upgrade path from old giga-am to new (#1088)

src-tauri/resources/models/gigaam_vocab.txt

@@ -0,0 +1,257 @@
+<unk> 0
+▁ 1
+. 2
+е 3
+а 4
+с 5
+и 6
+, 7
+о 8
+т 9
+н 10
+м 11
+у 12
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+л 14
+я 15
+в 16
+д 17
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+но 20
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+г 23
+▁в 24
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+ш 33
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+ль 44
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+? 46
+ч 47
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+во 49
+ла 50
+ре 51
+да 52
+▁и 53
+ло 54
+ст 55
+- 56
+ё 57
+▁не 58
+ле 59
+ри 60
+де 61
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+ны 63
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+▁С 65
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+ер 68
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+▁А 74
+▁Т 75
+▁у 76
+же 77
+э 78
+▁М 79
+ц 80
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+не 82
+ру 83
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+▁К 89
+щ 90
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+ми 92
+▁что 93
+▁« 94
+» 95
+ся 96
+▁По 97
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+ку 101
+ну 102
+▁это 103
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+▁ко 106
+▁П 107
+▁И 108
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+сь 114
+▁как 115
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+У 123
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+▁Включи 129
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+▁при 134
+— 135
+Л 136
+n 137
+Р 138
+сто 139
+r 140
+▁так 141
+сти 142
+Г 143
+▁На 144
+Н 145
+▁об 146
+▁мне 147
+l 148
+Я 149
+t 150
+1 151
+▁За 152
+s 153
+Э 154
+Ч 155
+Е 156
+▁есть 157
+ень 158
+▁Ну 159
+2 160
+▁Сбер 161
+вер 162
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+ение 164
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+Ф 168
+▁пере 169
+ешь 170
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+3 173
+5 174
+d 175
+y 176
+Х 177
+4 178
+З 179
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+h 182
+c 183
+m 184
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+8 187
+6 188
+7 189
+M 190
+B 191
+П 192
+D 193
+T 194
+! 195
+k 196
+g 197
+О 198
+C 199
+Ш 200
+М 201
+A 202
+p 203
+Ю 204
+P 205
+Т 206
+К 207
+А 208
+L 209
+b 210
+Д 211
+ъ 212
+H 213
+% 214
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+v 216
+V 217
+R 218
+O 219
+I 220
+И 221
+N 222
+Ж 223
+" 224
+K 225
+G 226
+Ц 227
+f 228
+w 229
+E 230
+₽ 231
+W 232
+J 233
+x 234
+z 235
+' 236
+U 237
+Y 238
+& 239
+Z 240
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++ 242
+/ 243
+Щ 244
+; 245
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+Q 249
+° 250
+Ё 251
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+€ 253
+$ 254
+« 255
+<blk> 256

src-tauri/src/managers/model.rs

@@ -419,13 +419,13 @@ impl ModelManager {
                 id: "gigaam-v3-e2e-ctc".to_string(),
                 name: "GigaAM v3".to_string(),
                 description: "Russian speech recognition. Fast and accurate.".to_string(),
-                filename: "giga-am-v3.int8.onnx".to_string(),
+                filename: "giga-am-v3-int8".to_string(),
-                url: Some("https://blob.handy.computer/giga-am-v3.int8.onnx".to_string()),
+                url: Some("https://blob.handy.computer/giga-am-v3-int8.tar.gz".to_string()),
-                size_mb: 225,
+                size_mb: 152,
                 is_downloaded: false,
                 is_downloading: false,
                 partial_size: 0,
-                is_directory: false,
+                is_directory: true,
                 engine_type: EngineType::GigaAM,
                 accuracy_score: 0.85,
                 speed_score: 0.75,
@@ -518,6 +518,9 @@ impl ModelManager {
         // Migrate any bundled models to user directory
         manager.migrate_bundled_models()?;
 
+        // Migrate GigaAM from single-file to directory format
+        manager.migrate_gigaam_to_directory()?;
+
         // Check which models are already downloaded
         manager.update_download_status()?;
 
@@ -564,6 +567,46 @@ impl ModelManager {
         Ok(())
     }
 
+    /// Migrate GigaAM from the old single-file format (giga-am-v3.int8.onnx)
+    /// to the new directory format (giga-am-v3-int8/model.int8.onnx + vocab.txt).
+    /// This was required by the transcribe-rs 0.3.x upgrade.
+    fn migrate_gigaam_to_directory(&self) -> Result<()> {
+        let old_file = self.models_dir.join("giga-am-v3.int8.onnx");
+        let new_dir = self.models_dir.join("giga-am-v3-int8");
+
+        if !old_file.exists() || new_dir.exists() {
+            return Ok(());
+        }
+
+        info!("Migrating GigaAM from single-file to directory format");
+
+        let vocab_path = self
+            .app_handle
+            .path()
+            .resolve(
+                "resources/models/gigaam_vocab.txt",
+                tauri::path::BaseDirectory::Resource,
+            )
+            .map_err(|e| anyhow::anyhow!("Failed to resolve GigaAM vocab path: {}", e))?;
+
+        info!("Resolved vocab path: {:?} (exists: {})", vocab_path, vocab_path.exists());
+        info!("Old file: {:?} (exists: {})", old_file, old_file.exists());
+        info!("New dir: {:?} (exists: {})", new_dir, new_dir.exists());
+
+        fs::create_dir_all(&new_dir)?;
+        fs::rename(&old_file, new_dir.join("model.int8.onnx"))?;
+        fs::copy(&vocab_path, new_dir.join("vocab.txt"))?;
+
+        // Clean up old partial file if it exists
+        let old_partial = self.models_dir.join("giga-am-v3.int8.onnx.partial");
+        if old_partial.exists() {
+            let _ = fs::remove_file(&old_partial);
+        }
+
+        info!("GigaAM migration complete");
+        Ok(())
+    }
+
     fn update_download_status(&self) -> Result<()> {
         let mut models = self.available_models.lock().unwrap();