History Export to CSV

specs/gymflow-test-plan.md

@@ -798,6 +798,21 @@ Comprehensive test plan for the GymFlow web application, covering authentication
 
 **Expected Results:**
   - The sporadic set is permanently removed from the history.
+
+#### 4.8. A. Session History - Export CSV
+
+**File:** `tests/history-export.spec.ts`
+
+**Steps:**
+  1. Log in as a regular user.
+  2. Complete at least one workout session.
+  3. Navigate to the 'History' section.
+  4. Click the 'Export CSV' button (Download icon).
+
+**Expected Results:**
+  - A CSV file is downloaded.
+  - The CSV filename contains 'gymflow_history'.
+  - The CSV content contains headers and data rows corresponding to the user's workout history.
   - No error messages.
 
 #### 4.8. B. Performance Statistics - View Volume Chart

specs/requirements.md

@@ -190,6 +190,13 @@ The core feature. States: **Idle**, **Active Session**, **Sporadic Mode**.
 *   **3.5.2 Statistics**
     *   Visualizes progress over time.
     *   **Key Metrics**: Volume (Weight * Reps), Frequency, Body Weight trends.
+*   **3.5.3 Data Export**
+    *   **Trigger**: "Export CSV" button in History view.
+    *   **Logic**:
+        *   Generates a denormalized CSV file containing all workout history.
+        *   **Structure**: One row per set.
+        *   **Columns**: Includes session attributes (time, plan, note, bodyweight) and set attributes (exercise details, metrics, side, linked exercise flags).
+    *   **Output**: Browser download of a `.csv` file.
 
 ### 3.6. User Interface Logic
 *   **3.6.1 Navigation**