feat: Implement collection deletion and loading spinners

- Add API endpoint and handler to delete collections
- Introduce LoadingSpinner component for async operations
- Show loading spinners during file loading and preview rendering
- Enhance modal accessibility by removing aria-hidden attribute
- Refactor delete functionality to distinguish between collections and files/folders
- Remove unused collection definitions from config

collections/documents/docusaurus.md

@@ -0,0 +1,44 @@
+## Using Docusaurus
+
+Once you've set up Hero, you can use it to develop, manage and publish Docusaurus websites.
+
+## Launch the Hero Website
+
+To start a Hero Docusaurus website in development mode:
+
+- Build the book then close the prompt with `Ctrl+C`
+
+  ```bash
+  hero docs -d
+  ```
+
+- See the book on the local browser
+
+  ```
+  bash /root/hero/var/docusaurus/develop.sh
+  ```
+
+You can then view the website in your browser at `https://localhost:3100`.
+
+## Publish a Website
+
+- To build and publish a Hero website:
+  - Development
+
+    ```bash
+    hero docs -bpd
+    ```
+
+  - Production
+
+    ```bash
+    hero docs -bp
+    ```
+
+If you want to specify a different SSH key, use `-dk`:
+
+```bash
+hero docs -bpd -dk ~/.ssh/id_ed25519
+```
+
+> Note: The container handles the SSH agent and key management automatically on startup, so in most cases, you won't need to manually specify keys.

collections/documents/getting_started/hero_docker.md

@@ -0,0 +1,67 @@
+You can build Hero as a Docker container.
+
+The code is availabe at this [open-source repository](https://github.com/mik-tf/hero-container).
+
+## Prerequisites
+
+- Docker installed on your system (More info [here](https://manual.grid.tf/documentation/system_administrators/computer_it_basics/docker_basics.html#install-docker-desktop-and-docker-engine))
+- SSH keys for deploying Hero websites (if publishing)
+
+## Build the Image
+
+- Clone the repository
+
+    ```
+    git clone https://github.com/mik-tf/hero-container
+    cd hero-container
+    ```
+
+- Build the Docker image:
+
+    ```bash
+    docker build -t heroc .
+    ```
+
+## Pull the Image from Docker Hub
+
+If you don't want to build the image, you can pull it from Docker Hub.
+
+```
+docker pull logismosis/heroc
+```
+
+In this case, use `logismosi/heroc` instead of `heroc` to use the container.
+
+## Run the Hero Container
+
+You can run the container with an interactive shell:
+
+```bash
+docker run -it heroc
+```
+
+You can run the container with an interactive shell, while setting the host as your local network, mounting your current directory as the workspace and adding your SSH keys:
+
+```bash
+docker run --network=host \
+  -v $(pwd):/workspace \
+  -v ~/.ssh:/root/ssh \
+  -it heroc
+```
+
+By default, the container will:
+
+- Start Redis server in the background
+- Copy your SSH keys to the proper location
+- Initialize the SSH agent
+- Add your default SSH key (`id_ed25519`)
+
+To use a different SSH key, specify it with the KEY environment variable (e.g. `KEY=id_ed25519`):
+
+```bash
+docker run --network=host \
+  -v $(pwd):/workspace \
+  -v ~/.ssh:/root/ssh \
+  -e KEY=your_custom_key_name \
+  -it heroc
+```

collections/documents/getting_started/hero_native.md

@@ -0,0 +1,22 @@
+## Basic Hero
+
+You can build Hero natively with the following lines:
+
+```
+curl https://raw.githubusercontent.com/freeflowuniverse/herolib/refs/heads/development/install_hero.sh > /tmp/install_hero.sh
+bash /tmp/install_hero.sh
+```
+
+## Hero for Developers
+
+For developers, use the following commands:
+
+```
+curl 'https://raw.githubusercontent.com/freeflowuniverse/herolib/refs/heads/development/install_v.sh' > /tmp/install_v.sh
+bash /tmp/install_v.sh --analyzer --herolib 
+#DONT FORGET TO START A NEW SHELL (otherwise the paths will not be set)
+```
+
+## Hero with Docker
+
+If you have issues running Hero natively, you can use the [Docker version of Hero](hero_docker.md).

collections/documents/intro.md

@@ -0,0 +1,5 @@
+This ebook contains the basic information to get you started with the Hero tool.
+
+## What is Hero?
+
+Hero is an open-source toolset to work with Git, AI, mdBook, Docusaurus, Starlight and more.

collections/documents/support.md

@@ -0,0 +1 @@
+If you need help with Hero, reach out to the ThreeFold Support team [here](https://threefoldfaq.crisp.help/en/).