build(worktree): add script for setting up git worktrees

Signed-off-by: Deluan <deluan@navidrome.org>

Makefile

@@ -233,6 +233,39 @@ get-music: ##@Development Download some free music from Navidrome's demo instanc
 .PHONY: get-music
 
 
+##########################################
+#### Worktrees
+
+WORKTREES_DIR := .worktrees
+
+wt: check_go_env ##@Worktrees Create and setup a git worktree. Usage: make wt name=feature-name [go=1]
+	@if [ -z "${name}" ]; then echo "Usage: make wt name=<branch-name> [go=1]"; exit 1; fi
+	@mkdir -p $(WORKTREES_DIR)
+	@echo "Creating worktree for branch '${name}'..."
+	@git worktree add $(WORKTREES_DIR)/${name} -b ${name} 2>/dev/null || \
+		git worktree add $(WORKTREES_DIR)/${name} ${name}
+	@if [ -n "${go}" ]; then \
+		./scripts/setup-worktree.sh $(WORKTREES_DIR)/${name} --go-only; \
+	else \
+		./scripts/setup-worktree.sh $(WORKTREES_DIR)/${name}; \
+	fi
+	@echo "\nWorktree ready at $(WORKTREES_DIR)/${name}"
+	@echo "  cd $(WORKTREES_DIR)/${name}"
+.PHONY: wt
+
+rm-wt: ##@Worktrees Remove a git worktree. Usage: make rm-wt name=feature-name
+	@if [ -z "${name}" ]; then echo "Usage: make rm-wt name=<branch-name>"; exit 1; fi
+	@if [ ! -d "$(WORKTREES_DIR)/${name}" ]; then echo "Worktree '${name}' not found in $(WORKTREES_DIR)/"; exit 1; fi
+	@echo "Removing worktree '${name}'..."
+	@git worktree remove --force $(WORKTREES_DIR)/${name}
+	@echo "Worktree '${name}' removed."
+	@echo "Note: branch '${name}' still exists. Delete it with: git branch -D ${name}"
+.PHONY: rm-wt
+
+ls-wt: ##@Worktrees List all active git worktrees
+	@git worktree list
+.PHONY: ls-wt
+
 ##########################################
 #### Miscellaneous