feat: Claude Code slash commands for Task Master (#774)

* Fix Cursor deeplink installation with copy-paste instructions (#723)

* fix: expand-task (#755)

* docs: Update o3 model price (#751)

* docs: Auto-update and format models.md

* docs: Auto-update and format models.md

* feat: Add Claude Code task master commands

Adds Task Master slash commands for Claude Code under /project:tm/ namespace

---------

Co-authored-by: Joe Danziger <joe@ticc.net>
Co-authored-by: Ralph Khreish <35776126+Crunchyman-ralph@users.noreply.github.com>
Co-authored-by: Volodymyr Zahorniak <7808206+zahorniak@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: neno-is-ooo <204701868+neno-is-ooo@users.noreply.github.com>

.claude/commands/tm/set-status/to-done.md

@@ -0,0 +1,44 @@
+Mark a task as completed.
+
+Arguments: $ARGUMENTS (task ID)
+
+## Completing a Task
+
+This command validates task completion and updates project state intelligently.
+
+## Pre-Completion Checks
+
+1. Verify test strategy was followed
+2. Check if all subtasks are complete
+3. Validate acceptance criteria met
+4. Ensure code is committed
+
+## Execution
+
+```bash
+task-master set-status --id=$ARGUMENTS --status=done
+```
+
+## Post-Completion Actions
+
+1. **Update Dependencies**
+   - Identify newly unblocked tasks
+   - Update sprint progress
+   - Recalculate project timeline
+
+2. **Documentation**
+   - Generate completion summary
+   - Update CLAUDE.md with learnings
+   - Log implementation approach
+
+3. **Next Steps**
+   - Show newly available tasks
+   - Suggest logical next task
+   - Update velocity metrics
+
+## Celebration & Learning
+
+- Show impact of completion
+- Display unblocked work
+- Recognize achievement
+- Capture lessons learned