add screenshots, write README

Signed-off-by: Julien Veyssier <[email protected]>

README.md

@@ -1,2 +1,31 @@
 # Nextcloud assistant
 
+This app brings a user interface to use the Nextcloud text processing feature.
+
+It allows users to launch text processing tasks, be notified when they finish and see the results.
+The assistant also appears in others apps like Text to easily process parts of a document.
+
+### How to use it
+
+A new right header  menu entry appears. Once clicked, the assistant is displayed and you can select and task type and
+set the input text you want to process.
+
+Once a task is scheduled, it will run as a background job. When it is finished, you will receive a notification
+from which the results can be displayed.
+
+Other apps can integrate with the assistant. For example, Text will display an inline button besides every paragraph
+to directly select a task type to process this paragraph. Selecting a task this way will open the assistant with the task
+being pre-selected and the input text set.
+
+### Text processing providers
+
+In the assistant, the list of available tasks depends on the available providers installed via other apps.
+This means you have complete freedom over which service/software will actually run your text processing tasks.
+So far, the [Large language model](https://github.com/nextcloud/llm#readme)
+and the [OpenAi/LocalAI integration](https://apps.nextcloud.com/apps/integration_openai) apps
+include text processing providers to:
+* Summarize
+* Extract topics
+* Generate a headline
+* Get an answer from a free prompt
+* Reformulate (OpenAi/LocalAi only)

appinfo/info.xml

@@ -4,7 +4,23 @@
     <name>Nextcloud assistant</name>
     <summary>Process and transform text</summary>
     <description><![CDATA[
-This app brings text processing features to Nextcloud.
+This app brings a user interface to use the Nextcloud text processing feature.
+
+It allows users to launch text processing tasks, be notified when they finish and see the results.
+The assistant also appears in others apps like Text to easily process parts of a document.
+
+In the assistant, the list of available tasks depends on the available providers installed via other apps.
+So far, the [Large language model](https://github.com/nextcloud/llm#readme)
+and the [OpenAi/LocalAI integration](https://apps.nextcloud.com/apps/integration_openai) apps
+include such providers to:
+* Summarize
+* Extract topics
+* Generate a headline
+* Get an answer from a free prompt
+* Reformulate
+
+Once a task is scheduled, it will run as a background job. When it is finished, the user receives a notification
+from which the results can be displayed.
 ]]></description>
     <version>1.0.0</version>
     <licence>agpl</licence>