T07: Cargo workspace scaffold — cb-kernel/cb-events/cb-game-runtime/games-ground/cb-sim, HashMap deny-lint, scenario format + runner stub, Criterion skeleton, Makefile, CI

crates/cb-kernel/src/ids.rs

@@ -0,0 +1,45 @@
+//! Canonical identifiers (GameKernel §2.1): newtyped, copyable, ordered.
+
+use serde::{Deserialize, Serialize};
+
+macro_rules! id_type {
+    ($(#[$doc:meta])* $name:ident($inner:ty)) => {
+        $(#[$doc])*
+        #[derive(
+            Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize,
+        )]
+        #[serde(transparent)]
+        pub struct $name(pub $inner);
+
+        impl core::fmt::Display for $name {
+            fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+                write!(f, "{}", self.0)
+            }
+        }
+    };
+}
+
+id_type!(
+    /// A single game instance.
+    GameId(u64)
+);
+id_type!(
+    /// Seat index within a game (0-based).
+    PlayerId(u8)
+);
+id_type!(
+    /// Semantic entity: problem, token, relation, card.
+    EntityId(u32)
+);
+id_type!(
+    /// Client-assigned command identifier for idempotency (GameKernel K2).
+    CommandId(u64)
+);
+id_type!(
+    /// Monotonic per-game event sequence number (GameKernel K4).
+    EventSeq(u64)
+);
+id_type!(
+    /// Deterministic game seed (GameKernel K5).
+    Seed(u64)
+);