feat: add funding metadata support and increase QR code caption max-width

bump version to 2.3.0

Change-Id: Ic58f2788d4412ffd6cde6bfc7835d57e04ae5945
diff --git a/DESCRIPTION b/DESCRIPTION
index 91e5c42..be926e9 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: posterdown.ids
 Title: Generate IDS CD compliant PDF Conference Posters Using R Markdown
-Version: 2.2.0
+Version: 2.3.0
 Authors@R: 
     c(person(given = "Marc",
              family = "Kupietz",
diff --git a/NEWS.md b/NEWS.md
index 65d0cbd..4bd8804 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,13 @@
+# posterdown.ids 2.3.0 (2026-08-06)
+
+## New features
+
+* Added `funding` YAML metadata support (`funding.logo`, `funding.text`, `funding.project`) for displaying funding agency logos, descriptions, and project identifiers in the poster margin.
+
+## Improvements and fixes
+
+* Increased QR code caption maximum width from 7.5cm to 12cm to prevent URL wrapping.
+
 # posterdown.ids 2.2.0 (2026-08-05)
 
 ## New features
diff --git a/README.md b/README.md
index c90aa3b..dc4a9d2 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,10 @@
 second_logo:
   url: https://raw.githubusercontent.com/brentthorne/posterdown/master/images/betterhexlogo.png
   margin-left: 14.5cm
+funding:
+  logo: dfg-logo.svg
+  text: Deutsche Forschungsgemeinschaft (DFG)
+  project: "Project number: 531750631"
 ```
 
 To switch to German language, add the following to the YAML options:
diff --git a/inst/rmarkdown/templates/posterdown_ids/resources/template.html b/inst/rmarkdown/templates/posterdown_ids/resources/template.html
index e7728b0..df51d74 100644
--- a/inst/rmarkdown/templates/posterdown_ids/resources/template.html
+++ b/inst/rmarkdown/templates/posterdown_ids/resources/template.html
@@ -327,6 +327,30 @@
   word-wrap: break-word;
 }
 
+#info-column .funding-container {
+  margin-top: 1.2em;
+  margin-bottom: 1.5em;
+  max-width: 12cm;
+}
+
+#info-column .funding-logo {
+  max-width: 8cm;
+  height: auto;
+  margin-top: 0.4em;
+  margin-bottom: 0.4em;
+  display: block;
+}
+
+#info-column .funding-text,
+#info-column .funding-project {
+  display: block;
+  font-family: "Fira Sans Condensed", "Fira Sans Condensed Light", sans-serif;
+  font-size: 14pt;
+  line-height: 1.25;
+  color: #444444;
+  word-wrap: break-word;
+}
+
 @media print {
 #info-column {
   /* Physical unit, NOT vh: in headless Chrome vh resolves against the browser
@@ -810,6 +834,22 @@
 <br/>
 © $if(year)$$year$$else$2026$endif$ IDS Mannheim/$if(lang.de)$ÖA$else$PR$endif$<br/>
 <br/>
+
+$if(funding)$
+<div class="funding-container">
+<b>$if(lang.de)$Gefördert durch$else$Funding$endif$:</b><br/>
+$if(funding.logo)$
+<img class="funding-logo" src="$funding.logo$"/>
+$endif$
+$if(funding.text)$
+<span class="funding-text">$funding.text$</span>
+$endif$
+$if(funding.project)$
+<span class="funding-project">$funding.project$</span>
+$endif$
+</div>
+<br/>
+$endif$
 $if(lang.de)$
 <svg
    version="1.1"