chore: rimuove il container Docker per il dev

Lo sviluppo passa da hot reload via Docker/web a Flutter installato
sull'host con emulatore Android dedicato (vedi CLAUDE.md).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docker/dev/Dockerfile

@@ -1,18 +0,0 @@
-FROM ubuntu:22.04
-
-ARG FLUTTER_VERSION=3.41.9
-
-ENV DEBIAN_FRONTEND=noninteractive \
-    FLUTTER_HOME=/opt/flutter \
-    PATH="/opt/flutter/bin:${PATH}"
-
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    curl git unzip xz-utils ca-certificates \
-    && rm -rf /var/lib/apt/lists/*
-
-RUN git clone --depth 1 --branch ${FLUTTER_VERSION} \
-        https://github.com/flutter/flutter.git /opt/flutter && \
-    flutter config --no-analytics --enable-web && \
-    flutter precache --web
-
-WORKDIR /workspace

docker/dev/docker-compose.yml

@@ -1,14 +0,0 @@
-services:
-  dev:
-    build: .
-    ports:
-      - "5173:5173"
-    volumes:
-      - ../../:/workspace
-      - pub-cache:/root/.pub-cache
-    command: bash /workspace/docker/dev/entrypoint.sh
-    stdin_open: true
-    tty: true
-
-volumes:
-  pub-cache:

docker/dev/entrypoint.sh

@@ -1,18 +0,0 @@
-#!/bin/bash
-set -e
-
-# Aggiunge supporto web se mancante (crea solo web/, non tocca lib/)
-if [[ ! -d /workspace/web ]]; then
-  echo "→ Inizializzazione supporto web..."
-  flutter create . --platforms=web
-fi
-
-# Aggiunge permesso CAMERA se assente (richiesto da mobile_scanner)
-MANIFEST=/workspace/android/app/src/main/AndroidManifest.xml
-if [[ -f "$MANIFEST" ]] && ! grep -q "CAMERA" "$MANIFEST"; then
-  echo "→ Aggiunta permesso CAMERA in AndroidManifest.xml..."
-  sed -i 's|<application|<uses-permission android:name="android.permission.CAMERA" />\n    <application|' "$MANIFEST"
-fi
-
-flutter pub get
-exec flutter run -d web-server --web-hostname=0.0.0.0 --web-port=5173