Merge branch 'main' of https://github.com/microsoft/typespec into python/addTypedDict

Author: iscai-msft

.chronus/changes/examples-multi-response-2026-3-28-14-36-55.md

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+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: feature
+packages:
+  - "@typespec/http"
+---
+
+[API] Operation returning a union of types without status code or content type will be treated as a single response

.chronus/changes/examples-multi-response-2026-3-29-16-25-39.md

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+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: fix
+packages:
+  - "@typespec/openapi3"
+---
+
+Fix examples when operation return type have union of response mapping to same status code

.chronus/changes/feature-http-client-js-playground-2026-2-26-18-19-36.md

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+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: feature
+packages:
+  - "@typespec/bundler"
+---
+
+Add support for alloy based emitters

.chronus/changes/fix-compiler-server-null-crashes-2026-4-30-7-30-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/compiler"
+---
+
+Fix server crashes caused by undefined symbol declarations: add null checks for `getSymNode()` in hover, completion, type-details, and type-signature handlers, and use fallback name for empty DocumentSymbol names

.chronus/changes/fix-implicit-optionality-no-op-is-warn-2026-4-5-13-43-12.md

@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/http"
+---
+
+Do not emit deprecated-implicit-optionality on op is

.chronus/changes/fix-keep-setup-py-coercion-2026-4-30-5-30-0.md

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+---
+changeKind: internal
+packages:
+  - "@typespec/http-client-python"
+---
+
+Fix `run_batch.py` passing string `"true"`/`"false"` values to pygen, which caused `keep-setup-py="false"` to be treated as truthy and generate `setup.py` instead of `pyproject.toml` for all regenerated test packages.

.chronus/changes/fix-lsp-unhandled-exceptions-2026-4-30-7-30-0.md

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+---
+changeKind: fix
+packages:
+  - typespec-vscode
+---
+
+Handle unhandled exceptions in VS Code extension: add custom error handler for server crashes with restart notification, wrap commands with graceful exception handling, and add null guards to prevent extension host errors when LSP client is unavailable

.chronus/changes/fix-tspd-linter-rule-link-2026-4-27-8-54-0.md

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+---
+changeKind: fix
+packages:
+  - "@typespec/tspd"
+---
+
+Fix broken (404) links to linter rule pages on auto-generated linter reference pages. The links no longer drop the website base path.

.chronus/changes/fix-vscode-notification-dismissible-2026-4-28-4-33-0.md

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+---
+changeKind: fix
+packages:
+  - typespec-vscode
+---
+
+Show "Launching TypeSpec language service..." progress in the status bar instead of as a notification to avoid blocking the UI

.chronus/changes/fix-vscode-telemetry-result-undefined-2026-4-28-13-0-0.md

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+---
+changeKind: fix
+packages:
+  - "typespec-vscode"
+---
+
+Ensure operation telemetry events always carry a valid `result` value. Previously the `start-extension` event (and any other operation whose callback returned `void`) was sent with `result="undefined"` and classified as an error event. The `doOperationWithTelemetry` callback is now constrained to return `ResultCode | Result<...>`, so the result is always derived from the operation's return value.