chore: import upstream snapshot with attribution

tests/unit/compression/rtk-render-terraform.test.ts

@@ -0,0 +1,37 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { renderTerraformPlan } from "../../../open-sse/services/compression/engines/rtk/renderers/terraformPlan.ts";
+
+const det = {
+  type: "terraform-plan",
+  command: "terraform plan",
+  confidence: 1,
+  category: "infra",
+  matchedPatterns: [],
+};
+
+test("summarizes plan into +N ~M -K plus resources", () => {
+  const input = `Terraform will perform the following actions:
+  # aws_instance.web will be created
+  + resource "aws_instance" "web" { ... many lines ... }
+  # aws_s3_bucket.data will be updated in-place
+  ~ resource "aws_s3_bucket" "data" { ... }
+Plan: 1 to add, 1 to change, 0 to destroy.`;
+  const r = renderTerraformPlan(input, det);
+  assert.equal(r.changed, true);
+  assert.ok(r.text.includes("Plan: +1 ~1 -0"));
+  assert.ok(r.text.includes("aws_instance.web"));
+  assert.ok(!r.text.includes('resource "aws_instance" "web" {'));
+  // Regression (core review): the verb must not be duplicated ("will be will be created").
+  assert.ok(!r.text.includes("will be will be"));
+  assert.ok(r.text.includes("# aws_instance.web will be created"));
+  assert.ok(r.text.includes("# aws_s3_bucket.data will be updated in-place"));
+});
+
+test("no-changes ⇒ no-op", () => {
+  const r = renderTerraformPlan(
+    "No changes. Your infrastructure matches the configuration.",
+    det,
+  );
+  assert.equal(r.changed, false);
+});