Fix: read instances with null projection for provider-version robustness

On-device smoke test (tasks.org, which bundles an older OpenTasks provider)
hit SQLITE_ERROR 'no such column: is_recurring' — that column and
distance_from_current don't exist in every provider version. Query all
columns (projection=null) and let the by-name mapper read what's present
(absent -> null); the repository re-sorts, so no provider sort column is
needed either. Verified live: reads the real tasks.org/DAVx5 provider
(1 list, 0 open tasks) with zero errors.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src/main/java/de/jeanlucmakiola/floret/data/tasks/AndroidTasksDataSource.kt

@@ -71,7 +71,12 @@ class AndroidTasksDataSource @Inject constructor(
 
     private fun queryInstances(selection: String?, args: Array<String>?): List<Task> {
         val uri = TasksContract.instancesUri(authority())
-        return resolver.query(uri, TaskProjections.INSTANCES, selection, args, Instances.INSTANCE_DUE_SORTING)
+        // projection = null (all columns): the instances view differs across
+        // provider versions (e.g. tasks.org's bundled OpenTasks has no
+        // `is_recurring` / `distance_from_current`). The by-name mapper reads
+        // whatever is present and nulls the rest; the repository re-sorts, so we
+        // don't depend on a provider sort column either.
+        return resolver.query(uri, null, selection, args, null)
             ?.use { c ->
                 val reader = CursorColumnReader(c)
                 buildList { while (c.moveToNext()) add(TaskMapper.task(reader)) }