feat: add upgrade and migration flow for native fnOS

havline/cmd/install_callback

@@ -1,9 +1,14 @@
 #!/bin/bash
 set -euo pipefail
 
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "$SCRIPT_DIR/migrate_legacy.sh"
+
 mkdir -p "$TRIM_PKGVAR/logs"
 chown -R "$TRIM_USERNAME:$TRIM_GROUPNAME" "$TRIM_PKGVAR"
 
+migrate_legacy_data
+
 ARCH="$(uname -m)"
 case "$ARCH" in
   x86_64|amd64) ARCH_DIR="amd64" ;;

havline/cmd/migrate_legacy.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+set -euo pipefail
+
+migrate_legacy_data() {
+  local legacy_root="$TRIM_PKGVAR/data"
+  local legacy_db="$legacy_root/havline.db"
+  local target_db="$TRIM_PKGVAR/havline.db"
+
+  if [ ! -f "$legacy_db" ] || [ -f "$target_db" ]; then
+    return 0
+  fi
+
+  echo "检测到旧版数据布局：$legacy_root"
+  mkdir -p "$TRIM_PKGVAR/backups"
+
+  for item in "$legacy_root"/* "$legacy_root"/.[!.]* "$legacy_root"/..?*; do
+    [ -e "$item" ] || continue
+    local name
+    name="$(basename "$item")"
+    if [ -e "$TRIM_PKGVAR/$name" ]; then
+      continue
+    fi
+    mv "$item" "$TRIM_PKGVAR/$name"
+  done
+
+  echo "旧版数据已迁移到：$TRIM_PKGVAR"
+}
+
+backup_database() {
+  local db="$TRIM_PKGVAR/havline.db"
+  if [ ! -f "$db" ]; then
+    return 0
+  fi
+
+  mkdir -p "$TRIM_PKGVAR/backups"
+  cp -f "$db" "$TRIM_PKGVAR/backups/havline-pre-upgrade-$(date +%Y%m%d%H%M%S).db"
+}

havline/cmd/upgrade_callback

@@ -1,6 +1,9 @@
 #!/bin/bash
 set -euo pipefail
 
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "$SCRIPT_DIR/migrate_legacy.sh"
+
 if [ -f "$TRIM_PKGVAR/havline.db" ] && [ ! -r "$TRIM_PKGVAR/havline.db" ]; then
   echo "数据库不可读：$TRIM_PKGVAR/havline.db" > "$TRIM_TEMP_LOGFILE"
   exit 1
@@ -11,4 +14,7 @@ if [ -f "$TRIM_PKGVAR/session_secret" ] && [ ! -r "$TRIM_PKGVAR/session_secret"
   exit 1
 fi
 
+migrate_legacy_data
+backup_database
+
 exit 0