docs(microsoft-agent-framework): 10-API Class Deep Dives Vol. 5 — source-verified 1.19.0 additions

src/content/docs/microsoft-agent-framework-guide/python/index.mdx

@@ -1,6 +1,6 @@
 ---
 title: "Microsoft Agent Framework (Python)"
-description: "Unified Python agent SDK — core stable at agent-framework 1.18.0, with a consolidated Class & API Reference covering 200+ classes across workflows, agents, memory, tools, security, skills, and more."
+description: "Unified Python agent SDK — core stable at agent-framework 1.19.0, with a consolidated Class & API Reference covering 200+ classes across workflows, agents, memory, tools, security, skills, and more."
 framework: microsoft-agent-framework
 language: python
 sidebar:
@@ -19,7 +19,7 @@ import { Card, CardGrid, LinkCard, Aside } from '@astrojs/starlight/components';
     ```
   </Card>
   <Card title="Version" icon="information">
-    Core **1.18.0** stable · `agent-framework-foundry` and `agent-framework-openai` bundled via `agent-framework==1.18.0` · September 2026 · Python 3.10 – 3.13 · consolidated **Class & API Reference**
+    Core **1.19.0** stable · `agent-framework-foundry` and `agent-framework-openai` bundled via `agent-framework==1.19.0` · September 2026 · Python 3.10 – 3.13 · consolidated **Class & API Reference**
   </Card>
   <Card title="Best for" icon="puzzle">
     Azure-native agents, multi-agent orchestration via `WorkflowBuilder`, cross-framework A2A, declarative YAML agents.
@@ -118,11 +118,12 @@ A guided reading order across the comprehensive guide, 2025 features, advanced a
   <LinkCard title="10-Class Deep Dives Vol. 2 (1.16.0)" href="/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives_v2/" description="Source-verified deep dives for the second batch of 10 classes — verified against agent-framework 1.16.0." />
   <LinkCard title="10-Class Deep Dives Vol. 3 (1.17.0)" href="/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives_v3/" description="Source-verified deep dives: WorkflowBuilder, SlidingWindowStrategy, TruncationStrategy, ContextWindowCompactionStrategy, LocalEvaluator, InlineSkill, FileAccessProvider, MemoryContextProvider, FileHistoryProvider, MCPWebsocketTool — all verified against agent-framework 1.17.0." />
   <LinkCard title="10-API Deep Dives Vol. 4 (1.18.0)" href="/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives_v4/" description="Source-verified deep dives: VectorStoreField, VectorStoreCollectionDefinition, InMemoryCollection, InMemoryStore, Filter, FilterGroup, SecretString, load_settings (function), create_agent_hooks_middleware (function), GroupChatBuilder — all verified against agent-framework 1.18.0." />
+  <LinkCard title="10-API Deep Dives Vol. 5 (1.19.0)" href="/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives_v5/" description="Source-verified deep dives: WorkflowEvent, AgentContext, MiddlewareBundle, ConversationSplit/ConversationSplitter, VectorStoreHistoryProvider, MemoryStore/MemoryFileStore, MemoryTopicRecord, WorkflowRunResult, FunctionInvocationContext, ChatOptions — all verified against agent-framework 1.19.0." />
 </CardGrid>
 
 ## What's shipped (September 2026 introspection)
 
-- **Stable core** — `agent-framework-core 1.18.0` (September 2026). The full class-by-class API surface — previously spread across 49 per-volume "class deep dive" pages — is now consolidated into one [Class & API Reference](/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_comprehensive_guide/#class--api-reference) section of the comprehensive guide (plus an azure-ai-agents add-on appendix). See the [Revision history](#revision-history) below for the version-by-version summary.
+- **Stable core** — `agent-framework-core 1.19.0` (September 2026). The full class-by-class API surface — previously spread across 49 per-volume "class deep dive" pages — is now consolidated into one [Class & API Reference](/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_comprehensive_guide/#class--api-reference) section of the comprehensive guide (plus an azure-ai-agents add-on appendix). See the [Revision history](#revision-history) below for the version-by-version summary.
 - **First-party chat clients** — `agent_framework.foundry.FoundryChatClient`, `agent_framework.openai.OpenAIChatClient`, `agent_framework.anthropic.AnthropicClient`, plus Bedrock / Ollama in the `1.0.0b` provider line.
 - **Skills (experimental)** — `MemoryStore`, `SkillResource`, `InlineSkillResource`, `ClassSkill`, `InlineSkill`, `FileSkill` now emit `ExperimentalWarning` on import — do not depend on these APIs in production yet.
 - **Middleware** — `@chat_middleware` / `@agent_middleware` / `@function_middleware` decorators and base classes; pass `middleware=[...]` (must be a list in 2026 releases).
@@ -169,6 +170,7 @@ Ready for the full walk-through? **[Start with Core Fundamentals →](/microsoft
 
 | Date | Version | Changes |
 |------|---------|---------|
+| 2026-09-21 | 1.19.0 | Installed and introspected `agent-framework==1.19.0` source. Added [10-API Deep Dives Vol. 5](/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives_v5/) covering WorkflowEvent, AgentContext, MiddlewareBundle, ConversationSplit/ConversationSplitter, VectorStoreHistoryProvider, MemoryStore/MemoryFileStore, MemoryTopicRecord, WorkflowRunResult, FunctionInvocationContext, and ChatOptions — all with source-verified constructors, method tables, and runnable examples. Vol. 5 LinkCard added to Reference section. Version card and description updated to 1.19.0. |
 | 2026-09-14 | 1.18.0 | Installed and introspected `agent-framework==1.18.0` source. Added [10-API Deep Dives Vol. 4](/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives_v4/) covering eight classes (VectorStoreField, VectorStoreCollectionDefinition, InMemoryCollection, InMemoryStore, Filter, FilterGroup, SecretString, GroupChatBuilder) and two functions (load_settings, create_agent_hooks_middleware) — all with source-verified constructors, method tables, and runnable examples. Vol. 2 and Vol. 3 LinkCards added to Reference section. Version card updated to 1.18.0. |
 | 2026-09-08 | 1.17.0 | Consistency sweep. Version card and page description moved 1.15.0 → 1.17.0 to match the newest source-verified deep dives (Vol. 3, `agent-framework==1.17.0`); comprehensive-guide header now states agent-framework 1.17.0 as latest and 1.14.0 as the verified-against version. Zero → Hero deep links into the 2025-features page retargeted to headings that exist. No package installation or symbol verification performed. |
 | 2026-08-24 | 1.15.0 | Upgraded to agent-framework 1.15.0 (latest). Added [10-Class Deep Dives](/microsoft-agent-framework-guide/python/microsoft_agent_framework_python_class_deep_dives/) document covering WorkflowViz, FileMemoryProvider, AgentModeProvider, BackgroundAgentsProvider, ToolApprovalMiddleware, SwitchCaseEdgeGroup, MessageInjectionMiddleware, ToolResultCompactionStrategy, SummarizationStrategy, and TokenBudgetComposedStrategy — all source-verified with runnable examples. |