feat(ai): 阶段 2 Ask|Agent 共用 aitools Runtime 真查库

- 侧栏 Ask|Agent 分段；Ask 仍走 /api/ai/chat，Agent 走 /api/ai/agent
- RunAgent 多轮 tool call → 进程内 aitools（与 MCP 同源只读/白名单/审计）
- 回复下步骤时间线；openai-chat tools（DeepSeek）；agent-accept 冒烟

server/cmd/opsxdb-mcp/main.go

@@ -33,17 +33,10 @@ func main() {
 		server.WithToolCapabilities(true),
 	)
 
-	register := func(name, desc string, props map[string]any, required []string) {
-		schema := map[string]any{
-			"type":       "object",
-			"properties": props,
-		}
-		if len(required) > 0 {
-			schema["required"] = required
-		}
-		raw, _ := json.Marshal(schema)
-		t := mcp.NewToolWithRawSchema(name, desc, raw)
-		toolName := name
+	for _, spec := range aitools.ToolSpecs() {
+		raw, _ := json.Marshal(spec.InputSchema())
+		t := mcp.NewToolWithRawSchema(spec.Name, spec.Description, raw)
+		toolName := spec.Name
 		s.AddTool(t, func(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 			args := req.GetArguments()
 			out, err := rt.Call(ctx, toolName, args)
@@ -54,54 +47,6 @@ func main() {
 		})
 	}
 
-	connID := map[string]any{"type": "string", "description": "Saved connection id from opsxdb_list_connections"}
-	database := map[string]any{"type": "string", "description": "Database / schema / Redis DB index"}
-
-	register(aitools.ToolListConnections,
-		"List whitelisted OpsxDB connections (id/name/driver/host/port/database; never passwords).",
-		map[string]any{}, nil)
-
-	register(aitools.ToolListDatabases,
-		"List databases for a connection.",
-		map[string]any{"connection_id": connID}, []string{"connection_id"})
-
-	register(aitools.ToolListTables,
-		"List tables/views (or engine equivalents) in a database.",
-		map[string]any{"connection_id": connID, "database": database}, []string{"connection_id"})
-
-	register(aitools.ToolDescribeTable,
-		"Describe columns and metadata for a table.",
-		map[string]any{
-			"connection_id": connID,
-			"database":      database,
-			"table":         map[string]any{"type": "string", "description": "Table name"},
-		}, []string{"connection_id", "table"})
-
-	register(aitools.ToolGetSchemaContext,
-		"Compact schema text for LLM context (capped ~4k chars).",
-		map[string]any{
-			"connection_id": connID,
-			"database":      database,
-			"max_tables":    map[string]any{"type": "integer", "description": "Max tables to include (default 40)"},
-		}, []string{"connection_id"})
-
-	register(aitools.ToolExecuteQuery,
-		"Execute a READ-ONLY SQL query (SELECT/SHOW/EXPLAIN/WITH…SELECT). Writes and DDL are rejected in P0. Default limit 100, max 500.",
-		map[string]any{
-			"connection_id": connID,
-			"sql":           map[string]any{"type": "string", "description": "Read-only SQL"},
-			"database":      database,
-			"limit":         map[string]any{"type": "integer", "description": "Row limit (default 100, max 500)"},
-		}, []string{"connection_id", "sql"})
-
-	register(aitools.ToolExecuteRedisCommand,
-		"Execute a READ-ONLY Redis command (GET/SCAN/TYPE/TTL/…). FLUSH*/KEYS and writes are rejected in P0.",
-		map[string]any{
-			"connection_id": connID,
-			"command":       map[string]any{"type": "string", "description": "Single Redis command line"},
-			"database":      database,
-		}, []string{"connection_id", "command"})
-
 	if err := server.ServeStdio(s); err != nil {
 		fmt.Fprintf(os.Stderr, "opsxdb-mcp: %v\n", err)
 		os.Exit(1)