Import the pebble dev site into devsite/

devsite/source/_guides/migration/index.md

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+---
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+title: Migrating Older Apps
+description: |
+  Details on how to update older apps affected by API changes.
+guide_group: migration
+menu: false
+permalink: /guides/migration/
+generate_toc: false
+hide_comments: true
+---
+
+When the Pebble SDK major version is increased (such as from 2.x to 3.x), some
+breaking API and build process changes are made. This means that some apps
+written for an older SDK may no longer compile with the newer one.
+
+To help developers transition their code, these guides detail the specific
+changes they should look out for and highlighting the changes to APIs they may
+have previously been using. When breaking changes are made in the future, new
+guides will be added here to help developers make the required changes.
+
+
+## Contents
+
+{% include guides/contents-group.md group=page.group_data %}