Explorer updates (#4583)

## What are you changing in this pull request and why?

Add pages for new dbt Explorer features:
- Model performance
- Project recommendations

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
so my content adheres to these guidelines.
- [x] For [docs
versioning](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#about-versioning),
review how to [version a whole
page](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
and [version a block of
content](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#versioning-blocks-of-content).

Adding new pages (delete if not applicable):
- [x] Add page to `website/sidebars.js`
- [x] Provide a unique filename for the new page

website/docs/docs/collaborate/explore-projects.md

@@ -2,7 +2,7 @@
 title: "Explore your dbt projects"
 sidebar_label: "Explore dbt projects"
 description: "Learn about dbt Explorer and how to interact with it to understand, improve, and leverage your data pipelines."
-pagination_next: "docs/collaborate/explore-multiple-projects"
+pagination_next: "docs/collaborate/model-performance"
 pagination_prev: null
 ---
 

website/docs/docs/collaborate/model-performance.md

@@ -0,0 +1,41 @@
+---
+title: "Model performance"
+sidebar_label: "Model performance"
+description: "Learn about ."
+---
+
+dbt Explorer provides metadata on dbt Cloud runs for in-depth model performance and quality analysis. This feature assists in reducing infrastructure costs and saving time for data teams by highlighting where to fine-tune projects and deployments — such as model refactoring or job configuration adjustments.
+
+<LoomVideo id='98f33b3b7a374df0b7c04747eae6ef44' />
+
+:::tip Public preview 
+
+The model performance feature is now available in dbt Explorer! Check it out! 
+:::
+
+## The Performance overview page 
+
+You can pinpoint areas for performance enhancement by using the Performance overview page. This page presents a comprehensive analysis across all project models and displays the longest-running models, those most frequently executed, and the ones with the highest failure rates during runs/tests. Data can be segmented by environment and job type which can offer insights into:
+
+- Most executed models (total count).
+- Models with the longest execution time (average duration).
+- Models with the most failures, detailing run failures (percentage and count) and test failures (percentage and count).
+
+Each data point links to individual models in Explorer. 
+
+<Lightbox src="/img/docs/collaborate/dbt-explorer/example-performance-overview-page.png" width="80%" title="Example of Performance overview page"/>
+
+You can view historical metadata for up to the past three months. Select the time horizon using the filter, which defaults to a two-week lookback.
+
+<Lightbox src="/img/docs/collaborate/dbt-explorer/ex-2-week-default.png" title="Example of dropdown"/>
+
+## The Model performance tab
+
+You can view trends in execution times, counts, and failures by using the Model performance tab for historical performance analysis. Daily execution data includes:
+
+- Average model execution time.
+- Model execution counts, including failures/errors (total sum).
+
+Clicking on a data point reveals a table listing all job runs for that day, with each row providing a direct link to the details of a specific run.
+
+<Lightbox src="/img/docs/collaborate/dbt-explorer/example-model-performance-tab.png" title="Example of the Model performance tab"/>

website/docs/docs/collaborate/project-recommendations.md

@@ -0,0 +1,50 @@
+---
+title: "Project recommendations"
+sidebar_label: "Project recommendations"
+description: "dbt Explorer provides recommendations that you can take to improve the quality of your dbt project."
+---
+
+:::tip Public preview 
+
+The project recommendations feature is now available in dbt Explorer! Check it out!
+
+:::
+
+dbt Explorer provides recommendations about your project from the `dbt_project_evaluator` [package](https://hub.getdbt.com/dbt-labs/dbt_project_evaluator/latest/) using metadata from the Discovery API.
+
+Explorer also offers a global view, showing all the recommendations across the project for easy sorting and summarizing. 
+
+These recommendations provide insight into how you can build a more well documented, well tested, and well built project, leading to less confusion and more trust.
+
+The Recommendations overview page includes two top-level metrics measuring the test and documentation coverage of the models in your project. 
+
+- **Model test coverage** — The percent of models in your project (models not from a package or imported via dbt Mesh) with at least one dbt test configured on them.
+- **Model documentation coverage** — The percent of models in your project (models not from a package or imported via dbt Mesh) with a description.
+
+<Lightbox src="/img/docs/collaborate/dbt-explorer/example-recommendations-overview.png" width="80%" title="Example of the Recommendations overview page with project metrics and the recommendations for all resources in the project"/>
+
+## List of rules
+
+| Category | Name | Description | Package Docs Link |
+| --- | --- | --- | --- |
+| Modeling | Direct Join to Source | Model that joins both a model and source, indicating a missing staging model | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/modeling/#direct-join-to-source) |
+| Modeling | Duplicate Sources | More than one source node corresponds to the same data warehouse relation | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/modeling/#duplicate-sources) |
+| Modeling | Multiple Sources Joined  | Models with more than one source parent, indicating lack of staging models | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/modeling/#multiple-sources-joined) |
+| Modeling | Root Model | Models with no parents, indicating potential hardcoded references and need for sources  | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/modeling/#root-models) |
+| Modeling | Source Fanout | Sources with more than one model child, indicating a need for staging models | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/modeling/#source-fanout) |
+| Modeling | Unused Source | Sources that are not referenced by any resource | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/modeling/#unused-sources) |
+| Performance | Exposure Dependent on View | Exposures with at least one model parent materialized as a view, indicating potential query performance issues | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/performance/#exposure-parents-materializations) |
+| Testing | Missing Primary Key Test | Models with insufficient testing on the grain of the model.  | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/testing/#missing-primary-key-tests) |
+| Documentation | Undocumented Models | Models without a model-level description | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/documentation/#undocumented-models) |
+| Documentation | Undocumented Source | Sources (collections of source tables) without descriptions | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/documentation/#undocumented-sources) |
+| Documentation | Undocumented Source Tables | Source tables without descriptions | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/documentation/#undocumented-source-tables) |
+| Governance | Public Model Missing Contract | Models with public access that do not have a model contract to ensure the data types | [GitHub](https://dbt-labs.github.io/dbt-project-evaluator/0.8/rules/governance/#public-models-without-contracts) |
+
+
+## The Recommendations tab
+
+Models, sources and exposures each also have a Recommendations tab on their resource details page, with the specific recommendations that correspond to that resource:
+
+<Lightbox src="/img/docs/collaborate/dbt-explorer/example-recommendations-tab.png" width="80%" title="Example of the Recommendations tab "/>
+
+

website/sidebars.js

@@ -424,6 +424,8 @@ const sidebarSettings = {
           link: { type: "doc", id: "docs/collaborate/explore-projects" },
           items: [
             "docs/collaborate/explore-projects",
+            "docs/collaborate/model-performance",
+            "docs/collaborate/project-recommendations",
             "docs/collaborate/explore-multiple-projects",
           ],
         },