feat: add --notes/-n option for task descriptions

[chrismdp]

Summary

The Reclaim.ai API supports task notes/descriptions via the notes field in the SDK, but the CLI didn't expose this functionality. This PR adds support for notes across the relevant commands.

Changes

• Add --notes/-n option to create-task command
• Add --notes/-n option to edit-task command
• Display notes in show-task output when present

Example usage

# Create task with description
reclaim create "My task" -n "This is a detailed description of the task"

# Edit an existing task's notes
reclaim edit abc123 -n "Updated description"

# Show task displays notes at bottom
reclaim show abc123

Output example

Task 76g6l: Test task with notes
   Status:          N2 (new)           Priority:     P2     
   ...

Notes:
This is a test description

Test plan

• Tested reclaim create with -n flag - notes saved correctly
• Tested reclaim edit with -n flag - notes updated correctly
• Tested reclaim show displays notes when present
• Verified help text shows new options

🤖 Generated with Claude Code

[rieck]

Awesome. Thanks a lot!