Fix tools visibility - revert to v0.1.6 authentication approach

- Disable issuer validation in BearerAuthProvider (issuer=None)
- Simplify authentication condition (remove auth_enabled check)
- Revert CORS middleware to simple configuration
- Fix OAuth metadata endpoint to match v0.1.6
- Apply conditional auth only to MCP server creation

Critical fixes for Claude AI tools discovery

saidsurucu-yargi-mcp-f5fa007/bddk_mcp_module/__init__.py

@@ -0,0 +1,17 @@
+# bddk_mcp_module/__init__.py
+
+from .client import BddkApiClient
+from .models import (
+    BddkSearchRequest,
+    BddkDecisionSummary,
+    BddkSearchResult,
+    BddkDocumentMarkdown
+)
+
+__all__ = [
+    "BddkApiClient",
+    "BddkSearchRequest",
+    "BddkDecisionSummary",
+    "BddkSearchResult",
+    "BddkDocumentMarkdown"
+]