Configure agents directory and update documentation

Added agents directory path to plugin.json and updated README to document all three available agents (dba, developer, operator) with their descriptions and invocation instructions.

Author: Kevin Ngo

.claude-plugin/plugin.json

@@ -20,5 +20,6 @@
     "schema",
     "migration",
     "multi-region"
-  ]
+  ],
+  "agents": "./agents/"
 }

README.md

@@ -135,13 +135,15 @@ Requires [ccloud CLI](https://www.cockroachlabs.com/docs/cockroachcloud/ccloud-g
 
 Skills are sourced from the [`cockroachdb-skills`](https://github.com/cockroachlabs/cockroachdb-skills) submodule via symlink — a single source of truth shared across CockroachDB agent integrations.
 
-### Agent
+### Agents
 
-| Agent              | Description                                                                          |
-|--------------------|--------------------------------------------------------------------------------------|
-| `cockroachdb-dba`  | CockroachDB DBA expert — performance tuning, schema review, cluster diagnostics      |
+| Agent                    | Description                                                                          |
+|--------------------------|--------------------------------------------------------------------------------------|
+| `cockroachdb-dba`        | CockroachDB DBA expert — performance tuning, schema review, cluster diagnostics      |
+| `cockroachdb-developer`  | Application developer expert — ORM config, retry logic, transaction patterns         |
+| `cockroachdb-operator`   | Operator/SRE expert — cluster operations, monitoring, backups, scaling, incidents    |
 
-Invoke via `/cockroachdb:cockroachdb-dba` or let Claude invoke it automatically when the task involves database administration.
+Invoke via `/cockroachdb:<agent-name>` or let Claude invoke automatically based on the task context.
 
 ### Hooks