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.

web/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "senbei-web"
-version = "1.0.1"
+version = "1.1.0"
 edition = "2024"
 description = "WebAssembly browser frontend for senbei"
 license = "AGPL-3.0-only"
@@ -9,7 +9,9 @@ license = "AGPL-3.0-only"
 crate-type = ["cdylib"]
 
 [dependencies]
-senbei = { path = ".." }
+senbei-io = { path = "../senbei-io" }
+senbei-metadata = { path = "../senbei-metadata" }
+senbei-pe = { path = "../senbei-pe" }
 wasm-bindgen = "0.2"
 console_error_panic_hook = "0.1"