#7227 Fix project not saving when dragging a segment (#7276)

* fix bug of not saving project when dragging a segment, add a test

* Update e2e/playwright/projects.spec.ts

Co-authored-by: Jace Browning <jacebrowning@gmail.com>

---------

Co-authored-by: Jace Browning <jacebrowning@gmail.com>

e2e/playwright/projects.spec.ts

@@ -2116,3 +2116,74 @@ test(
     })
   }
 )
+
+test(
+  'segment position changes persist after dragging and reopening project',
+  { tag: '@desktop' },
+  async ({ scene, cmdBar, context, page, editor, toolbar }, testInfo) => {
+    const projectName = 'segment-drag-test'
+
+    await context.folderSetupFn(async (dir) => {
+      const projectDir = path.join(dir, projectName)
+      await fsp.mkdir(projectDir, { recursive: true })
+      await fsp.writeFile(
+        path.join(projectDir, 'main.kcl'),
+        `sketch001 = startSketchOn(XZ)
+profile001 = startProfile(sketch001, at = [0, 0])
+  |> line(end = [0, 6])
+  |> line(end = [10, 0])
+  |> line(end = [-8, -5])
+`
+      )
+    })
+
+    await page.setBodyDimensions({ width: 1200, height: 600 })
+    const u = await getUtils(page)
+
+    await test.step('Opening the project and entering sketch mode', async () => {
+      await expect(page.getByText(projectName)).toBeVisible()
+      await page.getByText(projectName).click()
+
+      await scene.settled(cmdBar)
+
+      // go to sketch mode
+      await (await toolbar.getFeatureTreeOperation('Sketch', 0)).dblclick()
+
+      // Without this, "add axis n grid" action runs after editing the sketch and invokes codeManager.writeToFile()
+      // so we wait for that action to run first before we start editing the sketch and making sure it's saving
+      // because of those edits.
+      await page.waitForTimeout(2000)
+    })
+
+    const changedLine = 'line(end = [-6.54, -4.99])'
+
+    await test.step('Dragging the line endpoint to modify it', async () => {
+      // Get the last line's endpoint position
+      const lineEnd = await u.getBoundingBox('[data-overlay-index="3"]')
+
+      await page.mouse.move(lineEnd.x, lineEnd.y - 5)
+      await page.mouse.down()
+      await page.mouse.move(lineEnd.x + 80, lineEnd.y)
+      await page.mouse.up()
+
+      await editor.expectEditor.toContain(changedLine)
+
+      // Exit sketch mode
+      await page.keyboard.press('Escape')
+      await page.waitForTimeout(100)
+    })
+
+    await test.step('Going back to dashboard', async () => {
+      await page.getByTestId('app-logo').click()
+      await page.waitForTimeout(1000)
+    })
+
+    await test.step('Reopening the project and verifying changes are saved', async () => {
+      await page.getByText(projectName).click()
+      await scene.settled(cmdBar)
+
+      // Check if new line coordinates were saved
+      await editor.expectEditor.toContain(changedLine)
+    })
+  }
+)

src/clientSideScene/sceneEntities.ts

@@ -2504,8 +2504,8 @@ export class SceneEntities {
             forward,
             position,
           })
-          await this.codeManager.writeToFile()
         }
+        await this.codeManager.writeToFile()
       },
       onDrag: async ({
         selected,