feat(macros): enhance Integrable derive with validation and versioning improvements

server/crates/arbiter-macros/tests/ui/integrable/duplicate_attr.rs

@@ -0,0 +1,8 @@
+#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
+#[integrable(kind = "entity_a")]
+#[integrable(kind = "entity_b")]
+struct DuplicateAttr {
+    value: i32,
+}
+
+fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/duplicate_attr.stderr

@@ -0,0 +1,5 @@
+error: duplicate #[integrable] attribute
+ --> tests/ui/integrable/duplicate_attr.rs:3:1
+  |
+3 | #[integrable(kind = "entity_b")]
+  | ^

server/crates/arbiter-macros/tests/ui/integrable/empty_kind.rs

@@ -0,0 +1,7 @@
+#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
+#[integrable(kind = "")]
+struct EmptyKind {
+    value: i32,
+}
+
+fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/empty_kind.stderr

@@ -0,0 +1,5 @@
+error: kind must not be empty
+ --> tests/ui/integrable/empty_kind.rs:2:21
+  |
+2 | #[integrable(kind = "")]
+  |                     ^^

server/crates/arbiter-macros/tests/ui/integrable/enum_not_supported.rs

@@ -0,0 +1,8 @@
+#[derive(arbiter_macros::Integrable)]
+#[integrable(kind = "my_enum")]
+enum MyEnum {
+    A,
+    B,
+}
+
+fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/enum_not_supported.stderr

@@ -0,0 +1,5 @@
+error: #[derive(Integrable)] is only supported on structs
+ --> tests/ui/integrable/enum_not_supported.rs:3:6
+  |
+3 | enum MyEnum {
+  |      ^^^^^^

server/crates/arbiter-macros/tests/ui/integrable/invalid_kind.rs

@@ -0,0 +1,7 @@
+#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
+#[integrable(kind = "bad kind!")]
+struct InvalidKind {
+    value: i32,
+}
+
+fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/invalid_kind.stderr

@@ -0,0 +1,5 @@
+error: kind must be a valid schema name: start with a letter, contain only [a-zA-Z0-9_]
+ --> tests/ui/integrable/invalid_kind.rs:2:21
+  |
+2 | #[integrable(kind = "bad kind!")]
+  |                     ^^^^^^^^^^^

server/crates/arbiter-macros/tests/ui/integrable/missing_attr.rs

@@ -0,0 +1,6 @@
+#[derive(arbiter_macros::Hashable, arbiter_macros::Integrable)]
+struct MissingAttr {
+    value: i32,
+}
+
+fn main() {}

server/crates/arbiter-macros/tests/ui/integrable/missing_attr.stderr

@@ -0,0 +1,5 @@
+error: #[integrable(kind = "...")] is required
+ --> tests/ui/integrable/missing_attr.rs:2:8
+  |
+2 | struct MissingAttr {
+  |        ^^^^^^^^^^^