Update README (2026-06-29) with latest ABOUT.md, INSTALL.md, CONTRIBUTING.md and badges

CONTRIBUTING.md

@@ -12,29 +12,3 @@ If you want to ask a question, feel free to start a discussion [here](https://gi
 
 >[!NOTE]
 > If you want to add an application or a package to the control-toolbox ecosystem, please follow this [set up tutorial](https://github.com/orgs/control-toolbox/discussions/65).
-
----
-
-## Code philosophy
-
-CTFlows follows a set of design principles that apply to all contributions. Before
-writing code, please read the philosophy documents in [`dev/philosophy/`](dev/philosophy/PHILOSOPHY.md).
-
-The short version:
-
-- **One submodule per responsibility.** Each submodule lives in `src/<Name>/` with its
-  own manifest. The package top-level exports nothing — all symbols are accessed via
-  qualified paths (`CTFlows.Submodule.symbol`).
-- **Qualified imports everywhere.** Use `import Pkg: Pkg` or `using Pkg: Pkg`, never a
-  bare `using Pkg`. Call sites read `Module.symbol`.
-- **One abstract type per noun, one trait-parameter per orthogonal axis.** Conceptual
-  variants are types; orthogonal axes (autonomous?, in-place?, …) are traits in type
-  parameters. Dispatch via extractors.
-- **Structured errors.** Seven typed exceptions from CTBase; sharp rule between
-  `IncorrectArgument` (single value) and `PreconditionError` (relational/state).
-  See [`dev/philosophy/exceptions.md`](dev/philosophy/exceptions.md).
-- **Tests: module wrapper + callable entry + qualified imports.**
-  See [`dev/philosophy/testing.md`](dev/philosophy/testing.md).
-- **Docstrings last**, once the API is stable.
-
-Full philosophy: [`dev/philosophy/PHILOSOPHY.md`](dev/philosophy/PHILOSOPHY.md)

README.md

@@ -9,7 +9,7 @@ The CTFlows.jl package is part of the [control-toolbox ecosystem](https://github
 
 | **Category** | **Badge** |
 |-----------------------|-----------|
-| **Documentation** | [![Stable Docs](https://img.shields.io/badge/docs-stable-blue.svg)](https://control-toolbox.org/CTFlows.jl/stable/) [![Dev Docs](https://img.shields.io/badge/docs-dev-8A2BE2.svg)](https://control-toolbox.org/CTFlows.jl/dev/) |
+| **Documentation** | [![Stable Docs](https://img.shields.io/badge/docs-stable-blue.svg)](https://control-toolbox.org/CTFlows.jl/stable/) [![Dev Docs](https://img.shields.io/badge/docs-dev-8A2BE2.svg)](https://control-toolbox.org/CTFlows.jl/dev/) [![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/control-toolbox/CTFlows.jl) |
 | **CI / Build** | [![Build Status](https://github.com/control-toolbox/CTFlows.jl/actions/workflows/CI.yml/badge.svg?branch=main)](https://github.com/control-toolbox/CTFlows.jl/actions/workflows/CI.yml?query=branch%3Amain) |
 | **Test Coverage** | [![Coverage](https://codecov.io/gh/control-toolbox/CTFlows.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/control-toolbox/CTFlows.jl) |
 | **Package Evaluation** | [![PkgEval](https://img.shields.io/badge/Julia-package-purple)](https://juliahub.com/ui/Packages/General/CTFlows) [![Dependencies](https://juliahub.com/docs/General/CTFlows/stable/deps.svg)](https://juliahub.com/ui/Packages/General/CTFlows?t=2) |