feat: add offline model manager

src-tauri/src/app_state.rs

@@ -1,3 +1,4 @@
+use std::path::PathBuf;
 use std::sync::Mutex;
 
 use serde::{Deserialize, Serialize};
@@ -11,6 +12,7 @@ pub struct ManagedAppState {
     pub settings: Mutex<AppSettings>,
     pub recording: Mutex<RecordingSession>,
     pub transcript: Mutex<TranscriptDraft>,
+    pub model_dir: PathBuf,
 }
 
 #[derive(Debug, Default, Clone, Serialize, Deserialize, PartialEq, Eq)]
@@ -35,6 +37,7 @@ impl Default for ManagedAppState {
             settings: Mutex::new(AppSettings::default()),
             recording: Mutex::new(RecordingSession::default()),
             transcript: Mutex::new(TranscriptDraft::default()),
+            model_dir: default_model_dir(),
         }
     }
 }
@@ -62,11 +65,17 @@ impl ManagedAppState {
             settings,
             recording_status,
             transcript,
-            models: model_statuses(),
+            models: model_statuses(&self.model_dir),
         })
     }
 }
 
+fn default_model_dir() -> PathBuf {
+    std::env::current_dir()
+        .unwrap_or_else(|_| std::env::temp_dir())
+        .join("models")
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;