chore: remove datasets command

Removing the datasets CLI surface for now. Deletes datasets.rs entirely
and strips the Datasets variant from Commands, DatasetsCommands enum,
the dispatch block in main.rs, and the stale cross-reference in the
databases error message.

Author: eddietejeda

src/command.rs

@@ -8,23 +8,6 @@ pub enum Commands {
         command: Option<AuthCommands>,
     },
 
-    /// Derived views — virtual SQL tables built from queries over your data
-    Datasets {
-        /// Dataset ID to show details
-        id: Option<String>,
-
-        /// Workspace ID (defaults to first workspace from login)
-        #[arg(long, short = 'w', global = true)]
-        workspace_id: Option<String>,
-
-        /// Output format (used with dataset ID)
-        #[arg(long = "output", short = 'o', default_value = "table", value_parser = ["table", "json", "yaml"])]
-        output: String,
-
-        #[command(subcommand)]
-        command: Option<DatasetsCommands>,
-    },
-
     /// Execute a SQL query, or check status of a running query
     Query {
         /// SQL query string (omit when using a subcommand)
@@ -444,75 +427,6 @@ pub enum JobsCommands {
     },
 }
 
-#[derive(Subcommand)]
-pub enum DatasetsCommands {
-    /// List all datasets in a workspace
-    List {
-        /// Maximum number of results (default: 100, max: 1000)
-        #[arg(long)]
-        limit: Option<u32>,
-
-        /// Pagination offset
-        #[arg(long)]
-        offset: Option<u32>,
-
-        /// Output format
-        #[arg(long = "output", short = 'o', default_value = "table", value_parser = ["table", "json", "yaml"])]
-        output: String,
-    },
-
-    /// Create a derived view from a SQL query or saved query
-    Create {
-        /// SQL table name the dataset is addressable as (e.g. my_view)
-        #[arg(long)]
-        name: String,
-
-        /// Human-readable display label
-        #[arg(long)]
-        description: Option<String>,
-
-        /// SQL query to create the dataset from
-        #[arg(long, conflicts_with = "query_id", required_unless_present = "query_id")]
-        sql: Option<String>,
-
-        /// Saved query ID to create the dataset from
-        #[arg(long, conflicts_with = "sql", required_unless_present = "sql")]
-        query_id: Option<String>,
-
-        /// Output format
-        #[arg(long = "output", short = 'o', default_value = "table", value_parser = ["table", "json", "yaml"])]
-        output: String,
-    },
-
-    /// Update a dataset's description and/or name
-    Update {
-        /// Dataset ID
-        id: String,
-
-        /// New display label
-        #[arg(long)]
-        description: Option<String>,
-
-        /// New SQL table name (must be a valid identifier)
-        #[arg(long)]
-        name: Option<String>,
-
-        /// Output format
-        #[arg(long = "output", short = 'o', default_value = "table", value_parser = ["table", "json", "yaml"])]
-        output: String,
-    },
-
-    /// Refresh a dataset by re-running its source (URL fetch or saved query) and creating a new version
-    Refresh {
-        /// Dataset ID
-        id: String,
-
-        /// Submit as a background job
-        #[arg(long)]
-        r#async: bool,
-    },
-}
-
 #[derive(Subcommand)]
 pub enum WorkspaceCommands {
     /// List all workspaces

src/databases.rs

@@ -231,7 +231,7 @@ fn upload_parquet_file(api: &ApiClient, path: &str) -> String {
     if !is_parquet_path(path) {
         eprintln!(
             "error: managed table loads require a parquet file (got '{}'). \
-             Convert your data to parquet or use `hotdata datasets create` for CSV/JSON.",
+             Convert your data to parquet before loading.",
             path
         );
         std::process::exit(1);