refactor: query_plan -> query_plans (#82)

Author: levkk

docs/enterprise_edition/plans.md

@@ -16,13 +16,13 @@ Query plan collection is disabled by default and can be enabled in `pgdog.toml`:
     ```toml
     [query_stats]
     enabled = true
-    query_plan_threshold = 100 # Queries slower than 100ms will be planned.
+    query_plans_threshold = 100 # Queries slower than 100ms will be planned.
     ```
 === "Helm chart"
     ```yaml
     queryStats:
       enabled: true
-      queryPlanThreshold: 100
+      queryPlansThreshold: 100
     ```
 
 The plans are stored in memory and deduplicated by _normalized_ SQL of the query. This means that queries with different parameters will be tied to the same query plan, making sure PgDog doesn't plan the same query multiple times.
@@ -33,30 +33,30 @@ The query plan cache is configurable:
 
 | Argument | Description | Example |
 |-|-|-|
-| `query_plan_threshold` | Minimum query runtime that triggers a query plan (in ms). | `100` |
+| `query_plans_threshold` | Minimum query runtime that triggers a query plan (in ms). | `100` |
 | `query_plans_sample_rate` | Percentage of all queries executed through PgDog that will be planned, irrespective of their runtime (between 0.0 and 1.0). | `0.5` |
 | `query_plans_cache` | Maximum number of entries in the in-memory plan cache. | `500` |
-| `query_plan_max_age` | Query plans older than this are considered stale and will be replanned if the query is executed again (in ms). | `15_000` |
+| `query_plans_max_age` | Query plans older than this are considered stale and will be replanned if the query is executed again (in ms). | `15_000` |
 
 ##### Example
 
 === "pgdog.toml"
     ```toml
     [query_stats]
     enabled = true
-    query_plan_threshold = 100
+    query_plans_threshold = 100
     query_plans_sample_rate = 0.5
     query_plans_cache = 1_000
-    query_plan_max_age = 15_000
+    query_plans_max_age = 15_000
     ```
 === "Helm chart"
     ```yaml
     queryStats:
       enabled: true
-      queryPlanThreshold: 100
+      queryPlansThreshold: 100
       queryPlansSampleRate: 0.5
       queryPlansCache: 1000
-      queryPlanMaxAge: 15000
+      queryPlansMaxAge: 15000
     ```
 
 ### Admin database

docs/examples/control_plane/docker-compose.yaml

@@ -1,5 +1,5 @@
 x-pgdog: &pgdog
-  image: ghcr.io/pgdogdev/pgdog-enterprise:v2026-05-28
+  image: ghcr.io/pgdogdev/pgdog-enterprise:v2026-06-15
   command: ["pgdog", "--config", "/etc/pgdog/pgdog.toml", "--users", "/etc/secrets/pgdog/users.toml"]
   mem_limit: 1g
   environment:
@@ -32,7 +32,7 @@ services:
     image: redis:7
 
   control:
-    image: ghcr.io/pgdogdev/pgdog-enterprise/control:v2026-05-28
+    image: ghcr.io/pgdogdev/pgdog-enterprise/control:v2026-06-15
     ports:
       - "8099:8080"
     environment:

main.py

@@ -10,7 +10,7 @@
 # Latest released tag for the Enterprise Docker images. Update this in one
 # place; reference it in docs with {{ enterprise_tag }}. Can be overridden at
 # build time with the ENTERPRISE_TAG environment variable.
-ENTERPRISE_TAG = os.environ.get("ENTERPRISE_TAG", "v2026-06-12")
+ENTERPRISE_TAG = os.environ.get("ENTERPRISE_TAG", "v2026-06-15")
 
 
 def define_env(env):