chore: add December 19, 2025 release notes and update catalog to dcp56 (#2871)

* Initial plan

* Add December 19, 2025 release notes and update catalog to dcp56

Co-authored-by: NoopDog <3239697+NoopDog@users.noreply.github.com>

* Use Markdown links instead of HTML anchor tags in release notes

Co-authored-by: NoopDog <3239697+NoopDog@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NoopDog <3239697+NoopDog@users.noreply.github.com>

Author: Copilot

docs/dcp-updates.mdx

@@ -7,6 +7,19 @@ title: HCA Data Portal Updates
 
 # HCA Data Portal Platform Updates
 
+## December 19, 2025
+
+### New projects (4):
+
+1. [A multi-omics atlas of the human retina at single-cell resolution](https://data.humancellatlas.org/explore/projects/9c20a245-f2c0-43ae-82c9-2232ec6b594f)
+1. [Asian Immune Diversity Atlas (AIDA): Asian diversity in human immune cells (Thailand cells)](https://data.humancellatlas.org/explore/projects/76bc0e97-8cae-43d4-a647-477a13be47f9)
+1. [Single cell atlas of the human retina](https://data.humancellatlas.org/explore/projects/4bcc16b5-7a47-45bb-b9c0-be9d5336df2d)
+1. [Single-cell multiomics of the human retina reveals hierarchical transcription factor collaboration in mediating cell type-specific effects of genetic variants on gene regulation](https://data.humancellatlas.org/explore/projects/2079bb2e-676e-4bbf-8c68-f9c6459edcbb)
+
+### Updated Projects (1):
+
+1. [Spatial transcriptomic profiling of human retinoblastoma](https://data.humancellatlas.org/explore/projects/1662accf-0e0c-48c4-9314-5aba063f2220)
+
 ## November 21, 2025
 
 ### New projects (2):

site-config/data-portal/dev/config.ts

@@ -23,7 +23,7 @@ import {
 import { SELECTED_MATCH } from "@databiosphere/findable-ui/lib/components/Layout/components/Header/common/entities";
 
 const APP_TITLE = "HCA Data Portal";
-const CATALOG = "dcp55";
+const CATALOG = "dcp56";
 export const DATA_URL = "https://service.azul.data.humancellatlas.org";
 const EXPLORER_URL = "https://explore.data.humancellatlas.dev.clevercanary.com";
 export const GIT_HUB_REPO_URL = "https://github.com/DataBiosphere/data-portal";