refactor(tools): decompose skill/tools.ts into focused tool creators

src/tools/skill/native-skills.ts

@@ -0,0 +1,62 @@
+import type { SkillInfo } from "./types"
+import type { LoadedSkill } from "../../features/opencode-skill-loader"
+
+export type NativeSkillEntry = {
+  name: string
+  description: string
+  location: string
+  content: string
+}
+
+export function loadedSkillToInfo(skill: LoadedSkill): SkillInfo {
+  return {
+    name: skill.name,
+    description: skill.definition.description || "",
+    location: skill.path,
+    scope: skill.scope,
+    license: skill.license,
+    compatibility: skill.compatibility,
+    metadata: skill.metadata,
+    allowedTools: skill.allowedTools,
+  }
+}
+
+function nativeSkillToLoadedSkill(native: NativeSkillEntry): LoadedSkill {
+  return {
+    name: native.name,
+    path: native.location,
+    definition: {
+      name: native.name,
+      description: native.description,
+      template: native.content,
+    },
+    scope: "config",
+  }
+}
+
+export function mergeNativeSkills(skills: LoadedSkill[], nativeSkills: NativeSkillEntry[]): void {
+  const knownNames = new Set(skills.map((skill) => skill.name))
+  for (const native of nativeSkills) {
+    if (knownNames.has(native.name)) continue
+    skills.push(nativeSkillToLoadedSkill(native))
+    knownNames.add(native.name)
+  }
+}
+
+export function mergeNativeSkillInfos(skillInfos: SkillInfo[], nativeSkills: NativeSkillEntry[]): void {
+  const knownNames = new Set(skillInfos.map((skill) => skill.name))
+  for (const native of nativeSkills) {
+    if (knownNames.has(native.name)) continue
+    skillInfos.push({
+      name: native.name,
+      description: native.description,
+      location: native.location,
+      scope: "config",
+    })
+    knownNames.add(native.name)
+  }
+}
+
+export function isPromiseLike<TValue>(value: TValue | Promise<TValue>): value is Promise<TValue> {
+  return typeof value === "object" && value !== null && "then" in value
+}