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

Cargo.toml

@@ -0,0 +1,35 @@
+[workspace]
+resolver = "2"
+members = [
+    "crates/cb-kernel",
+    "crates/cb-events",
+    "crates/cb-game-runtime",
+    "games/ground",
+    "tools/cb-sim",
+]
+
+[workspace.package]
+edition = "2021"
+version = "0.1.0"
+license-file = "LICENSE"
+
+[workspace.dependencies]
+cb-kernel = { path = "crates/cb-kernel" }
+cb-events = { path = "crates/cb-events" }
+cb-game-runtime = { path = "crates/cb-game-runtime" }
+games-ground = { path = "games/ground" }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+serde_yaml = "0.9"
+sha2 = "0.10"
+rand_core = "0.6"
+rand_chacha = "0.3"
+criterion = { version = "0.5", default-features = false }
+
+# Determinism discipline (GameKernel K6): HashMap/HashSet are deny-linted
+# workspace-wide; semantic state must use ordered collections.
+[workspace.lints.clippy]
+disallowed_types = "deny"
+
+[profile.release]
+lto = "thin"