feat(ai): add general action mode

apps/desktop/src/lib/ai/__tests__/aiActions.spec.ts

@@ -3,13 +3,12 @@ import { ASK_ACTIONS, AGENT_ACTIONS, defaultActionForMode, isValidActionForMode
 
 describe("AI action mode mapping", () => {
   describe("defaultActionForMode", () => {
-    it("defaults Ask to generate", () => {
-      expect(defaultActionForMode("ask")).toBe("generate");
+    it("defaults Ask to general", () => {
+      expect(defaultActionForMode("ask")).toBe("general");
     });
 
-    it("defaults Agent to query (not generate)", () => {
-      // The whole point of the feature: Agent mode must not default to SQL generation.
-      expect(defaultActionForMode("agent")).toBe("query");
+    it("defaults Agent to general", () => {
+      expect(defaultActionForMode("agent")).toBe("general");
     });
   });
 
@@ -47,15 +46,15 @@ describe("AI action mode mapping", () => {
   });
 
   describe("action sets", () => {
-    it("Ask menu keeps the SQL-producing actions", () => {
-      expect(ASK_ACTIONS).toEqual(["generate", "explain", "optimize", "fix", "convert", "sampleData"]);
+    it("Ask menu starts with general, then SQL-producing actions", () => {
+      expect(ASK_ACTIONS).toEqual(["general", "generate", "explain", "optimize", "fix", "convert", "sampleData"]);
     });
 
-    it("Agent menu is task-oriented, starts with query, and still offers generate", () => {
-      expect(AGENT_ACTIONS[0]).toBe("query");
-      // generate is shared so users can still request SQL-only output ("生成但不执行").
+    it("Agent menu starts with general, then task-oriented actions", () => {
+      expect(AGENT_ACTIONS[0]).toBe("general");
+      // generate is shared so users can still request SQL-only output.
       expect(AGENT_ACTIONS).toContain("generate");
-      expect(AGENT_ACTIONS).toEqual(["query", "exploreSchema", "executeAndExplain", "generate"]);
+      expect(AGENT_ACTIONS).toEqual(["general", "query", "exploreSchema", "executeAndExplain", "generate"]);
     });
   });
 });

apps/desktop/src/lib/ai/ai.ts

@@ -32,20 +32,20 @@ function dbLabel(dbType: DatabaseType): string {
   return labels[dbType] || dbType;
 }
 
-export type AiAction = "generate" | "explain" | "optimize" | "fix" | "convert" | "sampleData" | "query" | "exploreSchema" | "executeAndExplain";
+export type AiAction = "general" | "generate" | "explain" | "optimize" | "fix" | "convert" | "sampleData" | "query" | "exploreSchema" | "executeAndExplain";
 export type AiAssistantMode = "ask" | "agent";
 
 /** Actions shown in the Ask mode menu: SQL-producing, never auto-run. */
-export const ASK_ACTIONS: AiAction[] = ["generate", "explain", "optimize", "fix", "convert", "sampleData"];
+export const ASK_ACTIONS: AiAction[] = ["general", "generate", "explain", "optimize", "fix", "convert", "sampleData"];
 
 /**
  * Actions shown in the Agent mode menu: task-oriented, drive tool use.
  * `generate` is shared with Ask so users can still request SQL-only output without execution.
  */
-export const AGENT_ACTIONS: AiAction[] = ["query", "exploreSchema", "executeAndExplain", "generate"];
+export const AGENT_ACTIONS: AiAction[] = ["general", "query", "exploreSchema", "executeAndExplain", "generate"];
 
-export function defaultActionForMode(mode: AiAssistantMode): AiAction {
-  return mode === "agent" ? "query" : "generate";
+export function defaultActionForMode(_mode: AiAssistantMode): AiAction {
+  return "general";
 }
 
 export function isValidActionForMode(action: AiAction, mode: AiAssistantMode): boolean {

apps/desktop/src/lib/ai/aiSkills.ts

@@ -25,6 +25,28 @@ export interface AiSkillDefinition {
 }
 
 export const AI_SKILL_DEFINITIONS: AiSkillDefinition[] = [
+  {
+    id: "general",
+    action: "general",
+    title: {
+      en: "General",
+      zh: "通用问答",
+    },
+    riskPolicy: "readonly",
+    contextNeeds: [],
+    userInstruction: {
+      en: "Answer the user's question directly and naturally. Use your general knowledge and the database schema context when relevant.",
+      zh: "直接、自然地回答用户的问题。使用你的通用知识，涉及数据库时可参考 Schema 上下文。",
+    },
+    systemRules: {
+      en: ["Answer naturally and helpfully. Adapt to the user's intent — whether that's a greeting, a conceptual question, or a database-related inquiry."],
+      zh: ["自然、有帮助地回答。根据用户意图灵活应对——无论是问候、概念性问题还是数据库相关咨询。"],
+    },
+    outputContract: {
+      en: ["Provide a clear, helpful answer adapted to the user's question."],
+      zh: ["根据用户问题提供清晰、有帮助的回答。"],
+    },
+  },
   {
     id: "generate_sql",
     action: "generate",