fix: task master (tm) custom slash commands w/ proper syntax (#968)

* feat: add task master (tm) custom slash commands

Add comprehensive task management system integration via custom slash commands.
Includes commands for:
- Project initialization and setup
- Task parsing from PRD documents
- Task creation, update, and removal
- Subtask management
- Dependency tracking and validation
- Complexity analysis and task expansion
- Project status and reporting
- Workflow automation

This provides a complete task management workflow directly within Claude Code.

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

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

* chore: add changeset

---------

Co-authored-by: neno-is-ooo <204701868+neno-is-ooo@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>

.claude/commands/tm/remove-subtask/remove-subtask.md

@@ -0,0 +1,84 @@
+Remove a subtask from its parent task.
+
+Arguments: $ARGUMENTS
+
+Parse subtask ID to remove, with option to convert to standalone task.
+
+## Removing Subtasks
+
+Remove a subtask and optionally convert it back to a standalone task.
+
+## Argument Parsing
+
+- "remove subtask 5.1"
+- "delete 5.1"
+- "convert 5.1 to task" → remove and convert
+- "5.1 standalone" → convert to standalone
+
+## Execution Options
+
+### 1. Delete Subtask
+```bash
+task-master remove-subtask --id=<parentId.subtaskId>
+```
+
+### 2. Convert to Standalone
+```bash
+task-master remove-subtask --id=<parentId.subtaskId> --convert
+```
+
+## Pre-Removal Checks
+
+1. **Validate Subtask**
+   - Verify subtask exists
+   - Check completion status
+   - Review dependencies
+
+2. **Impact Analysis**
+   - Other subtasks that depend on it
+   - Parent task implications
+   - Data that will be lost
+
+## Removal Process
+
+### For Deletion:
+1. Confirm if subtask has work done
+2. Update parent task estimates
+3. Remove subtask and its data
+4. Clean up dependencies
+
+### For Conversion:
+1. Assign new standalone task ID
+2. Preserve all task data
+3. Update dependency references
+4. Maintain task history
+
+## Smart Features
+
+- Warn if subtask is in-progress
+- Show impact on parent task
+- Preserve important data
+- Update related estimates
+
+## Example Flows
+
+```
+/project:tm/remove-subtask 5.1
+→ Warning: Subtask #5.1 is in-progress
+→ This will delete all subtask data
+→ Parent task #5 will be updated
+Confirm deletion? (y/n)
+
+/project:tm/remove-subtask 5.1 convert
+→ Converting subtask #5.1 to standalone task #89
+→ Preserved: All task data and history
+→ Updated: 2 dependency references
+→ New task #89 is now independent
+```
+
+## Post-Removal
+
+- Update parent task status
+- Recalculate estimates
+- Show updated hierarchy
+- Suggest next actions