diff --git a/.gitignore b/.gitignore
index ead248a..5363a54 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,194 @@
-# ---> esp-idf
-# gitignore template for esp-idf, the official development framework for ESP32
-# https://github.com/espressif/esp-idf
+Containerfile
+models.json
 
-build/
-sdkconfig
-sdkconfig.old
+# Created by https://www.toptal.com/developers/gitignore/api/windows,linux,macos,direnv,vim,clion+all,esp-idf
+# Edit at https://www.toptal.com/developers/gitignore?templates=windows,linux,macos,direnv,vim,clion+all,esp-idf
 
+### CLion+all ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### CLion+all Patch ###
+# Ignore everything but code style settings and run configurations
+# that are supposed to be shared within teams.
+
+.idea/*
+
+!.idea/codeStyles
+!.idea/runConfigurations
+
+### direnv ###
+.direnv
+.envrc
+
+#!! ERROR: esp-idf is undefined. Use list command to see defined gitignore types !!#
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon

+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### macOS Patch ###
+# iCloud generated files
+*.icloud
+
+### Vim ###
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.toptal.com/developers/gitignore/api/windows,linux,macos,direnv,vim,clion+all,esp-idf
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..7dabf8a
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,150 @@
+{
+  description = "ESP32 development tools";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs-esp-dev = {
+      #url = "github:mirrexagon/nixpkgs-esp-dev";
+      url = "github:dvdvgt/nixpkgs-esp-dev/update-v6.0.1";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
+    };
+  };
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      nixpkgs-esp-dev,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        idfVersion = "v6.0.1";
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ (import "${nixpkgs-esp-dev}/overlay.nix") ];
+          config.permittedInsecurePackages = [
+            "python3.13-ecdsa-0.19.1"
+          ];
+        };
+        autoSerialPort = pkgs.writeShellScriptBin "esp-port" ''
+          set -euo pipefail
+
+          # Try common ESP USB serial patterns
+          # TODO: reduce to Waveshare ESP32-S3 detection
+          PORT=$(
+            for p in /dev/serial/by-id/*; do
+              case "$p" in
+                *CP210*|*ch340*|*USB*|*ESP*) echo "$p"; break ;;
+              esac
+            done
+          )
+
+          if [ -z "$PORT" ]; then
+            echo "No ESP serial device found in /dev/serial/by-id"
+            echo "Fallback: listing /dev/ttyUSB* /dev/ttyACM*"
+            ls /dev/ttyUSB* /dev/ttyACM* 2>/dev/null || true
+            exit 1
+          fi
+
+          echo "$PORT"
+        '';
+        esp-idf = pkgs.esp-idf-full.override {
+          rev = idfVersion;
+          sha256 = "sha256-4KJa686qc+u7XkF/GS2o53l1SpwP2EmdqAn/qmlL1yU=";
+        };
+      in
+      {
+        apps = {
+          run-agent = {
+            type = "app";
+            program = "${pkgs.writeShellScript "run-agent" ''
+              podman run -it --rm -v ./:/src -v ./models.json:/root/.pi/agent/models.json --device=/dev/ttyACM0 pidev:latest
+            ''}";
+          };
+          build-agent = {
+            type = "app";
+            program = "${pkgs.writeShellScript "build-agent" ''
+              podman build -t pidev:latest -f Containerfile .
+            ''}";
+          };
+          menuconfig = {
+            type = "app";
+            meta.description = "⚙️ Open ESP-IDF configuration menu (sdkconfig)";
+            program = "${pkgs.writeShellScriptBin "idf-menuconfig" ''
+              ${esp-idf}/tools/idf.py menuconfig
+            ''}/bin/idf-menuconfig";
+          };
+          build = {
+            type = "app";
+            meta.description = "🧱 Build ESP32 firmware using ESP-IDF ${idfVersion}";
+            program = "${pkgs.writeShellScriptBin "idf-build" ''
+              ${esp-idf}/tools/idf.py build
+            ''}/bin/idf-build";
+          };
+          flash = {
+            type = "app";
+            meta.description = "⚡ Flash firmware to ESP32-S3 over auto-detected serial port";
+            program = "${pkgs.writeShellScriptBin "idf-flash" ''
+              set -euo pipefail
+
+              PORT=$(${autoSerialPort}/bin/esp-port)
+              echo "Flashing on: $PORT"
+
+              ${esp-idf}/tools/idf.py -p "$PORT" flash
+            ''}/bin/idf-flash";
+          };
+          monitor = {
+            type = "app";
+            meta.description = "📡 Open serial monitor for ESP32 logs";
+            program = "${pkgs.writeShellScriptBin "idf-monitor" ''
+              set -euo pipefail
+
+              PORT=$(${autoSerialPort}/bin/esp-port)
+              echo "Monitoring: $PORT"
+
+              ${esp-idf}/tools/idf.py -p "$PORT" monitor
+            ''}/bin/idf-monitor";
+          };
+          clean = {
+            type = "app";
+            meta.description = "🧹 Clean ESP-IDF build directory";
+            program = "${pkgs.writeShellScriptBin "idf-clean" ''
+              ${esp-idf}/tools/idf.py clean
+            ''}/bin/idf-clean";
+          };
+          full = {
+            type = "app";
+            meta.description = "🚀 Full pipeline: build → flash → monitor";
+            program = "${pkgs.writeShellScriptBin "idf-full" ''
+              set -euo pipefail
+
+              PORT=$(${autoSerialPort}/bin/esp-port)
+
+              echo "🧱 Building..."
+              ${esp-idf}/tools/idf.py build
+              echo "⚡ Flashing on $PORT..."
+              ${esp-idf}/tools/idf.py -p "$PORT" flash
+              echo "📡 Starting monitor..."
+              ${esp-idf}/tools/idf.py -p "$PORT" monitor
+            ''}/bin/idf-full";
+          };
+        };
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            esp-idf
+            git
+            minicom
+            usbutils
+            gawk
+            coreutils
+            cmake
+            ninja
+          ];
+        };
+      }
+    );
+}