fix: address 54 MEDIUM/LOW priority PR review issues

Comprehensive fixes across Python code, shell scripts, and documentation
addressing all remaining MEDIUM and LOW priority review comments.

Python Code Fixes (27 fixes):
- tools/info.py: Simplified dispatch with lookup tables, defensive guards,
  CPU fallback formatting, !s conversion flags, module-level sync assertion
- tools/docker.py: Case-insensitive container ID regex, keyword-only confirm,
  module-level ALL_ACTIONS constant
- tools/virtualization.py: Normalized single-VM dict responses, unified
  list/details queries
- core/client.py: Fixed HTTP client singleton race condition, compound key
  substring matching for sensitive data redaction
- subscriptions/: Extracted SSL context creation to shared helper in utils.py,
  replaced deprecated ssl._create_unverified_context API
- tools/array.py: Renamed parity_history to parity_status, hoisted ALL_ACTIONS
- tools/storage.py: Fixed dict(None) risks, temperature 0 falsiness bug
- tools/notifications.py, keys.py, rclone.py: Fixed dict(None) TypeError risks
- tests/: Fixed generator type annotations, added coverage for compound keys

Shell Script Fixes (13 fixes):
- dashboard.sh: Dynamic server discovery, conditional debug output, null-safe
  jq, notification count guard order, removed unused variables
- unraid-query.sh: Proper JSON escaping via jq, --ignore-errors and --insecure
  CLI flags, TLS verification now on by default
- validate-marketplace.sh: Removed unused YELLOW variable, defensive jq,
  simplified repository URL output

Documentation Fixes (24+ fixes):
- Version consistency: Updated all references to v0.2.0 across pyproject.toml,
  plugin.json, marketplace.json, MARKETPLACE.md, __init__.py, README files
- Tool count updates: Changed all "26 tools" references to "10 tools, 90 actions"
- Markdown lint: Fixed MD022, MD031, MD047 issues across multiple files
- Research docs: Fixed auth headers, removed web artifacts, corrected stale info
- Skills docs: Fixed query examples, endpoint counts, env var references

All 227 tests pass, ruff and ty checks clean.

unraid_mcp/config/settings.py

@@ -10,6 +10,7 @@ from typing import Any
 
 from dotenv import load_dotenv
 
+
 # Get the script directory (config module location)
 SCRIPT_DIR = Path(__file__).parent  # /home/user/code/unraid-mcp/unraid_mcp/config/
 UNRAID_MCP_DIR = SCRIPT_DIR.parent  # /home/user/code/unraid-mcp/unraid_mcp/
@@ -18,10 +19,10 @@ PROJECT_ROOT = UNRAID_MCP_DIR.parent  # /home/user/code/unraid-mcp/
 # Load environment variables from .env file
 # In container: First try /app/.env.local (mounted), then project root .env
 dotenv_paths = [
-    Path('/app/.env.local'),  # Container mount point
-    PROJECT_ROOT / '.env.local',  # Project root .env.local
-    PROJECT_ROOT / '.env',  # Project root .env
-    UNRAID_MCP_DIR / '.env'  # Local .env in unraid_mcp/
+    Path("/app/.env.local"),  # Container mount point
+    PROJECT_ROOT / ".env.local",  # Project root .env.local
+    PROJECT_ROOT / ".env",  # Project root .env
+    UNRAID_MCP_DIR / ".env"  # Local .env in unraid_mcp/
 ]
 
 for dotenv_path in dotenv_paths:
@@ -51,7 +52,7 @@ else:  # Path to CA bundle
     UNRAID_VERIFY_SSL = raw_verify_ssl
 
 # Logging Configuration
-LOG_LEVEL_STR = os.getenv('UNRAID_MCP_LOG_LEVEL', 'INFO').upper()
+LOG_LEVEL_STR = os.getenv("UNRAID_MCP_LOG_LEVEL", "INFO").upper()
 LOG_FILE_NAME = os.getenv("UNRAID_MCP_LOG_FILE", "unraid-mcp.log")
 LOGS_DIR = Path("/tmp")
 LOG_FILE_PATH = LOGS_DIR / LOG_FILE_NAME
@@ -61,8 +62,8 @@ LOGS_DIR.mkdir(parents=True, exist_ok=True)
 
 # HTTP Client Configuration
 TIMEOUT_CONFIG = {
-    'default': 30,
-    'disk_operations': 90,  # Longer timeout for SMART data queries
+    "default": 30,
+    "disk_operations": 90,  # Longer timeout for SMART data queries
 }
 
 
@@ -94,15 +95,15 @@ def get_config_summary() -> dict[str, Any]:
     is_valid, missing = validate_required_config()
 
     return {
-        'api_url_configured': bool(UNRAID_API_URL),
-        'api_url_preview': UNRAID_API_URL[:20] + '...' if UNRAID_API_URL else None,
-        'api_key_configured': bool(UNRAID_API_KEY),
-        'server_host': UNRAID_MCP_HOST,
-        'server_port': UNRAID_MCP_PORT,
-        'transport': UNRAID_MCP_TRANSPORT,
-        'ssl_verify': UNRAID_VERIFY_SSL,
-        'log_level': LOG_LEVEL_STR,
-        'log_file': str(LOG_FILE_PATH),
-        'config_valid': is_valid,
-        'missing_config': missing if not is_valid else None
+        "api_url_configured": bool(UNRAID_API_URL),
+        "api_url_preview": UNRAID_API_URL[:20] + "..." if UNRAID_API_URL else None,
+        "api_key_configured": bool(UNRAID_API_KEY),
+        "server_host": UNRAID_MCP_HOST,
+        "server_port": UNRAID_MCP_PORT,
+        "transport": UNRAID_MCP_TRANSPORT,
+        "ssl_verify": UNRAID_VERIFY_SSL,
+        "log_level": LOG_LEVEL_STR,
+        "log_file": str(LOG_FILE_PATH),
+        "config_valid": is_valid,
+        "missing_config": missing if not is_valid else None
     }