feat(completion): 自动安装 myagents/myclaude/mykimi shell 补全，移除 eval 旧脚本

Makefile

@@ -2,15 +2,15 @@ ROOT_DIR := $(shell pwd)
 VENV_BIN_DIR := $(ROOT_DIR)/.venv/bin
 USER_BIN_DIR := $(HOME)/.local/bin
 COMMANDS := myagents myclaude mykimi
-COMP_DIR := $(HOME)/.local/bin/completions
 
-.PHONY: help install uninstall _symlink-commands _install-completions _uninstall-completions
+.PHONY: help install uninstall _symlink-commands
 
 help:
 	@echo "Usage: make [target]"
 	@echo ""
-	@echo "  install     Sync venv, symlink bin, install completions"
-	@echo "  uninstall   Remove bin and completions"
+	@echo "  install     Sync venv, symlink bin, install shell completions"
+	@echo "  uninstall   Remove bin, completions and user symlinks"
+
 install:
 	@cd "$(ROOT_DIR)" && \
 	if command -v uv >/dev/null 2>&1; then \
@@ -20,7 +20,8 @@ install:
 		PIP_USER=0 .venv/bin/pip install -e .; \
 	fi
 	@$(MAKE) _symlink-commands
-	@$(MAKE) _install-completions
+	@echo "Installing shell completions…"
+	@myagents completion install || echo "Warning: completion install failed"
 
 _symlink-commands:
 	@mkdir -p "$(USER_BIN_DIR)"
@@ -32,15 +33,6 @@ _symlink-commands:
 		echo "Linked $$dst -> $$src"; \
 	done
 
-_install-completions:
-	@$(ROOT_DIR)/scripts/install_completion.sh "$(VENV_BIN_DIR)" "$(COMP_DIR)"
-
-uninstall: _uninstall-completions
+uninstall:
+	@myagents completion uninstall || true
 	@ROOT_DIR="$(ROOT_DIR)" python3 "$(ROOT_DIR)/scripts/rm_user_local_myagents.py"
-
-_uninstall-completions:
-	@rm -f \
-		"$(COMP_DIR)/_myagents" "$(COMP_DIR)/myagents.bash" \
-		"$(COMP_DIR)/_myclaude" "$(COMP_DIR)/myclaude.bash" \
-		"$(COMP_DIR)/_mykimi" "$(COMP_DIR)/mykimi.bash"
-	@echo "Removed completions"