Initial commit: Elydora Open Source — self-hosted audit platform for AI agents

Full self-hosted port of the Elydora tamper-evident audit protocol:
- Hono API server with PostgreSQL, Redis, MinIO adapters
- Ed25519 signed operations, chain hashing, Merkle epoch rollups
- PBKDF2 password hashing, HMAC-SHA256 JWT, 5-role RBAC
- Next.js management console
- Node.js, Python, and Go SDKs
- Docker Compose for local deployment
- Helm chart for Kubernetes
- Comprehensive security hardening and audit fixes applied

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

sdks/python/elydora/errors.py

@@ -0,0 +1,30 @@
+"""Elydora SDK error types."""
+
+from __future__ import annotations
+
+from typing import Any, Dict, Optional
+
+
+class ElydoraError(Exception):
+    """Error returned by the Elydora API."""
+
+    def __init__(
+        self,
+        code: str,
+        message: str,
+        request_id: str = "",
+        details: Optional[Dict[str, Any]] = None,
+        status_code: int = 0,
+    ) -> None:
+        super().__init__(message)
+        self.code = code
+        self.message = message
+        self.request_id = request_id
+        self.details = details or {}
+        self.status_code = status_code
+
+    def __repr__(self) -> str:
+        return (
+            f"ElydoraError(code={self.code!r}, message={self.message!r}, "
+            f"request_id={self.request_id!r})"
+        )