fix(calendar): persist settings on PUT/POST

Accept calendar.settings (e.g. week_patterns) in validate_update
and convert_field; apply on create like tags. Unblocks Front#42
pattern save which previously got 200 with empty settings.

src/handlers/handler_calendar_by_id.erl

@@ -85,6 +85,7 @@ calendar_schema() ->
       type           => #{type => string, enum => [<<"personal">>, <<"commercial">>]},
       confirmation   => #{type => string, enum => [<<"auto">>, <<"manual">>]},
       tags           => #{type => array, items => #{type => string}},
+      settings       => #{type => object},
       rating_avg     => #{type => number, format => float},
       rating_count   => #{type => integer},
       status         => #{type => string},
@@ -102,7 +103,12 @@ calendar_update_schema() ->
       description  => #{type => string},
       type         => #{type => string},
       confirmation => #{type => string},
-      tags         => #{type => array, items => #{type => string}}
+      tags         => #{type => array, items => #{type => string}},
+      short_name   => #{type => string},
+      category     => #{type => string},
+      color        => #{type => string},
+      image_url    => #{type => string},
+      settings     => #{type => object, nullable => true}
     }
   }.
 
@@ -195,4 +201,9 @@ convert_field({<<"confirmation">>, #{<<"timeout">> := N}}) when is_integer(N), N
   {confirmation, {timeout, N}};
 convert_field({<<"confirmation">>, Val}) -> {confirmation, Val};
 convert_field({<<"tags">>, Val})         -> {tags, Val};
+convert_field({<<"short_name">>, Val})   -> {short_name, Val};
+convert_field({<<"category">>, Val})     -> {category, Val};
+convert_field({<<"color">>, Val})        -> {color, Val};
+convert_field({<<"image_url">>, Val})    -> {image_url, Val};
+convert_field({<<"settings">>, Val}) when is_map(Val) -> {settings, Val};
 convert_field(Other)                     -> Other.