feat: migrate repo releases to manual release-please (#293)

tests/release-preview.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, test } from "bun:test"
+import { buildReleasePreview } from "../src/release/components"
+
+describe("release preview", () => {
+  test("uses changed files to determine affected components and next versions", async () => {
+    const preview = await buildReleasePreview({
+      title: "fix: adjust ce:plan-beta wording",
+      files: ["plugins/compound-engineering/skills/ce-plan-beta/SKILL.md"],
+    })
+
+    expect(preview.components).toHaveLength(1)
+    expect(preview.components[0].component).toBe("compound-engineering")
+    expect(preview.components[0].inferredBump).toBe("patch")
+    expect(preview.components[0].nextVersion).toBe("2.42.1")
+  })
+
+  test("supports per-component overrides without affecting unrelated components", async () => {
+    const preview = await buildReleasePreview({
+      title: "fix: update coding tutor prompts",
+      files: ["plugins/coding-tutor/README.md"],
+      overrides: {
+        "coding-tutor": "minor",
+      },
+    })
+
+    expect(preview.components).toHaveLength(1)
+    expect(preview.components[0].component).toBe("coding-tutor")
+    expect(preview.components[0].inferredBump).toBe("patch")
+    expect(preview.components[0].effectiveBump).toBe("minor")
+    expect(preview.components[0].nextVersion).toBe("1.3.0")
+  })
+
+  test("docs-only changes remain non-releasable by default", async () => {
+    const preview = await buildReleasePreview({
+      title: "docs: update release planning notes",
+      files: ["docs/plans/2026-03-17-001-feat-release-automation-migration-beta-plan.md"],
+    })
+
+    expect(preview.components).toHaveLength(0)
+  })
+})