docs: Update taskmaster.mdc and dev_workflow.mdc with missing CLI flags and enhanced workflow guidance

- Add missing --tag flags to commands that were implemented but not documented
- Add missing --file flags to tag management commands
- Add --bedrock flag to models command documentation
- Synchronize CLI documentation with actual implementation in commands.js
- Enhance dev_workflow.mdc with comprehensive tagged task lists guidance
- Add patterns for when to introduce tags (git branching, team collaboration, experiments)
- Consolidate and refine changesets for upcoming release

.changeset/tiny-ads-decide.md

@@ -5,3 +5,4 @@
 Adds support for filtering tasks by multiple statuses at once using comma-separated statuses.
 
 Example: `cancelled,deferred`
+