Merge branch 'main' into feature/graphql

Author: FionaBronwen

…ptional-properties-2025-11-3-16-16-35.md …onus/changes/HEAD-2025-11-16-13-29-48.md.chronus/changes/python-fix-optional-properties-2025-11-3-16-16-35.md renamed to .chronus/changes/HEAD-2025-11-16-13-29-48.md .chronus/changes/python-fix-optional-properties-2025-11-3-16-16-35.md renamed to .chronus/changes/HEAD-2025-11-16-13-29-48.md

@@ -4,4 +4,4 @@ packages:
   - "@typespec/http-client-python"
 ---
 
-Fix for optional properties in flatten model to keep compatibility
+fix client default value for special headers

.chronus/changes/alloy-0.22-2025-11-12-13-21-52.md

@@ -0,0 +1,10 @@
+---
+changeKind: dependencies
+packages:
+  - "@typespec/emitter-framework"
+  - "@typespec/http-client-js"
+  - "@typespec/http-client"
+  - "@typespec/tspd"
+---
+
+Update to alloy 0.22

.chronus/changes/array-encoding-comma-newline-2025-11-13-20-53-33.md

@@ -0,0 +1,8 @@
+---
+changeKind: breaking
+packages:
+  - "@typespec/http-canonicalization"
+  - "@typespec/mutator-framework"
+---
+
+Many other bug fixes, removals, and additions as described in this pull request: https://github.com/microsoft/typespec/pull/9141

.chronus/changes/ef-updates-2025-11-4-17-44-46.md

@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@typespec/emitter-framework"
+---
+
+Add an SCCSet class which incrementally calculates strongly connected components from types added to it and updates reactive arrays with the topologically ordered types and components.

.chronus/changes/ef-updates-2025-11-4-17-45-6.md

@@ -2,7 +2,7 @@
 # Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
 changeKind: fix
 packages:
-  - "@typespec/openapi3"
+  - "@typespec/playground"
 ---
 
-Respect `@externalDocs` on properties
+[a11y] Fix problem pane not usable via keyboard

.chronus/changes/external-type-python-2025-9-20-14-28-41.md

@@ -4,4 +4,4 @@ packages:
   - "@typespec/http-specs"
 ---
 
-add test for documentation generation
+Add case for constant query