clients: expand Go, Python, Rust client APIs

- Add TOTP enrollment/confirmation/removal to all clients
- Add password change and admin set-password endpoints
- Add account listing, status update, and tag management
- Add audit log listing with filter support
- Add policy rule CRUD operations
- Expand test coverage for all new endpoints across clients
- Fix .gitignore to exclude built binaries

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

clients/python/mcias_client/__init__.py

@@ -7,9 +7,10 @@ from ._errors import (
     MciasForbiddenError,
     MciasInputError,
     MciasNotFoundError,
+    MciasRateLimitError,
     MciasServerError,
 )
-from ._models import Account, PGCreds, PublicKey, TokenClaims
+from ._models import Account, PGCreds, PolicyRule, PublicKey, RuleBody, TokenClaims
 
 __all__ = [
     "Client",
@@ -19,9 +20,12 @@ __all__ = [
     "MciasNotFoundError",
     "MciasInputError",
     "MciasConflictError",
+    "MciasRateLimitError",
     "MciasServerError",
     "Account",
     "PublicKey",
     "TokenClaims",
     "PGCreds",
+    "PolicyRule",
+    "RuleBody",
 ]