feat(task-hierarchy): implement recursive task estimation and reset functionality

- Added SQL scripts to fix task hierarchy and reset parent task estimations to zero, ensuring accurate estimation calculations.
- Introduced a migration for a recursive task estimation function that aggregates estimations from subtasks, enhancing task management.
- Updated controllers to utilize recursive estimations for displaying task data, improving accuracy in task progress representation.
- Implemented a new API route to reset parent task estimations, allowing for better task management and data integrity.

worklenz-backend/fix-task-hierarchy.sql

@@ -0,0 +1,77 @@
+-- Fix task hierarchy and reset parent estimations
+-- This script ensures proper parent-child relationships and resets parent estimations
+
+-- First, let's see the current task hierarchy
+SELECT 
+    t.id,
+    t.name,
+    t.parent_task_id,
+    t.total_minutes,
+    (SELECT name FROM tasks WHERE id = t.parent_task_id) as parent_name,
+    (SELECT COUNT(*) FROM tasks WHERE parent_task_id = t.id AND archived = false) as actual_subtask_count,
+    t.archived
+FROM tasks t
+WHERE (t.name LIKE '%sub%' OR t.name LIKE '%test task%')
+ORDER BY t.name, t.created_at;
+
+-- Reset all parent task estimations to 0
+-- This ensures parent tasks don't have their own estimation when they have subtasks
+UPDATE tasks 
+SET total_minutes = 0
+WHERE id IN (
+    SELECT DISTINCT parent_task_id 
+    FROM tasks 
+    WHERE parent_task_id IS NOT NULL 
+    AND archived = false
+)
+AND archived = false;
+
+-- Verify the results after the update
+SELECT 
+    t.id,
+    t.name,
+    t.parent_task_id,
+    t.total_minutes as current_estimation,
+    (SELECT name FROM tasks WHERE id = t.parent_task_id) as parent_name,
+    (SELECT COUNT(*) FROM tasks WHERE parent_task_id = t.id AND archived = false) as subtask_count,
+    get_task_recursive_estimation(t.id) as recursive_estimation
+FROM tasks t
+WHERE (t.name LIKE '%sub%' OR t.name LIKE '%test task%')
+AND t.archived = false
+ORDER BY t.name;
+
+-- Show the hierarchy in tree format
+WITH RECURSIVE task_hierarchy AS (
+    -- Top level tasks (no parent)
+    SELECT 
+        id,
+        name,
+        parent_task_id,
+        total_minutes,
+        0 as level,
+        name as path
+    FROM tasks
+    WHERE parent_task_id IS NULL
+    AND (name LIKE '%sub%' OR name LIKE '%test task%')
+    AND archived = false
+    
+    UNION ALL
+    
+    -- Child tasks
+    SELECT 
+        t.id,
+        t.name,
+        t.parent_task_id,
+        t.total_minutes,
+        th.level + 1,
+        th.path || ' > ' || t.name
+    FROM tasks t
+    INNER JOIN task_hierarchy th ON t.parent_task_id = th.id
+    WHERE t.archived = false
+)
+SELECT 
+    REPEAT('  ', level) || name as indented_name,
+    total_minutes,
+    get_task_recursive_estimation(id) as recursive_estimation
+FROM task_hierarchy
+ORDER BY path;