chore(git-cliff): fix empty contributors section and improve tag filtering

Author: sudo-kraken

.github/cliff.toml

@@ -40,17 +40,19 @@ body = """
     {%- endfor -%}
 {%- endfor -%}
 
-{# New contributors - properly deduped #}
-{%- if github.contributors | filter(attribute="is_first_time", value=true) %}
-    {%- set_global seen_contributors = [] %}
+{%- set valid_contributors = [] -%}
+{%- for c in github.contributors | filter(attribute="is_first_time", value=true) %}
+  {%- if c.username and c.username not in excluded_users and c.username not in valid_contributors %}
+    {%- set_global valid_contributors = valid_contributors | concat(with=c.username) %}
+  {%- endif %}
+{%- endfor %}
+
+{%- if valid_contributors | length > 0 %}
 ## New Contributors ❤️
-    {%- for contributor in github.contributors | filter(attribute="is_first_time", value=true) %}
-        {%- if contributor.username and contributor.username not in excluded_users and contributor.username not in seen_contributors %}
-            {%- set_global seen_contributors = seen_contributors | concat(with=contributor.username) %}
-* @{{ contributor.username }} made their first contribution{%- if contributor.pr_number %} in [#{{ contributor.pr_number }}]({{ self::remote_url() }}/pull/{{ contributor.pr_number }}){%- endif %}
-        {%- endif %}
-    {%- endfor %}
-{%- endif -%}
+  {%- for username in valid_contributors %}
+* @{{ username }} made their first contribution
+  {%- endfor %}
+{%- endif %}
 """
 footer = """
 <!-- generated by git-cliff -->
@@ -87,8 +89,7 @@ commit_parsers = [
   { message = '.*\[ci skip\].*', skip = true },
 ]
 protect_breaking_commits = false
-tag_pattern = "v?[0-9].[0-9].[0-9]*"
-skip_tags = "beta|alpha"
-ignore_tags = "rc"
+tag_pattern = "v?[0-9]+\\.[0-9]+\\.[0-9]+.*"
+skip_tags = "beta|alpha|rc"
 topo_order = false
 sort_commits = "newest"