P1b: SQLite project, content-addressed assets, autosave and undo

crates/zhila-protocol/src/lib.rs

@@ -202,6 +202,8 @@ pub enum Command {
         core: String,
         face: u8,
     },
+    Undo,
+    Redo,
     /// Journal-only: a core was imported through the binary path.
     ImportCore {
         name: String,
@@ -248,6 +250,10 @@ pub enum Event {
         face: u8,
         velocity: f32,
     },
+    History {
+        can_undo: bool,
+        can_redo: bool,
+    },
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
@@ -284,6 +290,9 @@ impl AudioInfo {
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct State {
     pub revision: u64,
+    pub project_name: String,
+    pub can_undo: bool,
+    pub can_redo: bool,
     pub transport: TransportState,
     pub veins: Vec<VeinState>,
     pub pattern: Pattern,