bar themed; k-ui follows; settings appearance; init keeps choice in sealed users/<id>/settings/, reapplies at sign-in + display restart

crates/manifest/src/lib.rs

@@ -9,7 +9,7 @@ mod capability;
 mod decision;
 mod fields;
 mod manifest;
-mod toml;
+pub mod toml;
 
 #[cfg(test)]
 mod tests;

crates/manifest/src/manifest.rs

@@ -52,7 +52,7 @@ fn set<T>(slot: &mut Option<T>, value: Option<T>, line: usize) -> Result<(), Err
 fn text<'a>(value: Value<'a>) -> Option<&'a str> {
     match value {
         Value::Str(s) => Some(s),
-        Value::List(_) => None,
+        Value::List(_) | Value::Int(_) => None,
     }
 }
 

crates/manifest/src/tests.rs

@@ -167,6 +167,8 @@ fn only_the_subset_parses() {
         "id = kos.snake",       // bare value
         "id \"kos.snake\"",     // no =
         "[app",                 // unclosed table
+        "id = 12x",             // not a whole number
+        "id = 1.5",             // no fractions
     ] {
         assert!(
             matches!(

crates/manifest/src/toml.rs

@@ -1,6 +1,7 @@
 //! The strict TOML subset manifests and decisions are written in:
 //! `[table]` headers, `key = "string"`, `key = ["a", "b"]` on one line,
-//! `#` comments. Strings are printable ASCII without `"` or `\`.
+//! `key = 42` (a whole number), `#` comments. Strings are printable ASCII
+//! without `"` or `\`.
 
 use crate::Error;
 
@@ -18,6 +19,8 @@ pub enum Value<'a> {
     Str(&'a str),
     /// A one-line array of strings, already checked.
     List(List<'a>),
+    /// Digits only: no sign, no fraction.
+    Int(u32),
 }
 
 /// The inside of `[...]`: iterate it for its strings.
@@ -119,6 +122,10 @@ fn string(s: &str, line: usize) -> Result<&str, Error> {
 }
 
 fn value_of(s: &str, line: usize) -> Result<Value<'_>, Error> {
+    if s.bytes().next().is_some_and(|b| b.is_ascii_digit()) {
+        let digits = s.bytes().all(|b| b.is_ascii_digit());
+        return digits.then(|| s.parse().ok()).flatten().map(Value::Int).ok_or(Error::Syntax { line });
+    }
     let Some(inner) = s.strip_prefix('[') else {
         return string(s, line).map(Value::Str);
     };