bump version to 0.2.0

🤖 generated with [claude code](https://claude.com/claude-code)

co-authored-by: claude <[e-mail]>

api/Cargo.toml

···
 [package]
 name = "slices"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2024"
 
 [dependencies]

api/flake.nix

···
 
           commonArgs = {
             inherit src;
-            version = "0.1.0";
+            version = "0.2.0";
             strictDeps = true;
             pname = "slices";
             name = "slices";
···
           ociLabels = {
             "org.opencontainers.image.title" = "slices";
             "org.opencontainers.image.description" = "API service for Slices";
-            "org.opencontainers.image.version" = "0.1.0";
+            "org.opencontainers.image.version" = "0.2.0";
             "org.opencontainers.image.authors" = "Slices Social";
             "org.opencontainers.image.licenses" = "MIT";
           };