Add conciseness rules and product claims guidance to proofread-business-writing skill

proofread-business-writing/SKILL.md

@@ -45,6 +45,25 @@ Avoid being too prescriptive. We are consultants making recommendations, not dir
 - **Use commas instead of em dashes.**
   - Instead of: "The three hikers — exhausted, hungry, and cold — finally reached the summit as the sun began to set."
   - Say: "The three hikers, exhausted, hungry, and cold, finally reached the summit as the sun began to set."
+  - In list items and colon-introduced clauses, use colons instead of em dashes:
+    - Instead of: "iPad (iOS 14+) — one per check-in lane"
+    - Say: "iPad (iOS 14+): one per check-in lane"
+    - Instead of: "Walk-in attendees can also register on-site — they select the event"
+    - Say: "Walk-in attendees can also register on-site: they select the event"
+
+### Be concise
+
+Cut anything that doesn't serve the next question the reader would ask.
+
+- Remove over-qualifiers and superlatives. Instead of "the single biggest lever for throughput," just say the action and let the reader draw the conclusion.
+- Remove connectivity or compatibility details unless the reader specifically asked about them (e.g., don't list Wi-Fi/Bluetooth options for a printer unless asked).
+- Don't list every supported model or option. Name what's relevant and stop.
+- Use example-agnostic language ("large events") over specific scenarios ("football games or graduations") unless the customer raised a specific use case.
+- Section transitions should use periods, not colons. Treat section headings as standalone titles.
+
+### Product claims
+
+When proofreading product-related content, soften or remove claims that are not documented in official Verkada Help pages. If a claim can't be verified but is likely true from field experience, present it as an observation rather than a product fact.
 
 ### Text formatting