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/sayistay_mcp_module/__init__.py

@@ -0,0 +1,56 @@
+# sayistay_mcp_module/__init__.py
+
+"""
+Sayıştay (Turkish Court of Accounts) MCP Module
+
+This module provides access to three types of Sayıştay decisions:
+- Genel Kurul (General Assembly) decisions
+- Temyiz Kurulu (Appeals Board) decisions  
+- Daire (Chamber) decisions
+
+The module handles ASP.NET WebForms authentication with CSRF tokens
+and DataTables-based pagination for comprehensive decision search.
+"""
+
+from .client import SayistayApiClient
+from .models import (
+    # Genel Kurul models
+    GenelKurulSearchRequest,
+    GenelKurulSearchResponse,
+    GenelKurulDecision,
+    
+    # Temyiz Kurulu models
+    TemyizKuruluSearchRequest, 
+    TemyizKuruluSearchResponse,
+    TemyizKuruluDecision,
+    
+    # Daire models
+    DaireSearchRequest,
+    DaireSearchResponse,
+    DaireDecision,
+    
+    # Document models
+    SayistayDocumentMarkdown
+)
+from .enums import (
+    DaireEnum,
+    KamuIdaresiTuruEnum,
+    WebKararKonusuEnum
+)
+
+__all__ = [
+    "SayistayApiClient",
+    "GenelKurulSearchRequest",
+    "GenelKurulSearchResponse", 
+    "GenelKurulDecision",
+    "TemyizKuruluSearchRequest",
+    "TemyizKuruluSearchResponse",
+    "TemyizKuruluDecision",
+    "DaireSearchRequest",
+    "DaireSearchResponse",
+    "DaireDecision",
+    "SayistayDocumentMarkdown",
+    "DaireEnum",
+    "KamuIdaresiTuruEnum",
+    "WebKararKonusuEnum"
+]