fix(plugin): add explicit Agent tool warning against Bash CLI dispatch

[onlycastle]

Summary

• Skills (bp-analyze, bp-setup) now explicitly instruct the host to use the built-in Agent tool instead of shelling out to claude CLI for agent dispatch
• Added open browser command to the GitHub star prompt flow in bp-setup
• New test assertion verifying the anti-Bash dispatch contract language

Changes

• 9cbd1e1 fix(plugin): add explicit Agent tool warning against Bash CLI dispatch
• 1f26623 chore(plugin): rebuild dist artifacts

Test Plan

• Code compiles without errors (tsc --noEmit clean)
• All 8 plugin contract tests pass
• Manual verification: run /bp-setup and confirm Agent dispatch works

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Generated with Claude Code using /ship-it

[onlycastle]

Code Review

No issues found. All changes comply with project standards.

Reviewed:

• CLAUDE.md compliance (language policy, no fallback policy) ✓
• Shallow bug scan on diff ✓
• Git history context (no regressions) ✓
• Prior PR comment debt ✓
• Code comment compliance ✓

Generated with Claude Code

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