Summary

• Add inline task insertion between existing tasks in the pipeline board.
• Add task deletion with confirmation modal and automatic dependency cleanup

Changes

Backend (server/routes/taskmaster.js)

• POST /add-task: Added stage and insertAfterId parameters to control where new tasks are inserted (beginning of stage, after a specific task,
  or append)
• DELETE /delete-task/:projectName/:taskId: New endpoint to permanently remove a task, clean up dependency references, and reindex remaining tasks
• reindexTasks(): New utility that reassigns sequential IDs (1, 2, 3…) following global stage order and remaps dependency references

Frontend (src/components/ResearchLab.jsx)

• Insertion points rendered between task cards with an "Insert" button that expands into an inline form (title + description)
• "Add task at beginning" button per stage header
• Delete button on each task card (appears on hover via group-hover)
• Delete confirmation modal via ReactDOM.createPortal showing task ID/title and warning
• All interaction state (editing, adding, delete confirm) resets on project switch

API client (src/utils/api.js)

• Extended addTask() with stage and insertAfterId params
• Added deleteTask(projectName, taskId) method

Test plan

• Insert a new task between two existing tasks — verify it appears in the correct position with a sequential ID
• Insert a task at the beginning of a stage — verify ordering
• Delete a task — verify confirmation modal appears, task is removed, and remaining tasks are reindexed
• Delete a task that other tasks depend on — verify the dependency reference is cleaned up
• Switch projects while editing/inserting/deleting — verify all interaction state resets