fix: Ralph wizard uses file-based prompt to avoid screen escaping issues

- Add /api/sessions/:id/ralph-prompt/write endpoint to write prompt to @ralph_prompt.md
- Wizard now writes full prompt to file, then sends simple read command to Claude
- Fix session readiness check to wait for prompt character instead of notWorking flag
- Add E2E test infrastructure for ralph-loop workflow (port 3190)
- Add ralph-wizard-prod.mjs script for production testing

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

test/e2e/e2e.config.ts

@@ -0,0 +1,45 @@
+/**
+ * E2E Test Configuration
+ * Contains port allocations and shared test configuration
+ */
+
+// Port allocations for E2E tests
+// See CLAUDE.md test port table for full list
+export const E2E_PORTS = {
+  QUICK_START: 3183,
+  SESSION_INPUT: 3184,
+  SESSION_DELETE: 3185,
+  MULTI_SESSION: 3186,
+  AGENT_INTERACTIONS: 3187,
+  INPUT_INTERACTIONS: 3188,
+  RESPAWN_FLOW: 3189,
+  RALPH_LOOP: 3190,
+} as const;
+
+// Timeouts for various operations
+export const E2E_TIMEOUTS = {
+  /** Default test timeout */
+  TEST: 90000,
+  /** Browser fixture creation */
+  BROWSER_SETUP: 30000,
+  /** Server startup */
+  SERVER_STARTUP: 15000,
+  /** Session creation */
+  SESSION_CREATE: 30000,
+  /** Screen creation verification */
+  SCREEN_VERIFY: 15000,
+  /** Terminal visibility */
+  TERMINAL_VISIBLE: 10000,
+  /** Agent spawn detection */
+  AGENT_SPAWN: 30000,
+  /** General element visibility */
+  ELEMENT_VISIBLE: 15000,
+} as const;
+
+// Test case naming prefix (for easy cleanup)
+export const E2E_CASE_PREFIX = 'e2e-test-';
+
+// Generate unique case name for tests
+export function generateCaseName(testName: string): string {
+  return `${E2E_CASE_PREFIX}${testName}-${Date.now()}`;
+}