feat(core): brahman-card-wit — extractor opcional de contratos WIT

Crate nuevo crates/core/brahman-card-wit que parsea texto WIT con
wit-parser y devuelve un Vec<WitInterface> (de brahman-card),
listo para acoplarse a una ResolvedCard::from_conscious(card, wit).

Ámbito intencional: sólo parsing texto, no toca wasm-tools ni
wit-component. Es opt-in: brahman-card no depende de éste.

API pública:
- parse_wit(source: &str) -> Result<Vec<WitInterface>, WitError>
- parse_wit_file(path: impl AsRef<Path>) -> Result<...>

Cada WitInterface incluye: package, world, imports, exports.
Las interfaces importadas/exportadas (no sólo funciones) se
resuelven por nombre via resolve.interfaces[id].name; las
funciones inline aparecen como WorldKey::Name directo.

Example CLI: brahman-wit-info <ruta.wit> imprime los worlds.

  $ brahman-wit-info shared_wit/protocol.wit
  2 world(s):
    package: brahman:protocol@0.1.0
    world:   module
    imports: types, handshake, lifecycle
    exports: run
    ...

Tests: 4/4 (inline + archivo real + parse error + world vacío).
Workspace: 0 errores.

CHANGELOG.md actualizado con la entrada nueva y la del commit
anterior (7b589b8) que faltaba.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Cargo.lock

@@ -1176,6 +1176,16 @@ dependencies = [
  "ulid",
 ]
 
+[[package]]
+name = "brahman-card-wit"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "brahman-card",
+ "thiserror 2.0.18",
+ "wit-parser 0.230.0",
+]
+
 [[package]]
 name = "brahman-handshake"
 version = "0.1.0"
@@ -10277,6 +10287,17 @@ dependencies = [
  "indexmap 2.14.0",
 ]
 
+[[package]]
+name = "wasmparser"
+version = "0.230.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "808198a69b5a0535583370a51d459baa14261dfab04800c4864ee9e1a14346ed"
+dependencies = [
+ "bitflags 2.11.1",
+ "indexmap 2.14.0",
+ "semver",
+]
+
 [[package]]
 name = "wasmparser"
 version = "0.244.0"
@@ -11123,7 +11144,7 @@ checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
 dependencies = [
  "anyhow",
  "heck 0.5.0",
- "wit-parser",
+ "wit-parser 0.244.0",
 ]
 
 [[package]]
@@ -11173,7 +11194,25 @@ dependencies = [
  "wasm-encoder 0.244.0",
  "wasm-metadata",
  "wasmparser 0.244.0",
- "wit-parser",
+ "wit-parser 0.244.0",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.230.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "679fde5556495f98079a8e6b9ef8c887f731addaffa3d48194075c1dd5cd611b"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap 2.14.0",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser 0.230.0",
 ]
 
 [[package]]