Replace status_id with in_progress boolean field

- Remove task_statuses lookup table and StatusID foreign key
- Add InProgress boolean field to Task model
- Add database migration (005_replace_status_with_in_progress)
- Update all handlers, services, and repositories
- Update admin frontend to display in_progress as checkbox/boolean
- Remove Task Statuses tab from admin lookups page
- Update tests to use InProgress instead of StatusID
- Task categorization now uses InProgress for kanban column assignment

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

migrations/005_replace_status_with_in_progress.down.sql

@@ -0,0 +1,45 @@
+-- Rollback: Restore status_id foreign key from in_progress boolean
+
+-- Step 1: Recreate the task_taskstatus table
+CREATE TABLE IF NOT EXISTS task_taskstatus (
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    deleted_at TIMESTAMPTZ,
+    name VARCHAR(20) NOT NULL,
+    description TEXT,
+    color VARCHAR(7),
+    display_order INTEGER NOT NULL DEFAULT 0
+);
+
+-- Step 2: Seed the status lookup data
+INSERT INTO task_taskstatus (name, description, color, display_order) VALUES
+    ('Pending', 'Task is waiting to be started', '#808080', 1),
+    ('In Progress', 'Task is currently being worked on', '#3498db', 2),
+    ('Completed', 'Task has been finished', '#27ae60', 3),
+    ('On Hold', 'Task is temporarily paused', '#f39c12', 4),
+    ('Cancelled', 'Task has been cancelled', '#e74c3c', 5)
+ON CONFLICT DO NOTHING;
+
+-- Step 3: Add status_id column back
+ALTER TABLE task_task ADD COLUMN IF NOT EXISTS status_id INTEGER;
+
+-- Step 4: Migrate data - set status_id based on in_progress flag
+-- Set to "In Progress" status if in_progress is true, otherwise "Pending"
+UPDATE task_task
+SET status_id = (
+    CASE
+        WHEN in_progress = true THEN (SELECT id FROM task_taskstatus WHERE name = 'In Progress' LIMIT 1)
+        ELSE (SELECT id FROM task_taskstatus WHERE name = 'Pending' LIMIT 1)
+    END
+);
+
+-- Step 5: Add foreign key constraint
+ALTER TABLE task_task ADD CONSTRAINT fk_task_task_status
+    FOREIGN KEY (status_id) REFERENCES task_taskstatus(id);
+
+-- Step 6: Drop the in_progress column
+ALTER TABLE task_task DROP COLUMN IF EXISTS in_progress;
+
+-- Step 7: Drop the index
+DROP INDEX IF EXISTS idx_task_task_in_progress;