feat: add E2E smoke tests, architecture docs, and operations runbook

- 27 Playwright E2E tests covering login (3 roles), CC Agent pages
  (call desk, call history, patients, appointments, my performance,
  sidebar, sign-out), and Supervisor pages (all 11 pages + sidebar)
- Tests run against live EC2 at ramaiah.engage.healix360.net
- Last test completes sign-out to release agent session for next run
- Architecture doc with updated Mermaid diagram including telephony
  dispatcher, service discovery, and multi-tenant topology
- Operations runbook with SSH access (VPS + EC2), accounts, container
  reference, deploy steps, Redis ops, and troubleshooting guide

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package-lock.json

@@ -42,6 +42,7 @@
                 "tailwindcss-react-aria-components": "^2.0.1"
             },
             "devDependencies": {
+                "@playwright/test": "^1.59.1",
                 "@tailwindcss/postcss": "^4.1.18",
                 "@trivago/prettier-plugin-sort-imports": "^5.2.2",
                 "@types/jssip": "^3.5.3",
@@ -1077,6 +1078,22 @@
                 "@jridgewell/sourcemap-codec": "^1.4.14"
             }
         },
+        "node_modules/@playwright/test": {
+            "version": "1.59.1",
+            "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.59.1.tgz",
+            "integrity": "sha512-PG6q63nQg5c9rIi4/Z5lR5IVF7yU5MqmKaPOe0HSc0O2cX1fPi96sUQu5j7eo4gKCkB2AnNGoWt7y4/Xx3Kcqg==",
+            "dev": true,
+            "license": "Apache-2.0",
+            "dependencies": {
+                "playwright": "1.59.1"
+            },
+            "bin": {
+                "playwright": "cli.js"
+            },
+            "engines": {
+                "node": ">=18"
+            }
+        },
         "node_modules/@react-aria/autocomplete": {
             "version": "3.0.0-rc.6",
             "resolved": "http://localhost:4873/@react-aria/autocomplete/-/autocomplete-3.0.0-rc.6.tgz",
@@ -5471,6 +5488,53 @@
                 "url": "https://github.com/sponsors/jonschlinkert"
             }
         },
+        "node_modules/playwright": {
+            "version": "1.59.1",
+            "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.59.1.tgz",
+            "integrity": "sha512-C8oWjPR3F81yljW9o5OxcWzfh6avkVwDD2VYdwIGqTkl+OGFISgypqzfu7dOe4QNLL2aqcWBmI3PMtLIK233lw==",
+            "dev": true,
+            "license": "Apache-2.0",
+            "dependencies": {
+                "playwright-core": "1.59.1"
+            },
+            "bin": {
+                "playwright": "cli.js"
+            },
+            "engines": {
+                "node": ">=18"
+            },
+            "optionalDependencies": {
+                "fsevents": "2.3.2"
+            }
+        },
+        "node_modules/playwright-core": {
+            "version": "1.59.1",
+            "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.59.1.tgz",
+            "integrity": "sha512-HBV/RJg81z5BiiZ9yPzIiClYV/QMsDCKUyogwH9p3MCP6IYjUFu/MActgYAvK0oWyV9NlwM3GLBjADyWgydVyg==",
+            "dev": true,
+            "license": "Apache-2.0",
+            "bin": {
+                "playwright-core": "cli.js"
+            },
+            "engines": {
+                "node": ">=18"
+            }
+        },
+        "node_modules/playwright/node_modules/fsevents": {
+            "version": "2.3.2",
+            "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+            "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+            "dev": true,
+            "hasInstallScript": true,
+            "license": "MIT",
+            "optional": true,
+            "os": [
+                "darwin"
+            ],
+            "engines": {
+                "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+            }
+        },
         "node_modules/postcss": {
             "version": "8.5.8",
             "resolved": "http://localhost:4873/postcss/-/postcss-8.5.8.tgz",