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>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "claudeman",
-  "version": "0.1388",
+  "version": "0.1396",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "claudeman",
-      "version": "0.1388",
+      "version": "0.1396",
       "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
@@ -29,11 +29,14 @@
       },
       "devDependencies": {
         "@types/node": "^20.14.0",
+        "@types/pngjs": "^6.0.5",
         "@types/react": "^19.2.9",
         "@types/uuid": "^10.0.0",
         "@vitest/coverage-v8": "^4.0.18",
         "agent-browser": "^0.6.0",
+        "pixelmatch": "^6.0.0",
         "playwright": "^1.58.0",
+        "pngjs": "^7.0.0",
         "puppeteer": "^24.36.0",
         "tsx": "^4.15.0",
         "typescript": "^5.9.3",
@@ -1347,6 +1350,16 @@
         "undici-types": "~6.21.0"
       }
     },
+    "node_modules/@types/pngjs": {
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/@types/pngjs/-/pngjs-6.0.5.tgz",
+      "integrity": "sha512-0k5eKfrA83JOZPppLtS2C7OUtyNAl2wKNxfyYl9Q5g9lPkgBl/9hNyAu6HuEH2J4XmIv2znEpkDd0SaZVxW6iQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/react": {
       "version": "19.2.9",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.9.tgz",
@@ -4097,6 +4110,19 @@
       "integrity": "sha512-BndPH67/JxGExRgiX1dX0w1FvZck5Wa4aal9198SrRhZjH3GxKQUKIBnYJTdj2HDN3UQAS06HlfcSbQj2OHmaw==",
       "license": "MIT"
     },
+    "node_modules/pixelmatch": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/pixelmatch/-/pixelmatch-6.0.0.tgz",
+      "integrity": "sha512-FYpL4XiIWakTnIqLqvt3uN4L9B3TsuHIvhLILzTiJZMJUsGvmKNeL4H3b6I99LRyerK9W4IuOXw+N28AtRgK2g==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "pngjs": "^7.0.0"
+      },
+      "bin": {
+        "pixelmatch": "bin/pixelmatch"
+      }
+    },
     "node_modules/pkce-challenge": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/pkce-challenge/-/pkce-challenge-5.0.1.tgz",
@@ -4138,6 +4164,16 @@
         "node": ">=18"
       }
     },
+    "node_modules/pngjs": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-7.0.0.tgz",
+      "integrity": "sha512-LKWqWJRhstyYo9pGvgor/ivk2w94eSjE3RGVuzLGlr3NmD8bf7RcYGze1mNdEHRP6TRP6rMuDHk5t44hnTRyow==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.19.0"
+      }
+    },
     "node_modules/postcss": {
       "version": "8.5.6",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",