revert: remove skill command (needs redesign)

[jonathanpopham]

Reverts #119. The skill prompt only covered three-file format and didn't account for single .graph files. Needs a redesign before shipping — the prompt needs to cover both formats and we need to decide the right delivery mechanism (skill command, CLAUDE.md injection, hook, etc).

Summary by CodeRabbit

• Chores
  • Removed the skill subcommand from the CLI.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b24c797b-b296-4798-9f41-363ff199be2d

📥 Commits

Reviewing files that changed from the base of the PR and between 67c495a and d0936c9.

📒 Files selected for processing (1)

• cmd/skill.go

💤 Files with no reviewable changes (1)

• cmd/skill.go

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Walkthrough

This PR removes the skill subcommand from the CLI tool. Specifically, it deletes the entire cmd/skill.go file that contained the command definition, its help text (called skillPrompt), and the registration logic that made it available when running the CLI.

Changes

Cohort / File(s)	Summary
Skill subcommand removal cmd/skill.go	Deleted the skill Cobra subcommand implementation, including the skillPrompt text and init() function that registered it with rootCmd.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• feat: add supermodel skill command for agent awareness prompt #119: Adds the same cmd/skill.go Cobra skill subcommand with skillPrompt and init registration—the inverse operation of this PR.

Suggested reviewers

• greynewell

Poem

✨ A skill once lived in the CLI,
With prompts so wise and guidance nigh,
But now it bids the code goodbye—
Clean deletions make us sigh. 🧹

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The description is incomplete—it lacks the required Test plan section with checkboxes for make test, make lint, and manual testing verification.	Add the Test plan section with checkboxes confirming make test passes, make lint passes, and describe any manual testing performed.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: reverting the skill command removal with the reason that it needs redesign.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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