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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

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Markdown

---
title: Entities Contain Only Enterprise Business Rules
impact: CRITICAL
impactDescription: enables reuse across applications, prevents coupling
tags: entity, business-rules, domain, purity
---
## Entities Contain Only Enterprise Business Rules
Entities encapsulate enterprise-wide business rules that would exist regardless of automation. They must not contain application-specific logic, persistence code, or UI concerns.
**Incorrect (entity mixed with infrastructure concerns):**
```typescript
class Invoice {
id: string
items: LineItem[]
status: InvoiceStatus
dueDate: Date
calculateTotal(): Money {
return this.items.reduce((sum, item) => sum.add(item.amount), Money.zero())
}
isOverdue(): boolean {
return this.status === InvoiceStatus.Unpaid && new Date() > this.dueDate
}
markPaid(): void {
this.status = InvoiceStatus.Paid
database.invoices.update(this) // Entity cannot be tested without database
emailService.send(this.customerEmail, 'Payment received') // Coupled to email system
}
}
```
**Correct (entity contains only business rules):**
```typescript
class Invoice {
id: string
items: LineItem[]
status: InvoiceStatus
dueDate: Date
calculateTotal(): Money {
return this.items.reduce((sum, item) => sum.add(item.amount), Money.zero())
}
isOverdue(): boolean {
return this.status === InvoiceStatus.Unpaid && new Date() > this.dueDate
}
markPaid(): void {
if (this.status !== InvoiceStatus.Unpaid) {
throw new InvalidOperationError('Invoice already processed')
}
this.status = InvoiceStatus.Paid
}
}
```
**Benefits:**
- Entity can be used in billing system, reporting system, mobile app
- Business rules tested without database or email setup
- Rules documented in one place, not scattered across application
Reference: [Clean Architecture - Entities](https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html)