chore: release prime v0.5.1

[JannikSt]

Summary

Release prime version 0.5.1 with the following changes since v0.5.0:

Features

• --context flag: Add temporary config profile switching for commands (feat: add --context flag for temporary config profile switching #235)
• -- separator support: Sandbox run command now supports argument separation (feat(sandbox): -- separator support for run command #232)
• --owner flag: Added to collaborator push command, plus show username in whoami (Add --owner flag for collaborator push and show username in whoami #233)

Fixes

• Ctrl+C handling: Handle user abort gracefully instead of showing traceback (fix: handle user abort (Ctrl+C) gracefully #234)

Other

• Fix MCP gif reference in docs (Fix: MCP gif reference. #231)
• Add prime env eval E2E tests (test: add prime env eval E2E tests #224)
• Fix uv build output directory in release workflows

Packages

• prime: 0.5.0 → 0.5.1

Test plan

• Verify prime --context <profile> <command> works correctly
• Verify prime sandbox run <id> -- <command> works
• Verify prime whoami shows username
• Verify Ctrl+C exits cleanly without traceback

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Note

Bump prime_cli package version from 0.5.0 to 0.5.1.

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