fix: Dozens of bare waitForTimeout() calls remain throughout e2e tests (#418)

Add eslint-disable-next-line no-restricted-syntax comments with
justification to the 10 bare waitForTimeout() calls in
tests/e2e/usertest/helpers.ts.

All waitForTimeout calls in the spec files (01–06 and all usertest
specs) were already properly documented after PR #417. helpers.ts was
the only remaining file with bare calls:
- 6 in connectWallet(): wallet connector panel animation and
  connection handshake have no observable DOM event to await
- 4 in attemptStake(): Ponder indexing lag, debounced form handlers

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/e2e/usertest/helpers.ts

@@ -147,9 +147,11 @@ export async function connectWallet(page: Page): Promise<void> {
   await page.evaluate(() => {
     window.dispatchEvent(new Event('resize'));
   });
+  // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for Vue's useMobile composable to recalculate after a resize event in E2E tests. See AGENTS.md #Engineering Principles.
   await page.waitForTimeout(500);
-  
+
   // Give time for wallet connectors to initialize
+  // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for wallet connector initialization; connectors load asynchronously with no observable DOM event. See AGENTS.md #Engineering Principles.
   await page.waitForTimeout(2_000);
   
   // Try desktop Connect button first
@@ -158,13 +160,15 @@ export async function connectWallet(page: Page): Promise<void> {
   if (await connectButton.isVisible({ timeout: 5_000 })) {
     console.log('[HELPER] Found desktop Connect button');
     await connectButton.click();
+    // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for the wallet connector slideout panel animation to settle. See AGENTS.md #Engineering Principles.
     await page.waitForTimeout(1_000);
-    
+
     // Click the first wallet connector
     const injectedConnector = page.locator('.connectors-element').first();
     if (await injectedConnector.isVisible({ timeout: 5_000 })) {
       console.log('[HELPER] Clicking wallet connector...');
       await injectedConnector.click();
+      // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for the injected wallet provider to complete connection handshake. See AGENTS.md #Engineering Principles.
       await page.waitForTimeout(2_000);
     }
   } else {
@@ -173,11 +177,13 @@ export async function connectWallet(page: Page): Promise<void> {
     if (await mobileLoginIcon.isVisible({ timeout: 2_000 })) {
       console.log('[HELPER] Using mobile login icon');
       await mobileLoginIcon.click();
+      // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for the wallet connector slideout panel animation to settle. See AGENTS.md #Engineering Principles.
       await page.waitForTimeout(1_000);
-      
+
       const injectedConnector = page.locator('.connectors-element').first();
       if (await injectedConnector.isVisible({ timeout: 5_000 })) {
         await injectedConnector.click();
+        // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for the injected wallet provider to complete connection handshake. See AGENTS.md #Engineering Principles.
         await page.waitForTimeout(2_000);
       }
     }
@@ -513,8 +519,9 @@ export async function attemptStake(
   
   const baseUrl = page.url().split('#')[0];
   await page.goto(`${baseUrl}stake`);
-  
+
   // Wait longer for page to load and stats to initialize
+  // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for Ponder indexing lag and UI re-renders after on-chain transactions in E2E tests. See AGENTS.md #Engineering Principles.
   await page.waitForTimeout(3_000);
   
   try {
@@ -542,11 +549,13 @@ export async function attemptStake(
     const stakeAmountInput = page.getByLabel('Staking Amount');
     await stakeAmountInput.waitFor({ state: 'visible', timeout: 10_000 });
     await stakeAmountInput.fill(amount);
+    // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for debounced input handlers to settle after programmatic fill. See AGENTS.md #Engineering Principles.
     await page.waitForTimeout(500);
-    
+
     // Select tax rate
     const taxSelect = page.getByRole('combobox', { name: 'Tax' });
     await taxSelect.selectOption({ value: taxRateIndex });
+    // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for debounced form state to update after select option change. See AGENTS.md #Engineering Principles.
     await page.waitForTimeout(500);
     
     // Take screenshot before attempting to click
@@ -612,6 +621,7 @@ export async function attemptStake(
       // May complete instantly
     }
     
+    // eslint-disable-next-line no-restricted-syntax -- waitForTimeout: no event source exists for Ponder indexing lag and UI re-renders after on-chain transactions in E2E tests. See AGENTS.md #Engineering Principles.
     await page.waitForTimeout(3_000);
     recordAction(`Stake ${amount} KRK at ${taxRateIndex}% tax`, true, undefined, report);
     console.log(`[${personaName}] Stake successful`);