diff --git a/backend/downstream/README.md b/backend/downstream/README.md
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index 2c6a0925..00000000
--- a/backend/downstream/README.md
+++ /dev/null
@@ -1,77 +0,0 @@
-# Downstream Custom Plugins
-
-This directory is the designated location for downstream (deployment-specific) Cordis plugins.
-
-## Architecture
-
-```
-downstream/
-├── README.md
-└── plugins/
-    └── custom_example/       # Example plugin — copy & rename to get started
-        └── plugin.go
-```
-
-Downstream plugins follow the same `core.Plugin` contract as platform plugins:
-
-```go
-type Plugin interface {
-    Name() string
-    Apply(ctx *core.Context) error
-}
-```
-
-## Rules
-
-1. **Naming**: Each plugin directory name becomes its import path and plugin ID (kebab-case recommended).
-2. **Dependencies**: Downstream plugins may import `core/`, `core/contracts/`, `pkg/`, and `plugins/infra/` packages from the platform. They MUST NOT import domain plugin internal packages — use `core.Inject[contracts.XxxService](ctx)` instead.
-3. **Registration**: Add your downstream plugin to `cmd/app.go` before the platform plugins or after, depending on which services it needs:
-   ```go
-   // newWaveletApp in cmd/app.go
-   app.Use(
-       database.New(),
-       cache.New(),
-       logger.New(),
-       storage.New(),
-       // ... platform domain plugins ...
-       custom_hello.New(), // your downstream plugin
-       driver_http.New(),
-       driver_asynq_worker.New(),
-       driver_asynq_cron.New(),
-   )
-   ```
-4. **Migration**: If your plugin needs database tables, embed SQL files in a `migrations/` directory and register via `ctx.Migrations().Register(...)` in `Apply()`.
-
-## Quick Start
-
-```go
-package custom_example
-
-import (
-    "github.com/Rain-kl/Wavelet/core"
-    "github.com/Rain-kl/Wavelet/core/contracts"
-    "github.com/gin-gonic/gin"
-)
-
-type Plugin struct{}
-
-func New() *Plugin { return &Plugin{} }
-
-func (p *Plugin) Name() string { return "custom_example" }
-
-func (p *Plugin) Apply(ctx *core.Context) error {
-    // Example: register a route that uses AuthService
-    var authSvc contracts.AuthService
-    if err := ctx.Using(func(svc contracts.AuthService) { authSvc = svc }); err != nil {
-        return err
-    }
-
-    g := ctx.Router().Group("/api/v1/custom", authSvc.RequireAuthMiddleware().(gin.HandlerFunc))
-    g.GET("/hello", func(c *gin.Context) {
-        user, _ := authSvc.GetCurrentUser(c.Request.Context())
-        c.JSON(200, gin.H{"message": "Hello " + user.Username})
-    })
-
-    return nil
-}
-```
\ No newline at end of file
diff --git a/backend/downstream/plugins/custom_example/consts/consts.go b/backend/downstream/plugins/custom_example/consts/consts.go
new file mode 100644
index 00000000..d709a2be
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+++ b/backend/downstream/plugins/custom_example/consts/consts.go
@@ -0,0 +1 @@
+package consts
diff --git a/backend/downstream/plugins/custom_example/controller/hello/hello.go b/backend/downstream/plugins/custom_example/controller/hello/hello.go
new file mode 100644
index 00000000..f72082fb
--- /dev/null
+++ b/backend/downstream/plugins/custom_example/controller/hello/hello.go
@@ -0,0 +1,5 @@
+// =================================================================================
+// This is auto-generated by GoFrame CLI tool only once. Fill this file as you wish.
+// =================================================================================
+
+package hello
diff --git a/backend/downstream/plugins/custom_example/dao/.gitkeep b/backend/downstream/plugins/custom_example/dao/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/migrations/.gitkeep b/backend/downstream/plugins/custom_example/migrations/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/migrations/postgres/.gitkeep b/backend/downstream/plugins/custom_example/migrations/postgres/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/migrations/sqlite/.gitkeep b/backend/downstream/plugins/custom_example/migrations/sqlite/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/model/.gitkeep b/backend/downstream/plugins/custom_example/model/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/model/do/.gitkeep b/backend/downstream/plugins/custom_example/model/do/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/model/entity/.gitkeep b/backend/downstream/plugins/custom_example/model/entity/.gitkeep
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diff --git a/backend/downstream/plugins/custom_example/service/.gitkeep b/backend/downstream/plugins/custom_example/service/.gitkeep
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