Switch site domain references from study.fourm.info to fourm.info

.github/copilot-instructions.md

@@ -10,7 +10,7 @@
 
 - **`src/Calculus.jl`**: Main module; uses `@reexport` to re-export `CalculusWithJuliaSquared` and `LaTeXStrings` — consumers get all exported names with a single `using Calculus`
 - **`test/`**: Tests using `Calculus` and `Test` only — re-exported names are available via `@reexport`, no explicit `using` needed in test files
-- **`docs/`**: Documenter.jl deploying to `https://study.fourm.info/calculus/` (cross-repo to `math_tech_study`)
+- **`docs/`**: Documenter.jl deploying to `https://fourm.info/calculus/` (cross-repo to `math_tech_study`)
 - **`notebooks/`**: Jupyter notebooks for exploration (not tested in CI)
 
 ### What CalculusWithJuliaSquared Provides

.github/instructions/docs.instructions.md

@@ -50,7 +50,7 @@ See `documenter-jl-conventions` skill for section anchor rules and examples.
 ## Documentation Structure
 
 - **Cross-Repository Deployment**: Deploys to math_tech_study repository
-- **Subdirectory Pattern**: Available at study.fourm.info/linear_algebra/
+- **Subdirectory Pattern**: Available at fourm.info/calculus/
 - **Auto-docs Integration**: Uses `@autodocs` for automatic function documentation
 - **Mathematical Notation**: Supports LaTeX rendering in documentation
 

.github/instructions/project.instructions.md

@@ -11,17 +11,18 @@ This is **one subrepository** in a multi-repository Julia math study project. Un
 
 ## The Math & Tech Study Hub
 
-The main website lives at **https://study.fourm.info** and is built with:
+The main website lives at **https://fourm.info** and is built with:
 - **Franklin.jl** (Lanyon template) in a separate GitHub repository: `FourMInfo/math_tech_study`
 - The main site handles the top-level domain, navigation, and study guides
 
 Current subrepositories and their deployed URLs:
 | Repository | Deployed URL |
 |---|---|
-| `FourMInfo/Linear_Algebra` | https://study.fourm.info/linear_algebra/ |
-| `FourMInfo/Math_Foundations` | https://study.fourm.info/math_foundations/ |
+| `FourMInfo/Linear_Algebra` | https://fourm.info/linear_algebra/ |
+| `FourMInfo/Math_Foundations` | https://fourm.info/math_foundations/ |
+| `FourMInfo/Calculus` (this repo) | https://fourm.info/calculus/ |
 
-Additional subrepositories (Calculus, etc.) will be added in the future following the same pattern.
+Additional subrepositories will be added in the future following the same pattern.
 
 ## How This Repository Deploys
 
@@ -34,7 +35,7 @@ Push to main
     → CI.yml runs deploy-docs job
     → docs/make.jl builds Documenter site
     → deploydocs() cross-deploys to FourMInfo/math_tech_study (gh-pages branch)
-    → Appears at study.fourm.info/calculus/
+    → Appears at fourm.info/calculus/
 ```
 
 Key facts about `docs/make.jl`:

.github/instructions/testing.instructions.md

@@ -99,7 +99,7 @@ end
 - **CI Compatibility**: Plotting tests with environment detection
 - **Comprehensive Coverage**: Test both happy path and edge cases
 - **Type Validation**: Verify return types match expectations
-- **Testing Structure**: Modular test files (`test_linear_algebra_basic.jl`, `test_linear_algebra_transform.jl`)
+- **Testing Structure**: Modular test files (`test_calculus_basics.jl`)
 
 ## Plotting in Tests
 
@@ -121,7 +121,7 @@ CI=true julia --project=. test/runtests.jl
 
 - **Tests**: Run on all PRs (`.github/workflows/CI.yml`)
 - **Docs Build**: Test on PR (no deploy)
-- **Docs Deploy**: Auto-deploy to `https://study.fourm.info/linear_algebra/` on merge to `main`
+- **Docs Deploy**: Auto-deploy to `https://fourm.info/calculus/` on merge to `main`
 - **Cross-Repo**: Deploys to `FourMInfo/math_tech_study` subdirectory
 
 ## CI Considerations

README.md

@@ -55,4 +55,4 @@ package. Subsequent `julia --project=./notebooks` invocations will resolve
 
 Documentation is deployed cross-repo to the Math & Tech Study Hub:
 
-<https://study.fourm.info/calculus/dev/>
+<https://fourm.info/calculus/dev/>

docs/src/index.md

@@ -6,7 +6,7 @@ This repository contains a package that provides a collection of functions and d
 
 Besides the package documentation, you will also find in the left navigation tab links to documents explaining topics from the source books. These often provide more details than covered in the books. Currently, there is one section: Basics
 
-The Basics documentation section covers the basic foundations of differential and integral calculus, including derivatives, curve sketching, integrals, antiderivatives and integration techniques. The source of the documents in this section is the book [_Foundations of Mathematics: A Preparatory Course_](https://link.springer.com/book/10.1007/978-3-662-67809-1). by Guido Walz, Frank Zeilfelder and Thomas Rießinger. The earlier contents of this book cover basic mathematical concepts, and documentation and code for those topics can be found in the [Math_Foundations](https://study.fourm.info/math_foundations/dev/sites/) package.
+The Basics documentation section covers the basic foundations of differential and integral calculus, including derivatives, curve sketching, integrals, antiderivatives and integration techniques. The source of the documents in this section is the book [_Foundations of Mathematics: A Preparatory Course_](https://link.springer.com/book/10.1007/978-3-662-67809-1). by Guido Walz, Frank Zeilfelder and Thomas Rießinger. The earlier contents of this book cover basic mathematical concepts, and documentation and code for those topics can be found in the [Math_Foundations](https://fourm.info/math_foundations/dev/sites/) package.
 
 The version currently up is a summary created by Claude which has not yet been edited by me. As I go through it I will edit it carefully. Also there is no code or notebooks yet, and those will be created as I go through the text.
 

docs/src/sites.md

@@ -4,11 +4,11 @@ This site is one of several documentation sites for my personal math and technol
 
 The main sites can be found at:
 
-- [Main Study Site](https://study.fourm.info/)
+- [Main Study Site](https://fourm.info/)
 - [FourM GitHub Repository](https://github.com/fourm)
 
 Here are some of the key documentation sites related to my mathematics study:
 
-- [Calculus Docs - the current site (this site)](https://study.fourm.info/calculus/)
-- [Linear Algebra Docs](https://study.fourm.info/linear_algebra/)
-- [Math Foundations Docs](https://study.fourm.info/math_foundations/)
+- [Calculus Docs - the current site (this site)](https://fourm.info/calculus/)
+- [Linear Algebra Docs](https://fourm.info/linear_algebra/)
+- [Math Foundations Docs](https://fourm.info/math_foundations/)