feat: add k6 load testing suite, NRQL query library, and CLAUDE.md

Add comprehensive load testing infrastructure:
- k6 auth-dashboard flow (login → profile → dashboard KPIs → widgets → refresh → logout)
- k6 CRUD flow (units, vendors, journal entries, payments, reports)
- Environment configs with staging/production/local thresholds
- Parameterized user pool CSV matching app roles
- New Relic NRQL query library (25+ queries for perf analysis)
- Empty baseline.json structure for all tested endpoints
- CLAUDE.md documenting full stack, auth, route map, and conventions

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

load-tests/config/environments.json

@@ -0,0 +1,53 @@
+{
+  "staging": {
+    "baseUrl": "https://staging.hoaledgeriq.com",
+    "stages": {
+      "rampUp": 10,
+      "steady": 25,
+      "rampDown": 0
+    },
+    "thresholds": {
+      "http_req_duration_p95": 2000,
+      "login_p95": 1500,
+      "dashboard_p95": 3000,
+      "crud_write_p95": 2000,
+      "crud_read_p95": 1500,
+      "error_rate": 0.05
+    },
+    "notes": "Staging environment – smaller infra, relaxed thresholds"
+  },
+  "production": {
+    "baseUrl": "https://app.hoaledgeriq.com",
+    "stages": {
+      "rampUp": 20,
+      "steady": 50,
+      "rampDown": 0
+    },
+    "thresholds": {
+      "http_req_duration_p95": 1000,
+      "login_p95": 800,
+      "dashboard_p95": 1500,
+      "crud_write_p95": 1000,
+      "crud_read_p95": 800,
+      "error_rate": 0.01
+    },
+    "notes": "Production thresholds – strict SLA targets"
+  },
+  "local": {
+    "baseUrl": "http://localhost:3000",
+    "stages": {
+      "rampUp": 5,
+      "steady": 10,
+      "rampDown": 0
+    },
+    "thresholds": {
+      "http_req_duration_p95": 3000,
+      "login_p95": 2000,
+      "dashboard_p95": 5000,
+      "crud_write_p95": 3000,
+      "crud_read_p95": 2000,
+      "error_rate": 0.10
+    },
+    "notes": "Local dev – generous thresholds for single-machine testing"
+  }
+}