fix(backend): Update store agent view to return only latest version (#11065)

This PR fixes duplicate agent listings on the marketplace home page by
updating the StoreAgent view to return only the latest approved version
of each agent.

### Changes 🏗️

- Updated `StoreAgent` database view to filter for only the latest
approved version per listing
- Added CTE (Common Table Expression) `latest_versions` to efficiently
determine the maximum version for each store listing
- Modified the join logic to only include the latest version instead of
all approved versions
- Updated `versions` array field to contain only the single latest
version

**Technical details:**
- The view now uses a `latest_versions` CTE that groups by
`storeListingId` and finds `MAX(version)` for approved submissions
- Join condition ensures only the latest version is included:
`slv.version = lv.latest_version`
- This prevents duplicate entries for agents with multiple approved
versions

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] Verified marketplace home page shows no duplicate agents
- [x] Confirmed only latest version is displayed for agents with
multiple approved versions
  - [x] Checked that agent details page still functions correctly
  - [x] Validated that run counts and ratings are still accurate

#### For configuration changes:

- [x] `.env.default` is updated or already compatible with my changes
- [x] `docker-compose.yml` is updated or already compatible with my
changes
- [x] I have included a list of my configuration changes in the PR
description (under **Changes**)

autogpt_platform/backend/migrations/20251003085016_update_store_agent_view_latest_version_only/migration.sql

@@ -0,0 +1,62 @@
+BEGIN;
+
+-- Drop and recreate the StoreAgent view with isAvailable field
+DROP VIEW IF EXISTS "StoreAgent";
+
+CREATE OR REPLACE VIEW "StoreAgent" AS
+WITH latest_versions AS (
+    SELECT 
+        "storeListingId",
+        MAX(version) AS max_version
+    FROM "StoreListingVersion"
+    WHERE "submissionStatus" = 'APPROVED'
+    GROUP BY "storeListingId"
+),
+agent_versions AS (
+    SELECT 
+        "storeListingId",
+        array_agg(DISTINCT version::text ORDER BY version::text) AS versions
+    FROM "StoreListingVersion"
+    WHERE "submissionStatus" = 'APPROVED'
+    GROUP BY "storeListingId"
+)
+SELECT
+    sl.id AS listing_id,
+    slv.id AS "storeListingVersionId",
+    slv."createdAt" AS updated_at,
+    sl.slug,
+    COALESCE(slv.name, '') AS agent_name,
+    slv."videoUrl" AS agent_video,
+    COALESCE(slv."imageUrls", ARRAY[]::text[]) AS agent_image,
+    slv."isFeatured" AS featured,
+    p.username AS creator_username,  -- Allow NULL for malformed sub-agents
+    p."avatarUrl" AS creator_avatar,  -- Allow NULL for malformed sub-agents
+    slv."subHeading" AS sub_heading,
+    slv.description,
+    slv.categories,
+    COALESCE(ar.run_count, 0::bigint) AS runs,
+    COALESCE(rs.avg_rating, 0.0)::double precision AS rating,
+    COALESCE(av.versions, ARRAY[slv.version::text]) AS versions,
+    slv."isAvailable" AS is_available  -- Add isAvailable field to filter sub-agents
+FROM "StoreListing" sl
+JOIN latest_versions lv 
+    ON sl.id = lv."storeListingId"
+JOIN "StoreListingVersion" slv 
+    ON slv."storeListingId" = lv."storeListingId"
+   AND slv.version = lv.max_version
+   AND slv."submissionStatus" = 'APPROVED'
+JOIN "AgentGraph" a 
+    ON slv."agentGraphId" = a.id 
+    AND slv."agentGraphVersion" = a.version
+LEFT JOIN "Profile" p 
+    ON sl."owningUserId" = p."userId"
+LEFT JOIN "mv_review_stats" rs 
+    ON sl.id = rs."storeListingId"
+LEFT JOIN "mv_agent_run_counts" ar 
+    ON a.id = ar."agentGraphId"
+LEFT JOIN agent_versions av 
+    ON sl.id = av."storeListingId"
+WHERE sl."isDeleted" = false
+  AND sl."hasApprovedVersion" = true;
+
+COMMIT;