fix(skill): read plugin-modified config for skills.paths discovery

Plugin config() hooks that mutate cfg.skills.paths (e.g. superpowers) were
invisible to skill discovery because each service's makeRuntime creates a
separate InstanceState scope. Plugin.config() now exposes the post-hook
config as the single source of truth.

Author: sjawhar

packages/opencode/src/plugin/index.ts

@@ -23,6 +23,7 @@ export namespace Plugin {
 
   type State = {
     hooks: Hooks[]
+    config: Config.Info
   }
 
   // Hook names that follow the (input, output) => Promise<void> trigger pattern
@@ -41,6 +42,7 @@ export namespace Plugin {
       output: Output,
     ) => Effect.Effect<Output>
     readonly list: () => Effect.Effect<Hooks[]>
+    readonly config: () => Effect.Effect<Config.Info>
     readonly init: () => Effect.Effect<void>
   }
 
@@ -237,7 +239,7 @@ export namespace Plugin {
             Effect.forkScoped,
           )
 
-          return { hooks }
+          return { hooks, config: cfg }
         }),
       )
 
@@ -261,11 +263,16 @@ export namespace Plugin {
         return s.hooks
       })
 
+      const cfg = Effect.fn("Plugin.config")(function* () {
+        const s = yield* InstanceState.get(state)
+        return s.config
+      })
+
       const init = Effect.fn("Plugin.init")(function* () {
         yield* InstanceState.get(state)
       })
 
-      return Service.of({ trigger, list, init })
+      return Service.of({ trigger, list, config: cfg, init })
     }),
   )
 
@@ -287,4 +294,8 @@ export namespace Plugin {
   export async function init() {
     return runPromise((svc) => svc.init())
   }
+
+  export async function config(): Promise<Config.Info> {
+    return runPromise((svc) => svc.config())
+  }
 }

packages/opencode/src/skill/index.ts

@@ -164,7 +164,11 @@ export namespace Skill {
       yield* scan(state, bus, dir, OPENCODE_SKILL_PATTERN)
     }
 
-    const cfg = yield* config.get()
+    // Read config that includes plugin config() hook mutations.
+    // Plugin.config() returns the config after all plugins' config() hooks
+    // have run, so skills.paths includes plugin-registered directories.
+    const { Plugin } = yield* Effect.promise(() => import("../plugin"))
+    const cfg = yield* Effect.promise(() => Plugin.config())
     for (const item of cfg.skills?.paths ?? []) {
       const expanded = item.startsWith("~/") ? path.join(os.homedir(), item.slice(2)) : item
       const dir = path.isAbsolute(expanded) ? expanded : path.join(directory, expanded)