fix(bootstrap): simple enum codegen, crypto parser compatibility, import ordering

- Fix bootstrap sema to type simple enum variants as the enum itself
  (not _Tag), and .tag access returns the enum type.
- Fix hir_lower to lower simple enum .tag as no-op and Enum{tag:X}
  init as X directly.
- Fix sema collectGlobals to register imports AFTER real declarations,
  preventing duplicate-symbol errors when stdlib files import symbols
  defined in later files (e.g. jwt.bux importing rsa.bux).
- Rewrite lib/crypto/*.bux as single-line to work around bootstrap
  parser limitations with multi-line function calls.
- Rename 'pub' -> 'pubBuf' in ed25519.bux and jwt-pitbul/Main.bux
  to avoid reserved keyword collision.
- Remove algTag:int workaround from jwt-pitbul/Main.bux; enum
  comparisons now type-check without manual casts.
- Update .gitignore to exclude _test_*/ and backup files.
- Delete accidentally-committed _test_array/ directory.

lib/crypto/ecdsa.bux

@@ -6,30 +6,26 @@ module Std::Crypto::Ecdsa {
 import Std::Mem::{Alloc, Free};
 import Std::String::{String_Len};
 
-extern func bux_ecdsa_sign_p256(pemKey: String, keylen: int, data: String, datalen: int, siglen: *int) -> String;
-extern func bux_ecdsa_sign_p384(pemKey: String, keylen: int, data: String, datalen: int, siglen: *int) -> String;
-extern func bux_ecdsa_verify_p256(pemKey: String, keylen: int, data: String, datalen: int, sig: String, siglen: int) -> int;
-extern func bux_ecdsa_verify_p384(pemKey: String, keylen: int, data: String, datalen: int, sig: String, siglen: int) -> int;
+// Extern declarations for the runtime C implementations
+extern func bux_ecdsa_sign_p256(key: String, keylen: int, data: String, datalen: int, outlen: *int) -> String;
+extern func bux_ecdsa_verify_p256(key: String, keylen: int, data: String, datalen: int, sig: String, siglen: int) -> int;
+extern func bux_ecdsa_sign_p384(key: String, keylen: int, data: String, datalen: int, outlen: *int) -> String;
+extern func bux_ecdsa_verify_p384(key: String, keylen: int, data: String, datalen: int, sig: String, siglen: int) -> int;
 extern func bux_base64_encode(data: String, len: int) -> String;
 extern func bux_base64_decode(data: String, len: int, outlen: *int) -> String;
 
-// --- ECDSA P-256 (ES256) ---
-
 func Ecdsa_SignP256(pemPrivateKey: String, data: String) -> String {
     let siglen: int = 0;
-    return bux_ecdsa_sign_p256(pemPrivateKey, String_Len(pemPrivateKey) as int,
-                               data, String_Len(data) as int, &siglen);
+    return bux_ecdsa_sign_p256(pemPrivateKey, String_Len(pemPrivateKey) as int, data, String_Len(data) as int, &siglen);
 }
 
 func Ecdsa_SignP256Base64(pemPrivateKey: String, data: String) -> String {
-    let sig: String = Ecdsa_SignP256(pemPrivateKey, data);
-    return bux_base64_encode(sig, String_Len(sig) as int);
+    let raw: String = Ecdsa_SignP256(pemPrivateKey, data);
+    return bux_base64_encode(raw, String_Len(raw) as int);
 }
 
 func Ecdsa_VerifyP256(pemPublicKey: String, data: String, signature: String) -> bool {
-    let r: int = bux_ecdsa_verify_p256(pemPublicKey, String_Len(pemPublicKey) as int,
-                                        data, String_Len(data) as int,
-                                        signature, String_Len(signature) as int);
+    let r: int = bux_ecdsa_verify_p256(pemPublicKey, String_Len(pemPublicKey) as int, data, String_Len(data) as int, signature, String_Len(signature) as int);
     return r == 1;
 }
 
@@ -39,23 +35,18 @@ func Ecdsa_VerifyP256Base64(pemPublicKey: String, data: String, signatureB64: St
     return Ecdsa_VerifyP256(pemPublicKey, data, sig);
 }
 
-// --- ECDSA P-384 (ES384) ---
-
 func Ecdsa_SignP384(pemPrivateKey: String, data: String) -> String {
     let siglen: int = 0;
-    return bux_ecdsa_sign_p384(pemPrivateKey, String_Len(pemPrivateKey) as int,
-                               data, String_Len(data) as int, &siglen);
+    return bux_ecdsa_sign_p384(pemPrivateKey, String_Len(pemPrivateKey) as int, data, String_Len(data) as int, &siglen);
 }
 
 func Ecdsa_SignP384Base64(pemPrivateKey: String, data: String) -> String {
-    let sig: String = Ecdsa_SignP384(pemPrivateKey, data);
-    return bux_base64_encode(sig, String_Len(sig) as int);
+    let raw: String = Ecdsa_SignP384(pemPrivateKey, data);
+    return bux_base64_encode(raw, String_Len(raw) as int);
 }
 
 func Ecdsa_VerifyP384(pemPublicKey: String, data: String, signature: String) -> bool {
-    let r: int = bux_ecdsa_verify_p384(pemPublicKey, String_Len(pemPublicKey) as int,
-                                        data, String_Len(data) as int,
-                                        signature, String_Len(signature) as int);
+    let r: int = bux_ecdsa_verify_p384(pemPublicKey, String_Len(pemPublicKey) as int, data, String_Len(data) as int, signature, String_Len(signature) as int);
     return r == 1;
 }