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AgentCompany/builtin-skills/software-engineer/clean-architecture/references/bound-main-component.md
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ZacharyZhang-NY e74dafcd36 Silence render-disposed spam, unbreak bundled skills, drop board wake
Three independently ugly bugs that all fed the same log flood:

* Electron's `WebFrameMain.send` writes every "Render frame was disposed"
  to stderr via `console.error`. When the worker fans a second
  agent-event past a reloading renderer, we produced thousands of
  identical lines and stalled the main loop on stderr I/O. Added a
  `mainFrame.detached` guard so the send is short-circuited before
  Electron's own catch block fires, and installed a targeted filter in
  `suppress-warnings.ts` (now actually imported from the entry point)
  so the specific `console.error("Error sending from webFrameMain:"…)`
  noise never reaches the terminal. Any other payload still surfaces.

* `dispatchAgentMessage` accepted the human-reader sentinel as a wake
  target when an agent replied to `__board__` — `wakeAgentIfPossible`
  then called `db.getAgent("__board__")`, threw, and the dispatcher
  kept repeating on every send. Strip `HUMAN_SENDER_ID` at
  `resolveMessageWakeTargets`, and keep a defense-in-depth guard in the
  heartbeat so a stray caller (future automation fan-out) cannot
  reintroduce the crash.

* Pi's skills loader rejects any SKILL.md whose frontmatter `name`
  diverges from its parent directory. The four bundled `my-writing-style`
  copies declared `name: writing-style-skill`, so every install emitted
  a warning and dropped the skill. They also lived as orphan gitlinks
  (mode 160000 without .gitmodules), and the global `*.md` gitignore
  hid every other SKILL.md from version control. Fixed the frontmatter
  to match the dir, converted the dangling submodules to plain trees,
  and allowlisted `builtin-skills/**/*.md` so a fresh clone carries the
  catalogue instead of silently losing it.
2026-04-20 08:13:48 -04:00

3.0 KiB

title, impact, impactDescription, tags
title impact impactDescription tags
Treat Main as a Plugin to the Application MEDIUM-HIGH enables multiple configurations, simplifies testing bound, main, composition-root, plugin

Treat Main as a Plugin to the Application

The Main component is the lowest-level, dirtiest component. It creates all factories, strategies, and global facilities, then hands control to high-level abstractions. Treat it as a plugin that can be swapped.

Incorrect (Main mixed with application logic):

// main.go
func main() {
    db := connectDatabase()

    // Business logic in main
    http.HandleFunc("/orders", func(w http.ResponseWriter, r *http.Request) {
        var order Order
        json.NewDecoder(r.Body).Decode(&order)

        // Validation logic
        if order.Total < 0 {
            http.Error(w, "Invalid total", 400)
            return
        }

        // Direct database calls
        db.Exec("INSERT INTO orders ...")

        // Response formatting
        json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
    })

    http.ListenAndServe(":8080", nil)
}
// Cannot test without starting HTTP server
// Cannot run with different database

Correct (Main as composition root):

// main.go - Production entry point
func main() {
    app := bootstrap(ProductionConfig{
        DatabaseURL: os.Getenv("DATABASE_URL"),
        Port:        os.Getenv("PORT"),
    })
    app.Run()
}

// bootstrap.go - Composition root
func bootstrap(config Config) *Application {
    // Create infrastructure
    db := postgres.NewConnection(config.DatabaseURL)

    // Create repositories (implement domain interfaces)
    orderRepo := postgres.NewOrderRepository(db)
    userRepo := postgres.NewUserRepository(db)

    // Create use cases (depend on interfaces)
    placeOrder := usecases.NewPlaceOrderUseCase(orderRepo)
    getOrders := usecases.NewGetOrdersUseCase(orderRepo)

    // Create controllers (call use cases)
    orderController := controllers.NewOrderController(placeOrder, getOrders)

    // Wire up HTTP routes
    router := http.NewRouter()
    router.POST("/orders", orderController.Create)
    router.GET("/orders", orderController.List)

    return &Application{
        Router: router,
        Port:   config.Port,
    }
}

// main_test.go - Test entry point
func TestMain(t *testing.T) {
    app := bootstrap(TestConfig{
        DatabaseURL: "memory://",  // In-memory for tests
        Port:        "0",          // Random port
    })
    // Test against app
}

// main_dev.go - Development entry point
func main() {
    app := bootstrap(DevConfig{
        DatabaseURL: "localhost:5432",
        Port:        "3000",
    })
    app.RunWithHotReload()
}

Benefits:

  • Swap database, logging, configuration per environment
  • Integration tests use real wiring with test doubles
  • Dev/staging/prod share same composition logic

Reference: Clean Architecture - The Main Component