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/copilot-extensibility/copilot-api-rate-limiting-resilience.md

@@ -1,6 +1,6 @@
 # API Rate Limiting and Resilience Patterns
 
-**Last updated:** 2026-02
+**Last updated:** 2026-04 | Verified: MCP 2026-04
 **Status:** GA
 **Category:** Copilot Extensibility & Integration
 
@@ -17,7 +17,7 @@ Denne referansen dekker:
 - **Plattformspesifikke kvotegrenser** (Azure OpenAI, Copilot Studio)
 - **Implementeringsmønstre** med kodeeksempler
 
-**Confidence:** Verified (Microsoft Learn MCP, januar 2026)
+**Confidence:** Verified (Microsoft Learn MCP, januar 2026) | Re-verified: MCP 2026-04
 
 ---
 
@@ -50,8 +50,9 @@ En naiv "retry on error"-tilnærming kan sende 3x mer trafikk enn nødvendig (ek
 
 **Løsning:**
 1. **Bruk durable messaging** (Azure Service Bus, Event Hubs, Queue Storage) som buffer
-2. **Dequeue i kontrollert tempo** (f.eks. 20 requests hver 200ms i stedet for 100/sekund)
-3. **Distributed lease management** for multiple prosesser (Azure Blob lease eller Zookeeper/Redis)
+2. **Dequeue i kontrollert tempo** (f.eks. 20 requests hvert 200ms i stedet for 100/sekund) — sender et jevnere dataflyt og forhindrer bottlenecks ved bursts
+3. **Distributed lease management** for multiple prosesser (Azure Blob lease eller Zookeeper/Redis/etcd/Consul)
+4. **Logisk partisjonering:** Deler kapasiteten i partisjoner (f.eks. 20 partisjoner à 25 req/s for 500 req/s totalt) — prosesser konkurrerer om eksklusive blob-leases per partisjon
 
 **Fordeler:**
 - Redusert trafikk og færre feil
@@ -60,6 +61,10 @@ En naiv "retry on error"-tilnærming kan sende 3x mer trafikk enn nødvendig (ek
 
 **Verified:** [Rate Limiting pattern - Azure Architecture Center](https://learn.microsoft.com/en-us/azure/architecture/patterns/rate-limiting-pattern)
 
+**Eksempel (Cosmos DB med 20 000 RU/s kapasitet, 10 000 records à 10 RU):**
+- Naiv retry: 30 000 requests sendt (10K + 8K + 6K + 4K + 2K) med 20 000 feil
+- Med rate limiting: 10 000 requests, ingen throttling-feil, forutsigbar gjennomstrømningstid
+
 ### 3. Circuit Breaker Pattern (Beskyttelse mot varige feil)
 
 **Formål:** Forhindre at applikasjonen spammer en service som er nede eller ikke responderer, ved å "åpne kretsen" etter N feilede forsøk.