chore(core): update activate_skill prompt verbiage to be more direct

[NTaylorMullen]

Summary

Updated the system prompt verbiage for specialized skills to be more direct. Changed "you can call the" to "call the" in the skill activation instructions.

Details

• Modified packages/core/src/prompts/snippets.ts to update the renderAgentSkills function.
• Added a new test case in packages/core/src/core/prompts.test.ts to verify the updated verbiage for preview models.
• Updated vitest snapshots to reflect the changes.
• Legacy snippets (snippets.legacy.ts) were intentionally left unchanged to avoid modifying legacy prompting behavior.

Related Issues

N/A

How to Validate

Run the following command to verify the system prompt tests:

npm test -w @google/gemini-cli-core -- src/core/prompts.test.ts

Pre-Merge Checklist

• Updated relevant documentation and README (if needed)
• Added/updated tests (if needed)
• Noted breaking changes (if any)
• Validated on required platforms/methods:
  • MacOS
    • npm run
    • npx
    • Docker
    • Podman
    • Seatbelt

[gemini-code-assist]

Summary of Changes

Hello @NTaylorMullen, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the interaction model for the Gemini CLI agent by making the instructions for activating specialized skills more concise and direct. The change aims to improve clarity and efficiency in how users are guided to utilize agent capabilities, ensuring a smoother and more intuitive experience. The updated prompt behavior is validated through new and existing test infrastructure.

Highlights

• Prompt Verbiage Update: The system prompt verbiage for activating specialized skills has been made more direct by changing 'you can call the' to 'call the'.
• New Test Case: A new test case was added to packages/core/src/core/prompts.test.ts to specifically verify the updated skill activation verbiage for preview models.
• Snapshot Updates: Vitest snapshots in packages/core/src/core/__snapshots__/prompts.test.ts.snap were updated to reflect the changes in the system prompt.
• Legacy Snippets Unchanged: Legacy snippets (snippets.legacy.ts) were intentionally left unmodified to preserve existing prompting behavior for older models.

Changelog

• packages/core/src/core/snapshots/prompts.test.ts.snap
  • Updated the snapshot to include the new system prompt content, reflecting the more direct verbiage for skill activation and other detailed mandates for preview models.
• packages/core/src/core/prompts.test.ts
  • Added a new it block to test that the getCoreSystemPrompt function correctly includes the updated skill activation verbiage when preview models are active.
• packages/core/src/prompts/snippets.ts
  • Modified the renderAgentSkills function to change the phrase 'you can call the' to 'call the' within the skill activation instructions, making the prompt more direct.

Activity

• No human activity (comments, reviews, or progress updates) has been recorded on this pull request yet.

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[gemini-code-assist]

Code Review

This pull request updates the system prompt verbiage for specialized skills to be more direct, changing 'you can call the' to 'call the'. The change is well-implemented, with a new test case and snapshot to verify the updated verbiage for preview models. The distinction between legacy and preview model prompts is handled correctly. The changes are clear and improve the prompt's directness. I have no issues to report.

[github-actions]

Size Change: -10 B (0%)

Total Size: 23.9 MB

ℹ️ View Unchanged

Filename	Size	Change
./bundle/gemini.js	23.9 MB	-10 B (0%)
./bundle/sandbox-macos-permissive-closed.sb	1.03 kB	0 B
./bundle/sandbox-macos-permissive-open.sb	890 B	0 B
./bundle/sandbox-macos-permissive-proxied.sb	1.31 kB	0 B
./bundle/sandbox-macos-restrictive-closed.sb	3.29 kB	0 B
./bundle/sandbox-macos-restrictive-open.sb	3.36 kB	0 B
./bundle/sandbox-macos-restrictive-proxied.sb	3.56 kB	0 B

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