fix(install): устранены конфликты stow в WSL и opencode

- Зачем:
  - нужно было убрать падение install.sh на абсолютных WSL-симлинках и существующей runtime-директории opencode.
- Что:
  - убран `--restow` из вызова stow, чтобы install не падал на ссылках `~/.aws` и `~/.azure`.
  - настройка `~/.config/opencode` переведена на ручную установку с backup существующего `opencode.json` и сохранением runtime-файлов.
  - в tests/test_install.sh добавлены сценарии для WSL-симлинков и существующей директории opencode.
- Проверка:
  - bash -n install.sh
  - bash -n tests/test_install.sh
  - ./tests/test_install.sh

install.sh

@@ -19,7 +19,7 @@ warn()  { echo -e "${YELLOW}[!]${NC} $*"; }
 error() { echo -e "${RED}[✗]${NC} $*"; }
 
 stow_package() {
-    "$STOW_BIN" --target="$HOME" -v --restow "$@" 2>&1 | sed "s/^/  /"
+    "$STOW_BIN" --target="$HOME" -v "$@" 2>&1 | sed "s/^/  /"
 }
 
 ensure_symlink() {
@@ -56,6 +56,53 @@ ensure_symlink() {
     ln -s "$src" "$dst"
 }
 
+backup_existing_path() {
+    local path="$1"
+    local label="$2"
+    local backup_path
+
+    backup_path="${path}.bak.$(date +%Y%m%d%H%M%S)"
+    if [ -e "$backup_path" ] || [ -L "$backup_path" ]; then
+        backup_path="${backup_path}.$$"
+    fi
+
+    mv "$path" "$backup_path"
+    warn "$label уже существовал, сохранил резервную копию: $backup_path"
+}
+
+copy_managed_file() {
+    local src="$1"
+    local dst="$2"
+    local label="$3"
+    local src_real=""
+    local dst_real=""
+
+    mkdir -p "$(dirname "$dst")"
+    src_real="$(readlink -f "$src" 2>/dev/null || printf '%s' "$src")"
+
+    if [ -L "$dst" ]; then
+        dst_real="$(readlink -f "$dst" 2>/dev/null || true)"
+        if [ "$dst_real" = "$src_real" ]; then
+            rm "$dst"
+        else
+            backup_existing_path "$dst" "$label"
+        fi
+    elif [ -f "$dst" ]; then
+        if cmp -s "$src" "$dst"; then
+            return 0
+        fi
+        backup_existing_path "$dst" "$label"
+    elif [ -d "$dst" ]; then
+        warn "$dst уже существует как директория, пропускаю замену"
+        return 0
+    elif [ -e "$dst" ]; then
+        warn "$dst уже существует и не является обычным файлом, пропускаю замену"
+        return 0
+    fi
+
+    cp -f "$src" "$dst"
+}
+
 is_interactive() {
     case "$INSTALL_INTERACTIVE_MODE" in
         always) return 0 ;;
@@ -75,7 +122,7 @@ if ! command -v "$STOW_BIN" &>/dev/null; then
 fi
 
 # --- Stow пакеты ---
-PACKAGES=(bash tmux vim zed vscode agents opencode codex gemini)
+PACKAGES=(bash tmux vim zed vscode agents codex gemini)
 AVAILABLE_PACKAGES=()
 
 info "Применяю stow пакеты..."
@@ -92,6 +139,27 @@ if [ "${#AVAILABLE_PACKAGES[@]}" -gt 0 ]; then
     stow_package "${AVAILABLE_PACKAGES[@]}"
 fi
 
+SKILLS_SRC="$DOTFILES_DIR/agents/.agents/skills"
+
+# --- Opencode: установка без stow ---
+OPENCODE_DIR="$HOME/.config/opencode"
+OPENCODE_SRC_DIR="$DOTFILES_DIR/opencode/.config/opencode"
+OPENCODE_JSON_SRC="$OPENCODE_SRC_DIR/opencode.json"
+
+mkdir -p "$OPENCODE_DIR"
+
+if [ -d "$OPENCODE_SRC_DIR/agents" ]; then
+    ensure_symlink "$OPENCODE_SRC_DIR/agents" "$OPENCODE_DIR/agents"
+fi
+
+if [ -d "$SKILLS_SRC" ]; then
+    ensure_symlink "$SKILLS_SRC" "$OPENCODE_DIR/skills"
+fi
+
+if [ -f "$OPENCODE_JSON_SRC" ]; then
+    copy_managed_file "$OPENCODE_JSON_SRC" "$OPENCODE_DIR/opencode.json" "opencode.json"
+fi
+
 # --- Claude Code: установка без stow ---
 # settings.json КОПИРУЕТСЯ (не линкуется), чтобы Claude Code не модифицировал
 # файл в репозитории. Локальные настройки — в settings.local.json.
@@ -120,7 +188,6 @@ fi
 mkdir -p "$HOME/.claude"
 
 # Skills (симлинк)
-SKILLS_SRC="$DOTFILES_DIR/agents/.agents/skills"
 if [ -d "$SKILLS_SRC" ]; then
     ensure_symlink "$SKILLS_SRC" "$HOME/.claude/skills"
 fi

tests/test_install.sh

@@ -162,6 +162,29 @@ test_preserves_nonempty_skills_directory() {
   [ -f "$home_dir/.claude/skills/local.txt" ] || fail "Expected local skill data to be preserved"
 }
 
+test_opencode_runtime_dir_is_preserved_and_config_is_managed() {
+  local fixture repo_root home_dir backup_path
+  fixture="$(setup_fixture)"
+  repo_root="$fixture/repo"
+  home_dir="$fixture/home"
+  mkdir -p "$home_dir/.config/opencode"
+  echo runtime > "$home_dir/.config/opencode/package.json"
+  cat > "$home_dir/.config/opencode/opencode.json" <<'EOF'
+{"source":"local"}
+EOF
+
+  run_install "$repo_root" "$home_dir" env WSL_DISTRO_NAME= INSTALL_INTERACTIVE_MODE=never >/tmp/test-install.out
+
+  [ -f "$home_dir/.config/opencode/package.json" ] || fail "Expected opencode runtime files to be preserved"
+  [ -L "$home_dir/.config/opencode/agents" ] || fail "Expected ~/.config/opencode/agents symlink"
+  [ -L "$home_dir/.config/opencode/skills" ] || fail "Expected ~/.config/opencode/skills symlink"
+  assert_file_contains "$home_dir/.config/opencode/opencode.json" '"$schema": "https://opencode.ai/config.json"'
+
+  backup_path="$(find "$home_dir/.config/opencode" -maxdepth 1 -name 'opencode.json.bak.*' -print -quit)"
+  [ -n "$backup_path" ] || fail "Expected backup for existing opencode.json"
+  assert_file_contains "$backup_path" '"source":"local"'
+}
+
 test_broken_claude_symlink_does_not_fail() {
   local fixture repo_root home_dir
   fixture="$(setup_fixture)"
@@ -176,6 +199,22 @@ test_broken_claude_symlink_does_not_fail() {
   [ ! -L "$home_dir/.claude" ] || fail "Expected ~/.claude to stop being a symlink"
 }
 
+test_absolute_symlinks_in_home_do_not_break_install() {
+  local fixture repo_root home_dir
+  fixture="$(setup_fixture)"
+  repo_root="$fixture/repo"
+  home_dir="$fixture/home"
+  mkdir -p "$home_dir" "$fixture/windows/.aws" "$fixture/windows/.azure"
+  ln -s "$fixture/windows/.aws" "$home_dir/.aws"
+  ln -s "$fixture/windows/.azure" "$home_dir/.azure"
+
+  run_install "$repo_root" "$home_dir" env WSL_DISTRO_NAME= INSTALL_INTERACTIVE_MODE=never >/tmp/test-install.out
+  run_install "$repo_root" "$home_dir" env WSL_DISTRO_NAME= INSTALL_INTERACTIVE_MODE=never >/tmp/test-install.out
+
+  [ -L "$home_dir/.aws" ] || fail "Expected ~/.aws symlink to survive install"
+  [ -L "$home_dir/.azure" ] || fail "Expected ~/.azure symlink to survive install"
+}
+
 test_wsl_noninteractive_skips_file_changes() {
   local fixture repo_root home_dir wsl_conf output
   fixture="$(setup_fixture)"
@@ -246,7 +285,9 @@ main() {
   test_rerun_does_not_duplicate_bashrc_line
   test_repairs_nested_skills_directory_bug
   test_preserves_nonempty_skills_directory
+  test_opencode_runtime_dir_is_preserved_and_config_is_managed
   test_broken_claude_symlink_does_not_fail
+  test_absolute_symlinks_in_home_do_not_break_install
   test_wsl_noninteractive_skips_file_changes
   test_wsl_interactive_adds_boot_command
   test_wsl_existing_boot_command_is_preserved