docs: Add missing doc comments to public utility APIs

[matta]

This PR adds proper Rust documentation comments matching the RFC 1574 API Guidelines to three missing public API items in crates/pebble/src:

1. models::TaskNode::create_new_to_disk: Explains behavior and describes precise failure conditions in an # Errors section.
2. models::default_datetime: Explains its use as a fallback and provides a fully self-contained # Examples doctest.
3. task_io::current_task_time: Details how it centralizes timestamp generation and includes an # Examples doctest.

These doctests compile successfully and strict Clippy and rustdoc warnings have been checked.

---

PR created automatically by Jules for task 11655097965189350106 started by @matta

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.

[trunk-io]

Merging to main in this repository is managed by Trunk.

• To merge this pull request, check the box to the left or comment /trunk merge below.

[gemini-code-assist]

Summary of Changes

Hello, 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 enhances the clarity and maintainability of the pebble crate by adding essential Rust documentation comments to three public utility APIs. The changes align with RFC 1574 API Guidelines, ensuring that these functions are well-explained, their error conditions are clear, and practical usage examples are provided through doctests. This improves the developer experience and code understanding for anyone interacting with these core utilities.

Highlights

• models::TaskNode::create_new_to_disk documentation: Added comprehensive documentation, including behavior explanation and precise failure conditions in an # Errors section.
• models::default_datetime documentation: Provided documentation explaining its use as a fallback and included a self-contained # Examples doctest.
• task_io::current_task_time documentation: Detailed how it centralizes timestamp generation and added an # Examples doctest.

Changelog

• crates/pebble/src/models.rs
  • Added documentation comments to the create_new_to_disk method, detailing its behavior and error conditions.
  • Added documentation comments and an example doctest to the default_datetime function.
• crates/pebble/src/task_io.rs
  • Added documentation comments and an example doctest to the current_task_time function.

Activity

• PR created automatically by Jules for task 11655097965189350106, started by @matta.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for GitHub and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request successfully adds comprehensive documentation comments to three public utility APIs: TaskNode::create_new_to_disk, default_datetime, and current_task_time. The new documentation clearly explains the purpose of each function, details error conditions where applicable, and includes self-contained # Examples doctests. This significantly improves the clarity and maintainability of these APIs, aligning with good Rust documentation practices and RFC 1574 API Guidelines. The changes are well-implemented and contribute positively to the codebase.