feat(history): add Tauri commands for transcript persistence and FTS5 search

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

crates/storage/src/database.rs

@@ -114,6 +114,64 @@ pub async fn delete_transcript(pool: &SqlitePool, id: &str) -> Result<()> {
     Ok(())
 }
 
+// --- Segment CRUD ---
+
+/// Batch insert segments for a transcript.
+pub async fn insert_segments(
+    pool: &SqlitePool,
+    transcript_id: &str,
+    segments: &[(f64, f64, &str)],
+) -> Result<()> {
+    for (start, end, text) in segments {
+        sqlx::query(
+            "INSERT INTO segments (transcript_id, start_time, end_time, text) VALUES (?, ?, ?, ?)",
+        )
+        .bind(transcript_id)
+        .bind(start)
+        .bind(end)
+        .bind(text)
+        .execute(pool)
+        .await
+        .map_err(|e| KonError::StorageError(format!("Insert segment failed: {e}")))?;
+    }
+    Ok(())
+}
+
+/// Row type for segment query results.
+#[derive(Debug, Clone)]
+pub struct SegmentRow {
+    pub id: i64,
+    pub transcript_id: String,
+    pub start_time: f64,
+    pub end_time: f64,
+    pub text: String,
+}
+
+/// Retrieve all segments for a transcript, ordered by start time.
+pub async fn get_segments(
+    pool: &SqlitePool,
+    transcript_id: &str,
+) -> Result<Vec<SegmentRow>> {
+    let rows = sqlx::query(
+        "SELECT id, transcript_id, start_time, end_time, text FROM segments WHERE transcript_id = ? ORDER BY start_time ASC",
+    )
+    .bind(transcript_id)
+    .fetch_all(pool)
+    .await
+    .map_err(|e| KonError::StorageError(format!("Get segments failed: {e}")))?;
+
+    Ok(rows
+        .into_iter()
+        .map(|r| SegmentRow {
+            id: r.get("id"),
+            transcript_id: r.get("transcript_id"),
+            start_time: r.get("start_time"),
+            end_time: r.get("end_time"),
+            text: r.get("text"),
+        })
+        .collect())
+}
+
 // --- Task CRUD ---
 
 pub async fn insert_task(

crates/storage/src/lib.rs

@@ -3,10 +3,10 @@ pub mod file_storage;
 pub mod migrations;
 
 pub use database::{
-    clear_timer_state, complete_task, delete_task, delete_transcript, get_setting,
-    get_timer_state, get_transcript, init, insert_task, insert_task_v2, insert_transcript,
-    list_tasks, list_tasks_by_status, list_transcripts, log_error, reorder_tasks,
-    save_timer_state, search_transcripts, set_setting, update_task_v2,
-    InsertTranscriptParams, TaskRow, TimerStateRow, TranscriptRow,
+    clear_timer_state, complete_task, delete_task, delete_transcript, get_segments,
+    get_setting, get_timer_state, get_transcript, init, insert_segments, insert_task,
+    insert_task_v2, insert_transcript, list_tasks, list_tasks_by_status, list_transcripts,
+    log_error, reorder_tasks, save_timer_state, search_transcripts, set_setting,
+    update_task_v2, InsertTranscriptParams, SegmentRow, TaskRow, TimerStateRow, TranscriptRow,
 };
 pub use file_storage::{app_data_dir, database_path, recordings_dir};