chore: establish development baseline

Cargo.toml

@@ -0,0 +1,40 @@
+[workspace]
+resolver = "2"
+members = [
+    "core",
+    "adapters",
+    "infrastructure",
+    "crates/bat-assetbundle",
+    "crates/bat-cas-engine",
+    "crates/bat-ffi",
+    "crates/bat-patch",
+]
+
+[workspace.package]
+version = "0.1.0"
+edition = "2021"
+authors = ["BlueArchive Toolkit Team"]
+license = "MIT"
+
+[workspace.dependencies]
+# 共享依赖版本管理（2026-06-27 最新稳定版本）
+tokio = { version = "1.52", features = ["full"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+anyhow = "1.0"
+thiserror = "2.0"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }
+blake3 = "1.8"
+rayon = "1.12"
+async-trait = "0.1"
+
+[profile.release]
+opt-level = 3
+lto = true
+codegen-units = 1
+strip = true
+
+[profile.dev]
+opt-level = 0
+debug = true