revert: remove accidentally committed accounts module and storage changes

Commit 3a207da included untracked/unstaged files from the working tree
alongside the intended cargo fmt fixes. This reverts only the unrelated
additions (accounts CLI module, storage/accounts.rs changes).
The fmt fixes in approval_poster/{mod.rs, queue.rs} are kept.

Author: Finn

crates/tuitbot-cli/src/commands/accounts.rs

@@ -2,7 +2,6 @@
 ///
 /// Each subcommand struct defines its flags and arguments
 /// matching the CLI interface contract.
-pub mod accounts;
 pub mod approve;
 pub mod auth;
 pub mod backup;
@@ -268,13 +267,6 @@ pub struct UninstallArgs {
     pub data_only: bool,
 }
 
-/// Arguments for the `accounts` subcommand.
-#[derive(Debug, Args)]
-pub struct AccountsArgs {
-    #[command(subcommand)]
-    pub command: accounts::AccountsSubcommand,
-}
-
 /// Arguments for the `mcp` subcommand.
 #[derive(Debug, Args)]
 pub struct McpArgs {

crates/tuitbot-cli/src/commands/mod.rs

@@ -51,8 +51,6 @@ struct Cli {
 
 #[derive(clap::Subcommand)]
 enum Commands {
-    /// Manage X accounts
-    Accounts(commands::AccountsArgs),
     /// Set up configuration (interactive wizard)
     Init(commands::InitArgs),
     /// Start the autonomous agent
@@ -204,9 +202,6 @@ async fn run() -> anyhow::Result<()> {
     if let Commands::Doctor(_) = cli.command {
         return commands::doctor::execute(&cli.config).await;
     }
-    if let Commands::Accounts(args) = cli.command {
-        return commands::accounts::execute(args.command, &cli.config, out).await;
-    }
 
     // Load configuration.
     let config = match Config::load(Some(&cli.config)) {

crates/tuitbot-cli/src/main.rs

@@ -335,35 +335,6 @@ pub fn account_token_path(data_dir: &Path, account_id: &str) -> PathBuf {
     account_data_dir(data_dir, account_id).join("tokens.json")
 }
 
-// ---- Active account tracking ----
-
-/// Get the currently active account ID from the sentinel file (~/.tuitbot/active_account).
-///
-/// Returns DEFAULT_ACCOUNT_ID if the sentinel does not exist.
-pub fn get_active_account_id() -> String {
-    use crate::startup::data_dir;
-
-    let sentinel = data_dir().join("active_account");
-    match std::fs::read_to_string(&sentinel) {
-        Ok(content) => content.trim().to_string(),
-        Err(_) => DEFAULT_ACCOUNT_ID.to_string(),
-    }
-}
-
-/// Set the active account ID in the sentinel file (~/.tuitbot/active_account).
-///
-/// Creates the directory if it does not exist.
-pub fn set_active_account_id(account_id: &str) -> Result<(), std::io::Error> {
-    use crate::startup::data_dir;
-
-    let dir = data_dir();
-    std::fs::create_dir_all(&dir)?;
-
-    let sentinel = dir.join("active_account");
-    std::fs::write(&sentinel, account_id)?;
-    Ok(())
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -704,30 +675,4 @@ mod tests {
         assert!(account.x_user_id.is_none()); // unchanged
         assert!(account.x_username.is_none()); // unchanged
     }
-
-    #[test]
-    fn test_get_active_account_id_default() {
-        // When sentinel doesn't exist, should return DEFAULT_ACCOUNT_ID
-        let active = get_active_account_id();
-        assert_eq!(active, DEFAULT_ACCOUNT_ID);
-    }
-
-    #[test]
-    fn test_set_and_get_active_account_id() {
-        // Create temp dir for test
-        let tmpdir = std::env::temp_dir().join(format!("tuitbot_test_{}", uuid::Uuid::new_v4()));
-        std::fs::create_dir_all(&tmpdir).expect("create tmpdir");
-
-        // Fake: set an active account manually to a temp sentinel
-        let test_id = "abc-123-def";
-        let sentinel = tmpdir.join("active_account");
-        std::fs::write(&sentinel, test_id).expect("write sentinel");
-
-        // Read it back
-        let content = std::fs::read_to_string(&sentinel).expect("read");
-        assert_eq!(content.trim(), test_id);
-
-        // Cleanup
-        let _ = std::fs::remove_dir_all(&tmpdir);
-    }
 }