docs(architect): weekly KB update — 106 files refreshed (2026-04)

Updates across all 5 skills: ms-ai-advisor, ms-ai-engineering,
ms-ai-governance, ms-ai-security, ms-ai-infrastructure.

Key changes:
- Language Services (Custom Text Classification, Text Analytics, QnA):
  retirement warning 2029-03-31, migration guides to Foundry/GPT-4o
- Agentic Retrieval: 50M free reasoning tokens/month (Public Preview)
- Computer Use: Claude Sonnet 4.5 (preview) + OpenAI CUA models
- Agent Registry: Risks column (M365 E7), user-shared/org-published types
- Declarative agents: schema v1.5 → v1.6, Store validation requirements
- MLflow 3: 13 built-in LLM judges, production monitoring, Genie Code
- AG-UI HITL: ApprovalRequiredAIFunction (C#) + @tool(approval_mode) (Python)
- Entra ID Ignite 2025: Agent ID Admin/Developer RBAC roles, Conditional Access
- Security Copilot: 400 SCU/month per 1000 M365 E5 licenses, auto-provisioned
- Fast Transcription API: phrase lists, 14-language multi-lingual transcription
- Azure Monitor Workbooks: Bicep support, RBAC specifics
- Power Platform Copilot: data residency (Norway/Europe → EU DB, Bing → USA)
- RAG security-rbac: 4-approach table (GA + 3 preview access control methods)
- IaC MLOps: Well-Architected OE:05 principles, Bicep/Terraform patterns
- Translator: image file batch translation Preview (JPEG/PNG/BMP/WebP)

All 106 files: Last updated 2026-04 | Verified: MCP 2026-04

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

skills/ms-ai-advisor/references/prompt-engineering/role-playing-and-persona-techniques.md

@@ -1,6 +1,6 @@
 # Role-Playing and Persona-Based Prompting
 
-**Last updated:** 2026-02
+**Last updated:** 2026-04 | Verified: MCP 2026-04
 **Status:** GA
 **Category:** Prompt Engineering & LLM Optimization
 
@@ -359,17 +359,22 @@ You are a friendly technical support specialist for [Product].
 5. ✅ Give **a way out** – "If unable, respond with 'not found'"
 6. ✅ Test and refine – Iterer basert på faktisk bruk
 
-**Prompt Node for Dynamic Personas:**
+**Prompt Node for Dynamic Personas (nlu-prompt-node, Verified 2026-04):**
 
-Bruk prompt nodes i topics for å endre persona mid-flow:
+Bruk prompt nodes i topics for å endre persona mid-flow. Legges til via "Add a tool" → "New prompt" i topic:
 
 ```yaml
-Node Type: Prompt
-Persona Override:
-  "For this specific question, act as a billing specialist.
-   Provide detailed information about payment terms and invoice procedures."
+Node Type: Prompt (Add a tool > New prompt)
+Best practices:
+  - Be specific: Klare instruksjoner gir forutsigbare svar
+  - Use examples: Illustrer forventet oppførsel
+  - Keep it brief: Lange instruksjoner → latency og timeouts
+  - Give a way out: "respond with not found if answer isn't present"
+  - Temperature: Kontroller kreativitet/determinisme per prompt
 ```
 
+Prompts kan også legges til på agent-nivå (Tools tab) eller som node i agent flows (AI capabilities → Run a prompt).
+
 ### Microsoft 365 Copilot (Enterprise)
 
 **Grounding prompts:**
@@ -670,8 +675,8 @@ If uncertain, explain limitations.
 3. [Prompt engineering techniques - Azure OpenAI](https://learn.microsoft.com/en-us/azure/ai-foundry/openai/concepts/prompt-engineering)
    *Bredere prompt-veiledning inkludert few-shot og token efficiency*
 
-4. [Use prompts in Copilot Studio](https://learn.microsoft.com/en-us/microsoft-copilot-studio/nlu-prompt-node)
-   *Best practices for Copilot Studio prompt instructions*
+4. [Use prompts in Copilot Studio](https://learn.microsoft.com/en-us/microsoft-copilot-studio/nlu-prompt-node) (Re-verified MCP 2026-04)
+   *Prompt editor features: natural language creation, template library, model selection (Azure OpenAI/Foundry), temperature, knowledge retrieval, code interpreter. Prompt-nivå: agent-tool, topic-node, agent flow-node.*
 
 5. [Azure OpenAI On Your Data - Best practices](https://learn.microsoft.com/en-us/azure/ai-foundry/openai/concepts/use-your-data)
    *System message bruk i RAG-scenarier*
@@ -689,5 +694,5 @@ If uncertain, explain limitations.
 - ✅ **Documented best practices:** Authoring techniques tabeller
 - ⚠️ **Implementation-dependent:** Nøyaktig token cost varierer med model version
 
-**Siste oppdatering:** 2026-02-04
-**Neste review:** 2026-05 (når nye prompt engineering features annonseres på Build 2026)
+**Siste oppdatering:** 2026-04-10
+**Neste review:** 2026-07