feat: Plan Mode implementation (Phase 2A)

- EnterPlanModeTool: switch to read-only mode with plan file path management - ExitPlanModeTool: restore permissions and validate plan content - PermissionRuleEngine: plan file edit exception in PLAN mode - SystemPromptBuilder: 5-phase plan workflow instructions injection - /plan command: toggle plan mode from command line - Plan file stored at ~/.claude/projects/[path]/PLAN.md Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-05 09:35:44 +08:00
parent bd98dea6b3
commit cb76b267f1
6 changed files with 466 additions and 4 deletions
@@ -0,0 +1,48 @@
+package com.claudecode.command.impl;
+
+import com.claudecode.command.CommandContext;
+import com.claudecode.command.SlashCommand;
+import com.claudecode.permission.PermissionSettings;
+import com.claudecode.permission.PermissionTypes.PermissionMode;
+
+/**
+ * /plan 命令 —— 对应 claude-code/src/commands/plan/plan.tsx。
+ * <p>
+ * 切换计划模式开关。在计划模式下，AI只能分析不能修改。
+ */
+public class PlanCommand implements SlashCommand {
+
+    private final PermissionSettings permissionSettings;
+
+    public PlanCommand(PermissionSettings permissionSettings) {
+        this.permissionSettings = permissionSettings;
+    }
+
+    @Override
+    public String name() {
+        return "plan";
+    }
+
+    @Override
+    public String description() {
+        return "Toggle plan mode (analysis only, no file modifications)";
+    }
+
+    @Override
+    public String execute(String args, CommandContext context) {
+        PermissionMode currentMode = permissionSettings.getCurrentMode();
+
+        if (currentMode == PermissionMode.PLAN) {
+            // Exit plan mode
+            permissionSettings.setCurrentMode(PermissionMode.DEFAULT);
+            return "📋 Exited plan mode. Normal permissions restored.\n" +
+                    "All tools are now available.";
+        } else {
+            // Enter plan mode
+            permissionSettings.setCurrentMode(PermissionMode.PLAN);
+            return "📋 Entered plan mode.\n" +
+                    "Only read-only tools are available. Use /plan again to exit.\n" +
+                    "Or ask the AI to call EnterPlanMode for the full workflow.";
+        }
+    }
+}