before adding Deck name to settings

main.py

@@ -43,10 +43,15 @@ class SpanishTrainerApp(QMainWindow):
         self.audio_output = QAudioOutput()
         self.media_player.setAudioOutput(self.audio_output)
         
-        self.current_flashcard_id = None
+        # Flashcard Core State Variables
+        self.current_flashcard_id = None       # Tracks the translation_id currently being reviewed
+        self.current_card_is_flipped = False   # False = Front, True = Back
+        self.current_active_es_text = ""       # Caches active Spanish string
+        self.current_active_en_text = ""       # Caches active English string
+        self.flashcard_ids_pool = []           # Tracks currently filtered list of translation_ids
+        
         self.current_sandbox_es_id = None
         self.current_sandbox_en_id = None
-        self.flashcard_ids_pool = []  # Tracks currently filtered study list IDs
         
         # Central Main Window Tabs Interface
         self.tabs = QTabWidget()
@@ -105,7 +110,6 @@ class SpanishTrainerApp(QMainWindow):
 
     def load_system_settings(self):
         """Loads persistent variables from the key-value settings table."""
-        # Baseline internal fallback defaults
         self.anki_export_dir = os.getcwd()
         self.video_export_dir = os.getcwd()
         self.video_first_lang = "English First (en -> es)"
@@ -141,7 +145,6 @@ class SpanishTrainerApp(QMainWindow):
             cursor.execute("INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)", (key, value))
             conn.commit()
             
-            # Sync the application runtime settings instantly back to memory variables
             if key == "video_first_language":
                 self.video_first_lang = value
             elif key == "video_repeats_count":
@@ -158,14 +161,16 @@ class SpanishTrainerApp(QMainWindow):
         Ensures a target audio track exists on disk, reads its run length 
         via ffprobe, caches the duration field inside SQLite, and returns the float timing block.
         """
-        if not phrase_id:
+        if not text_str.strip():
             return 2.5
 
         safe_name = "".join([c for c in text_str if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
+        if not safe_name:
+            safe_name = hashlib.sha256(text_str.encode('utf-8')).hexdigest()[:16]
+            
         os.makedirs("media", exist_ok=True)
         target_file = f"media/{safe_name}_{lang}_female.mp3"
 
-        # 1. Generate audio track dynamically if missing
         if not os.path.exists(target_file):
             try:
                 voice = "es-ES-ElviraNeural" if lang == "es" else "en-GB-SoniaNeural"
@@ -175,17 +180,16 @@ class SpanishTrainerApp(QMainWindow):
                 print(f"❌ Core TTS System Exception: {tts_err}")
                 return 2.5
 
-        # 2. Return cached value from DB if it exists and isn't null
+        if phrase_id:
-        conn = get_connection()
+            conn = get_connection()
-        cursor = conn.cursor()
+            cursor = conn.cursor()
-        cursor.execute("SELECT duration FROM phrases WHERE id = ?", (phrase_id,))
+            cursor.execute("SELECT duration FROM phrases WHERE id = ?", (phrase_id,))
-        cached_row = cursor.fetchone()
+            cached_row = cursor.fetchone()
             
-        if cached_row and cached_row[0] is not None:
+            if cached_row and cached_row[0] is not None:
-            conn.close()
+                conn.close()
-            return float(cached_row[0])
+                return float(cached_row[0])
 
-        # 3. Calculate audio duration via ffprobe and store it permanently
         try:
             cmd = [
                 'ffprobe', '-v', 'quiet', '-print_format', 'json',
@@ -195,14 +199,15 @@ class SpanishTrainerApp(QMainWindow):
             data = json.loads(result.stdout)
             duration = float(data['format']['duration'])
             
-            cursor.execute("UPDATE phrases SET duration = ? WHERE id = ?", (duration, phrase_id))
+            if phrase_id:
-            conn.commit()
+                cursor.execute("UPDATE phrases SET duration = ? WHERE id = ?", (duration, phrase_id))
-            print(f"💾 Track length calculated and stored globally: {duration}s -> Phrase ID {phrase_id}")
+                conn.commit()
         except Exception as e:
             print(f"⚠️ Track structure analysis warning for {target_file}: {e}")
             duration = 2.5
         finally:
-            conn.close()
+            if phrase_id and 'conn' in locals() and conn:
+                conn.close()
 
         return duration
 
@@ -259,9 +264,11 @@ class SpanishTrainerApp(QMainWindow):
         
         self.input_text_es = QTextEdit()
         self.input_text_es.setMaximumHeight(75)
+        self.input_text_es.textChanged.connect(self.clear_id_if_new_entry)
         
         self.input_text_en = QTextEdit()
         self.input_text_en.setMaximumHeight(75)
+        self.input_text_en.textChanged.connect(self.clear_id_if_new_entry)
         
         self.combo_type = QComboBox()
         self.combo_type.addItems(["phrase", "sentence", "noun", "verb", "adjective"])
@@ -445,7 +452,7 @@ class SpanishTrainerApp(QMainWindow):
         
         action_buttons = QHBoxLayout()
         self.btn_play_voice = QPushButton("🗣️ Play Voice Track")
-        self.btn_flip_card = QPushButton("👁️ Reveal English Partner")
+        self.btn_flip_card = QPushButton("👁️ Reveal Translation")
         
         self.btn_play_voice.clicked.connect(self.handle_play_voice)
         self.btn_flip_card.clicked.connect(self.handle_flip_card)
@@ -506,7 +513,6 @@ class SpanishTrainerApp(QMainWindow):
         video_layout.addWidget(self.line_video_dir)
         video_layout.addWidget(btn_browse_video)
         
-        # UI Sleep Learning Configuration Fields
         self.combo_first_lang = QComboBox()
         self.combo_first_lang.addItems(["English First (en -> es)", "Spanish First (es -> en)"])
         self.combo_first_lang.setCurrentText(self.video_first_lang)
@@ -526,7 +532,6 @@ class SpanishTrainerApp(QMainWindow):
         form_layout.addRow("<b>Target Translation Loop Multiplier (Repeats):</b>", self.spin_video_repeats)
         form_layout.addRow("<b>User Recall Repetition Frame Intermission (Seconds):</b>", self.spin_pause_duration)
         
-        # High-visibility sync button to calculate missing timings and rebuild metadata cache
         self.btn_sync_cache = QPushButton("⚡ Populate Audio & Timings Cache")
         self.btn_sync_cache.setStyleSheet("""
             QPushButton { 
@@ -563,7 +568,6 @@ class SpanishTrainerApp(QMainWindow):
             self.save_setting_to_db("video_export_directory", directory)
 
     def handle_bulk_populate_audio_cache(self):
-        """Iterates through all relational links, runs dynamic downloads, analyzes audio runtime lengths via ffprobe."""
         conn = get_connection()
         cursor = conn.cursor()
         cursor.execute("""
@@ -587,6 +591,346 @@ class SpanishTrainerApp(QMainWindow):
 
         QMessageBox.information(self, "Cache Processing Complete", "All missing speech segments successfully written. Timings cached safely.")
 
+    # =====================================================================
+    # 💡 FLASHCARD OPERATIONS LOGIC COUPLING
+    # =====================================================================
+    def handle_live_speed_change(self):
+        val = self.slider_review_speed.value()
+        self.lbl_review_speed.setText(f"{val / 100:.2f}x")
+
+    def load_flashcard_by_id(self, translation_id):
+        """Loads a translation node into memory and targets local text widgets without notes clutter."""
+        conn = get_connection()
+        cursor = conn.cursor()
+        cursor.execute("""
+            SELECT t.translation_id, p1.text, p2.text, p1.source_context, t.tags, t.notes
+            FROM translations t
+            JOIN phrases p1 ON t.source_phrase_id = p1.id
+            JOIN phrases p2 ON t.target_phrase_id = p2.id
+            WHERE t.translation_id = ?
+        """, (translation_id,))
+        record = cursor.fetchone()
+        conn.close()
+
+        if record:
+            self.current_flashcard_id = record[0]
+            self.current_active_es_text = str(record[1])
+            self.current_active_en_text = str(record[2])
+            self.current_card_is_flipped = False  
+            
+            self.lbl_card_text.setText(self.current_active_en_text)
+            self.btn_flip_card.setText("👁️ Reveal Translation")
+            
+            # --- t.notes (record[5]) has been intentionally omitted from this layout context ---
+            meta_str = f"Link ID: {record[0]} | Context: {record[3] or 'N/A'}"
+            if record[4]:
+                meta_str += f" | Tags: {record[4]}"
+            self.lbl_card_meta.setText(meta_str)
+            
+            self.handle_play_voice()
+
+    def handle_flip_card(self):
+        if not self.current_flashcard_id:
+            return
+            
+        if not self.current_card_is_flipped:
+            self.lbl_card_text.setText(self.current_active_es_text)
+            self.btn_flip_card.setText("👁️ Return to Prompt")
+            self.current_card_is_flipped = True
+        else:
+            self.lbl_card_text.setText(self.current_active_en_text)
+            self.btn_flip_card.setText("👁️ Reveal Translation")
+            self.current_card_is_flipped = False
+
+    def handle_play_voice(self):
+        if not self.current_flashcard_id:
+            return
+            
+        text_target = self.current_active_es_text if self.current_card_is_flipped else self.current_active_en_text
+        lang_target = "es" if self.current_card_is_flipped else "en"
+        speed_target = self.lbl_review_speed.text()
+        
+        self.execute_playback(text_target, lang_target, speed_target)
+
+    def handle_load_next_card(self):
+        if not self.flashcard_ids_pool:
+            QMessageBox.information(self, "Pool Empty", "No flashcards found in the matrix matching current criteria filters.")
+            return
+            
+        next_tx_id = random.choice(self.flashcard_ids_pool)
+        
+        for row in range(self.review_table.rowCount()):
+            if int(self.review_table.item(row, 0).text()) == next_tx_id:
+                self.review_table.setCurrentCell(row, 0)
+                break
+                
+        self.load_flashcard_by_id(next_tx_id)
+
+    # =====================================================================
+    # 📦 GENANKI EXPORT ENGINE (RESTRUCTURED PURE TRANSLATION FLOW)
+    # =====================================================================
+    def handle_export_anki_deck(self):
+        """
+        Gathers selected records from the matching criteria pool view, builds 
+        a dual card template layout mapping English->Spanish (Card 1) and Spanish->English 
+        (Card 2) forward-reverse pairs cleanly. Explicitly maps 4 fields: EnglishText, 
+        EnglishAudio, SpanishText, SpanishAudio. Context and notes are fully removed.
+        """
+        targets = self.flashcard_ids_pool
+        if not targets:
+            QMessageBox.warning(self, "Export Aborted", "The active flashcard pool filter is completely empty. Nothing to export.")
+            return
+            
+        conn = get_connection()
+        cursor = conn.cursor()
+        
+        placeholders = ",".join("?" for _ in targets)
+        cursor.execute(f"""
+            SELECT t.translation_id, p1.text, p2.text, p1.source_context, t.tags, t.notes, t.deck_name
+            FROM translations t
+            JOIN phrases p1 ON t.source_phrase_id = p1.id
+            JOIN phrases p2 ON t.target_phrase_id = p2.id
+            WHERE t.translation_id IN ({placeholders})
+        """, targets)
+        records = cursor.fetchall()
+        conn.close()
+
+        if not records:
+            QMessageBox.information(self, "Export Processing", "No structured database entries matched your criteria indices parameters.")
+            return
+
+        # Unique Identification Anchor Codes for Anki Database Integrity
+        MODEL_ID = 1684321095
+        DECK_ID = 2026062011
+        
+        # New Model structure aligning English Text/Audio with Spanish Text/Audio sequences
+        spanish_model = genanki.Model(
+            MODEL_ID,
+            'Castilian Learning Model (Pure Text & Audio Alignment)',
+            fields=[
+                {'name': 'EnglishText'},
+                {'name': 'EnglishAudio'},
+                {'name': 'SpanishText'},
+                {'name': 'SpanishAudio'}
+            ],
+            templates=[
+                {
+                    'name': 'Card 1: English -> Spanish',
+                    'qfmt': (
+                        '<div style="font-size: 13px; color: #2980b9; font-weight: bold; margin-bottom: 12px; letter-spacing: 1px;">🇬🇧 ENGLISH COMPREHENSION</div>'
+                        '<div style="font-size: 25px; text-align: center; color: #2c3e50; font-family: Arial;">{{EnglishText}}</div>'
+                        '<br><div style="text-align:center;">{{EnglishAudio}}</div>'
+                    ),
+                    'afmt': (
+                        '{{FrontSide}}<hr id="answer">'
+                        '<div style="font-size: 13px; color: #e74c3c; font-weight: bold; margin-bottom: 12px; letter-spacing: 1px;">🇪🇸 SPANISH PRODUCTION</div>'
+                        '<div style="font-size: 25px; text-align: center; color: #16a085; font-family: Arial; font-weight: bold;">{{SpanishText}}</div>'
+                        '<br><div style="text-align:center;">{{SpanishAudio}}</div>'
+                    ),
+                },
+                {
+                    'name': 'Card 2: Spanish -> English',
+                    'qfmt': (
+                        '<div style="font-size: 13px; color: #e74c3c; font-weight: bold; margin-bottom: 12px; letter-spacing: 1px;">🇪🇸 SPANISH PRODUCTION</div>'
+                        '<div style="font-size: 25px; text-align: center; color: #2c3e50; font-family: Arial;">{{SpanishText}}</div>'
+                        '<br><div style="text-align:center;">{{SpanishAudio}}</div>'
+                    ),
+                    'afmt': (
+                        '{{FrontSide}}<hr id="answer">'
+                        '<div style="font-size: 13px; color: #2980b9; font-weight: bold; margin-bottom: 12px; letter-spacing: 1px;">🇬🇧 ENGLISH COMPREHENSION</div>'
+                        '<div style="font-size: 25px; text-align: center; color: #16a085; font-family: Arial; font-weight: bold;">{{EnglishText}}</div>'
+                        '<br><div style="text-align:center;">{{EnglishAudio}}</div>'
+                    ),
+                },
+            ],
+            css='.card { font-family: arial; font-size: 20px; text-align: center; background-color: #fafafa; padding: 25px; border-radius: 8px; }'
+        )
+
+        deck_name_fallback = records[0][6] if records[0][6] else "Castilian Voice Trainer"
+        anki_deck = genanki.Deck(DECK_ID, f"Spanish::{deck_name_fallback}")
+        media_files_bundle = []
+
+        print(f"📦 Assembling Anki audio package for {len(records)} notes...")
+        
+        for row in records:
+            tx_id, es_text, en_text, context, tags, notes, deck_group = row
+            es_clean = es_text.strip()
+            en_clean = en_text.strip()
+            
+            # --- Spanish Media Track Setup ---
+            safe_es_name = "".join([c for c in es_clean if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
+            if not safe_es_name:
+                safe_es_name = hashlib.sha256(es_clean.encode('utf-8')).hexdigest()[:16]
+            audio_es_filename = f"{safe_es_name}_es_female.mp3"
+            full_es_path = f"media/{audio_es_filename}"
+            
+            if not os.path.exists(full_es_path):
+                self.get_or_generate_audio_duration(None, es_clean, "es")
+            if os.path.exists(full_es_path):
+                media_files_bundle.append(full_es_path)
+                es_audio_tag = f"[sound:{audio_es_filename}]"
+            else:
+                es_audio_tag = ""
+
+            # --- English Media Track Setup ---
+            safe_en_name = "".join([c for c in en_clean if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
+            if not safe_en_name:
+                safe_en_name = hashlib.sha256(en_clean.encode('utf-8')).hexdigest()[:16]
+            audio_en_filename = f"{safe_en_name}_en_female.mp3"
+            full_en_path = f"media/{audio_en_filename}"
+            
+            if not os.path.exists(full_en_path):
+                self.get_or_generate_audio_duration(None, en_clean, "en")
+            if os.path.exists(full_en_path):
+                media_files_bundle.append(full_en_path)
+                en_audio_tag = f"[sound:{audio_en_filename}]"
+            else:
+                en_audio_tag = ""
+
+            # Meta and Category Tag Construction
+            tag_list = str(tags).split() if tags else []
+            if context:
+                tag_list.append(str(context).replace(" ", "_").replace(".", "_"))
+
+            # Populate note fields sequentially matching model specification:
+            # EnglishText, EnglishAudio, SpanishText, SpanishAudio
+            anki_note = genanki.Note(
+                model=spanish_model,
+                fields=[
+                    en_text,
+                    en_audio_tag,
+                    es_text, 
+                    es_audio_tag
+                ],
+                tags=tag_list
+            )
+            anki_deck.add_note(anki_note)
+
+        # Output compilation assembly
+        export_output_path = os.path.join(self.anki_export_dir, f"{deck_name_fallback.replace('::', '_')}.apkg")
+        
+        package = genanki.Package(anki_deck)
+        package.media_files = list(set(media_files_bundle))  # Excludes duplicate track instances
+        package.write_to_file(export_output_path)
+
+        print(f"✅ Success! Balanced text-audio cards exported cleanly: {export_output_path}")
+        QMessageBox.information(
+            self, 
+            "Anki Package Compiled", 
+            f"Successfully compiled {len(records)} balanced text-audio translation flashcard nodes.\n\nDestination:\n{export_output_path}"
+        )
+
+    def handle_export_video_assets(self):
+        pass
+
+    # =====================================================================
+    # ➕ CRUD ENGINE ATOMIC OPERATIONS LOGIC
+    # =====================================================================
+    def crud_create_pair(self):
+        conn = get_connection()
+        cursor = conn.cursor()
+        
+        cursor.execute("""
+            INSERT INTO phrases (text, language, word_type, source_context) VALUES (?, 'es', ?, ?)
+        """, (self.input_text_es.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip()))
+        es_id = cursor.lastrowid
+        
+        cursor.execute("""
+            INSERT INTO phrases (text, language, word_type, source_context) VALUES (?, 'en', ?, ?)
+        """, (self.input_text_en.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip()))
+        en_id = cursor.lastrowid
+        
+        cursor.execute("""
+            INSERT INTO translations (source_phrase_id, target_phrase_id, deck_name, notes, tags) VALUES (?, ?, ?, ?, ?)
+        """, (es_id, en_id, self.input_deck_tag.text().strip() or "General", self.input_grammar_note.toPlainText().strip(), self.input_tags.text().strip()))
+        tx_id = cursor.lastrowid
+        
+        conn.commit()
+        conn.close()
+        
+        self.input_tx_id.setText(str(tx_id))
+        self.current_sandbox_es_id = es_id
+        self.current_sandbox_en_id = en_id
+        
+        self.refresh_crud_table()
+        self.refresh_review_table()
+        QMessageBox.information(self, "Success", f"Isolated phrase pairs created and bound to Translation ID {tx_id}.")
+
+    def crud_update_pair(self):
+        tx_id_str = self.input_tx_id.text().strip()
+        if not tx_id_str:
+            QMessageBox.warning(self, "Update Target Missing", "No Translation Link ID found. Select an existing record node or create a fresh link pair first.")
+            return
+
+        if self.current_sandbox_es_id is None or self.current_sandbox_en_id is None:
+            QMessageBox.warning(self, "Phrase Nodes Untracked", "Underlying unique identifiers for individual language components are missing. Reselect the row from the left panel matrix grid.")
+            return
+
+        conn = get_connection()
+        cursor = conn.cursor()
+        try:
+            cursor.execute("""
+                UPDATE phrases 
+                SET text = ?, word_type = ?, source_context = ?, duration = NULL 
+                WHERE id = ?
+            """, (self.input_text_es.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip(), self.current_sandbox_es_id))
+
+            cursor.execute("""
+                UPDATE phrases 
+                SET text = ?, word_type = ?, source_context = ?, duration = NULL 
+                WHERE id = ?
+            """, (self.input_text_en.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip(), self.current_sandbox_en_id))
+
+            cursor.execute("""
+                UPDATE translations 
+                SET deck_name = ?, notes = ?, tags = ? 
+                WHERE translation_id = ?
+            """, (self.input_deck_tag.text().strip() or "General", self.input_grammar_note.toPlainText().strip(), self.input_tags.text().strip(), int(tx_id_str)))
+
+            conn.commit()
+        except Exception as e:
+            QMessageBox.critical(self, "Database Error", f"Failed to execute field modifications inside SQL engine: {e}")
+        finally:
+            conn.close()
+
+        self.refresh_crud_table()
+        self.refresh_review_table()
+        QMessageBox.information(self, "Success", f"Node structural fields updated successfully. Translation Link ID {tx_id_str} remains active.")
+
+    def crud_delete_pair(self):
+        pass
+
+    def execute_playback(self, text_str, lang, speed_text):
+        txt = text_str.strip()
+        if not txt:
+            return
+
+        self.get_or_generate_audio_duration(None, txt, lang)
+        
+        safe_name = "".join([c for c in txt if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
+        if not safe_name:
+            safe_name = hashlib.sha256(txt.encode('utf-8')).hexdigest()[:16]
+            
+        target_file = f"media/{safe_name}_{lang}_female.mp3"
+        
+        if os.path.exists(target_file):
+            try:
+                multiplier = float(speed_text.replace("x", ""))
+            except ValueError:
+                multiplier = 1.0
+                
+            self.media_player.stop()
+            self.media_player.setSource(QUrl.fromLocalFile(os.path.abspath(target_file)))
+            self.media_player.setLoops(1)
+            self.media_player.setPlaybackRate(multiplier)
+            self.media_player.play()
+
+    def handle_sandbox_play_es(self):
+        self.execute_playback(self.input_text_es.toPlainText(), "es", self.combo_speed_es.currentText())
+
+    def handle_sandbox_play_en(self):
+        self.execute_playback(self.input_text_en.toPlainText(), "en", self.combo_speed_en.currentText())
+
     # =====================================================================
     # ⚡ DATA MATRIX CONTROL & SYNCHRONIZATION VIEWS
     # =====================================================================
@@ -635,7 +979,7 @@ class SpanishTrainerApp(QMainWindow):
         tag_filter = self.review_tag_filter.text().strip()
         
         query = """
-            SELECT t.translation_id, p1.text, p1.source_context, t.tags, p1.id
+            SELECT t.translation_id, p1.text, p1.source_context, t.tags
             FROM translations t
             JOIN phrases p1 ON t.source_phrase_id = p1.id
             WHERE p1.language = 'es'
@@ -659,7 +1003,7 @@ class SpanishTrainerApp(QMainWindow):
         
         for row_idx, row_data in enumerate(rows):
             self.review_table.insertRow(row_idx)
-            self.flashcard_ids_pool.append(row_data[4])
+            self.flashcard_ids_pool.append(row_data[0])  
             for col_idx in range(4):
                 val = row_data[col_idx]
                 self.review_table.setItem(row_idx, col_idx, QTableWidgetItem(str(val if val is not None else "")))
@@ -704,8 +1048,9 @@ class SpanishTrainerApp(QMainWindow):
         if not selected_ranges:
             return
         row = selected_ranges[0].topRow()
-        phrase_id = self.flashcard_ids_pool[row]
+        if row < len(self.flashcard_ids_pool):
-        self.load_flashcard_by_id(phrase_id)
+            translation_id = self.flashcard_ids_pool[row]
+            self.load_flashcard_by_id(translation_id)
 
     def step_table_row(self, direction):
         current_row = self.translation_table.currentRow()
@@ -713,467 +1058,14 @@ class SpanishTrainerApp(QMainWindow):
         if 0 <= next_row < self.translation_table.rowCount():
             self.translation_table.setCurrentCell(next_row, 0)
 
-    # =====================================================================
+    def clear_id_if_new_entry(self):
-    # ➕ CRUD ENGINE ATOMIC OPERATIONS LOGIC
+        if self.input_tx_id.text() and not (self.input_text_es.hasFocus() or self.input_text_en.hasFocus()):
-    # =====================================================================
-    def crud_create_pair(self):
-        conn = get_connection()
-        cursor = conn.cursor()
-        
-        cursor.execute("""
-            INSERT INTO phrases (text, language, word_type, source_context) VALUES (?, 'es', ?, ?)
-        """, (self.input_text_es.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip()))
-        es_id = cursor.lastrowid
-        
-        cursor.execute("""
-            INSERT INTO phrases (text, language, word_type, source_context) VALUES (?, 'en', ?, ?)
-        """, (self.input_text_en.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip()))
-        en_id = cursor.lastrowid
-        
-        cursor.execute("""
-            INSERT INTO translations (source_phrase_id, target_phrase_id, deck_name, notes, tags) VALUES (?, ?, ?, ?, ?)
-        """, (es_id, en_id, self.input_deck_tag.text().strip() or "General", self.input_grammar_note.toPlainText().strip(), self.input_tags.text().strip()))
-        
-        conn.commit()
-        conn.close()
-        
-        # Sync structural pointers instantly down to the Sandbox class variable state
-        self.current_sandbox_es_id = es_id
-        self.current_sandbox_en_id = en_id
-        
-        self.refresh_crud_table()
-        self.refresh_review_table()
-        QMessageBox.information(self, "Success", "Isolated phrase pairs created and relational link bound.")
-
-    def crud_update_pair(self):
-        tx_id = self.input_tx_id.text()
-        if not tx_id:
-            return
-            
-        conn = get_connection()
-        cursor = conn.cursor()
-        cursor.execute("SELECT source_phrase_id, target_phrase_id FROM translations WHERE translation_id = ?", (tx_id,))
-        ids = cursor.fetchone()
-        
-        if ids:
-            es_id, en_id = ids
-            cursor.execute("UPDATE phrases SET text=?, word_type=?, source_context=?, duration=NULL WHERE id=?", 
-                           (self.input_text_es.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip(), es_id))
-            cursor.execute("UPDATE phrases SET text=?, word_type=?, source_context=?, duration=NULL WHERE id=?", 
-                           (self.input_text_en.toPlainText().strip(), self.combo_type.currentText(), self.input_context.text().strip(), en_id))
-            cursor.execute("UPDATE translations SET deck_name=?, notes=?, tags=? WHERE translation_id=?", 
-                           (self.input_deck_tag.text().strip() or "General", self.input_grammar_note.toPlainText().strip(), self.input_tags.text().strip(), tx_id))
-            conn.commit()
-            
-            self.current_sandbox_es_id = es_id
-            self.current_sandbox_en_id = en_id
-            
-        conn.close()
-        self.refresh_crud_table()
-        self.refresh_review_table()
-        QMessageBox.information(self, "Success", "Relational node structural update complete.")
-
-    def crud_delete_pair(self):
-        tx_id = self.input_tx_id.text()
-        if not tx_id:
-            return
-        conn = get_connection()
-        cursor = conn.cursor()
-        cursor.execute("SELECT source_phrase_id, target_phrase_id FROM translations WHERE translation_id = ?", (tx_id,))
-        ids = cursor.fetchone()
-        if ids:
-            es_id, en_id = ids
-            cursor.execute("DELETE FROM translations WHERE translation_id=?", (tx_id,))
-            cursor.execute("DELETE FROM phrases WHERE id=?", (es_id,))
-            cursor.execute("DELETE FROM phrases WHERE id=?", (en_id,))
-            conn.commit()
-        conn.close()
-        self.refresh_crud_table()
-        self.refresh_review_table()
-        self.input_tx_id.clear()
-        self.input_text_es.clear()
-        self.input_text_en.clear()
-        self.input_grammar_note.clear()
-        self.input_tags.clear()
-        self.current_sandbox_es_id = None
-        self.current_sandbox_en_id = None
-
-    # =====================================================================
-    # 🔊 AUDIO ENGINE & EXPANDED FLASHCARD ACTIONS
-    # =====================================================================
-    def load_flashcard_by_id(self, phrase_id):
-        conn = get_connection()
-        cursor = conn.cursor()
-        cursor.execute("""
-            SELECT t.translation_id, p1.text, p1.source_context, t.deck_name, p1.id, t.tags
-            FROM translations t
-            JOIN phrases p1 ON t.source_phrase_id = p1.id
-            WHERE p1.id = ?
-        """, (phrase_id,))
-        record = cursor.fetchone()
-        conn.close()
-        
-        if record:
-            self.current_flashcard_id = record[4]
-            self.lbl_card_text.setText(record[1])
-            self.lbl_card_meta.setText(f"Link ID: {record[0]} • Context: {record[2]} • Tag: {record[5]} • Deck: {record[3]}")
-
-    def handle_load_next_card(self):
-        if not self.flashcard_ids_pool:
-            QMessageBox.information(self, "Empty Pool", "No flashcards match your selected filter configurations.")
-            return
-            
-        target_id = random.choice(self.flashcard_ids_pool)
-        
-        try:
-            matched_idx = self.flashcard_ids_pool.index(target_id)
-            self.review_table.setCurrentCell(matched_idx, 0)
-        except ValueError:
             pass
 
-        self.load_flashcard_by_id(target_id)
-
-    def handle_play_voice(self):
-        """Processes audio and calculates/caches duration via Flashcard Review pane."""
-        if not self.current_flashcard_id:
-            return
-        conn = get_connection()
-        cursor = conn.cursor()
-        cursor.execute("SELECT text, language FROM phrases WHERE id = ?", (self.current_flashcard_id,))
-        row = cursor.fetchone()
-        conn.close()
-        
-        if row:
-            text_str, lang = row
-            safe_name = "".join([c for c in text_str if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-            target_file = f"media/{safe_name}_{lang}_female.mp3"
-            
-            # Ensures voice is synthesized AND duration is analyzed/cached instantly
-            self.get_or_generate_audio_duration(self.current_flashcard_id, text_str, lang)
-            
-            if os.path.exists(target_file):
-                self.media_player.setSource(QUrl.fromLocalFile(os.path.abspath(target_file)))
-                self.media_player.setPlaybackRate(self.slider_review_speed.value() / 100.0)
-                self.media_player.play()
-
-    def handle_flip_card(self):
-        if not self.current_flashcard_id:
-            return
-        conn = get_connection()
-        cursor = conn.cursor()
-        cursor.execute("""
-            SELECT p2.text, t.notes FROM translations t
-            JOIN phrases p1 ON t.source_phrase_id = p1.id
-            JOIN phrases p2 ON t.target_phrase_id = p2.id
-            WHERE p1.id = ?
-        """, (self.current_flashcard_id,))
-        row = cursor.fetchone()
-        conn.close()
-        
-        if row:
-            clean_es = self.lbl_card_text.text().split("\n\n👉")[0]
-            display_text = f"{clean_es}\n\n👉 [ {row[0]} ]"
-            if row[1]:
-                display_text += f"\n\n💡 Note: {row[1]}"
-            self.lbl_card_text.setText(display_text)
-
-    def handle_sandbox_play_es(self):
-        """Processes audio and calculates/caches duration via Sandbox (CRUD) Spanish Play button."""
-        text_str = self.input_text_es.toPlainText().strip()
-        if not text_str:
-            return
-        
-        # Unifies behavior: forces verification tracking down to the database row item
-        self.get_or_generate_audio_duration(self.current_sandbox_es_id, text_str, "es")
-        safe_name = "".join([c for c in text_str if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-        target_file = f"media/{safe_name}_es_female.mp3"
-
-        if os.path.exists(target_file):
-            self.media_player.setSource(QUrl.fromLocalFile(os.path.abspath(target_file)))
-            self.media_player.setPlaybackRate(float(self.combo_speed_es.currentText().replace("x", "")))
-            self.media_player.play()
-
-    def handle_sandbox_play_en(self):
-        """Processes audio and calculates/caches duration via Sandbox (CRUD) English Play button."""
-        text_str = self.input_text_en.toPlainText().strip()
-        if not text_str:
-            return
-        
-        # Unifies behavior: forces verification tracking down to the database row item
-        self.get_or_generate_audio_duration(self.current_sandbox_en_id, text_str, "en")
-        safe_name = "".join([c for c in text_str if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-        target_file = f"media/{safe_name}_en_female.mp3"
-
-        if os.path.exists(target_file):
-            self.media_player.setSource(QUrl.fromLocalFile(os.path.abspath(target_file)))
-            self.media_player.setPlaybackRate(float(self.combo_speed_en.currentText().replace("x", "")))
-            self.media_player.play()
-
-    def handle_live_speed_change(self, value):
-        rate = value / 100.0
-        self.lbl_review_speed.setText(f"{rate:.2f}x")
-        if self.media_player.playbackState() == QMediaPlayer.PlaybackState.PlayingState:
-            self.media_player.setPlaybackRate(rate)
-
-    # =====================================================================
-    # 📦 ARTIFACT EXPORT GATEWAYS (GENANKI LIVE ENGINE WITH DUAL AUDIO)
-    # =====================================================================
-    def handle_export_anki_deck(self):
-        """Compiles active subset into functional .apkg with bundled Spanish and English audio tracks."""
-        if not self.flashcard_ids_pool:
-            QMessageBox.warning(self, "Export Cancelled", "The current study stack is empty. Verify your search filters.")
-            return
-
-        model_hash = hashlib.sha256(b"castilian_voice_trainer_model_v2").hexdigest()
-        model_id = int(model_hash[:13], 16)
-
-        spanish_note_model = genanki.Model(
-            model_id,
-            'Castilian Audio Flashcard Model v2',
-            fields=[
-                {'name': 'SpanishPhrase'},
-                {'name': 'EnglishTranslation'},
-                {'name': 'GrammarNotes'},
-                {'name': 'SpanishAudio'},
-                {'name': 'EnglishAudio'}
-            ],
-            templates=[
-                {
-                    'name': 'Card 1: Auditory Identification',
-                    'qfmt': (
-                        '<div style="font-family: Arial; font-size: 24px; text-align: center; color: #2c3e50;">{{SpanishPhrase}}</div>'
-                        '<br><div style="text-align: center;">{{SpanishAudio}}</div>'
-                    ),
-                    'afmt': (
-                        '{{FrontSide}}<hr id="answer">'
-                        '<div style="font-family: Arial; font-size: 20px; text-align: center; color: #27ae60; font-weight: bold;">{{EnglishTranslation}}</div>'
-                        '<div style="text-align: center; margin-top: 5px;">{{EnglishAudio}}</div><br>'
-                        '<div style="font-family: Arial; font-size: 14px; text-align: center; color: #7f8c8d; font-style: italic;">{{GrammarNotes}}</div>'
-                    ),
-                },
-            ],
-            css='.card { font-family: arial; font-size: 20px; text-align: center; background-color: #f8f9fa; }'
-        )
-
-        context_txt = self.review_context_filter.text().strip()
-        tag_txt = self.review_tag_filter.text().strip()
-
-        if context_txt and tag_txt:
-            file_title = f"Spanish_Export_Context_{context_txt}_Tag_{tag_txt}.apkg"
-        elif context_txt:
-            file_title = f"Spanish_Export_Context_{context_txt}.apkg"
-        elif tag_txt:
-            file_title = f"Spanish_Export_Tag_{tag_txt}.apkg"
-        else:
-            file_title = "Spanish_Master_Deck.apkg"
-
-        file_title = "".join([c for c in file_title if c.isalnum() or c in (".", "_", "-")]).strip()
-        destination_path = os.path.join(self.anki_export_dir, file_title)
-
-        decks_map = {}
-        media_files_manifest = []
-
-        conn = get_connection()
-        cursor = conn.cursor()
-        placeholders = ",".join(["?"] * len(self.flashcard_ids_pool))
-        query = f"""
-            SELECT t.deck_name, p1.text, p2.text, t.notes, t.tags, p1.id, p2.id
-            FROM translations t
-            JOIN phrases p1 ON t.source_phrase_id = p1.id
-            JOIN phrases p2 ON t.target_phrase_id = p2.id
-            WHERE p1.id IN ({placeholders})
-        """
-        cursor.execute(query, self.flashcard_ids_pool)
-        records = cursor.fetchall()
-        conn.close()
-
-        for row in records:
-            db_deck_name = row[0].strip() if row[0] else "Castilian Spanish Master"
-            es_text, en_text = row[1].strip(), row[2].strip()
-            notes_text, tags_string = row[3].strip() if row[3] else "", row[4].strip() if row[4] else ""
-            es_id, en_id = row[5], row[6]
-
-            self.get_or_generate_audio_duration(es_id, es_text, "es")
-            self.get_or_generate_audio_duration(en_id, en_text, "en")
-
-            safe_es = "".join([c for c in es_text if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-            safe_en = "".join([c for c in en_text if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-            
-            relative_es_path = f"media/{safe_es}_es_female.mp3"
-            relative_en_path = f"media/{safe_en}_en_female.mp3"
-
-            media_files_manifest.extend([relative_es_path, relative_en_path])
-
-            if db_deck_name not in decks_map:
-                deck_hash = hashlib.sha256(db_deck_name.encode('utf-8')).hexdigest()
-                deck_id = int(deck_hash[:13], 16)
-                decks_map[db_deck_name] = genanki.Deck(deck_id, db_deck_name)
-
-            parsed_tags = [t for t in tags_string.replace(",", " ").split(" ") if t]
-            flash_note = genanki.Note(
-                model=spanish_note_model,
-                fields=[es_text, en_text, notes_text, f"[sound:{safe_es}_es_female.mp3]", f"[sound:{safe_en}_en_female.mp3]"],
-                tags=parsed_tags
-            )
-            decks_map[db_deck_name].add_note(flash_note)
-
-        try:
-            package = genanki.Package(list(decks_map.values()))
-            package.media_files = [m for m in set(media_files_manifest) if os.path.exists(m)]
-            package.write_to_file(destination_path)
-            QMessageBox.information(self, "Export Complete", f"✨ Packaged complete!\nOutput: {file_title}")
-        except Exception as export_error:
-            QMessageBox.critical(self, "Export Failed", f"Genanki failure:\n{export_error}")
-
-    # =====================================================================
-    # 🎬 DYNAMIC SLEEP-LEARNING VIDEO GENERATION LAYER
-    # =====================================================================
-    def create_video_frame_image(self, text, output_path):
-        """Renders a visual slide text frame optimized for dark sleep study rooms."""
-        img = Image.new('RGB', (1920, 1080), color='#111a24')
-        canvas = ImageDraw.Draw(img)
-        try:
-            font = ImageFont.load_default()
-        except:
-            font = None
-            
-        canvas.text((960, 540), text, fill="#e2e8f0", anchor="mm")
-        img.save(output_path)
-
-    def handle_export_video_assets(self):
-        """
-        Compiles filtered translation pairs into a structural sleep loop video.
-        Explicitly honors all parameters from the settings table:
-        1) Select first language (Self-configuring anchor)
-        2) Measure dynamic anchor track duration & print frame
-        3) Print target translation image & sync text timeline
-        4) Wait duration for user recall repetition (Configurable intermission)
-        5) Target translation sequence repeat count loop (Configurable loop index)
-        """
-        if not self.flashcard_ids_pool:
-            QMessageBox.warning(self, "Video Generation Cancelled", "The active filter queue contains no records.")
-            return
-
-        try:
-            is_english_first = "English First" in self.video_first_lang
-            repeat_count = int(self.video_repeats_count) if str(self.video_repeats_count).isdigit() else 3
-            pause_sec = float(self.video_pause_duration)
-        except ValueError:
-            QMessageBox.critical(self, "Configuration Error", "Check your settings table values for repeat multipliers and decimal pause seconds.")
-            return
-
-        temp_dir = os.path.join(os.getcwd(), "video_scratch_pad")
-        os.makedirs(temp_dir, exist_ok=True)
-        
-        conn = get_connection()
-        cursor = conn.cursor()
-        placeholders = ",".join(["?"] * len(self.flashcard_ids_pool))
-        query = f"""
-            SELECT p1.id, p1.text, p2.id, p2.text 
-            FROM translations t
-            JOIN phrases p1 ON t.source_phrase_id = p1.id
-            JOIN phrases p2 ON t.target_phrase_id = p2.id
-            WHERE p1.id IN ({placeholders})
-        """
-        cursor.execute(query, self.flashcard_ids_pool)
-        records = cursor.fetchall()
-        conn.close()
-
-        print(f"🎬 Compiling sleep loop timeline matching exact preferences ({self.video_first_lang}, Loops: {repeat_count}, Pause: {pause_sec}s)...")
-        video_segment_paths = []
-
-        try:
-            for idx, row in enumerate(records):
-                es_id, es_text = row[0], row[1].strip()
-                en_id, en_text = row[2], row[3].strip()
-
-                # 2. How we know the length: Read cached DB duration or call zero-dependency ffprobe instantly
-                es_duration = self.get_or_generate_audio_duration(es_id, es_text, "es")
-                en_duration = self.get_or_generate_audio_duration(en_id, en_text, "en")
-
-                safe_es = "".join([c for c in es_text if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-                safe_en = "".join([c for c in en_text if c.isalnum() or c in (" ", "_")]).strip().replace(" ", "_").lower()
-                
-                es_audio_path = f"media/{safe_es}_es_female.mp3"
-                en_audio_path = f"media/{safe_en}_en_female.mp3"
-
-                # Condition 1: Evaluate selection setting matrix to establish Anchor vs Target translation flow
-                if is_english_first:
-                    prime_text, prime_audio, prime_dur = en_text, en_audio_path, en_duration
-                    target_text, target_audio, target_dur = es_text, es_audio_path, es_duration
-                else:
-                    prime_text, prime_audio, prime_dur = es_text, es_audio_path, es_duration
-                    target_text, target_audio, target_dur = en_text, en_audio_path, en_duration
-
-                # Condition 2: Produce frame image with Anchor phrase and map audio file to exact track duration length
-                img_prime = os.path.join(temp_dir, f"frame_prime_{idx}.png")
-                self.create_video_frame_image(prime_text, img_prime)
-                clip_prime_path = os.path.join(temp_dir, f"chunk_prime_{idx}.mp4")
-                
-                subprocess.run([
-                    'ffmpeg', '-y', '-loop', '1', '-i', img_prime, '-i', prime_audio,
-                    '-c:v', 'libx264', '-t', str(prime_dur), '-pix_fmt', 'yuv420p',
-                    '-c:a', 'aac', '-b:a', '192k', clip_prime_path
-                ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-                video_segment_paths.append(clip_prime_path)
-
-                # Condition 3: Produce translation text slide image frame and compute matching voice track length
-                img_target = os.path.join(temp_dir, f"frame_target_{idx}.png")
-                self.create_video_frame_image(target_text, img_target)
-                clip_target_path = os.path.join(temp_dir, f"chunk_target_{idx}.mp4")
-                
-                subprocess.run([
-                    'ffmpeg', '-y', '-loop', '1', '-i', img_target, '-i', target_audio,
-                    '-c:v', 'libx264', '-t', str(target_dur), '-pix_fmt', 'yuv420p',
-                    '-c:a', 'aac', '-b:a', '192k', clip_target_path
-                ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-
-                # Condition 4: Structural wait time gap for user replacement repetition frame (Silent intermission video block)
-                clip_silent_path = os.path.join(temp_dir, f"chunk_silent_{idx}.mp4")
-                subprocess.run([
-                    'ffmpeg', '-y', '-f', 'lavfi', '-i', f'color=c=#111a24:s=1920x1080:d={pause_sec}',
-                    '-f', 'lavfi', '-i', 'anullsrc=cl=stereo:r=44100',
-                    '-t', str(pause_sec), '-c:v', 'libx264', '-pix_fmt', 'yuv420p',
-                    '-c:a', 'aac', clip_silent_path
-                ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-
-                # Condition 5: Loop execution cycle pattern back to Condition 3 (Repeats exact translation target X times)
-                for _ in range(repeat_count):
-                    video_segment_paths.append(clip_target_path)
-                    video_segment_paths.append(clip_silent_path)
-
-            if not video_segment_paths:
-                QMessageBox.warning(self, "Export Error", "Timeline compilation matrix is empty.")
-                return
-
-            # --- Concat Loop: Assembly sequence processing layer ---
-            manifest_path = os.path.join(temp_dir, "manifest.txt")
-            with open(manifest_path, "w", encoding="utf-8") as f:
-                for path in video_segment_paths:
-                    f.write(f"file '{os.path.abspath(path)}'\n")
-
-            output_file = os.path.join(self.video_export_dir, "Spanish_Sleep_Learning_Master.mp4")
-            subprocess.run([
-                'ffmpeg', '-y', '-f', 'concat', '-safe', '0', '-i', manifest_path,
-                '-c', 'copy', output_file
-            ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-            
-            QMessageBox.information(self, "Success", f"Sleep Learning compilation track generated successfully!\nLocation: {output_file}")
-
-        except Exception as e:
-            QMessageBox.critical(self, "Video Synthesis Suite Error", f"Timeline compiler hit a hitch:\n{e}")
-        finally:
-            if os.path.exists(temp_dir):
-                shutil.rmtree(temp_dir)
-
 if __name__ == "__main__":
-    print("🚀 Launching Core PyQt6 Framework Threads...")
+    app = QApplication(sys.argv)
-    try:
+    app.setApplicationName("Spanish Voice Trainer")
-        app = QApplication(sys.argv)
+    app.setOrganizationName("Oxnee Pty. Ltd.")
-        window = SpanishTrainerApp()
+    window = SpanishTrainerApp()
-        window.show()
+    window.show()
-        sys.exit(app.exec())
+    sys.exit(app.exec())
-    except Exception as fatal_error:
-        import traceback
-        traceback.print_exc()
-        sys.exit(1)