Fix environment variable naming inconsistencies in docs

The README.md and .env.example files had inconsistent naming for SSL-related
environment variables. The actual code uses:
- REDIS_SSL_CA_PATH (not REDIS_CA_PATH)
- REDIS_SSL_CERT_REQS (not REDIS_CERT_REQS)
- REDIS_SSL_CA_CERTS (not REDIS_CA_CERTS)

This commit updates the documentation to match the actual variable names
used in src/common/config.py.

Author: taylorleese

.env.example

@@ -4,9 +4,9 @@ REDIS_DB=0
 REDIS_USERNAME=default
 REDIS_PWD=your_password
 REDIS_SSL=False
-REDIS_CA_PATH=/path/to/ca.pem
+REDIS_SSL_CA_PATH=/path/to/ca.pem
 REDIS_SSL_KEYFILE=/path/to/key.pem
 REDIS_SSL_CERTFILE=/path/to/cert.pem
-REDIS_CERT_REQS=required
-REDIS_CA_CERTS=/path/to/ca_certs.pem
+REDIS_SSL_CERT_REQS=required
+REDIS_SSL_CA_CERTS=/path/to/ca_certs.pem
 REDIS_CLUSTER_MODE=False

README.md

@@ -195,7 +195,7 @@ The following example is for Claude Desktop, but the same applies to any other M
                 "REDIS_PORT": "<your_redis_database_port>",
                 "REDIS_PWD": "<your_redis_database_password>",
                 "REDIS_SSL": True|False,
-                "REDIS_CA_PATH": "<your_redis_ca_path>",
+                "REDIS_SSL_CA_PATH": "<your_redis_ca_path>",
                 "REDIS_CLUSTER_MODE": True|False
             }
         }
@@ -308,11 +308,11 @@ If desired, you can use environment variables. Defaults are provided for all var
 | `REDIS_USERNAME`     | Default database username                                 | `"default"`   |
 | `REDIS_PWD`          | Default database password                                 | ""            |
 | `REDIS_SSL`          | Enables or disables SSL/TLS                               | `False`       |
-| `REDIS_CA_PATH`      | CA certificate for verifying server                       | None          |
+| `REDIS_SSL_CA_PATH`  | CA certificate for verifying server                       | None          |
 | `REDIS_SSL_KEYFILE`  | Client's private key file for client authentication       | None          |
 | `REDIS_SSL_CERTFILE` | Client's certificate file for client authentication       | None          |
-| `REDIS_CERT_REQS`    | Whether the client should verify the server's certificate | `"required"`  |
-| `REDIS_CA_CERTS`     | Path to the trusted CA certificates file                  | None          |
+| `REDIS_SSL_CERT_REQS`| Whether the client should verify the server's certificate | `"required"`  |
+| `REDIS_SSL_CA_CERTS` | Path to the trusted CA certificates file                  | None          |
 | `REDIS_CLUSTER_MODE` | Enable Redis Cluster mode                                 | `False`       |