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.

builtin-skills/software-engineer/clean-architecture/references/adapt-controller-thin.md

@@ -0,0 +1,101 @@
+---
+title: Keep Controllers Thin
+impact: MEDIUM
+impactDescription: simplifies testing, isolates HTTP concerns
+tags: adapt, controller, thin, http
+---
+
+## Keep Controllers Thin
+
+Controllers should only handle HTTP concerns: parsing requests, validating input format, calling use cases, and formatting responses. No business logic.
+
+**Incorrect (fat controller with business logic):**
+
+```python
+class OrderController:
+    @app.route('/orders', methods=['POST'])
+    def create_order(self):
+        data = request.json
+
+        # Input validation - OK in controller
+        if not data.get('items'):
+            return jsonify({'error': 'Items required'}), 400
+
+        # Business logic - WRONG in controller
+        customer = db.query(Customer).get(data['customer_id'])
+        if not customer.is_active:
+            return jsonify({'error': 'Inactive customer'}), 400
+
+        total = 0
+        for item in data['items']:
+            product = db.query(Product).get(item['product_id'])
+            if product.stock < item['quantity']:
+                return jsonify({'error': f'{product.name} out of stock'}), 400
+            total += product.price * item['quantity']
+
+        # More business logic
+        if total > customer.credit_limit:
+            return jsonify({'error': 'Exceeds credit limit'}), 400
+
+        order = Order(
+            customer_id=customer.id,
+            items=data['items'],
+            total=total
+        )
+        db.session.add(order)
+        db.session.commit()
+
+        return jsonify({'order_id': order.id}), 201
+```
+
+**Correct (thin controller delegates to use case):**
+
+```python
+class OrderController:
+    def __init__(self, create_order_use_case: CreateOrderUseCase):
+        self.create_order = create_order_use_case
+
+    @app.route('/orders', methods=['POST'])
+    def create(self):
+        # Parse HTTP request
+        data = request.json
+
+        # Validate request format (not business rules)
+        if not data.get('items'):
+            return jsonify({'error': 'Items required'}), 400
+
+        # Build command
+        command = CreateOrderCommand(
+            customer_id=data['customer_id'],
+            items=[
+                OrderItemCommand(p['product_id'], p['quantity'])
+                for p in data['items']
+            ]
+        )
+
+        # Delegate to use case
+        try:
+            result = self.create_order.execute(command)
+            return jsonify({'order_id': result.order_id}), 201
+
+        except CustomerInactiveError:
+            return jsonify({'error': 'Customer account inactive'}), 400
+        except InsufficientStockError as e:
+            return jsonify({'error': f'{e.product_name} out of stock'}), 400
+        except CreditLimitExceededError:
+            return jsonify({'error': 'Order exceeds credit limit'}), 400
+```
+
+**Controller responsibilities:**
+- Parse HTTP request to command/query objects
+- Validate request format (required fields present)
+- Call appropriate use case
+- Map exceptions to HTTP status codes
+- Format response
+
+**Use case responsibilities:**
+- Business validation (credit limits, stock)
+- Business logic (calculations, state changes)
+- Orchestrate entities and repositories
+
+Reference: [Clean Architecture - Controllers](https://www.oreilly.com/library/view/clean-architecture-a/9780134494272/ch22.xhtml)