feat(scenario): run logs, lint/format tooling, CONTRIBUTING

- add ScenarioRunLogEntity to persist step script output to DB
- stepLogger dual-writes to NestJS logger and DB (fire-and-forget)
- add GET /scenarios/:id/run/:runId returning run, stepRuns and logs
- add POST /scenarios/:id/run/:runId/wait (polls until terminal state)
- 9 new integration tests for the two endpoints (136 total)
- add eslint with typescript-eslint and eslint-config-prettier
- add npm scripts: format, lint, lint:fix
- resolve all lint errors across src and test (no any types)
- add CONTRIBUTING.md covering dev workflow

test/auth.controller.spec.ts

@@ -1,6 +1,6 @@
-import { INestApplication } from '@nestjs/common';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
+import { INestApplication } from "@nestjs/common";
+import request from "supertest";
+import { buildTestApp } from "./app.harness";
 
 /**
  * Auth controller integration tests.
@@ -9,7 +9,7 @@ import { buildTestApp } from './app.harness';
  * exercised here (those belong to e2e tests with real credentials).
  * We cover the parts that can be tested without external dependencies.
  */
-describe('AuthController', () => {
+describe("AuthController", () => {
   let app: INestApplication;
 
   beforeAll(async () => {
@@ -22,39 +22,39 @@ describe('AuthController', () => {
 
   // ── GET /keys ──────────────────────────────────────────────────────────────
 
-  describe('GET /keys', () => {
-    it('returns 200 with a keys array', async () => {
-      const res = await request(app.getHttpServer()).get('/keys').expect(200);
-      expect(res.body).toHaveProperty('keys');
+  describe("GET /keys", () => {
+    it("returns 200 with a keys array", async () => {
+      const res = await request(app.getHttpServer()).get("/keys").expect(200);
+      expect(res.body).toHaveProperty("keys");
       expect(Array.isArray(res.body.keys)).toBe(true);
     });
   });
 
   // ── POST /login ────────────────────────────────────────────────────────────
 
-  describe('POST /login', () => {
-    it('returns 400 when body is empty', async () => {
-      await request(app.getHttpServer()).post('/login').send({}).expect(400);
+  describe("POST /login", () => {
+    it("returns 400 when body is empty", async () => {
+      await request(app.getHttpServer()).post("/login").send({}).expect(400);
     });
 
-    it('returns 400 when key is missing', async () => {
+    it("returns 400 when key is missing", async () => {
       await request(app.getHttpServer())
-        .post('/login')
-        .send({ environmentName: 'test-env' })
+        .post("/login")
+        .send({ environmentName: "test-env" })
         .expect(400);
     });
 
-    it('returns 400 when environmentName is missing', async () => {
+    it("returns 400 when environmentName is missing", async () => {
       await request(app.getHttpServer())
-        .post('/login')
-        .send({ key: 'some-key' })
+        .post("/login")
+        .send({ key: "some-key" })
         .expect(400);
     });
 
-    it('returns 400 when key file does not exist', async () => {
+    it("returns 400 when key file does not exist", async () => {
       await request(app.getHttpServer())
-        .post('/login')
-        .send({ key: 'nonexistent-key', environmentName: 'test-env' })
+        .post("/login")
+        .send({ key: "nonexistent-key", environmentName: "test-env" })
         .expect(404); // NotFoundException for missing environment
     });
   });