feat(skills): load config sources in runtime discovery

src/features/opencode-skill-loader/merger.test.ts

@@ -0,0 +1,55 @@
+import { describe, expect, it } from "bun:test"
+import type { BuiltinSkill } from "../builtin-skills/types"
+import type { CommandDefinition } from "../claude-code-command-loader/types"
+import { mergeSkills } from "./merger"
+import type { LoadedSkill, SkillScope } from "./types"
+
+function createLoadedSkill(scope: SkillScope, name: string, description: string): LoadedSkill {
+  const definition: CommandDefinition = {
+    name,
+    description,
+    template: "template",
+  }
+
+  return {
+    name,
+    definition,
+    scope,
+  }
+}
+
+describe("mergeSkills", () => {
+  it("gives higher scopes priority over config source skills", () => {
+    // given
+    const builtinSkills: BuiltinSkill[] = [
+      {
+        name: "priority-skill",
+        description: "builtin",
+        template: "builtin-template",
+      },
+    ]
+
+    const configSourceSkills: LoadedSkill[] = [
+      createLoadedSkill("config", "priority-skill", "config source"),
+    ]
+    const userSkills: LoadedSkill[] = [
+      createLoadedSkill("user", "priority-skill", "user skill"),
+    ]
+
+    // when
+    const merged = mergeSkills(
+      builtinSkills,
+      undefined,
+      configSourceSkills,
+      userSkills,
+      [],
+      [],
+      [],
+    )
+
+    // then
+    expect(merged).toHaveLength(1)
+    expect(merged[0]?.scope).toBe("user")
+    expect(merged[0]?.definition.description).toBe("user skill")
+  })
+})