feat: provide v2 Plugin Component contracts and offline validation

Validate exact Component interfaces and static Tool/DCDL schemas without guest execution. Share canonical archive packing and independent package/artifact verification; build real pure and HTTPS PDK fixtures and retire v1/Service authoring stubs.

resources/plugin/templates/rust-component-https/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "yoi-rust-component-https-template"
+version = "0.1.0"
+edition = "2024"
+license = "MIT"
+publish = false
+
+# Keep the embedded template checkable in-place without making it a member of
+# Yoi's root workspace. A copied starter remains a normal standalone package.
+[workspace]
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+yoi-plugin-pdk = { path = "../../../../crates/plugin-pdk" }
+
+# Out-of-tree Plugin packages should replace the local path with a pinned
+# Yoi source commit. Use rev, not branch, for reproducible builds:
+# yoi-plugin-pdk = { git = "https://gitea.hareworks.net/Hare/yoi.git", package = "yoi-plugin-pdk", rev = "<pinned-yoi-commit-sha>" }