fix(e2e): harden card selectors for session resume

Co-Authored-By: Codex <noreply@openai.com>

frontend/e2e/history.spec.ts

@@ -34,7 +34,11 @@ test.describe('session history smoke tests', () => {
       await page.getByPlaceholder('Search by ticket number...').fill(ticketNumber)
       await page.getByPlaceholder('Search by client name...').fill(clientName)
 
-      const sessionCard = page.locator('.bg-card').filter({ hasText: ticketNumber }).filter({ hasText: clientName }).first()
+      const sessionCard = page
+        .getByTestId('flow-session-card')
+        .filter({ hasText: ticketNumber })
+        .filter({ hasText: clientName })
+        .first()
       await expect(sessionCard).toBeVisible()
       await expect(sessionCard.getByText(tree.name)).toBeVisible()
 

frontend/e2e/library-start.spec.ts

@@ -24,7 +24,7 @@ test.describe('flow library start-session smoke tests', () => {
       await page.getByPlaceholder('Search flows...').fill(tree.name)
       await page.getByRole('button', { name: 'Search', exact: true }).click()
 
-      const treeCard = page.locator('.bg-card').filter({ hasText: tree.name }).first()
+      const treeCard = page.getByTestId('tree-card').filter({ hasText: tree.name }).first()
       await expect(treeCard).toBeVisible()
       await treeCard.getByRole('button', { name: /^Start(?: Session)?$/ }).click()
 

frontend/e2e/library.spec.ts

@@ -20,7 +20,7 @@ test.describe('flow library smoke tests', () => {
       await page.getByPlaceholder('Search flows...').fill(tree.name)
       await page.getByRole('button', { name: 'Search', exact: true }).click()
 
-      await expect(page.getByText(tree.name)).toBeVisible()
+      await expect(page.getByTestId('tree-card').filter({ hasText: tree.name }).first()).toBeVisible()
     } finally {
       await disposeApiContext(api)
     }

frontend/e2e/resume.spec.ts

@@ -28,7 +28,7 @@ test.describe('session resume smoke tests', () => {
       await page.getByRole('button', { name: 'Flow Sessions' }).click()
       // Active sub-tab is the default and surfaces in-progress sessions.
 
-      const resumeCard = page.locator('.bg-card').filter({ hasText: tree.name }).first()
+      const resumeCard = page.getByTestId('flow-session-card').filter({ hasText: tree.name }).first()
       await expect(resumeCard).toBeVisible()
       await resumeCard.getByRole('button', { name: 'Resume' }).first().click()
 

frontend/e2e/shares.spec.ts

@@ -31,7 +31,7 @@ test.describe('shared session management smoke tests', () => {
       ).toBeVisible()
       await expect(page.getByText(share.share_name || '')).toBeVisible()
 
-      const shareCard = page.locator('.bg-card').filter({ hasText: share.share_name || '' }).first()
+      const shareCard = page.getByTestId('share-card').filter({ hasText: share.share_name || '' }).first()
       await shareCard.getByRole('button', { name: 'Revoke' }).click()
 
       const confirmDialog = page.getByRole('dialog', { name: 'Revoke Share Link' })