diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..d5b03b2
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  sanity:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v4
+      - name: Sanity
+        run: |
+          test -f README.md || test -f Readme.md || test -f readme.md || test -f README
+          echo "Repository sanity OK"
diff --git a/.theia/launch.json b/.theia/launch.json
new file mode 100644
index 0000000..dd9732e
--- /dev/null
+++ b/.theia/launch.json
@@ -0,0 +1,23 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "cwd": "${workspaceRoot}",
+      "executable": "./bin/executable.elf",
+      "name": "Debug Microcontroller",
+      "request": "launch",
+      "type": "cortex-debug",
+      "servertype": "jlink"
+    },
+  {
+    "cwd": "${workspaceRoot}",
+    "executable": "./bin/executable.elf",
+    "name": "Debug Microcontroller",
+    "request": "launch",
+    "type": "cortex-debug",
+    "servertype": "openocd"
+  }
+  ]
+}
diff --git a/README.md b/README.md
index ed629d7..c758e64 100644
--- a/README.md
+++ b/README.md
@@ -23,4 +23,52 @@ Default configuration:
 - Key2: toggle click
 - Key3 - Key6: toggle rec mode
 
-I recommend using Tera Term or another VT100 compatible tool to see whats going on inside of the application
\ No newline at end of file
+I recommend using Tera Term or another VT100 compatible tool to see whats going on inside of the application
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+<!-- CHANTIER:AUDIT START -->
+## Audit & Execution Plan (2026-03-10)
+
+### Snapshot
+- Priority: `P2`
+- Tech profile: `other`
+- Workflows: `yes`
+- Tests: `yes`
+- Debt markers: `0`
+- Source files: `7`
+
+### Corrections Prioritaires
+- [ ] Optimisation ciblée perf/maintenabilité
+- [ ] Ajouter/fiabiliser les commandes de vérification automatiques.
+- [ ] Clore les points bloquants avant optimisation avancée.
+
+### Optimisation
+- [ ] Identifier le hotspot principal et mesurer avant/après.
+- [ ] Réduire la complexité des modules les plus touchés.
+
+### Mémoire chantier
+- Control plane: `/Users/electron/.codex/memories/electron_rare_chantier`
+- Repo card: `/Users/electron/.codex/memories/electron_rare_chantier/REPOS/esp32_multitrack_looper.md`
+
+<!-- CHANTIER:AUDIT END -->
diff --git a/config.h b/config.h
index 460466b..86f5f66 100644
--- a/config.h
+++ b/config.h
@@ -64,7 +64,7 @@
 #define MIDI_RECV_FROM_SERIAL
 
 /* use this to display a scope on the oled display */
-//#define OLED_OSC_DISP_ENABLED
+#define OLED_OSC_DISP_ENABLED
 
 #define AUDIO_KIT_BUTTON_ANALOG
 
diff --git a/tests/README.md b/tests/README.md
new file mode 100644
index 0000000..1ba4ecd
--- /dev/null
+++ b/tests/README.md
@@ -0,0 +1,12 @@
+# Smoke Tests
+
+## Objectif
+Valider un niveau minimal de qualité avant optimisation.
+
+## Vérifications minimales
+- Arborescence projet cohérente.
+- README présent et à jour.
+- Scripts/commandes principales documentés.
+
+## Critères de réussite
+- Aucune erreur bloquante détectée sur les commandes de base.