### Fixed and refactored

- Fixed the inexplicable behaviour when retrieving chunks from the network.
    - Chunk manager has been layered to responsible its own areas and duties. e.g., `DatabaseWriteLayer`, `DatabaseReadLayer`, `NetworkLayer`, `CacheLayer`,and `ArrivalWaitLayer`.
        - All layers have test now!
        - `LayeredChunkManager` has been implemented to manage these layers. Also tested.
    - `EntryManager` has been mostly rewritten, and also tested.

- Now we can configure `Never warn` for remote storage size notification, again.

vitest.config.unit.ts

@@ -1,16 +1,30 @@
 import { defineConfig, mergeConfig } from "vitest/config";
 import viteConfig from "./vitest.config.common";
 
+const importOnlyFiles = ["**/encryption/encryptHKDF.ts"];
 export default mergeConfig(
     viteConfig,
     defineConfig({
+        resolve: {
+            alias: {
+                obsidian: "", // prevent accidental imports of obsidian types in unit tests,
+            },
+        },
         test: {
             name: "unit-tests",
             include: ["**/*unit.test.ts", "**/*.unit.spec.ts"],
             exclude: ["test/**"],
             coverage: {
                 include: ["src/**/*.ts"],
-                exclude: ["**/*.test.ts", "src/lib/**/*.test.ts", "**/_*", "src/lib/apps", "src/lib/src/cli"],
+                exclude: [
+                    "**/*.test.ts",
+                    "src/lib/**/*.test.ts",
+                    "**/_*",
+                    "src/lib/apps",
+                    "src/lib/src/cli",
+                    "**/*_obsolete.ts",
+                    ...importOnlyFiles,
+                ],
                 provider: "v8",
                 reporter: ["text", "json", "html"],
             },