668.1-handle-consistency Make prompt pull accept same handle formats as prompt get

[codekiln]

Problem

langstar prompt pull and langstar prompt get accept different handle formats, causing confusion.

Current behavior:

# Works with prompt get
langstar prompt get my-prompt  # ✅ Success

# Fails with prompt pull
langstar prompt pull my-prompt  # ❌ Error: Invalid handle format. Expected: owner/repo-name

This is inconsistent and forces users to remember which command accepts which format.

Expected Behavior

Both commands should accept all three handle format types:

1. Short handle (private prompts): prompt-name → prepends -/
2. Full handle: owner/prompt-name
3. UUID: 8fc72dfc-6213-4048-b025-0156b1b735ff

Implementation Tasks

• Update prompt pull to use same handle parsing logic as prompt get
• Update prompt pull help text to document all accepted formats
• Add integration tests verifying all three formats work
• Update error messages to show accepted formats

Code Location

• File: cli/src/commands/prompt.rs
• Current implementation: prompt get already has the flexible parsing logic
• Target: Apply same logic to prompt pull

Testing

# All of these should work:
langstar prompt pull my-prompt                              # short handle
langstar prompt pull langchain-ai/rag-prompt                # full handle
langstar prompt pull 8fc72dfc-6213-4048-b025-0156b1b735ff  # UUID

# Verify help text documents all formats
langstar prompt pull --help

References

• Parent: ls-prompt-ux milestone - Improve UX consistency across prompt commands #668
• Related: 668.2-help-docs Fix --help documentation for all prompt commands #667 (help documentation)
• Good example: prompt get already implements flexible handle parsing

[codekiln]

Note: This issue is superseded by the new design in #679 (PR #724).

The handle consistency fix is now part of Phase 2: CRUD Commands (#728), which implements the get command with support for all handle formats.

This issue will remain open for reference but should not be worked on independently.