feat!: migrate to unthrown 3.0.0

.changeset/unthrown-v3.md

@@ -0,0 +1,12 @@
+---
+"@temporal-contract/contract": major
+"@temporal-contract/worker": major
+"@temporal-contract/client": major
+"@temporal-contract/testing": major
+---
+
+Upgrade to [`unthrown`](https://github.com/btravstack/unthrown) 3.0.0.
+
+The published packages' `unthrown` peer-dependency range moves to `^3`. unthrown 3.0.0's breaking change — removing the standalone `Defect` constructor in favour of a `defect` argument passed into `fromPromise` / `fromThrowable`'s `qualify` callback — does not affect temporal-contract, which never constructs defects (every boundary maps rejections to a modeled error). Everything else we use (`Ok` / `Err`, `TaggedError`, `matchTags`, `fromPromise` / `fromSafePromise`, `result.match({ ok, err, defect })`, `.toAsync()`, and the `result.isOk()` / `isErr()` / `isDefect()` narrowing) is unchanged, so no source changes were required.
+
+**Breaking for consumers**: bump your own `unthrown` install to `^3`.

docs/guide/migrating-to-unthrown.md

@@ -30,7 +30,7 @@ This page is an end-to-end mapping for upgrading existing code.
   // package.json
   "dependencies": {
 -   "neverthrow": "^8"
-+   "unthrown": "^2"
++   "unthrown": "^3"
   }
 ```
 

packages/client/package.json

@@ -76,7 +76,7 @@
   "peerDependencies": {
     "@temporalio/client": "^1",
     "@temporalio/common": "^1",
-    "unthrown": "^2"
+    "unthrown": "^3"
   },
   "engines": {
     "node": ">=22.19.0"

packages/contract/package.json

@@ -75,7 +75,7 @@
     "vitest": "catalog:"
   },
   "peerDependencies": {
-    "unthrown": "^2"
+    "unthrown": "^3"
   },
   "peerDependenciesMeta": {
     "unthrown": {

packages/worker/package.json

@@ -95,7 +95,7 @@
     "@temporalio/common": "^1",
     "@temporalio/worker": "^1",
     "@temporalio/workflow": "^1",
-    "unthrown": "^2"
+    "unthrown": "^3"
   },
   "engines": {
     "node": ">=22.19.0"

pnpm-workspace.yaml

@@ -55,7 +55,7 @@ catalog:
   "@temporalio/worker": 1.18.1
   "@temporalio/workflow": 1.18.1
   "@types/node": 24.13.2
-  "@unthrown/vitest": 2.0.0
+  "@unthrown/vitest": 3.0.0
   "@vitest/coverage-v8": 4.1.8
   arktype: 2.2.1
   knip: 6.18.0
@@ -71,7 +71,7 @@ catalog:
   typedoc: 0.28.19
   typedoc-plugin-markdown: 4.12.0
   typescript: 6.0.3
-  unthrown: 2.0.0
+  unthrown: 3.0.0
   valibot: 1.4.1
   vitest: 4.1.8
   zod: 4.4.3