Logging is now controlled via an environment variable MCP_REDIS_LOG_LEVEL

Use MCP_REDIS_LOG_LEVEL to set verbosity
Accepted: DEBUG, INFO, WARNING, ERROR, CRITICAL, NOTSET
Aliases: WARN → WARNING, FATAL → CRITICAL
Numeric values allowed (e.g., 10, +20)
Default (unset/unrecognized): WARNING

Handler behavior

• If handlers already exist (uv/VS Code/pytest), we don’t add any. We only lower too‑strict handler levels so user's chosen level passes; we never raise them.

• If no handlers exist, we add one stderr StreamHandler with a simple format.

Behavior changes

Default is quiet (WARNING+). Set MCP_REDIS_LOG_LEVEL to INFO/DEBUG to see more.
Host-provided handlers are respected; we don’t add duplicates.

Before (noisy stderr tags)

[warning] [server stderr] ... INFO Starting the Redis MCP Server
[warning] [server stderr] ... INFO Processing request of type
[warning] [server stderr]             ListToolsRequest

After (default: WARNING)

[info] Connection state: Starting
[info] Connection state: Running

Testing

Unit tests added for logging_utils. Full suite passing. Total coverage: 87.67%