Don't crash on an impossible date in a resource filename

lib/perron/resource/publishable.rb

@@ -54,7 +54,15 @@ def date_from_filename
         return @date_from_filename if defined?(@date_from_filename)
 
         match = File.basename(file_path).match(DATE_REGEX)
-        @date_from_filename = match ? Date.new(match[:year].to_i, match[:month].to_i, match[:day].to_i).in_time_zone : nil
+
+        @date_from_filename =
+          if match
+            begin
+              Date.new(match[:year].to_i, match[:month].to_i, match[:day].to_i).in_time_zone
+            rescue Date::Error
+              nil
+            end
+          end
       end
     end
   end

test/perron/resource/resource_publishable_test.rb

@@ -1,4 +1,5 @@
 require "test_helper"
+require "tmpdir"
 
 class Perron::Site::Resource::PublishableTest < ActiveSupport::TestCase
   include ActiveSupport::Testing::TimeHelpers
@@ -74,4 +75,15 @@ class Perron::Site::Resource::PublishableTest < ActiveSupport::TestCase
 
     refute public_feature.draft?
   end
+
+  test "#publication_date ignores a structurally valid but impossible date in the filename" do
+    Dir.mktmpdir do |dir|
+      path = File.join(dir, "2024-99-99-typo.md")
+      File.write(path, "---\ntitle: Typo\n---\nBody")
+      resource = Content::Post.new(path)
+
+      assert_nil resource.publication_date
+      assert resource.published?
+    end
+  end
 end