fix: address 18 CRITICAL+HIGH PR review comments

**Critical Fixes (7 issues):**
- Fix GraphQL schema field names in users tool (role→roles, remove email)
- Fix GraphQL mutation signatures (addUserInput, deleteUser input)
- Fix dict(None) TypeError guards in users tool (use `or {}` pattern)
- Fix FastAPI version constraint (0.116.1→0.115.0)
- Fix WebSocket SSL context handling (support CA bundles, bool, and None)
- Fix critical disk threshold treated as warning (split counters)

**High Priority Fixes (11 issues):**
- Fix Docker update/remove action response field mapping
- Fix path traversal vulnerability in log validation (normalize paths)
- Fix deleteApiKeys validation (check response before success)
- Fix rclone create_remote validation (check response)
- Fix keys input_data type annotation (dict[str, Any])
- Fix VM domain/domains fallback restoration

**Changes by file:**
- unraid_mcp/tools/docker.py: Response field mapping
- unraid_mcp/tools/info.py: Split critical/warning counters
- unraid_mcp/tools/storage.py: Path normalization for traversal protection
- unraid_mcp/tools/users.py: GraphQL schema + null handling
- unraid_mcp/tools/keys.py: Validation + type annotations
- unraid_mcp/tools/rclone.py: Response validation
- unraid_mcp/tools/virtualization.py: Domain fallback
- unraid_mcp/subscriptions/manager.py: SSL context creation
- pyproject.toml: FastAPI version fix
- tests/*: New tests for all fixes

**Review threads resolved:**
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PRRT_kwDOO6Hdxs5uu70e, PRRT_kwDOO6Hdxs5uu70i, PRRT_kwDOO6Hdxs5uu7zn,
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PRRT_kwDOO6Hdxs5uu7Tv, PRRT_kwDOO6Hdxs5uu7Tw, PRRT_kwDOO6Hdxs5uu7Tx

All tests passing.

Co-authored-by: docker-fixer <agent@pr-fixes>
Co-authored-by: info-fixer <agent@pr-fixes>
Co-authored-by: storage-fixer <agent@pr-fixes>
Co-authored-by: users-fixer <agent@pr-fixes>
Co-authored-by: config-fixer <agent@pr-fixes>
Co-authored-by: websocket-fixer <agent@pr-fixes>
Co-authored-by: keys-rclone-fixer <agent@pr-fixes>
Co-authored-by: vm-fixer <agent@pr-fixes>

unraid_mcp/subscriptions/manager.py

@@ -8,6 +8,7 @@ error handling, reconnection logic, and authentication.
 import asyncio
 import json
 import os
+import ssl
 from datetime import datetime
 from typing import Any
 
@@ -153,6 +154,16 @@ class SubscriptionManager:
                 logger.debug(f"[WEBSOCKET:{subscription_name}] Connecting to: {ws_url}")
                 logger.debug(f"[WEBSOCKET:{subscription_name}] API Key present: {'Yes' if UNRAID_API_KEY else 'No'}")
 
+                # Build SSL context for wss:// connections
+                ssl_context = None
+                if ws_url.startswith('wss://'):
+                    if isinstance(UNRAID_VERIFY_SSL, str):
+                        ssl_context = ssl.create_default_context(cafile=UNRAID_VERIFY_SSL)
+                    elif UNRAID_VERIFY_SSL:
+                        ssl_context = ssl.create_default_context()
+                    else:
+                        ssl_context = ssl._create_unverified_context()
+
                 # Connection with timeout
                 connect_timeout = 10
                 logger.debug(f"[WEBSOCKET:{subscription_name}] Connection timeout: {connect_timeout}s")
@@ -163,7 +174,7 @@ class SubscriptionManager:
                     ping_interval=20,
                     ping_timeout=10,
                     close_timeout=10,
-                    ssl=UNRAID_VERIFY_SSL
+                    ssl=ssl_context
                 ) as websocket:
 
                     selected_proto = websocket.subprotocol or "none"