Merge branch 'main' into copilot/add-test-case-for-pull-4408

Author: msyyc

.chronus/changes/copilot-add-end2end-test-cases-2026-4-13-14-24-31.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/http-client-java"
+---
+
+Add e2e tests

.chronus/changes/copilot-update-nodejs-dependencies-yet-again-2026-4-13-2-38-43.md

@@ -0,0 +1,7 @@
+---
+changeKind: dependencies
+packages:
+  - "@typespec/http-client-java"
+---
+
+Update http-client-java Node.js dependencies and regenerate Java test assets

.chronus/changes/fix-openapi3-uniqueitems-parameter-2026-05-12.md

@@ -0,0 +1,15 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/openapi3"
+---
+
+Propagate `@JsonSchema.uniqueItems` to query, path and header parameter schemas. The decorator was only applied to body model property schemas; for HTTP parameter schemas (which go through `applyIntrinsicDecorators`) it was silently dropped, so arrays declared on operation parameters never emitted `uniqueItems: true` even when the decorator was present.
+
+```tsp
+op listUsers(
+  @query
+  @JsonSchema.uniqueItems
+  $select?: ("id" | "displayName")[],
+): User[];
+```

.chronus/changes/fix-python-numeric-float-2026-4-29-23-55-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@typespec/http-client-java"
+---
+
+Support crossLanguageVersion

.chronus/changes/http-client-java_support-cross-language-version-2026-4-13-13-31-18.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/json-schema"
+---
+
+Add the explicit `<Type, boolean>` generic to the `useStateMap` call backing `@uniqueItems`, matching the convention used by every other state-backed decorator in the compiler. This makes `getUniqueItems` return `boolean | undefined` rather than `unknown | undefined` and lets downstream emitters consume the value without a cast.

.chronus/changes/internal-json-schema-uniqueitems-type-2026-05-12.md

@@ -0,0 +1,17 @@
+---
+changeKind: feature
+packages:
+  - "@typespec/compiler"
+---
+
+Enabled resolution of member properties and metaproperties through template parameters based on constraints.
+
+```tsp
+model Resource {
+  id: string;
+}
+
+model Read<R extends Resource> {
+  id: R.id;
+}
+```

.chronus/changes/python-fix-paging-list-typing-2026-4-28-5-36-18.md

@@ -0,0 +1,9 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/html-program-viewer"
+  - "@typespec/http-server-csharp"
+  - "@typespec/tspd"
+---
+
+Updated some packages to account for introduction of new TemplateParameterAccess virtual type.

.chronus/changes/witemple-msft-templateparameter-metaproperties-2026-2-2-13-17-55.md

@@ -36,6 +36,7 @@ Typical task: `add e2e test case for <package>, scenario is <url-to-tsp-file>`.
 
 - The execution of `mvn` and `npm` command should be done in the test directory `<repository-root>/packages/http-client-java/generator/http-client-generator-test`.
 - Only commit Java files written by you. Do not commit any generated files.
+- If no scenario URL provided, search the related files in either https://github.com/microsoft/typespec/tree/main/packages/http-specs/specs or https://github.com/Azure/typespec-azure/tree/main/packages/azure-http-specs/specs
 
 0. Run `pwsh Setup.ps1` in `generator/http-client-generator-test` to set up the environment if not done before.
 1. The source files for the generated client under test are located in `generator/http-client-generator-test/src/main/java/<package>`.