feat(cli): add IBM Bob runtime support

[BrUn3y]

•## What

Add IBM Bob Shell support to HyperFrames' coding-agent integrations.
https://bob.ibm.com

Why

HyperFrames supports several coding agents, but IBM Bob was not detected as an agent runtime or documented as a supported skills target.

How

• Detect Bob through the BOBSHELL_CLI environment variable.
• Prioritize Bob over inherited Codex or Claude environment markers.
• Avoid using BOBSHELL_API_KEY to prevent false-positive detection.
• Verify skill mirroring to ~/.bob/skills.
• Document IBM Bob setup and support.

Test plan

• Added unit tests for detection, precedence, false positives, and skill mirroring.

• Tested skill discovery and runtime detection with IBM Bob Shell 1.0.6.

• Ran the CLI test suite: 2,922 tests passed.

• Ran build, type checking, linting, formatting, and documentation link validation.

• Unit tests added/updated

• Manual testing performed

• Documentation updated (if applicable)

[miguel-heygen]

@BrUn3y thanks for contributing! would you want to add IBM here? https://github.com/heygen-com/hyperframes/blob/main/ADOPTERS.md

[BrUn3y]

@miguel-heygen not for now, but I will let you know later, thanks for the invitation

[jrusso1020]

@BrUn3y you will need to sign your commit before it can merge

[BrUn3y]

@jrusso1020 done!