Fix table add diagram

packages/backend/README.md

@@ -4,13 +4,40 @@ The AI questionaire backend is an iExec application responsible for taking the i
 
 Unfortunatelly, despite all our attempts to get that working with iExec, the only thing we could go working is a mock node.js version, which can be found in [`./node-mocked`](,/node-mocked). Everything else failed in one way or another, and this part of the repository is here to document the various ways in which we couldn't get it to work.
 
+## Architecture
+
+
+```mermaid
+flowchart
+    subgraph User
+        UserUser[User]
+        UserUser ---|Survey Answers| Prompt
+        ResultList
+    end
+    subgraph iExec
+        subgraph DataProtectorCore
+            Prompt ---|ProtectData| PromptDataset
+        end
+        UserUser ---|ProcessData| Backend
+        subgraph Backend
+            PromptDataset --> PromptFile
+            PromptFile --> Exec
+            Model --> Exec
+            Exec --> Results
+             Results ---|ProcessDataResult| ResultList
+        end
+    end
+
+```
+
 ## List of attempts
 
 | # | Attempt name | Description | Status |
+| --- | --- | --- | --- |
 | 1 | [`python-sconify`](./python-sconify) | An attempt to follow iExec's [Build your first application with Scone framework](https://protocol.docs.iex.ec/for-developers/confidential-computing/intel-sgx-technology) documentation. | :x: DCAP validation fail on both Prod and Debug workerpools. |
 | 2 | [`python-transformers`](./python-sconify) | An attempt to use the Huggingface [`transformers`](https://huggingface.co/docs/transformers/index) library for the AI model. | :o: Abandonded as we experiment with simpler Python SGX examples first |
 | 3 | [`python-gramine`](./python-gramine/) | Attempt to use Gramine instead of Scone following the iExec's unlisted [Build a Gramine application](https://github.com/iExecBlockchainComputing/documentation/blob/v8-staging/for-developers/confidential-computing/create-your-first-gramine-app.md) documentation. | :x: iExec does not support Gramine at the moment |
-| 4 | [`node-mocked`](./node-mocked) | The default hello World" app generated by [`idapp-cli`](https://www.npmjs.com/package/idapp-cli) | :check: Deployed as **`0x05F88328fAe2Ac1271C68f2E65864692c3AD9B0A`** |
+| 4 | [`node-mocked`](./node-mocked) | The default hello World" app generated by [`idapp-cli`](https://www.npmjs.com/package/idapp-cli) | :heavy_check_mark: Deployed as **`0x05F88328fAe2Ac1271C68f2E65864692c3AD9B0A`** (but does no AI) |
 | 5 | [`nodejs-transformers.js`](./nodejs-transformers.js/) | An attempt to use the [transformers.js](https://huggingface.co/docs/transformers.js/index) library by Huggingface. | :x: SCONE's Node.js version (14) is too old to support transformers.js. |
 | 6 | [`nodejs-execFile`](./nodejs-execFile/) | An attempt to use the [`llamafile`](https://github.com/Mozilla-Ocho/llamafile) executable with the Node version we have | :x: SCONE limitations: ENOSYS when attempting to spawn the process. |
 | 7 | `nodejs-wllama` | An attempt to use the [`@wllama/wllama`](https://huggingface.co/spaces/ngxson/wllama) library (also based on `llama.cpp`) for inference. | :x: SCONE's Node.js version (14) doesn't support the [WebAssembly exception handling extension](https://webassembly.github.io/exception-handling/js-api/) wllama requires. |