fix: standardize PIGWay branding and conflict override

install.sh

@@ -2,6 +2,19 @@
 set -euo pipefail
 cd "$(dirname "$0")"
 
+FORCE_I2C_CONFLICT=0
+for arg in "$@"; do
+  case "$arg" in
+    --force-i2c-conflict) FORCE_I2C_CONFLICT=1 ;;
+    -h|--help)
+      echo "Usage: sudo ./install.sh [--force-i2c-conflict]"
+      echo "  --force-i2c-conflict  Continue even when another process owns /dev/i2c-1."
+      exit 0
+      ;;
+    *) echo "ERROR: unknown option: $arg" >&2; exit 2 ;;
+  esac
+done
+
 for required in app/pigway_pi_control.py app/pigway_pi_control_api.py app/oled_font_5x7.bin web/index.html config/pigway-pi-control.conf systemd/pigway-pi-control.service systemd/pigway-pi-control-api.service; do
   if [ ! -f "$required" ]; then
     echo "ERROR: required file missing: $required" >&2
@@ -30,12 +43,21 @@ i2c_conflict_pids() {
 
 I2C_CONFLICTS="$(i2c_conflict_pids)"
 if [ -n "$I2C_CONFLICTS" ]; then
-  echo "ERROR: /dev/i2c-1 is already in use by another process:" >&2
+  if [ "$FORCE_I2C_CONFLICT" -eq 1 ]; then
+    echo "WARNING: /dev/i2c-1 is already in use by another process:" >&2
+  else
+    echo "ERROR: /dev/i2c-1 is already in use by another process:" >&2
+  fi
   while read -r pid; do
     ps -p "$pid" -o pid=,user=,comm=,args= >&2 || true
   done <<< "$I2C_CONFLICTS"
-  echo "Stop or reconfigure the conflicting OLED/LED controller, then run the installer again." >&2
-  exit 1
+  if [ "$FORCE_I2C_CONFLICT" -eq 1 ]; then
+    echo "WARNING: continuing because --force-i2c-conflict was specified; no conflicting process will be stopped." >&2
+  else
+    echo "Stop or reconfigure the conflicting OLED/LED controller, then run the installer again." >&2
+    echo "If concurrent control is intentional, rerun with --force-i2c-conflict." >&2
+    exit 1
+  fi
 fi
 
 echo "[2/8] 等待 APT/DPKG..."
@@ -139,8 +161,12 @@ check "OLED pages 0..3" grep -Fq 'cmd(0x22);cmd(0);cmd(3)' "$APP"
 check "UI CPU/TMP/DSK" grep -Fq 'f"TMP {temp:.1f}C"' "$APP"
 check "UI IP4/IP6" grep -Fq 'ip_label' "$APP"
 check "UI right column x=72" grep -Fq 'draw_text_5x7(pix,72,y,right[row])' "$APP"
-no_other_i2c_owner() { [ -z "$(i2c_conflict_pids)" ]; }
-check "No other I2C owner" no_other_i2c_owner
+if [ "$FORCE_I2C_CONFLICT" -eq 1 ]; then
+  printf "  %-30s WARN (forced)\n" "I2C owner conflict"
+else
+  no_other_i2c_owner() { [ -z "$(i2c_conflict_pids)" ]; }
+  check "No other I2C owner" no_other_i2c_owner
+fi
 check "Service running" systemctl is-active --quiet pigway-pi-control.service
 check "API/Web service running" systemctl is-active --quiet pigway-pi-control-api.service
 check "API/Web version 3.6.0" grep -Fq 'APP_VERSION="3.6.0"' /usr/local/sbin/pigway-pi-control-api