Merge bfloat16-senbei workspace restructure, bump to 1.1.0

Adopts the fork's workspace split (senbei-cli / senbei-crypto / senbei-io /
senbei-metadata / senbei-pe), its structured error taxonomy, entry-transform
and layout validation, PE32 dd8 key-formula selection with a skip floor, the
CRT entry-stub dd8 oracle, and the extensionless-file scan skip.

Kept from senbei on top of the restructure:
- ManagedExe detection/routing and the CLR (COR20 + BSJB) metadata restore
  in the EXE pipeline.
- The RET+int3 padding fingerprint as the primary dd8 padding signal, ahead
  of the mutated-position 0xCC fallback.
- docs/, .github/, samples/, tests/ (moved to senbei-cli/tests), and the
  web/ wasm frontend (rewired to the split crates), all of which the fork
  had dropped.
- The fork's README compatibility matrix is not taken: it names real games,
  which the public-repo hygiene rules forbid.
- The wasm32 localtime fallback in logfile and unpack_bytes_force_exe (the
  web app's trap-recovery entry point), both lost in the restructure.

Golden corpus: 35/35 byte-identical. clippy -D warnings clean; wasm32 check
clean for the full workspace.

Cargo.toml

@@ -1,39 +1,39 @@
-[package]
-name = "senbei"
-version = "1.0.1"
+[workspace]
+members = [
+    "senbei-cli",
+    "senbei-crypto",
+    "senbei-io",
+    "senbei-metadata",
+    "senbei-pe",
+]
+default-members = ["senbei-cli"]
+# The wasm frontend is its own crate (own Cargo.lock, cdylib) and stays outside
+# the workspace.
+exclude = ["web"]
+resolver = "2"
+
+[workspace.package]
+version = "1.1.0"
 edition = "2024"
-description = "Static unpacker for Crackproof-protected PE files"
 license = "AGPL-3.0-only"
-keywords = ["unpacker", "reverse-engineering", "pe", "security-research"]
-categories = ["command-line-utilities"]
 
-[lib]
-name = "senbei"
-path = "src/lib.rs"
-
-[[bin]]
-name = "senbei"
-path = "src/main.rs"
-
-[dependencies]
+[workspace.dependencies]
 anyhow = "1"
+indicatif = "0.18"
+libc = "0.2"
+owo-colors = "4"
+tempfile = "3"
 thiserror = "2"
 walkdir = "2"
-indicatif = "0.18"
-owo-colors = "4"
-
-[target.'cfg(windows)'.dependencies]
 windows = { version = "0.62", features = [
     "Win32_Foundation",
     "Win32_System_Console",
     "Win32_System_SystemInformation",
 ] }
-
-[target.'cfg(all(not(windows), not(target_arch = "wasm32")))'.dependencies]
-libc = "0.2"
-
-[dev-dependencies]
-tempfile = "3"
+senbei-crypto = { path = "senbei-crypto" }
+senbei-io = { path = "senbei-io" }
+senbei-metadata = { path = "senbei-metadata" }
+senbei-pe = { path = "senbei-pe" }
 
 [profile.release]
 opt-level = 3