feat: add comprehensive end-to-end test suite

e2e/test_record_on_high_row.ts

@@ -0,0 +1,56 @@
+import { setupTest, startEngine, startClientInTmux, openCmdFifo, writeFifoCommand, wait, tmuxSendKeys, tmuxCapturePane, waitForPaneText, teardownTest } from './test_utils';
+
+export async function testRecordOnHighRow(): Promise<void> {
+  console.log("\nTest: RECORD ON HIGH ROW (row 5, col 0) – verifies engine & TUI");
+  setupTest();
+  const engine = await startEngine();
+  await startClientInTmux();
+  openCmdFifo();
+  await wait(500);
+
+  // Add a few channels so column 0 is usable
+  for (let i = 1; i <= 3; i++) {
+    writeFifoCommand("add");
+    await wait(100);
+  }
+
+  // Navigate to row 5, col 0
+  tmuxSendKeys("looper", "0", "j");
+  tmuxSendKeys("looper", "0", "j");
+  tmuxSendKeys("looper", "0", "j");
+  tmuxSendKeys("looper", "0", "j");
+  tmuxSendKeys("looper", "0", "j");
+  await wait(500);
+
+  // Verify selection shows row 5
+  let pane = tmuxCapturePane("looper", "0");
+  if (!pane.includes("Selected: Grid 0, Row 5, Col 0")) {
+    console.log("  FAIL: Could not navigate to Row 5, Col 0");
+    engine.kill(); teardownTest();
+    throw new Error("Navigation to row 5 failed");
+  }
+  console.log("  PASS: Navigated to Row 5, Col 0");
+
+  // Press 't' to start recording
+  tmuxSendKeys("looper", "0", "t");
+
+  // Check the TUI pane – wait until it shows 'R' near row 5
+  const paneWithR = await waitForPaneText("R", 5000);
+  const paneLines = paneWithR.split("\n");
+  let cell5Line = -1, recordLine = -1;
+  for (let i = 0; i < paneLines.length; i++) {
+    if (paneLines[i].includes(" 5")) cell5Line = i;
+    if (paneLines[i].includes("R"))  recordLine = i;
+  }
+  if (cell5Line !== -1 && recordLine !== -1 && Math.abs(recordLine - cell5Line) <= 2) {
+    console.log("  PASS: TUI grid shows 'R' near row 5");
+  } else {
+    console.log("  FAIL: TUI grid does not show 'R' near row 5");
+    console.log("  Pane:\n" + paneWithR.slice(0, 1000));
+    engine.kill(); teardownTest();
+    throw new Error("TUI indicator missing for row 5");
+  }
+
+  engine.kill();
+  teardownTest();
+}