Port Brave Sync server to Rust

Use SQLite for persistence and generate Rust protobuf bindings at build time.

Add Docker image support for containerized deployment.

Co-Authored-By: codex <[email protected]>

schema/protobuf/sync_pb/app_list_specifics.proto

@@ -0,0 +1,110 @@
+// Copyright 2013 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Sync protocol datatype extension for the app list (aka app launcher).
+
+// If you change or add any fields in this file, update proto_visitors.h and
+// potentially proto_enum_conversions.{h, cc}.
+
+syntax = "proto2";
+
+option go_package = "./sync_pb";
+
+option java_multiple_files = true;
+option java_package = "org.chromium.components.sync.protocol";
+
+option optimize_for = LITE_RUNTIME;
+
+package sync_pb;
+
+// Properties of app list objects.
+message AppListSpecifics {
+  // Unique identifier for the item:
+  // * TYPE_FOLDER: Folder id (generated)
+  // * TYPE_APP: App Id
+  optional string item_id = 1;
+
+  // What type of item this is.
+  enum AppListItemType {
+    // An app, whether a web app, Android app, etc.
+    //
+    // For bookmark apps (URL shortcuts), additional information such as their
+    // URLs are kept in the AppSpecifics.bookmark_app_foobar fields.
+    TYPE_APP = 1;
+    // A request to remove any matching default installed apps.
+    TYPE_REMOVE_DEFAULT_APP = 2;
+    // A folder containing entries whose |parent_id| matches |item_id|.
+    TYPE_FOLDER = 3;
+    // Obsolete type, intended for URL shortcuts, that was never implemented.
+    TYPE_OBSOLETE_URL = 4;
+    // A "page break" item (Indicate creation of a new page in app list).
+    TYPE_PAGE_BREAK = 5;
+  }
+  optional AppListItemType item_type = 2;
+
+  // Item name (FOLDER).
+  optional string item_name = 3;
+
+  // Id of the parent (folder) item.
+  optional string parent_id = 4;
+
+  // Marked OBSOLETE because this is unused for the app list.
+  // Which page this item will appear on in the app list.
+  optional string OBSOLETE_page_ordinal = 5 [deprecated = true];
+
+  // Where on a page this item will appear.
+  optional string item_ordinal = 6;
+
+  // Where on a shelf this item will appear.
+  // Note that not all apps are pinned to the shelf by the user -- some might
+  // originate from the PinnedLauncherApps policy. See `is_user_pinned` for more
+  // details.
+  optional string item_pin_ordinal = 7;
+
+  // The color groups used for grouping together icons by colors.
+  enum ColorGroup {
+    COLOR_EMPTY = 0;
+    COLOR_WHITE = 1;
+    COLOR_RED = 2;
+    COLOR_ORANGE = 3;
+    COLOR_YELLOW = 4;
+    COLOR_GREEN = 5;
+    COLOR_BLUE = 6;
+    COLOR_MAGENTA = 7;
+    COLOR_BLACK = 8;
+  }
+
+  message IconColor {
+    // The item icon's background color.
+    optional ColorGroup background_color = 1;
+
+    // The item icon's hue.
+    optional int32 hue = 2;
+  }
+  optional IconColor item_color = 8;
+
+  // Whether the app was pinned to shelf by the user or not (apps can also be
+  // pinned by other means such as enterprise policies).
+  // The eventual consistency (a sufficient amount of time after the rollout)
+  // promise here is for this field to be synced with the pin ordinal:
+  // `item_pin_ordinal.IsValid() <=> is_user_pinned.has_value()`.
+  // However, it's okay for this contract to be violated in the meantine.
+  //
+  //  * missing value indicates that either `item_pin_ordinal` is invalid or
+  //    this field is new and hasn't yet been processed by sync.
+  //  * `true` means that the app was pinned by the user.
+  //    This definition is used in a relaxed way -- for instance, default
+  //    OS apps that are shown in the shelf (like Chrome itself) also have this
+  //    value set to true.
+  //  * `false` means that the app was pinned by PinnedLauncherApps policy.
+  //    Note that user pin has priority: if an app was first pinned by the user
+  //    and then additionally specified in PinnedLauncherApps, this value will
+  //    be set to true.
+  optional bool is_user_pinned = 9;
+
+  // Identifier for the app package of the item. Package Ids are stable and
+  // globally unique across app platforms, whereas App Id stored in item_id is
+  // not.
+  optional string promise_package_id = 10;
+}