perf(ci): snellere workflow + Epic runner naam

- Runner hernoemd naar 'Epic runner'
- Env variabelen als global env (niet per step)
- fetch-depth: 1 voor snellere checkout
- Knip verwijderd (traag, niet kritiek)
- Docker BuildKit caching
- Health check opgeschoond

src/lib/ci-workflow-contract.test.ts

@@ -20,14 +20,14 @@ describe("CI workflow", () => {
 	});
 
 	it("uses Gitea SHA for check checkout", () => {
-		expect(workflow).toContain("SKIP_ENV_VALIDATION=1");
+		expect(workflow).toContain("SKIP_ENV_VALIDATION");
 	});
 
 	it("includes tag triggers", () => {
 		expect(workflow).toContain('tags:\n      - "v*"');
 	});
 
-	it("runs knip for unused code detection", () => {
-		expect(workflow).toContain("pnpm knip");
+	it("sets test environment variables as global env", () => {
+		expect(workflow).toContain("SKIP_ENV_VALIDATION: 1");
 	});
 });

src/lib/deploy-workflow-contract.test.ts

@@ -40,7 +40,6 @@ describe("production deploy workflow", () => {
 	it("runs HTTP health check after deployment", () => {
 		expect(deployJob).toContain("/api/health");
 		expect(deployJob).toContain('"database":true');
-		expect(deployJob).toContain("HEALTH_OK=0");
 	});
 
 	it("cleans up old Docker images after deploy", () => {