//! Main setup wizard orchestration.
//!
//! The wizard guides users through:
//! 1. Database connection
//! 2. Security (secrets master key)
//! 3. Inference provider (NEAR AI, Anthropic, OpenAI, Ollama, OpenAI-compatible)
//! 4. Model selection
//! 5. Embeddings
//! 6. Channel configuration
//! 7. Extensions (tool installation from registry)
//! 8. Docker sandbox
//! 9. Heartbeat (background tasks)

use std::collections::{HashMap, HashSet};
use std::sync::Arc;

#[cfg(feature = "postgres")]
use deadpool_postgres::Config as PoolConfig;
use secrecy::{ExposeSecret, SecretString};

use crate::bootstrap::ironclaw_base_dir;
use crate::channels::wasm::{
    ChannelCapabilitiesFile, available_channel_names, install_bundled_channel,
};
use crate::config::OAUTH_PLACEHOLDER;
use crate::llm::models::{
    build_nearai_model_fetch_config, fetch_anthropic_models, fetch_ollama_models,
    fetch_openai_compatible_models, fetch_openai_models,
};
#[cfg(test)]
use crate::llm::models::{is_openai_chat_model, sort_openai_models};
use crate::llm::{SessionConfig, SessionManager};
use crate::secrets::{SecretsCrypto, SecretsStore};
use crate::settings::{KeySource, Settings};
use crate::setup::channels::{
    SecretsContext, setup_http, setup_signal, setup_tunnel, setup_wasm_channel,
};
use crate::setup::prompts::{
    confirm, input, optional_input, print_banner, print_error, print_header, print_info,
    print_step, print_success, secret_input, select_many, select_one,
};

// unused const, keep commented for clarity / future use
// const CHANNEL_INDEX_CLI: usize = 0;
const CHANNEL_INDEX_HTTP: usize = 1;
const CHANNEL_INDEX_SIGNAL: usize = 2;

/// Setup wizard error.
#[derive(Debug, thiserror::Error)]
pub enum SetupError {
    #[error("I/O error: {0}")]
    Io(#[from] std::io::Error),

    #[error("Authentication error: {0}")]
    Auth(String),

    #[error("Database error: {0}")]
    Database(String),

    #[error("Configuration error: {0}")]
    Config(String),

    #[error("Channel setup error: {0}")]
    Channel(String),

    #[error("User cancelled")]
    Cancelled,
}

impl From<crate::setup::channels::ChannelSetupError> for SetupError {
    fn from(e: crate::setup::channels::ChannelSetupError) -> Self {
        SetupError::Channel(e.to_string())
    }
}

/// Setup wizard configuration.
#[derive(Debug, Clone, Default)]
pub struct SetupConfig {
    /// Skip authentication step (use existing session).
    pub skip_auth: bool,
    /// Only reconfigure channels.
    pub channels_only: bool,
    /// Only reconfigure LLM provider and model selection.
    pub provider_only: bool,
    /// Quick setup: auto-defaults everything except LLM provider and model.
    pub quick: bool,
}

/// Interactive setup wizard for IronClaw.
pub struct SetupWizard {
    config: SetupConfig,
    settings: Settings,
    owner_id: String,
    session_manager: Option<Arc<SessionManager>>,
    /// Database pool (created during setup, postgres only).
    #[cfg(feature = "postgres")]
    db_pool: Option<deadpool_postgres::Pool>,
    /// libSQL backend (created during setup, libsql only).
    #[cfg(feature = "libsql")]
    db_backend: Option<crate::db::libsql::LibSqlBackend>,
    /// Secrets crypto (created during setup).
    secrets_crypto: Option<Arc<SecretsCrypto>>,
    /// Cached API key from provider setup (used by model fetcher without env mutation).
    llm_api_key: Option<SecretString>,
}

impl SetupWizard {
    fn owner_id(&self) -> &str {
        &self.owner_id
    }

    fn fallback_with_default_owner(
        config: SetupConfig,
        settings: Settings,
        error: &crate::error::ConfigError,
    ) -> Self {
        tracing::warn!("Falling back to default owner scope for setup wizard: {error}");
        Self {
            config,
            settings,
            owner_id: "default".to_string(),
            session_manager: None,
            #[cfg(feature = "postgres")]
            db_pool: None,
            #[cfg(feature = "libsql")]
            db_backend: None,
            secrets_crypto: None,
            llm_api_key: None,
        }
    }

    fn from_bootstrap_settings(
        config: SetupConfig,
        settings: Settings,
    ) -> Result<Self, crate::error::ConfigError> {
        let owner_id = crate::config::resolve_owner_id(&settings)?;
        Ok(Self {
            config,
            settings,
            owner_id,
            session_manager: None,
            #[cfg(feature = "postgres")]
            db_pool: None,
            #[cfg(feature = "libsql")]
            db_backend: None,
            secrets_crypto: None,
            llm_api_key: None,
        })
    }

    /// Create a new setup wizard.
    pub fn new() -> Self {
        let settings = crate::config::load_bootstrap_settings(None).unwrap_or_default();
        Self::from_bootstrap_settings(SetupConfig::default(), settings.clone()).unwrap_or_else(
            |e| Self::fallback_with_default_owner(SetupConfig::default(), settings, &e),
        )
    }

    /// Create a wizard with custom configuration.
    pub fn with_config(config: SetupConfig) -> Self {
        let settings = crate::config::load_bootstrap_settings(None).unwrap_or_default();
        Self::from_bootstrap_settings(config.clone(), settings.clone())
            .unwrap_or_else(|e| Self::fallback_with_default_owner(config, settings, &e))
    }

    /// Create a wizard with custom configuration and bootstrap TOML overlay.
    pub fn try_with_config_and_toml(
        config: SetupConfig,
        toml_path: Option<&std::path::Path>,
    ) -> Result<Self, crate::error::ConfigError> {
        let settings = crate::config::load_bootstrap_settings(toml_path)?;
        Self::from_bootstrap_settings(config, settings)
    }

    /// Set the session manager (for reusing existing auth).
    pub fn with_session(mut self, session: Arc<SessionManager>) -> Self {
        self.session_manager = Some(session);
        self
    }

    /// Run the setup wizard.
    ///
    /// Settings are persisted incrementally after each successful step so
    /// that progress is not lost if a later step fails. On re-run, existing
    /// settings are loaded from the database after Step 1 establishes a
    /// connection, so users don't have to re-enter everything.
    pub async fn run(&mut self) -> Result<(), SetupError> {
        print_banner();
        print_header("IronClaw Setup Wizard");

        if self.config.channels_only {
            // Channels-only mode: reconnect to existing DB and load settings
            // before running the channel step, so secrets and save work.
            self.reconnect_existing_db().await?;
            print_step(1, 1, "Channel Configuration");
            self.step_channels().await?;
        } else if self.config.provider_only {
            // Provider-only mode: reconnect to existing DB, then run just
            // inference provider + model selection steps.
            self.reconnect_existing_db().await?;
            print_step(1, 2, "Inference Provider");
            self.step_inference_provider().await?;
            self.persist_after_step().await;
            print_step(2, 2, "Model Selection");
            self.step_model_selection().await?;
            self.persist_after_step().await;
        } else if self.config.quick {
            // Quick mode: auto-default database + security, only ask for
            // LLM provider + model. Designed for first-run experience.
            self.auto_setup_database().await?;

            // Load existing settings from DB (if any prior partial run)
            let step1_settings = self.settings.clone();
            self.try_load_existing_settings().await;
            self.settings.merge_from(&step1_settings);

            self.auto_setup_security().await?;
            self.persist_after_step().await;

            print_step(1, 2, "Inference Provider");
            self.step_inference_provider().await?;
            self.persist_after_step().await;

            print_step(2, 2, "Model Selection");
            self.step_model_selection().await?;
            self.persist_after_step().await;
        } else {
            let total_steps = 9;

            // Step 1: Database
            print_step(1, total_steps, "Database Connection");
            self.step_database().await?;

            // After establishing a DB connection, load any previously saved
            // settings so we recover progress from prior partial runs.
            // We must load BEFORE persisting, otherwise persist_after_step()
            // would overwrite prior settings with defaults.
            // Save Step 1 choices first so they aren't clobbered by stale
            // DB values (merge_from only applies non-default fields).
            let step1_settings = self.settings.clone();
            self.try_load_existing_settings().await;
            self.settings.merge_from(&step1_settings);

            self.persist_after_step().await;

            // Step 2: Security
            print_step(2, total_steps, "Security");
            self.step_security().await?;
            self.persist_after_step().await;

            // Step 3: Inference provider selection (unless skipped)
            if !self.config.skip_auth {
                print_step(3, total_steps, "Inference Provider");
                self.step_inference_provider().await?;
            } else {
                print_info("Skipping inference provider setup (using existing config)");
            }
            self.persist_after_step().await;

            // Step 4: Model selection
            print_step(4, total_steps, "Model Selection");
            self.step_model_selection().await?;
            self.persist_after_step().await;

            // Step 5: Embeddings
            print_step(5, total_steps, "Embeddings (Semantic Search)");
            self.step_embeddings()?;
            self.persist_after_step().await;

            // Step 6: Channel configuration
            print_step(6, total_steps, "Channel Configuration");
            self.step_channels().await?;
            self.persist_after_step().await;

            // Step 7: Extensions (tools)
            print_step(7, total_steps, "Extensions");
            self.step_extensions().await?;

            // Step 8: Docker Sandbox
            print_step(8, total_steps, "Docker Sandbox");
            self.step_docker_sandbox().await?;
            self.persist_after_step().await;

            // Step 9: Heartbeat
            print_step(9, total_steps, "Background Tasks");
            self.step_heartbeat()?;
            self.persist_after_step().await;
        }

        // Save settings and print summary
        self.save_and_summarize().await?;

        Ok(())
    }

    /// Reconnect to the existing database and load settings.
    ///
    /// Used by channels-only mode (and future single-step modes) so that
    /// `init_secrets_context()` and `save_and_summarize()` have a live
    /// database connection and the wizard's `self.settings` reflects the
    /// previously saved configuration.
    async fn reconnect_existing_db(&mut self) -> Result<(), SetupError> {
        // Determine backend from env (set by bootstrap .env loaded in main).
        let backend = std::env::var("DATABASE_BACKEND").unwrap_or_else(|_| "postgres".to_string());

        // Try libsql first if that's the configured backend.
        #[cfg(feature = "libsql")]
        if backend == "libsql" || backend == "turso" || backend == "sqlite" {
            return self.reconnect_libsql().await;
        }

        // Try postgres (either explicitly configured or as default).
        #[cfg(feature = "postgres")]
        {
            let _ = &backend;
            return self.reconnect_postgres().await;
        }

        #[allow(unreachable_code)]
        Err(SetupError::Database(
            "No database configured. Run full setup first (ironclaw onboard).".to_string(),
        ))
    }

    /// Reconnect to an existing PostgreSQL database and load settings.
    #[cfg(feature = "postgres")]
    async fn reconnect_postgres(&mut self) -> Result<(), SetupError> {
        let url = std::env::var("DATABASE_URL").map_err(|_| {
            SetupError::Database(
                "DATABASE_URL not set. Run full setup first (ironclaw onboard).".to_string(),
            )
        })?;

        self.test_database_connection_postgres(&url).await?;
        self.settings.database_backend = Some("postgres".to_string());
        self.settings.database_url = Some(url.clone());

        // Load existing settings from DB, then restore connection fields that
        // may not be persisted in the settings map.
        if let Some(ref pool) = self.db_pool {
            let store = crate::history::Store::from_pool(pool.clone());
            if let Ok(map) = store.get_all_settings(self.owner_id()).await {
                self.settings = Settings::from_db_map(&map);
                self.settings.database_backend = Some("postgres".to_string());
                self.settings.database_url = Some(url);
            }
        }

        Ok(())
    }

    /// Reconnect to an existing libSQL database and load settings.
    #[cfg(feature = "libsql")]
    async fn reconnect_libsql(&mut self) -> Result<(), SetupError> {
        let path = std::env::var("LIBSQL_PATH").unwrap_or_else(|_| {
            crate::config::default_libsql_path()
                .to_string_lossy()
                .to_string()
        });
        let turso_url = std::env::var("LIBSQL_URL").ok();
        let turso_token = std::env::var("LIBSQL_AUTH_TOKEN").ok();

        self.test_database_connection_libsql(&path, turso_url.as_deref(), turso_token.as_deref())
            .await?;

        self.settings.database_backend = Some("libsql".to_string());
        self.settings.libsql_path = Some(path.clone());
        if let Some(ref url) = turso_url {
            self.settings.libsql_url = Some(url.clone());
        }

        // Load existing settings from DB, then restore connection fields that
        // may not be persisted in the settings map.
        if let Some(ref db) = self.db_backend {
            use crate::db::SettingsStore as _;
            if let Ok(map) = db.get_all_settings(self.owner_id()).await {
                self.settings = Settings::from_db_map(&map);
                self.settings.database_backend = Some("libsql".to_string());
                self.settings.libsql_path = Some(path);
                if let Some(url) = turso_url {
                    self.settings.libsql_url = Some(url);
                }
            }
        }

        Ok(())
    }

    /// Step 1: Database connection.
    async fn step_database(&mut self) -> Result<(), SetupError> {
        // When both features are compiled, let the user choose.
        // If DATABASE_BACKEND is already set in the environment, respect it.
        #[cfg(all(feature = "postgres", feature = "libsql"))]
        {
            // Check if a backend is already pinned via env var
            let env_backend = std::env::var("DATABASE_BACKEND").ok();

            if let Some(ref backend) = env_backend {
                if backend == "libsql" || backend == "turso" || backend == "sqlite" {
                    return self.step_database_libsql().await;
                }
                if backend != "postgres" && backend != "postgresql" {
                    print_info(&format!(
                        "Unknown DATABASE_BACKEND '{}', defaulting to PostgreSQL",
                        backend
                    ));
                }
                return self.step_database_postgres().await;
            }

            // Interactive selection
            let pre_selected = self.settings.database_backend.as_deref().map(|b| match b {
                "libsql" | "turso" | "sqlite" => 1,
                _ => 0,
            });

            print_info("Which database backend would you like to use?");
            println!();

            let options = &[
                "PostgreSQL  - production-grade, requires a running server",
                "libSQL      - embedded SQLite, zero dependencies, optional Turso cloud sync",
            ];
            let choice =
                select_one("Select a database backend:", options).map_err(SetupError::Io)?;

            // If the user picked something different from what was pre-selected, clear
            // stale connection settings so the next step starts fresh.
            if let Some(prev) = pre_selected
                && prev != choice
            {
                self.settings.database_url = None;
                self.settings.libsql_path = None;
                self.settings.libsql_url = None;
            }

            match choice {
                1 => return self.step_database_libsql().await,
                _ => return self.step_database_postgres().await,
            }
        }

        #[cfg(all(feature = "postgres", not(feature = "libsql")))]
        {
            return self.step_database_postgres().await;
        }

        #[cfg(all(feature = "libsql", not(feature = "postgres")))]
        {
            return self.step_database_libsql().await;
        }
    }

    /// Step 1 (postgres): Database connection via PostgreSQL URL.
    #[cfg(feature = "postgres")]
    async fn step_database_postgres(&mut self) -> Result<(), SetupError> {
        self.settings.database_backend = Some("postgres".to_string());

        let existing_url = std::env::var("DATABASE_URL")
            .ok()
            .or_else(|| self.settings.database_url.clone());

        if let Some(ref url) = existing_url {
            let display_url = mask_password_in_url(url);
            print_info(&format!("Existing database URL: {}", display_url));

            if confirm("Use this database?", true).map_err(SetupError::Io)? {
                if let Err(e) = self.test_database_connection_postgres(url).await {
                    print_error(&format!("Connection failed: {}", e));
                    print_info("Let's configure a new database URL.");
                } else {
                    print_success("Database connection successful");
                    self.settings.database_url = Some(url.clone());
                    return Ok(());
                }
            }
        }

        println!();
        print_info("Enter your PostgreSQL connection URL.");
        print_info("Format: postgres://user:password@host:port/database");
        println!();

        loop {
            let url = input("Database URL").map_err(SetupError::Io)?;

            if url.is_empty() {
                print_error("Database URL is required.");
                continue;
            }

            print_info("Testing connection...");
            match self.test_database_connection_postgres(&url).await {
                Ok(()) => {
                    print_success("Database connection successful");

                    if confirm("Run database migrations?", true).map_err(SetupError::Io)? {
                        self.run_migrations_postgres().await?;
                    }

                    self.settings.database_url = Some(url);
                    return Ok(());
                }
                Err(e) => {
                    print_error(&format!("Connection failed: {}", e));
                    if !confirm("Try again?", true).map_err(SetupError::Io)? {
                        return Err(SetupError::Database(
                            "Database connection failed".to_string(),
                        ));
                    }
                }
            }
        }
    }

    /// Step 1 (libsql): Database connection via local file or Turso remote replica.
    #[cfg(feature = "libsql")]
    async fn step_database_libsql(&mut self) -> Result<(), SetupError> {
        self.settings.database_backend = Some("libsql".to_string());

        let default_path = crate::config::default_libsql_path();
        let default_path_str = default_path.to_string_lossy().to_string();

        // Check for existing configuration
        let existing_path = std::env::var("LIBSQL_PATH")
            .ok()
            .or_else(|| self.settings.libsql_path.clone());

        if let Some(ref path) = existing_path {
            print_info(&format!("Existing database path: {}", path));
            if confirm("Use this database?", true).map_err(SetupError::Io)? {
                let turso_url = std::env::var("LIBSQL_URL")
                    .ok()
                    .or_else(|| self.settings.libsql_url.clone());
                let turso_token = std::env::var("LIBSQL_AUTH_TOKEN").ok();

                match self
                    .test_database_connection_libsql(
                        path,
                        turso_url.as_deref(),
                        turso_token.as_deref(),
                    )
                    .await
                {
                    Ok(()) => {
                        print_success("Database connection successful");
                        self.settings.libsql_path = Some(path.clone());
                        if let Some(url) = turso_url {
                            self.settings.libsql_url = Some(url);
                        }
                        return Ok(());
                    }
                    Err(e) => {
                        print_error(&format!("Connection failed: {}", e));
                        print_info("Let's configure a new database path.");
                    }
                }
            }
        }

        println!();
        print_info("IronClaw uses an embedded SQLite database (libSQL).");
        print_info("No external database server required.");
        println!();

        let path_input = optional_input(
            "Database file path",
            Some(&format!("default: {}", default_path_str)),
        )
        .map_err(SetupError::Io)?;

        let db_path = path_input.unwrap_or(default_path_str.clone());

        // Ask about Turso cloud sync
        println!();
        let use_turso =
            confirm("Enable Turso cloud sync (remote replica)?", false).map_err(SetupError::Io)?;

        let (turso_url, turso_token) = if use_turso {
            print_info("Enter your Turso database URL and auth token.");
            print_info("Format: libsql://your-db.turso.io");
            println!();

            let url = input("Turso URL").map_err(SetupError::Io)?;
            if url.is_empty() {
                print_error("Turso URL is required for cloud sync.");
                (None, None)
            } else {
                let token_secret = secret_input("Auth token").map_err(SetupError::Io)?;
                let token = token_secret.expose_secret().to_string();
                if token.is_empty() {
                    print_error("Auth token is required for cloud sync.");
                    (None, None)
                } else {
                    (Some(url), Some(token))
                }
            }
        } else {
            (None, None)
        };

        print_info("Testing connection...");
        match self
            .test_database_connection_libsql(&db_path, turso_url.as_deref(), turso_token.as_deref())
            .await
        {
            Ok(()) => {
                print_success("Database connection successful");

                // Always run migrations for libsql (they're idempotent)
                self.run_migrations_libsql().await?;

                self.settings.libsql_path = Some(db_path);
                if let Some(url) = turso_url {
                    self.settings.libsql_url = Some(url);
                }
                Ok(())
            }
            Err(e) => Err(SetupError::Database(format!("Connection failed: {}", e))),
        }
    }

    /// Test PostgreSQL connection and store the pool.
    ///
    /// After connecting, validates:
    /// 1. PostgreSQL version >= 15 (required for pgvector compatibility)
    /// 2. pgvector extension is available (required for embeddings/vector search)
    #[cfg(feature = "postgres")]
    async fn test_database_connection_postgres(&mut self, url: &str) -> Result<(), SetupError> {
        let mut cfg = PoolConfig::new();
        cfg.url = Some(url.to_string());
        cfg.pool = Some(deadpool_postgres::PoolConfig {
            max_size: 5,
            ..Default::default()
        });

        let pool = crate::db::tls::create_pool(&cfg, crate::config::SslMode::from_env())
            .map_err(|e| SetupError::Database(format!("Failed to create pool: {}", e)))?;

        let client = pool
            .get()
            .await
            .map_err(|e| SetupError::Database(format!("Failed to connect: {}", e)))?;

        // Check PostgreSQL server version (need 15+ for pgvector)
        let version_row = client
            .query_one("SHOW server_version", &[])
            .await
            .map_err(|e| SetupError::Database(format!("Failed to query server version: {}", e)))?;
        let version_str: &str = version_row.get(0);
        let major_version = version_str
            .split('.')
            .next()
            .and_then(|v| v.parse::<u32>().ok())
            .unwrap_or(0);

        const MIN_PG_MAJOR_VERSION: u32 = 15;

        if major_version < MIN_PG_MAJOR_VERSION {
            return Err(SetupError::Database(format!(
                "PostgreSQL {} detected. IronClaw requires PostgreSQL {} or later for pgvector support.\n\
                 Upgrade: https://www.postgresql.org/download/",
                version_str, MIN_PG_MAJOR_VERSION
            )));
        }

        // Check if pgvector extension is available
        let pgvector_row = client
            .query_opt(
                "SELECT 1 FROM pg_available_extensions WHERE name = 'vector'",
                &[],
            )
            .await
            .map_err(|e| {
                SetupError::Database(format!("Failed to check pgvector availability: {}", e))
            })?;

        if pgvector_row.is_none() {
            return Err(SetupError::Database(format!(
                "pgvector extension not found on your PostgreSQL server.\n\n\
                 Install it:\n  \
                 macOS:   brew install pgvector\n  \
                 Ubuntu:  apt install postgresql-{0}-pgvector\n  \
                 Docker:  use the pgvector/pgvector:pg{0} image\n  \
                 Source:  https://github.com/pgvector/pgvector#installation\n\n\
                 Then restart PostgreSQL and re-run: ironclaw onboard",
                major_version
            )));
        }

        self.db_pool = Some(pool);
        Ok(())
    }

    /// Test libSQL connection and store the backend.
    #[cfg(feature = "libsql")]
    async fn test_database_connection_libsql(
        &mut self,
        path: &str,
        turso_url: Option<&str>,
        turso_token: Option<&str>,
    ) -> Result<(), SetupError> {
        use crate::db::libsql::LibSqlBackend;
        use std::path::Path;

        let db_path = Path::new(path);

        let backend = if let (Some(url), Some(token)) = (turso_url, turso_token) {
            LibSqlBackend::new_remote_replica(db_path, url, token)
                .await
                .map_err(|e| SetupError::Database(format!("Failed to connect: {}", e)))?
        } else {
            LibSqlBackend::new_local(db_path)
                .await
                .map_err(|e| SetupError::Database(format!("Failed to open database: {}", e)))?
        };

        self.db_backend = Some(backend);
        Ok(())
    }

    /// Run PostgreSQL migrations.
    #[cfg(feature = "postgres")]
    async fn run_migrations_postgres(&self) -> Result<(), SetupError> {
        if let Some(ref pool) = self.db_pool {
            use refinery::embed_migrations;
            embed_migrations!("migrations");

            if !self.config.quick {
                print_info("Running migrations...");
            }
            tracing::debug!("Running PostgreSQL migrations...");

            let mut client = pool
                .get()
                .await
                .map_err(|e| SetupError::Database(format!("Pool error: {}", e)))?;

            migrations::runner()
                .run_async(&mut **client)
                .await
                .map_err(|e| SetupError::Database(format!("Migration failed: {}", e)))?;

            if !self.config.quick {
                print_success("Migrations applied");
            }
            tracing::debug!("PostgreSQL migrations applied");
        }
        Ok(())
    }

    /// Run libSQL migrations.
    #[cfg(feature = "libsql")]
    async fn run_migrations_libsql(&self) -> Result<(), SetupError> {
        if let Some(ref backend) = self.db_backend {
            use crate::db::Database;

            if !self.config.quick {
                print_info("Running migrations...");
            }
            tracing::debug!("Running libSQL migrations...");

            backend
                .run_migrations()
                .await
                .map_err(|e| SetupError::Database(format!("Migration failed: {}", e)))?;

            if !self.config.quick {
                print_success("Migrations applied");
            }
            tracing::debug!("libSQL migrations applied");
        }
        Ok(())
    }

    /// Step 2: Security (secrets master key).
    async fn step_security(&mut self) -> Result<(), SetupError> {
        // Check current configuration
        let env_key_exists = std::env::var("SECRETS_MASTER_KEY").is_ok();

        if env_key_exists {
            print_info("Secrets master key found in SECRETS_MASTER_KEY environment variable.");
            self.settings.secrets_master_key_source = KeySource::Env;
            print_success("Security configured (env var)");
            return Ok(());
        }

        // Try to retrieve existing key from keychain. We use get_master_key()
        // instead of has_master_key() so we can cache the key bytes and build
        // SecretsCrypto eagerly, avoiding redundant keychain accesses later
        // (each access triggers macOS system dialogs).
        print_info("Checking OS keychain for existing master key...");
        if let Ok(keychain_key_bytes) = crate::secrets::keychain::get_master_key().await {
            let key_hex: String = keychain_key_bytes
                .iter()
                .map(|b| format!("{:02x}", b))
                .collect();
            self.secrets_crypto = Some(Arc::new(
                SecretsCrypto::new(SecretString::from(key_hex))
                    .map_err(|e| SetupError::Config(e.to_string()))?,
            ));

            print_info("Existing master key found in OS keychain.");
            if confirm("Use existing keychain key?", true).map_err(SetupError::Io)? {
                self.settings.secrets_master_key_source = KeySource::Keychain;
                print_success("Security configured (keychain)");
                return Ok(());
            }
            // User declined the existing key; clear the cached crypto so a fresh
            // key can be generated below.
            self.secrets_crypto = None;
        }

        // Offer options
        println!();
        print_info("The secrets master key encrypts sensitive data like API tokens.");
        print_info("Choose where to store it:");
        println!();

        let options = [
            "OS Keychain (recommended for local installs)",
            "Environment variable (for CI/Docker)",
            "Skip (disable secrets features)",
        ];

        let choice = select_one("Select storage method:", &options).map_err(SetupError::Io)?;

        match choice {
            0 => {
                // Generate and store in keychain
                print_info("Generating master key...");
                let key = crate::secrets::keychain::generate_master_key();

                crate::secrets::keychain::store_master_key(&key)
                    .await
                    .map_err(|e| {
                        SetupError::Config(format!("Failed to store in keychain: {}", e))
                    })?;

                // Also create crypto instance
                let key_hex: String = key.iter().map(|b| format!("{:02x}", b)).collect();
                self.secrets_crypto = Some(Arc::new(
                    SecretsCrypto::new(SecretString::from(key_hex))
                        .map_err(|e| SetupError::Config(e.to_string()))?,
                ));

                self.settings.secrets_master_key_source = KeySource::Keychain;
                print_success("Master key generated and stored in OS keychain");
            }
            1 => {
                // Env var mode — generate key, init crypto, and persist to .env
                let key_hex = crate::secrets::keychain::generate_master_key_hex();

                // Initialize crypto so subsequent wizard steps (channel setup,
                // API key storage) can encrypt secrets immediately.
                self.secrets_crypto = Some(Arc::new(
                    SecretsCrypto::new(SecretString::from(key_hex.clone()))
                        .map_err(|e| SetupError::Config(e.to_string()))?,
                ));

                // Make visible to optional_env() for any subsequent config resolution.
                crate::config::inject_single_var("SECRETS_MASTER_KEY", &key_hex);

                // Store hex for write_bootstrap_env to persist to ~/.ironclaw/.env.
                self.settings.secrets_master_key_hex = Some(key_hex.clone());

                println!();
                print_info("Master key generated and will be saved to ~/.ironclaw/.env");
                println!();
                println!("  SECRETS_MASTER_KEY={}", key_hex);
                println!();
                print_info("You can also copy this to another .env file or CI secrets.");

                self.settings.secrets_master_key_source = KeySource::Env;
                print_success("Configured for environment variable");
            }
            _ => {
                self.settings.secrets_master_key_source = KeySource::None;
                print_info("Secrets features disabled. Channel tokens must be set via env vars.");
            }
        }

        Ok(())
    }

    /// Auto-setup database with zero prompts (quick mode).
    ///
    /// Uses existing env vars if present, otherwise defaults to libsql at the
    /// standard path. Falls back to the interactive `step_database()` only when
    /// just the postgres feature is compiled (can't auto-default postgres).
    async fn auto_setup_database(&mut self) -> Result<(), SetupError> {
        // If DATABASE_URL or LIBSQL_PATH already set, respect existing config
        #[cfg(feature = "postgres")]
        let env_backend = std::env::var("DATABASE_BACKEND").ok();

        #[cfg(feature = "postgres")]
        if let Some(ref backend) = env_backend
            && (backend == "postgres" || backend == "postgresql")
        {
            if let Ok(url) = std::env::var("DATABASE_URL") {
                print_info("Using existing PostgreSQL configuration");
                self.settings.database_backend = Some("postgres".to_string());
                self.settings.database_url = Some(url);
                return Ok(());
            }
            // Postgres configured but no URL — fall through to interactive
            return self.step_database().await;
        }

        #[cfg(feature = "postgres")]
        if let Ok(url) = std::env::var("DATABASE_URL") {
            print_info("Using existing PostgreSQL configuration");
            self.settings.database_backend = Some("postgres".to_string());
            self.settings.database_url = Some(url);
            return Ok(());
        }

        // Auto-default to libsql if the feature is compiled
        #[cfg(feature = "libsql")]
        {
            self.settings.database_backend = Some("libsql".to_string());

            let existing_path = std::env::var("LIBSQL_PATH")
                .ok()
                .or_else(|| self.settings.libsql_path.clone());

            let db_path = existing_path.unwrap_or_else(|| {
                crate::config::default_libsql_path()
                    .to_string_lossy()
                    .to_string()
            });

            let turso_url = std::env::var("LIBSQL_URL").ok();
            let turso_token = std::env::var("LIBSQL_AUTH_TOKEN").ok();

            self.test_database_connection_libsql(
                &db_path,
                turso_url.as_deref(),
                turso_token.as_deref(),
            )
            .await?;

            self.run_migrations_libsql().await?;

            self.settings.libsql_path = Some(db_path.clone());
            if let Some(url) = turso_url {
                self.settings.libsql_url = Some(url);
            }

            print_success(&format!("Using embedded database at {}", db_path));
            return Ok(());
        }

        // Only postgres feature compiled — can't auto-default, use interactive
        #[allow(unreachable_code)]
        {
            self.step_database().await
        }
    }

    /// Auto-setup security with zero prompts (quick mode).
    ///
    /// Silently configures the master key: uses existing env var or keychain
    /// key if available, otherwise generates and stores one automatically
    /// (keychain on macOS, env var fallback).
    async fn auto_setup_security(&mut self) -> Result<(), SetupError> {
        // Check env var first
        if std::env::var("SECRETS_MASTER_KEY").is_ok() {
            self.settings.secrets_master_key_source = KeySource::Env;
            print_success("Security configured (env var)");
            return Ok(());
        }

        // Try existing keychain key (no prompts — get_master_key may show
        // OS dialogs on macOS, but that's unavoidable for keychain access)
        if let Ok(keychain_key_bytes) = crate::secrets::keychain::get_master_key().await {
            let key_hex: String = keychain_key_bytes
                .iter()
                .map(|b| format!("{:02x}", b))
                .collect();
            self.secrets_crypto = Some(Arc::new(
                SecretsCrypto::new(SecretString::from(key_hex))
                    .map_err(|e| SetupError::Config(e.to_string()))?,
            ));
            self.settings.secrets_master_key_source = KeySource::Keychain;
            print_success("Security configured (keychain)");
            return Ok(());
        }

        // No existing key — generate one
        // Try keychain first (preferred on macOS)
        let key = crate::secrets::keychain::generate_master_key();
        if crate::secrets::keychain::store_master_key(&key)
            .await
            .is_ok()
        {
            let key_hex: String = key.iter().map(|b| format!("{:02x}", b)).collect();
            self.secrets_crypto = Some(Arc::new(
                SecretsCrypto::new(SecretString::from(key_hex))
                    .map_err(|e| SetupError::Config(e.to_string()))?,
            ));
            self.settings.secrets_master_key_source = KeySource::Keychain;
            print_success("Master key stored in OS keychain");
            return Ok(());
        }

        // Keychain unavailable — fall back to env var mode
        let key_hex = crate::secrets::keychain::generate_master_key_hex();
        self.secrets_crypto = Some(Arc::new(
            SecretsCrypto::new(SecretString::from(key_hex.clone()))
                .map_err(|e| SetupError::Config(e.to_string()))?,
        ));
        crate::config::inject_single_var("SECRETS_MASTER_KEY", &key_hex);
        self.settings.secrets_master_key_hex = Some(key_hex);
        self.settings.secrets_master_key_source = KeySource::Env;
        print_success("Master key stored in ~/.ironclaw/.env");
        Ok(())
    }

    /// Step 3: Inference provider selection.
    ///
    /// Uses the provider registry to dynamically build the selection menu.
    /// NearAI is always first (special auth), then all registry providers
    /// that have setup hints.
    async fn step_inference_provider(&mut self) -> Result<(), SetupError> {
        let registry = crate::llm::ProviderRegistry::load();

        // Show current provider if already configured
        if let Some(current) = self.settings.llm_backend.clone() {
            let display = if current == "nearai" {
                "NEAR AI".to_string()
            } else if let Some(def) = registry.find(&current) {
                def.setup
                    .as_ref()
                    .map(|s| s.display_name().to_string())
                    .unwrap_or_else(|| def.id.clone())
            } else {
                current.clone()
            };
            print_info(&format!("Current provider: {}", display));
            println!();

            let is_known =
                current == "nearai" || current == "bedrock" || registry.is_known(&current);

            if is_known && confirm("Keep current provider?", true).map_err(SetupError::Io)? {
                if current == "bedrock" {
                    // Keeping the existing Bedrock config — no need to re-run
                    // the full setup flow (region, auth, cross-region).
                    print_info("Keeping existing AWS Bedrock configuration.");
                    return Ok(());
                }
                return self.run_provider_setup(&current, &registry).await;
            }

            if !is_known {
                print_info(&format!(
                    "Unknown provider '{}', please select a supported provider.",
                    current
                ));
            }
        }

        print_info("Select your inference provider:");
        println!();

        // Build menu: NearAI first, then all registry providers with setup hints, then Bedrock
        let selectable = registry.selectable();
        let mut options: Vec<String> = Vec::with_capacity(2 + selectable.len());
        let mut provider_ids: Vec<String> = Vec::with_capacity(2 + selectable.len());

        options.push("NEAR AI          - multi-model access via NEAR account".to_string());
        provider_ids.push("nearai".to_string());

        for def in &selectable {
            let label = format!(
                "{:<17}- {}",
                def.setup
                    .as_ref()
                    .map(|s| s.display_name())
                    .unwrap_or(&def.id),
                def.description
            );
            options.push(label);
            provider_ids.push(def.id.clone());
        }

        // Bedrock is a special case (native AWS SDK, not registry-based)
        options.push("AWS Bedrock      - Claude & other models via AWS (IAM, SSO)".to_string());
        provider_ids.push("bedrock".to_string());

        let option_refs: Vec<&str> = options.iter().map(|s| s.as_str()).collect();
        let choice = select_one("Provider:", &option_refs).map_err(SetupError::Io)?;
        let selected_id = &provider_ids[choice];

        if selected_id == "bedrock" {
            self.setup_bedrock().await?;
        } else {
            self.run_provider_setup(selected_id, &registry).await?;
        }

        Ok(())
    }

    /// Run the setup flow for a specific provider.
    ///
    /// NearAI has its own special flow. Registry providers dispatch
    /// based on their `SetupHint` kind.
    async fn run_provider_setup(
        &mut self,
        provider_id: &str,
        registry: &crate::llm::ProviderRegistry,
    ) -> Result<(), SetupError> {
        if provider_id == "nearai" {
            return self.setup_nearai().await;
        }

        let def = registry
            .find(provider_id)
            .ok_or_else(|| SetupError::Config(format!("Unknown provider: {}", provider_id)))?;

        // Providers without a setup hint (e.g., user-defined providers configured
        // purely via env vars) skip credential setup and go to model selection.
        let Some(setup) = def.setup.as_ref() else {
            print_info(&format!(
                "Provider '{}' has no setup wizard. Configure via environment variables.",
                provider_id
            ));
            self.set_llm_backend_preserving_model(provider_id);
            return Ok(());
        };

        // Anthropic has a custom flow: API key or OAuth token from `claude login`.
        if provider_id == "anthropic" {
            return self.setup_anthropic().await;
        }

        match setup {
            crate::llm::registry::SetupHint::ApiKey {
                secret_name,
                key_url,
                display_name,
                ..
            } => {
                let env_var = def.api_key_env.as_deref().unwrap_or("LLM_API_KEY");
                let url = key_url.as_deref().unwrap_or("the provider's website");

                // Only store base URL for providers that resolve through
                // LLM_BASE_URL (openai_compatible, openrouter). Other providers
                // like groq/nvidia have their own base_url_env and don't need
                // this backward-compat setting.
                if def.base_url_env.as_deref() == Some("LLM_BASE_URL")
                    && let Some(ref base_url) = def.default_base_url
                {
                    self.settings.openai_compatible_base_url = Some(base_url.clone());
                }

                self.setup_api_key_provider(
                    &def.id,
                    env_var,
                    secret_name,
                    &format!("{display_name} API key"),
                    url,
                    Some(display_name),
                )
                .await?;
            }
            crate::llm::registry::SetupHint::Ollama { .. } => {
                self.setup_ollama_generic(def)?;
            }
            crate::llm::registry::SetupHint::OpenAiCompatible {
                secret_name,
                display_name,
                ..
            } => {
                self.setup_openai_compatible_generic(&def.id, secret_name, display_name)
                    .await?;
            }
        }

        Ok(())
    }

    /// Update the selected LLM backend while preserving the current model when
    /// the backend did not actually change.
    fn set_llm_backend_preserving_model(&mut self, backend: &str) {
        let backend_changed = self.settings.llm_backend.as_deref() != Some(backend);
        self.settings.llm_backend = Some(backend.to_string());
        if backend_changed {
            self.settings.selected_model = None;
        }
    }

    /// NEAR AI provider setup (extracted from the old step_authentication).
    async fn setup_nearai(&mut self) -> Result<(), SetupError> {
        self.set_llm_backend_preserving_model("nearai");

        // Check if we already have a session
        if let Some(ref session) = self.session_manager
            && session.has_token().await
        {
            print_info("Existing session found. Validating...");
            match session.ensure_authenticated().await {
                Ok(()) => {
                    print_success("NEAR AI session valid");
                    return Ok(());
                }
                Err(e) => {
                    print_info(&format!("Session invalid: {}. Re-authenticating...", e));
                }
            }
        }

        // Create session manager if we don't have one
        let session = if let Some(ref s) = self.session_manager {
            Arc::clone(s)
        } else {
            let config = SessionConfig {
                session_path: crate::config::llm::default_session_path(),
                ..SessionConfig::default()
            };
            Arc::new(SessionManager::new(config))
        };

        // Trigger authentication flow
        session
            .ensure_authenticated()
            .await
            .map_err(|e| SetupError::Auth(e.to_string()))?;

        self.session_manager = Some(session);

        // Persist session token to the database so the runtime can load it
        // via `attach_store()` → `load_session_from_db()` without the
        // backwards-compat fallback. The session manager saved to disk but
        // doesn't have a DB store attached during onboarding.
        self.persist_session_to_db().await;

        // If the user chose the API key path, NEARAI_API_KEY is now set
        // in the runtime env overlay. Persist it to the encrypted secrets
        // store so inject_llm_keys_from_secrets() can load it on future runs.
        if let Some(api_key) = crate::config::helpers::env_or_override("NEARAI_API_KEY")
            && !api_key.is_empty()
            && let Ok(ctx) = self.init_secrets_context().await
        {
            let key = SecretString::from(api_key);
            if let Err(e) = ctx.save_secret("llm_nearai_api_key", &key).await {
                tracing::warn!("Failed to persist NEARAI_API_KEY to secrets: {}", e);
            }
        }

        print_success("NEAR AI configured");
        Ok(())
    }

    /// Anthropic provider setup: API key or OAuth token from `claude login`.
    async fn setup_anthropic(&mut self) -> Result<(), SetupError> {
        let options = &["Direct API Key", "OAuth Token (from `claude login`)"];
        let choice = select_one("How do you want to authenticate with Anthropic?", options)
            .map_err(SetupError::Io)?;

        if choice == 0 {
            // Standard API key flow
            self.setup_api_key_provider(
                "anthropic",
                "ANTHROPIC_API_KEY",
                "llm_anthropic_api_key",
                "Anthropic API key",
                "https://console.anthropic.com/settings/keys",
                None,
            )
            .await
        } else {
            // OAuth token flow
            self.setup_anthropic_oauth().await
        }
    }

    /// Anthropic OAuth setup: extract token from `claude login` credentials.
    async fn setup_anthropic_oauth(&mut self) -> Result<(), SetupError> {
        self.set_llm_backend_preserving_model("anthropic");

        // Try to extract existing OAuth token from Claude Code credentials
        if let Some(token) = crate::config::ClaudeCodeConfig::extract_oauth_token() {
            print_info(&format!("Found OAuth token: {}", mask_api_key(&token)));
            if confirm("Use this token?", true).map_err(SetupError::Io)? {
                return self.save_anthropic_oauth_token(&token).await;
            }
        } else {
            print_info("No OAuth token found from `claude login`.");
            print_info("Run `claude login` in a terminal to authenticate, then retry.");
            println!();

            if confirm("Retry after running `claude login`?", true).map_err(SetupError::Io)? {
                // Block until the user has run `claude login` in another terminal
                input("Press Enter after running `claude login` in another terminal...")
                    .map_err(SetupError::Io)?;
                if let Some(token) = crate::config::ClaudeCodeConfig::extract_oauth_token() {
                    print_info(&format!("Found OAuth token: {}", mask_api_key(&token)));
                    return self.save_anthropic_oauth_token(&token).await;
                }
                print_error("Still no OAuth token found.");
            }
        }

        // Fallback: let user paste the token manually, or switch to API key
        print_info("You can paste your OAuth token directly (starts with sk-ant-oat01-).");
        print_info("Or press Enter with no input to switch to the API key flow.");
        let token = secret_input("Anthropic OAuth token").map_err(SetupError::Io)?;
        let token_str = token.expose_secret();
        if token_str.is_empty() {
            print_info("Switching to API key flow...");
            return self
                .setup_api_key_provider(
                    "anthropic",
                    "ANTHROPIC_API_KEY",
                    "llm_anthropic_api_key",
                    "Anthropic API key",
                    "https://console.anthropic.com/settings/keys",
                    None,
                )
                .await;
        }
        self.save_anthropic_oauth_token(token_str).await
    }

    /// Save an Anthropic OAuth token to secrets and set env for immediate use.
    async fn save_anthropic_oauth_token(&mut self, token: &str) -> Result<(), SetupError> {
        // Validate token format to catch accidentally pasted API keys
        if !token.starts_with("sk-ant-oat") {
            print_error("Token doesn't look like an OAuth token (expected prefix: sk-ant-oat).");
            print_info("If you have an API key instead, use the 'Direct API Key' option.");
            return Err(SetupError::Config("Invalid OAuth token format".to_string()));
        }

        // Store in secrets if available
        if let Ok(ctx) = self.init_secrets_context().await {
            let key = SecretString::from(token.to_string());
            ctx.save_secret("llm_anthropic_oauth_token", &key)
                .await
                .map_err(|e| SetupError::Config(format!("Failed to save OAuth token: {e}")))?;
            print_success("OAuth token encrypted and saved");
        } else {
            print_info("Secrets not available. Set ANTHROPIC_OAUTH_TOKEN in your environment.");
        }

        // Make the token visible to `optional_env()` for subsequent config
        // resolution (model selection step). Uses the thread-safe overlay
        // instead of `std::env::set_var` to avoid UB on multi-threaded runtimes.
        crate::config::inject_single_var("ANTHROPIC_OAUTH_TOKEN", token);

        // Cache for model fetching
        self.llm_api_key = Some(SecretString::from(token.to_string()));

        print_success("Anthropic OAuth configured");
        Ok(())
    }

    /// Shared setup flow for API-key-based providers.
    async fn setup_api_key_provider(
        &mut self,
        backend: &str,
        env_var: &str,
        secret_name: &str,
        prompt_label: &str,
        hint_url: &str,
        override_display_name: Option<&str>,
    ) -> Result<(), SetupError> {
        let display_name = override_display_name.unwrap_or(match backend {
            "anthropic" => "Anthropic",
            "openai" => "OpenAI",
            other => other,
        });

        self.set_llm_backend_preserving_model(backend);

        // Check env var first
        if let Ok(existing) = std::env::var(env_var) {
            print_info(&format!("{env_var} found: {}", mask_api_key(&existing)));
            if confirm("Use this key?", true).map_err(SetupError::Io)? {
                // Persist env-provided key to secrets store for future runs
                if let Ok(ctx) = self.init_secrets_context().await {
                    let key = SecretString::from(existing.clone());
                    if let Err(e) = ctx.save_secret(secret_name, &key).await {
                        tracing::warn!("Failed to persist env key to secrets: {}", e);
                    }
                }
                self.llm_api_key = Some(SecretString::from(existing));
                print_success(&format!("{display_name} configured (from env)"));
                return Ok(());
            }
        }

        println!();
        print_info(&format!("Get your API key from: {hint_url}"));
        println!();

        let key = secret_input(prompt_label).map_err(SetupError::Io)?;
        let key_str = key.expose_secret();

        if key_str.is_empty() {
            return Err(SetupError::Config("API key cannot be empty".to_string()));
        }

        // Store in secrets if available
        if let Ok(ctx) = self.init_secrets_context().await {
            ctx.save_secret(secret_name, &key)
                .await
                .map_err(|e| SetupError::Config(format!("Failed to save API key: {e}")))?;
            print_success("API key encrypted and saved");
        } else {
            print_info(&format!(
                "Secrets not available. Set {env_var} in your environment."
            ));
        }

        // Make key visible to `optional_env()` for subsequent config resolution.
        // Uses the thread-safe overlay instead of `std::env::set_var` to avoid
        // UB on multi-threaded runtimes.
        crate::config::inject_single_var(env_var, key_str);

        // Cache key in memory for model fetching later in the wizard
        self.llm_api_key = Some(SecretString::from(key_str.to_string()));

        print_success(&format!("{display_name} configured"));
        Ok(())
    }

    /// Generic Ollama-style setup: just needs a base URL, no API key.
    fn setup_ollama_generic(
        &mut self,
        def: &crate::llm::ProviderDefinition,
    ) -> Result<(), SetupError> {
        self.set_llm_backend_preserving_model(&def.id);

        let default_url = self
            .settings
            .ollama_base_url
            .as_deref()
            .or(def.default_base_url.as_deref())
            .unwrap_or("http://localhost:11434");

        let display_name = def
            .setup
            .as_ref()
            .map(|s| s.display_name())
            .unwrap_or(&def.id);

        let url_input = optional_input(
            &format!("{display_name} base URL"),
            Some(&format!("default: {}", default_url)),
        )
        .map_err(SetupError::Io)?;

        let url = url_input.unwrap_or_else(|| default_url.to_string());
        self.settings.ollama_base_url = Some(url.clone());

        print_success(&format!("{display_name} configured ({})", url));
        Ok(())
    }

    /// AWS Bedrock provider setup: region, auth, and cross-region config.
    async fn setup_bedrock(&mut self) -> Result<(), SetupError> {
        self.set_llm_backend_preserving_model("bedrock");

        // Region
        let default_region = self
            .settings
            .bedrock_region
            .as_deref()
            .unwrap_or("us-east-1");

        let region_input =
            optional_input("AWS region", Some(&format!("default: {}", default_region)))
                .map_err(SetupError::Io)?;

        let region = region_input.unwrap_or_else(|| default_region.to_string());
        self.settings.bedrock_region = Some(region.clone());

        // Auth method
        print_info("Select authentication method:");
        println!();
        let auth_options = &[
            "AWS default credentials (env vars, ~/.aws/credentials, IAM roles)",
            "AWS named profile (SSO / assume-role)",
        ];
        let auth_choice = select_one("Auth:", auth_options).map_err(SetupError::Io)?;

        match auth_choice {
            0 => {
                // Default AWS credentials — clear any stale named profile
                self.settings.bedrock_profile = None;
                print_info(
                    "Using default AWS credential chain (env vars, ~/.aws/credentials, IAM roles).",
                );
            }
            1 => {
                // Named profile
                let profile =
                    input("AWS profile name (from ~/.aws/config)").map_err(SetupError::Io)?;
                if profile.trim().is_empty() {
                    // Empty input clears any previously configured profile
                    self.settings.bedrock_profile = None;
                    print_info("AWS profile cleared; using default AWS credential chain instead.");
                } else {
                    self.settings.bedrock_profile = Some(profile.clone());
                    print_success(&format!("AWS profile '{}' saved", profile));
                }
            }
            _ => return Err(SetupError::Config("Invalid auth selection".to_string())),
        }

        self.setup_bedrock_cross_region()
    }

    /// Bedrock cross-region inference prefix selection (sub-step of setup_bedrock).
    fn setup_bedrock_cross_region(&mut self) -> Result<(), SetupError> {
        print_info("Cross-region inference routes requests across AWS regions for capacity:");
        println!();
        let cross_options = &[
            "us     - route within US regions (recommended for us-east-1)",
            "global - route to any AWS region worldwide",
            "eu     - route within European regions",
            "apac   - route within Asia-Pacific regions",
            "none   - single-region only (no cross-region routing)",
        ];
        let cross_choice = select_one("Cross-region:", cross_options).map_err(SetupError::Io)?;

        let cross_region = match cross_choice {
            0 => Some("us".to_string()),
            1 => Some("global".to_string()),
            2 => Some("eu".to_string()),
            3 => Some("apac".to_string()),
            4 => None,
            _ => None,
        };
        self.settings.bedrock_cross_region = cross_region;

        let region = self
            .settings
            .bedrock_region
            .as_deref()
            .unwrap_or("us-east-1");
        print_success(&format!("AWS Bedrock configured (region: {})", region));
        Ok(())
    }

    /// Generic OpenAI-compatible setup: base URL + optional API key.
    async fn setup_openai_compatible_generic(
        &mut self,
        backend_id: &str,
        secret_name: &str,
        display_name: &str,
    ) -> Result<(), SetupError> {
        self.set_llm_backend_preserving_model(backend_id);

        let existing_url = self
            .settings
            .openai_compatible_base_url
            .clone()
            .or_else(|| std::env::var("LLM_BASE_URL").ok());

        let url = if let Some(ref u) = existing_url {
            let url_input = optional_input("Base URL", Some(&format!("current: {}", u)))
                .map_err(SetupError::Io)?;
            url_input.unwrap_or_else(|| u.clone())
        } else {
            input("Base URL (e.g., http://localhost:8000/v1)").map_err(SetupError::Io)?
        };

        if url.is_empty() {
            return Err(SetupError::Config(format!(
                "Base URL is required for {display_name}"
            )));
        }

        self.settings.openai_compatible_base_url = Some(url.clone());

        // Optional API key
        if confirm("Does this endpoint require an API key?", false).map_err(SetupError::Io)? {
            let key = secret_input("API key").map_err(SetupError::Io)?;
            let key_str = key.expose_secret();

            if !key_str.is_empty() {
                if let Ok(ctx) = self.init_secrets_context().await {
                    ctx.save_secret(secret_name, &key)
                        .await
                        .map_err(|e| SetupError::Config(format!("Failed to save API key: {e}")))?;
                    print_success("API key encrypted and saved");
                } else {
                    print_info("Secrets not available. Set the API key in your environment.");
                }
            }
        }

        print_success(&format!("{display_name} configured ({})", url));
        Ok(())
    }

    /// Step 4: Model selection.
    ///
    /// Branches on the selected LLM backend and fetches models from the
    /// appropriate provider API, with static defaults as fallback.
    async fn step_model_selection(&mut self) -> Result<(), SetupError> {
        // Show current model if already configured
        if let Some(ref current) = self.settings.selected_model {
            print_info(&format!("Current model: {}", current));
            println!();

            let options = ["Keep current model", "Change model"];
            let choice =
                select_one("What would you like to do?", &options).map_err(SetupError::Io)?;

            if choice == 0 {
                print_success(&format!("Keeping {}", current));
                return Ok(());
            }
        }

        let backend = self.settings.llm_backend.as_deref().unwrap_or("nearai");
        let registry = crate::llm::ProviderRegistry::load();

        if backend == "nearai" {
            // NEAR AI: use existing provider list_models()
            let fetched = self.fetch_nearai_models().await;
            let default_models: Vec<(String, String)> = vec![
                (
                    "zai-org/GLM-latest".into(),
                    "GLM Latest (default, fast)".into(),
                ),
                (
                    "anthropic::claude-sonnet-4-20250514".into(),
                    "Claude Sonnet 4 (best quality)".into(),
                ),
                (
                    "openai::gpt-5.3-codex".into(),
                    "GPT-5.3 Codex (flagship)".into(),
                ),
                ("openai::gpt-5.2".into(), "GPT-5.2".into()),
                ("openai::gpt-4o".into(), "GPT-4o".into()),
            ];

            let models = if fetched.is_empty() {
                default_models
            } else {
                fetched.iter().map(|m| (m.clone(), m.clone())).collect()
            };
            self.select_from_model_list(&models)?;
        } else if let Some(def) = registry.find(backend) {
            let can_list = def
                .setup
                .as_ref()
                .map(|s| s.can_list_models())
                .unwrap_or(false);

            if can_list {
                // Try to fetch models from the provider's /v1/models endpoint
                let cached_key = self
                    .llm_api_key
                    .as_ref()
                    .map(|k| k.expose_secret().to_string());

                let models = match backend {
                    "anthropic" => fetch_anthropic_models(cached_key.as_deref()).await,
                    "openai" => fetch_openai_models(cached_key.as_deref()).await,
                    "ollama" => {
                        let base_url = self
                            .settings
                            .ollama_base_url
                            .as_deref()
                            .or(def.default_base_url.as_deref())
                            .unwrap_or("http://localhost:11434");
                        let models = fetch_ollama_models(base_url).await;
                        if models.is_empty() {
                            print_info("No models found. Pull one first: ollama pull llama3");
                        }
                        models
                    }
                    _ => {
                        // Generic OpenAI-compatible model listing
                        let base_url = def.default_base_url.as_deref().unwrap_or("");
                        fetch_openai_compatible_models(base_url, cached_key.as_deref()).await
                    }
                };

                // Apply models_filter from setup hint (e.g., Groq "chat" filters non-chat models)
                let models =
                    if let Some(filter) = def.setup.as_ref().and_then(|s| s.models_filter()) {
                        let filter_lower = filter.to_lowercase();
                        models
                            .into_iter()
                            .filter(|(id, _)| id.to_lowercase().contains(&filter_lower))
                            .collect()
                    } else {
                        models
                    };

                if models.is_empty() {
                    // Fall back to manual entry
                    let default = &def.default_model;
                    let model_id = input(&format!("Model name (default: {default})"))
                        .map_err(SetupError::Io)?;
                    let model_id = if model_id.is_empty() {
                        default.clone()
                    } else {
                        model_id
                    };
                    self.settings.selected_model = Some(model_id.clone());
                    print_success(&format!("Selected {}", model_id));
                } else {
                    self.select_from_model_list(&models)?;
                }
            } else {
                // Manual model entry
                let default = &def.default_model;
                let model_id =
                    input(&format!("Model name (default: {default})")).map_err(SetupError::Io)?;
                let model_id = if model_id.is_empty() {
                    default.clone()
                } else {
                    model_id
                };
                self.settings.selected_model = Some(model_id.clone());
                print_success(&format!("Selected {}", model_id));
            }
        } else if backend == "bedrock" {
            let model_id = input("Bedrock model ID (e.g., anthropic.claude-opus-4-6-v1)")
                .map_err(SetupError::Io)?;
            if model_id.is_empty() {
                return Err(SetupError::Config("Model ID is required".to_string()));
            }
            self.settings.selected_model = Some(model_id.clone());
            print_success(&format!("Selected {}", model_id));
        } else {
            // Unknown provider, manual entry
            let model_id = input("Model name (e.g., meta-llama/Llama-3-8b-chat-hf)")
                .map_err(SetupError::Io)?;
            if model_id.is_empty() {
                return Err(SetupError::Config("Model name is required".to_string()));
            }
            self.settings.selected_model = Some(model_id.clone());
            print_success(&format!("Selected {}", model_id));
        }

        Ok(())
    }

    /// Present a model list to the user, with a "Custom model ID" escape hatch.
    ///
    /// Each entry is `(model_id, display_label)`.
    fn select_from_model_list(&mut self, models: &[(String, String)]) -> Result<(), SetupError> {
        println!("Available models:");
        println!();

        let mut options: Vec<&str> = models.iter().map(|(_, desc)| desc.as_str()).collect();
        options.push("Custom model ID");

        let choice = select_one("Select a model:", &options).map_err(SetupError::Io)?;

        let selected = if choice == options.len() - 1 {
            loop {
                let raw = input("Enter model ID").map_err(SetupError::Io)?;
                let trimmed = raw.trim().to_string();
                if trimmed.is_empty() {
                    println!("Model ID cannot be empty.");
                    continue;
                }
                break trimmed;
            }
        } else {
            models[choice].0.clone()
        };

        self.settings.selected_model = Some(selected.clone());
        print_success(&format!("Selected {}", selected));
        Ok(())
    }

    /// Fetch available models from the NEAR AI API.
    ///
    /// Uses [`build_nearai_model_fetch_config`] to construct the provider config,
    /// which reads `NEARAI_API_KEY` from the environment when present.
    async fn fetch_nearai_models(&self) -> Vec<String> {
        let session = match self.session_manager {
            Some(ref s) => Arc::clone(s),
            None => return vec![],
        };

        use crate::llm::create_llm_provider;

        let config = build_nearai_model_fetch_config();

        match create_llm_provider(&config, session).await {
            Ok(provider) => match provider.list_models().await {
                Ok(models) => models,
                Err(e) => {
                    print_info(&format!("Could not fetch models: {}. Using defaults.", e));
                    vec![]
                }
            },
            Err(e) => {
                print_info(&format!(
                    "Could not initialize provider: {}. Using defaults.",
                    e
                ));
                vec![]
            }
        }
    }

    /// Step 5: Embeddings configuration.
    fn step_embeddings(&mut self) -> Result<(), SetupError> {
        print_info("Embeddings enable semantic search in your workspace memory.");
        println!();

        if !confirm("Enable semantic search?", true).map_err(SetupError::Io)? {
            self.settings.embeddings.enabled = false;
            print_info("Embeddings disabled. Workspace will use keyword search only.");
            return Ok(());
        }

        let backend = self.settings.llm_backend.as_deref().unwrap_or("nearai");
        let has_openai_key = std::env::var("OPENAI_API_KEY").is_ok()
            || (backend == "openai" && self.llm_api_key.is_some());
        let has_nearai = backend == "nearai" || self.session_manager.is_some();

        // If the LLM backend is OpenAI and we already have a key, default to OpenAI embeddings
        if backend == "openai" && has_openai_key {
            self.settings.embeddings.enabled = true;
            self.settings.embeddings.provider = "openai".to_string();
            self.settings.embeddings.model = "text-embedding-3-small".to_string();
            print_success("Embeddings enabled via OpenAI (using existing API key)");
            return Ok(());
        }

        // If no NEAR AI session and no OpenAI key, only OpenAI is viable
        if !has_nearai && !has_openai_key {
            print_info("No NEAR AI session or OpenAI key found for embeddings.");
            print_info("Set OPENAI_API_KEY in your environment to enable embeddings.");
            self.settings.embeddings.enabled = false;
            return Ok(());
        }

        let mut options = Vec::new();
        if has_nearai {
            options.push("NEAR AI (uses same auth, no extra cost)");
        }
        options.push("OpenAI (requires API key)");

        let choice = select_one("Select embeddings provider:", &options).map_err(SetupError::Io)?;

        // Map choice back to provider name
        let provider = if has_nearai && choice == 0 {
            "nearai"
        } else {
            "openai"
        };

        match provider {
            "nearai" => {
                self.settings.embeddings.enabled = true;
                self.settings.embeddings.provider = "nearai".to_string();
                self.settings.embeddings.model = "text-embedding-3-small".to_string();
                print_success("Embeddings enabled via NEAR AI");
            }
            _ => {
                if !has_openai_key {
                    print_info("OPENAI_API_KEY not set in environment.");
                    print_info("Add it to your .env file or environment to enable embeddings.");
                }
                self.settings.embeddings.enabled = true;
                self.settings.embeddings.provider = "openai".to_string();
                self.settings.embeddings.model = "text-embedding-3-small".to_string();
                print_success("Embeddings configured for OpenAI");
            }
        }

        Ok(())
    }

    /// Initialize secrets context for channel setup.
    async fn init_secrets_context(&mut self) -> Result<SecretsContext, SetupError> {
        // Get crypto (should be set from step 2, or load from keychain/env)
        let crypto = if let Some(ref c) = self.secrets_crypto {
            Arc::clone(c)
        } else {
            // Try to load master key from keychain or env
            let key = if let Ok(env_key) = std::env::var("SECRETS_MASTER_KEY") {
                env_key
            } else if let Ok(keychain_key) = crate::secrets::keychain::get_master_key().await {
                keychain_key.iter().map(|b| format!("{:02x}", b)).collect()
            } else {
                return Err(SetupError::Config(
                    "Secrets not configured. Run full setup or set SECRETS_MASTER_KEY.".to_string(),
                ));
            };

            let crypto = Arc::new(
                SecretsCrypto::new(SecretString::from(key))
                    .map_err(|e| SetupError::Config(e.to_string()))?,
            );
            self.secrets_crypto = Some(Arc::clone(&crypto));
            crypto
        };

        // Create backend-appropriate secrets store.
        // Use runtime dispatch based on the user's selected backend.
        // Default to whichever backend is compiled in. When only libsql is
        // available, we must not default to "postgres" or we'd skip store creation.
        let default_backend = {
            #[cfg(feature = "postgres")]
            {
                "postgres"
            }
            #[cfg(not(feature = "postgres"))]
            {
                "libsql"
            }
        };
        let selected_backend = self
            .settings
            .database_backend
            .as_deref()
            .unwrap_or(default_backend);

        match selected_backend {
            #[cfg(feature = "libsql")]
            "libsql" | "turso" | "sqlite" => {
                if let Some(store) = self.create_libsql_secrets_store(&crypto)? {
                    return Ok(SecretsContext::from_store(store, self.owner_id()));
                }
                // Fallback to postgres if libsql store creation returned None
                #[cfg(feature = "postgres")]
                if let Some(store) = self.create_postgres_secrets_store(&crypto).await? {
                    return Ok(SecretsContext::from_store(store, self.owner_id()));
                }
            }
            #[cfg(feature = "postgres")]
            _ => {
                if let Some(store) = self.create_postgres_secrets_store(&crypto).await? {
                    return Ok(SecretsContext::from_store(store, self.owner_id()));
                }
                // Fallback to libsql if postgres store creation returned None
                #[cfg(feature = "libsql")]
                if let Some(store) = self.create_libsql_secrets_store(&crypto)? {
                    return Ok(SecretsContext::from_store(store, self.owner_id()));
                }
            }
            #[cfg(not(feature = "postgres"))]
            _ => {}
        }

        Err(SetupError::Config(
            "No database backend available for secrets storage".to_string(),
        ))
    }

    /// Create a PostgreSQL secrets store from the current pool.
    #[cfg(feature = "postgres")]
    async fn create_postgres_secrets_store(
        &mut self,
        crypto: &Arc<SecretsCrypto>,
    ) -> Result<Option<Arc<dyn SecretsStore>>, SetupError> {
        let pool = if let Some(ref p) = self.db_pool {
            p.clone()
        } else {
            // Fall back to creating one from settings/env
            let url = self
                .settings
                .database_url
                .clone()
                .or_else(|| std::env::var("DATABASE_URL").ok());

            if let Some(url) = url {
                self.test_database_connection_postgres(&url).await?;
                self.run_migrations_postgres().await?;
                match self.db_pool.clone() {
                    Some(pool) => pool,
                    None => {
                        return Err(SetupError::Database(
                            "Database pool not initialized after connection test".to_string(),
                        ));
                    }
                }
            } else {
                return Ok(None);
            }
        };

        let store: Arc<dyn SecretsStore> = Arc::new(crate::secrets::PostgresSecretsStore::new(
            pool,
            Arc::clone(crypto),
        ));
        Ok(Some(store))
    }

    /// Create a libSQL secrets store from the current backend.
    #[cfg(feature = "libsql")]
    fn create_libsql_secrets_store(
        &self,
        crypto: &Arc<SecretsCrypto>,
    ) -> Result<Option<Arc<dyn SecretsStore>>, SetupError> {
        if let Some(ref backend) = self.db_backend {
            let store: Arc<dyn SecretsStore> = Arc::new(crate::secrets::LibSqlSecretsStore::new(
                backend.shared_db(),
                Arc::clone(crypto),
            ));
            Ok(Some(store))
        } else {
            Ok(None)
        }
    }

    /// Step 6: Channel configuration.
    async fn step_channels(&mut self) -> Result<(), SetupError> {
        // First, configure tunnel (shared across all channels that need webhooks)
        match setup_tunnel(&self.settings).await {
            Ok(tunnel_settings) => {
                self.settings.tunnel = tunnel_settings;
            }
            Err(e) => {
                print_info(&format!("Tunnel setup skipped: {}", e));
            }
        }
        println!();

        // Discover available WASM channels
        let channels_dir = ironclaw_base_dir().join("channels");

        let mut discovered_channels = discover_wasm_channels(&channels_dir).await;
        let installed_names: HashSet<String> = discovered_channels
            .iter()
            .map(|(name, _)| name.clone())
            .collect();

        // Build channel list from registry (if available) + bundled + discovered
        let wasm_channel_names = build_channel_options(&discovered_channels);

        // Build options list dynamically
        let mut options: Vec<(String, bool)> = vec![
            ("CLI/TUI (always enabled)".to_string(), true),
            (
                "HTTP webhook".to_string(),
                self.settings.channels.http_enabled,
            ),
            ("Signal".to_string(), self.settings.channels.signal_enabled),
        ];

        let non_wasm_count = options.len();

        // Add available WASM channels (installed + bundled + registry)
        for name in &wasm_channel_names {
            let is_enabled = self.settings.channels.wasm_channels.contains(name);
            let label = if installed_names.contains(name) {
                format!("{} (installed)", capitalize_first(name))
            } else {
                format!("{} (will install)", capitalize_first(name))
            };
            options.push((label, is_enabled));
        }

        let options_refs: Vec<(&str, bool)> =
            options.iter().map(|(s, b)| (s.as_str(), *b)).collect();

        let selected = select_many("Which channels do you want to enable?", &options_refs)
            .map_err(SetupError::Io)?;

        let selected_wasm_channels: Vec<String> = wasm_channel_names
            .iter()
            .enumerate()
            .filter_map(|(idx, name)| {
                if selected.contains(&(non_wasm_count + idx)) {
                    Some(name.clone())
                } else {
                    None
                }
            })
            .collect();

        // Install selected channels that aren't already on disk
        let mut any_installed = false;

        // Try bundled channels first (pre-compiled artifacts from channels-src/)
        if let Some(installed) = install_selected_bundled_channels(
            &channels_dir,
            &selected_wasm_channels,
            &installed_names,
        )
        .await?
            && !installed.is_empty()
        {
            print_success(&format!(
                "Installed bundled channels: {}",
                installed.join(", ")
            ));
            any_installed = true;
        }

        let installed_from_registry = install_selected_registry_channels(
            &channels_dir,
            &selected_wasm_channels,
            &installed_names,
        )
        .await;

        if !installed_from_registry.is_empty() {
            print_success(&format!(
                "Built from registry: {}",
                installed_from_registry.join(", ")
            ));
            any_installed = true;
        }

        // Re-discover after installs
        if any_installed {
            discovered_channels = discover_wasm_channels(&channels_dir).await;
        }

        // Determine if we need secrets context
        let needs_secrets =
            selected.contains(&CHANNEL_INDEX_HTTP) || !selected_wasm_channels.is_empty();
        let secrets = if needs_secrets {
            match self.init_secrets_context().await {
                Ok(ctx) => Some(ctx),
                Err(e) => {
                    print_info(&format!("Secrets not available: {}", e));
                    print_info("Channel tokens must be set via environment variables.");
                    None
                }
            }
        } else {
            None
        };

        // HTTP channel
        if selected.contains(&CHANNEL_INDEX_HTTP) {
            println!();
            if let Some(ref ctx) = secrets {
                let result = setup_http(ctx).await?;
                self.settings.channels.http_enabled = result.enabled;
                self.settings.channels.http_port = Some(result.port);
            } else {
                self.settings.channels.http_enabled = true;
                self.settings.channels.http_port = Some(8080);
                print_info("HTTP webhook enabled on port 8080 (set HTTP_WEBHOOK_SECRET in env)");
            }
        } else {
            self.settings.channels.http_enabled = false;
        }

        // Signal channel
        if selected.contains(&CHANNEL_INDEX_SIGNAL) {
            println!();
            let result = setup_signal(&self.settings).await?;
            self.settings.channels.signal_enabled = result.enabled;
            self.settings.channels.signal_http_url = Some(result.http_url);
            self.settings.channels.signal_account = Some(result.account);
            self.settings.channels.signal_allow_from = Some(result.allow_from);
            self.settings.channels.signal_allow_from_groups = Some(result.allow_from_groups);
            self.settings.channels.signal_dm_policy = Some(result.dm_policy);
            self.settings.channels.signal_group_policy = Some(result.group_policy);
            self.settings.channels.signal_group_allow_from = Some(result.group_allow_from);
        } else {
            self.settings.channels.signal_enabled = false;
            self.settings.channels.signal_http_url = None;
            self.settings.channels.signal_account = None;
            self.settings.channels.signal_allow_from = None;
            self.settings.channels.signal_allow_from_groups = None;
            self.settings.channels.signal_dm_policy = None;
            self.settings.channels.signal_group_policy = None;
            self.settings.channels.signal_group_allow_from = None;
        }

        let discovered_by_name: HashMap<String, ChannelCapabilitiesFile> =
            discovered_channels.into_iter().collect();

        // Process selected WASM channels
        let mut enabled_wasm_channels = Vec::new();
        for channel_name in selected_wasm_channels {
            println!();
            if let Some(ref ctx) = secrets {
                let result = if let Some(cap_file) = discovered_by_name.get(&channel_name) {
                    if !cap_file.setup.required_secrets.is_empty() {
                        setup_wasm_channel(ctx, &channel_name, &cap_file.setup).await?
                    } else {
                        print_info(&format!(
                            "No setup configuration found for {}",
                            channel_name
                        ));
                        crate::setup::channels::WasmChannelSetupResult {
                            enabled: true,
                            channel_name: channel_name.clone(),
                        }
                    }
                } else {
                    print_info(&format!(
                        "Channel '{}' is selected but not available on disk.",
                        channel_name
                    ));
                    continue;
                };

                if result.enabled {
                    enabled_wasm_channels.push(result.channel_name);
                }
            } else {
                // No secrets context, just enable the channel
                print_info(&format!(
                    "{} enabled (configure tokens via environment)",
                    capitalize_first(&channel_name)
                ));
                enabled_wasm_channels.push(channel_name.clone());
            }
        }

        self.settings.channels.wasm_channels = enabled_wasm_channels;

        Ok(())
    }

    /// Step 7: Extensions (tools) installation from registry.
    async fn step_extensions(&mut self) -> Result<(), SetupError> {
        let catalog = match load_registry_catalog() {
            Some(c) => c,
            None => {
                print_info("Extension registry not found. Skipping tool installation.");
                print_info("Install tools manually with: ironclaw tool install <path>");
                return Ok(());
            }
        };

        let tools: Vec<_> = catalog
            .list(Some(crate::registry::manifest::ManifestKind::Tool), None)
            .into_iter()
            .cloned()
            .collect();

        if tools.is_empty() {
            print_info("No tools found in registry.");
            return Ok(());
        }

        print_info("Available tools from the extension registry:");
        print_info("Select which tools to install. You can install more later with:");
        print_info("  ironclaw registry install <name>");
        println!();

        // Check which tools are already installed
        let tools_dir = ironclaw_base_dir().join("tools");

        let installed_tools = discover_installed_tools(&tools_dir).await;

        // Build options: show display_name + description, pre-check "default" tagged + already installed
        let mut options: Vec<(String, bool)> = Vec::new();
        for tool in &tools {
            let is_installed = installed_tools.contains(&tool.name);
            let is_default = tool.tags.contains(&"default".to_string());
            let status = if is_installed { " (installed)" } else { "" };
            let auth_hint = tool
                .auth_summary
                .as_ref()
                .and_then(|a| a.method.as_deref())
                .map(|m| format!(" [{}]", m))
                .unwrap_or_default();

            let label = format!(
                "{}{}{} - {}",
                tool.display_name, auth_hint, status, tool.description
            );
            options.push((label, is_default || is_installed));
        }

        let options_refs: Vec<(&str, bool)> =
            options.iter().map(|(s, b)| (s.as_str(), *b)).collect();

        let selected = select_many("Which tools do you want to install?", &options_refs)
            .map_err(SetupError::Io)?;

        if selected.is_empty() {
            print_info("No tools selected.");
            return Ok(());
        }

        // Install selected tools that aren't already on disk
        let repo_root = catalog.root().parent().unwrap_or(catalog.root());
        let installer = crate::registry::installer::RegistryInstaller::new(
            repo_root.to_path_buf(),
            tools_dir.clone(),
            ironclaw_base_dir().join("channels"),
        );

        let mut installed_count = 0;
        let mut auth_needed: Vec<String> = Vec::new();

        for idx in &selected {
            let tool = &tools[*idx];
            if installed_tools.contains(&tool.name) {
                continue; // Already installed, skip
            }

            match installer.install_with_source_fallback(tool, false).await {
                Ok(outcome) => {
                    print_success(&format!("Installed {}", outcome.name));
                    for warning in &outcome.warnings {
                        print_info(&format!("{}: {}", outcome.name, warning));
                    }
                    installed_count += 1;

                    // Track auth needs
                    if let Some(auth) = &tool.auth_summary
                        && auth.method.as_deref() != Some("none")
                        && auth.method.is_some()
                    {
                        let provider = auth.provider.as_deref().unwrap_or(&tool.name);
                        // Only mention unique providers (Google tools share auth)
                        let hint = format!("  {} - ironclaw tool auth {}", provider, tool.name);
                        if !auth_needed
                            .iter()
                            .any(|h| h.starts_with(&format!("  {} -", provider)))
                        {
                            auth_needed.push(hint);
                        }
                    }
                }
                Err(e) => {
                    print_error(&format!("Failed to install {}: {}", tool.display_name, e));
                }
            }
        }

        if installed_count > 0 {
            println!();
            print_success(&format!("{} tool(s) installed.", installed_count));
        }

        if !auth_needed.is_empty() {
            println!();
            print_info("Some tools need authentication. Run after setup:");
            for hint in &auth_needed {
                print_info(hint);
            }
        }

        Ok(())
    }

    /// Step 8: Docker Sandbox -- check Docker installation and availability.
    async fn step_docker_sandbox(&mut self) -> Result<(), SetupError> {
        print_info("IronClaw can execute code, run builds, and use tools inside Docker");
        print_info("containers. This keeps your system safe -- commands from the LLM run");
        print_info("in an isolated sandbox with no access to your credentials, limited");
        print_info("filesystem access, and network traffic restricted to an allowlist.");
        println!();
        print_info("Without Docker, code execution tools (shell, file write) run directly");
        print_info("on your machine with no isolation.");
        println!();

        if !confirm("Enable Docker sandbox?", false).map_err(SetupError::Io)? {
            self.settings.sandbox.enabled = false;
            print_info("Sandbox disabled. You can enable it later with SANDBOX_ENABLED=true.");
            return Ok(());
        }

        // Check Docker availability
        let detection = crate::sandbox::detect::check_docker().await;

        match detection.status {
            crate::sandbox::detect::DockerStatus::Available => {
                self.settings.sandbox.enabled = true;
                print_success("Docker is installed and running. Sandbox enabled.");
            }
            crate::sandbox::detect::DockerStatus::NotInstalled
            | crate::sandbox::detect::DockerStatus::NotRunning => {
                println!();
                let not_installed =
                    detection.status == crate::sandbox::detect::DockerStatus::NotInstalled;
                if not_installed {
                    print_error("Docker is not installed.");
                    print_info(detection.platform.install_hint());
                } else {
                    print_error("Docker is installed but not running.");
                    print_info(detection.platform.start_hint());
                }
                println!();

                let retry_prompt = if not_installed {
                    "Retry after installing Docker?"
                } else {
                    "Retry after starting Docker?"
                };
                if confirm(retry_prompt, false).map_err(SetupError::Io)? {
                    let retry = crate::sandbox::detect::check_docker().await;
                    if retry.status.is_ok() {
                        self.settings.sandbox.enabled = true;
                        print_success(if not_installed {
                            "Docker is now available. Sandbox enabled."
                        } else {
                            "Docker is now running. Sandbox enabled."
                        });
                    } else {
                        self.settings.sandbox.enabled = false;
                        print_info(if not_installed {
                            "Docker still not available. Sandbox disabled for now."
                        } else {
                            "Docker still not responding. Sandbox disabled for now."
                        });
                    }
                } else {
                    self.settings.sandbox.enabled = false;
                    print_info(if not_installed {
                        "Sandbox disabled. Install Docker and set SANDBOX_ENABLED=true later."
                    } else {
                        "Sandbox disabled. Start Docker and set SANDBOX_ENABLED=true later."
                    });
                }
            }
            crate::sandbox::detect::DockerStatus::Disabled => {
                self.settings.sandbox.enabled = false;
            }
        }

        // Claude Code sandbox sub-step (only if Docker sandbox is enabled)
        if self.settings.sandbox.enabled {
            self.step_claude_code_sandbox().await?;
        }

        Ok(())
    }

    /// Claude Code sandbox sub-step: enable Claude CLI inside Docker containers.
    async fn step_claude_code_sandbox(&mut self) -> Result<(), SetupError> {
        println!();
        print_info("Claude Code mode lets the agent delegate complex tasks to Claude CLI");
        print_info("running inside sandboxed Docker containers.");
        println!();

        if !confirm("Enable Claude Code sandbox mode?", false).map_err(SetupError::Io)? {
            self.settings.sandbox.claude_code_enabled = false;
            return Ok(());
        }

        // Check for Anthropic credentials (API key or OAuth token).
        // Uses `optional_env()` which reads both real env vars and the
        // injected overlay (secrets DB, wizard-set values).
        let has_credentials = || {
            let has_api_key = crate::config::helpers::optional_env("ANTHROPIC_API_KEY")
                .ok()
                .flatten()
                .is_some_and(|v| !v.is_empty() && v != OAUTH_PLACEHOLDER);
            let has_oauth = crate::config::ClaudeCodeConfig::extract_oauth_token().is_some()
                || crate::config::helpers::optional_env("ANTHROPIC_OAUTH_TOKEN")
                    .ok()
                    .flatten()
                    .is_some_and(|v| !v.is_empty());
            has_api_key || has_oauth
        };

        if has_credentials() {
            self.settings.sandbox.claude_code_enabled = true;
            print_success("Claude Code sandbox enabled");
        } else {
            print_error("No Anthropic credentials found.");
            print_info(
                "Claude Code needs ANTHROPIC_API_KEY or an OAuth token from `claude login`.",
            );
            println!();

            if confirm("Retry after setting up credentials?", false).map_err(SetupError::Io)? {
                if has_credentials() {
                    self.settings.sandbox.claude_code_enabled = true;
                    print_success("Claude Code sandbox enabled");
                } else {
                    self.settings.sandbox.claude_code_enabled = false;
                    print_info("No credentials found. Claude Code disabled for now.");
                    print_info("Set ANTHROPIC_API_KEY or run `claude login` and enable later.");
                }
            } else {
                self.settings.sandbox.claude_code_enabled = false;
                print_info("Claude Code disabled. Enable with CLAUDE_CODE_ENABLED=true later.");
            }
        }

        Ok(())
    }

    /// Step 9: Heartbeat configuration.
    fn step_heartbeat(&mut self) -> Result<(), SetupError> {
        print_info("Heartbeat runs periodic background tasks (e.g., checking your calendar,");
        print_info("monitoring for notifications, running scheduled workflows).");
        println!();

        if !confirm("Enable heartbeat?", false).map_err(SetupError::Io)? {
            self.settings.heartbeat.enabled = false;
            print_info("Heartbeat disabled.");
            return Ok(());
        }

        self.settings.heartbeat.enabled = true;

        // Interval
        let interval_str = optional_input("Check interval in minutes", Some("default: 30"))
            .map_err(SetupError::Io)?;

        if let Some(s) = interval_str {
            if let Ok(mins) = s.parse::<u64>() {
                self.settings.heartbeat.interval_secs = mins * 60;
            }
        } else {
            self.settings.heartbeat.interval_secs = 1800; // 30 minutes
        }

        // Notify channel
        let notify_channel = optional_input("Notify channel on findings", Some("e.g., telegram"))
            .map_err(SetupError::Io)?;
        self.settings.heartbeat.notify_channel = notify_channel;

        print_success(&format!(
            "Heartbeat enabled (every {} minutes)",
            self.settings.heartbeat.interval_secs / 60
        ));

        Ok(())
    }

    /// Persist current settings to the database.
    ///
    /// Returns `Ok(true)` if settings were saved, `Ok(false)` if no database
    /// connection is available yet (e.g., before Step 1 completes).
    async fn persist_settings(&self) -> Result<bool, SetupError> {
        let db_map = self.settings.to_db_map();
        let saved = false;

        #[cfg(feature = "postgres")]
        let saved = if !saved {
            if let Some(ref pool) = self.db_pool {
                let store = crate::history::Store::from_pool(pool.clone());
                store
                    .set_all_settings(self.owner_id(), &db_map)
                    .await
                    .map_err(|e| {
                        SetupError::Database(format!("Failed to save settings to database: {}", e))
                    })?;
                true
            } else {
                false
            }
        } else {
            saved
        };

        #[cfg(feature = "libsql")]
        let saved = if !saved {
            if let Some(ref backend) = self.db_backend {
                use crate::db::SettingsStore as _;
                backend
                    .set_all_settings(self.owner_id(), &db_map)
                    .await
                    .map_err(|e| {
                        SetupError::Database(format!("Failed to save settings to database: {}", e))
                    })?;
                true
            } else {
                false
            }
        } else {
            saved
        };

        Ok(saved)
    }

    /// Write bootstrap environment variables to `~/.ironclaw/.env`.
    ///
    /// These are the chicken-and-egg settings needed before the database is
    /// connected (DATABASE_BACKEND, DATABASE_URL, LLM_BACKEND, etc.).
    ///
    /// **Credentials are NOT written here.** API keys and OAuth tokens live
    /// only in the encrypted secrets DB. `LlmConfig::resolve()` defers
    /// gracefully when credentials are missing during early startup, and the
    /// re-resolution in `AppBuilder::build_all()` fills them in after
    /// `inject_llm_keys_from_secrets()` loads from encrypted storage.
    fn write_bootstrap_env(&self) -> Result<(), SetupError> {
        let registry = crate::llm::ProviderRegistry::load();
        let mut env_vars: Vec<(String, String)> = Vec::new();

        if let Some(ref backend) = self.settings.database_backend {
            env_vars.push(("DATABASE_BACKEND".to_string(), backend.clone()));
        }
        if let Some(ref url) = self.settings.database_url {
            env_vars.push(("DATABASE_URL".to_string(), url.clone()));
        }
        if let Some(ref path) = self.settings.libsql_path {
            env_vars.push(("LIBSQL_PATH".to_string(), path.clone()));
        }
        if let Some(ref url) = self.settings.libsql_url {
            env_vars.push(("LIBSQL_URL".to_string(), url.clone()));
        }

        // LLM bootstrap vars: same chicken-and-egg problem as DATABASE_BACKEND.
        // Config::from_env() needs the backend before the DB is connected.
        if let Some(ref backend) = self.settings.llm_backend {
            env_vars.push(("LLM_BACKEND".to_string(), backend.clone()));
        }
        if let Some(ref url) = self.settings.openai_compatible_base_url {
            env_vars.push(("LLM_BASE_URL".to_string(), url.clone()));
        }
        if let Some(ref url) = self.settings.ollama_base_url {
            env_vars.push(("OLLAMA_BASE_URL".to_string(), url.clone()));
        }
        if let Some(ref region) = self.settings.bedrock_region {
            env_vars.push(("BEDROCK_REGION".to_string(), region.clone()));
        }
        if self.settings.llm_backend.as_deref() == Some("bedrock") {
            if let Some(ref model) = self.settings.selected_model {
                env_vars.push(("BEDROCK_MODEL".to_string(), model.clone()));
            }
            if let Some(ref cross) = self.settings.bedrock_cross_region {
                env_vars.push(("BEDROCK_CROSS_REGION".to_string(), cross.clone()));
            }
            if let Some(ref profile) = self.settings.bedrock_profile {
                env_vars.push(("AWS_PROFILE".to_string(), profile.clone()));
            }
        }

        // Model name: same chicken-and-egg — Config::from_env() resolves the
        // model before the DB is connected, so we must persist it to .env.
        // Write the backend-specific env var so the correct resolution path
        // picks it up (looked up from the provider registry).
        // Bedrock model is already written above as BEDROCK_MODEL, skip here.
        if self.settings.llm_backend.as_deref() != Some("bedrock")
            && let Some(ref model) = self.settings.selected_model
        {
            let backend_str = self.settings.llm_backend.as_deref().unwrap_or("nearai");
            let model_env = registry.model_env_var(backend_str);
            env_vars.push((model_env.to_string(), model.clone()));
        }

        // Also write provider-specific base URL env var if the provider
        // defines one (e.g., GROQ doesn't need LLM_BASE_URL since its
        // default is compiled in, but it doesn't hurt to be explicit).
        if let Some(ref backend) = self.settings.llm_backend
            && let Some(def) = registry.find(backend)
            && let Some(ref base_url_env) = def.base_url_env
            && let Some(ref base_url) = def.default_base_url
            && base_url_env != "LLM_BASE_URL"
            && base_url_env != "OLLAMA_BASE_URL"
        {
            env_vars.push((base_url_env.clone(), base_url.clone()));
        }

        // Preserve NEARAI_API_KEY if present (set by API key auth flow
        // via the thread-safe runtime env overlay).
        if let Some(api_key) = crate::config::helpers::env_or_override("NEARAI_API_KEY")
            && !api_key.is_empty()
        {
            env_vars.push(("NEARAI_API_KEY".to_string(), api_key));
        }

        // Secrets master key (env var mode): write to .env so it's available
        // on next startup before the DB is connected.
        if let Some(ref key_hex) = self.settings.secrets_master_key_hex {
            env_vars.push(("SECRETS_MASTER_KEY".to_string(), key_hex.clone()));
        }

        // Always write ONBOARD_COMPLETED so that check_onboard_needed()
        // (which runs before the DB is connected) knows to skip re-onboarding.
        if self.settings.onboard_completed {
            env_vars.push(("ONBOARD_COMPLETED".to_string(), "true".to_string()));
        }

        // Claude Code sandbox mode
        if self.settings.sandbox.claude_code_enabled {
            env_vars.push(("CLAUDE_CODE_ENABLED".to_string(), "true".to_string()));
        }

        // Signal channel env vars (chicken-and-egg: config resolves before DB).
        if let Some(ref url) = self.settings.channels.signal_http_url {
            env_vars.push(("SIGNAL_HTTP_URL".to_string(), url.clone()));
        }
        if let Some(ref account) = self.settings.channels.signal_account {
            env_vars.push(("SIGNAL_ACCOUNT".to_string(), account.clone()));
        }
        if let Some(ref allow_from) = self.settings.channels.signal_allow_from {
            env_vars.push(("SIGNAL_ALLOW_FROM".to_string(), allow_from.clone()));
        }
        if let Some(ref allow_from_groups) = self.settings.channels.signal_allow_from_groups
            && !allow_from_groups.is_empty()
        {
            env_vars.push((
                "SIGNAL_ALLOW_FROM_GROUPS".to_string(),
                allow_from_groups.clone(),
            ));
        }
        if let Some(ref dm_policy) = self.settings.channels.signal_dm_policy {
            env_vars.push(("SIGNAL_DM_POLICY".to_string(), dm_policy.clone()));
        }
        if let Some(ref group_policy) = self.settings.channels.signal_group_policy {
            env_vars.push(("SIGNAL_GROUP_POLICY".to_string(), group_policy.clone()));
        }
        if let Some(ref group_allow_from) = self.settings.channels.signal_group_allow_from
            && !group_allow_from.is_empty()
        {
            env_vars.push((
                "SIGNAL_GROUP_ALLOW_FROM".to_string(),
                group_allow_from.clone(),
            ));
        }

        if !env_vars.is_empty() {
            let pairs: Vec<(&str, &str)> = env_vars
                .iter()
                .map(|(k, v)| (k.as_str(), v.as_str()))
                .collect();
            crate::bootstrap::upsert_bootstrap_vars(&pairs).map_err(|e| {
                SetupError::Io(std::io::Error::other(format!(
                    "Failed to save bootstrap env to .env: {}",
                    e
                )))
            })?;
        }

        Ok(())
    }

    /// Persist the NEAR AI session token to the database.
    ///
    /// The session manager writes to disk during `ensure_authenticated()` but
    /// doesn't have a DB store attached during onboarding. This reads the
    /// session file from disk and stores it under the `nearai.session_token`
    /// key so the runtime's `attach_store()` finds it without fallback.
    ///
    /// Best-effort: silently ignores errors (no DB connection yet, no
    /// session file, etc.).
    async fn persist_session_to_db(&self) {
        let session_path = crate::config::llm::default_session_path();
        let data = match std::fs::read_to_string(&session_path) {
            Ok(d) if !d.trim().is_empty() => d,
            _ => return,
        };
        let value: serde_json::Value = match serde_json::from_str(&data) {
            Ok(v) => v,
            Err(_) => return,
        };

        #[cfg(feature = "postgres")]
        if let Some(ref pool) = self.db_pool {
            let store = crate::history::Store::from_pool(pool.clone());
            if let Err(e) = store
                .set_setting(self.owner_id(), "nearai.session_token", &value)
                .await
            {
                tracing::debug!("Could not persist session token to postgres: {}", e);
            } else {
                tracing::debug!("Session token persisted to database");
                return;
            }
        }

        #[cfg(feature = "libsql")]
        if let Some(ref backend) = self.db_backend {
            use crate::db::SettingsStore as _;
            if let Err(e) = backend
                .set_setting(self.owner_id(), "nearai.session_token", &value)
                .await
            {
                tracing::debug!("Could not persist session token to libsql: {}", e);
            } else {
                tracing::debug!("Session token persisted to database");
            }
        }
    }

    /// Persist settings to DB and bootstrap .env after each step.
    ///
    /// Silently ignores errors (e.g., DB not connected yet before step 1
    /// completes). This is best-effort incremental persistence.
    async fn persist_after_step(&self) {
        // Write bootstrap .env (always possible)
        if let Err(e) = self.write_bootstrap_env() {
            tracing::debug!("Could not write bootstrap env after step: {}", e);
        }

        // Persist to DB
        match self.persist_settings().await {
            Ok(true) => tracing::debug!("Settings persisted to database after step"),
            Ok(false) => tracing::debug!("No DB connection yet, skipping settings persist"),
            Err(e) => tracing::debug!("Could not persist settings after step: {}", e),
        }
    }

    /// Load previously saved settings from the database after Step 1
    /// establishes a connection.
    ///
    /// This enables recovery from partial onboarding runs: if the user
    /// completed steps 1-4 previously but step 5 failed, re-running
    /// the wizard will pre-populate settings from the database.
    ///
    /// **Callers must re-apply any wizard choices made before this call**
    /// via `self.settings.merge_from(&step_settings)`, since `merge_from`
    /// prefers the `other` argument's non-default values. Without this,
    /// stale DB values would overwrite fresh user choices.
    async fn try_load_existing_settings(&mut self) {
        let loaded = false;

        #[cfg(feature = "postgres")]
        let loaded = if !loaded {
            if let Some(ref pool) = self.db_pool {
                let store = crate::history::Store::from_pool(pool.clone());
                match store.get_all_settings(self.owner_id()).await {
                    Ok(db_map) if !db_map.is_empty() => {
                        let existing = Settings::from_db_map(&db_map);
                        self.settings.merge_from(&existing);
                        tracing::info!("Loaded {} existing settings from database", db_map.len());
                        true
                    }
                    Ok(_) => false,
                    Err(e) => {
                        tracing::debug!("Could not load existing settings: {}", e);
                        false
                    }
                }
            } else {
                false
            }
        } else {
            loaded
        };

        #[cfg(feature = "libsql")]
        let loaded = if !loaded {
            if let Some(ref backend) = self.db_backend {
                use crate::db::SettingsStore as _;
                match backend.get_all_settings(self.owner_id()).await {
                    Ok(db_map) if !db_map.is_empty() => {
                        let existing = Settings::from_db_map(&db_map);
                        self.settings.merge_from(&existing);
                        tracing::info!("Loaded {} existing settings from database", db_map.len());
                        true
                    }
                    Ok(_) => false,
                    Err(e) => {
                        tracing::debug!("Could not load existing settings: {}", e);
                        false
                    }
                }
            } else {
                false
            }
        } else {
            loaded
        };

        // Suppress unused variable warning when only one backend is compiled.
        let _ = loaded;
    }

    /// Save settings to the database and `~/.ironclaw/.env`, then print summary.
    async fn save_and_summarize(&mut self) -> Result<(), SetupError> {
        self.settings.onboard_completed = true;

        // Final persist (idempotent — earlier incremental saves already wrote
        // most settings, but this ensures onboard_completed is saved).
        let saved = self.persist_settings().await?;

        if !saved {
            return Err(SetupError::Database(
                "No database connection, cannot save settings".to_string(),
            ));
        }

        // Write bootstrap env (also idempotent)
        self.write_bootstrap_env()?;

        println!();
        print_success("Configuration saved to database");
        println!();

        // Print summary
        println!("Configuration Summary:");
        println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");

        let backend = self
            .settings
            .database_backend
            .as_deref()
            .unwrap_or("postgres");
        match backend {
            "libsql" => {
                if let Some(ref path) = self.settings.libsql_path {
                    println!("  Database: libSQL ({})", path);
                } else {
                    println!("  Database: libSQL (default path)");
                }
                if self.settings.libsql_url.is_some() {
                    println!("  Turso sync: enabled");
                }
            }
            _ => {
                if self.settings.database_url.is_some() {
                    println!("  Database: PostgreSQL (configured)");
                }
            }
        }

        match self.settings.secrets_master_key_source {
            KeySource::Keychain => println!("  Security: OS keychain"),
            KeySource::Env => println!("  Security: environment variable"),
            KeySource::None => println!("  Security: disabled"),
        }

        if let Some(ref provider) = self.settings.llm_backend {
            let display = match provider.as_str() {
                "nearai" => "NEAR AI",
                "anthropic" => "Anthropic",
                "openai" => "OpenAI",
                "ollama" => "Ollama",
                "openai_compatible" => "OpenAI-compatible",
                "bedrock" => "AWS Bedrock",
                other => other,
            };
            println!("  Provider: {}", display);
        }

        if let Some(ref model) = self.settings.selected_model {
            // Truncate long model names (char-based to avoid UTF-8 panic)
            let display = if model.chars().count() > 40 {
                let truncated: String = model.chars().take(37).collect();
                format!("{}...", truncated)
            } else {
                model.clone()
            };
            println!("  Model: {}", display);
        }

        if self.settings.embeddings.enabled {
            println!(
                "  Embeddings: {} ({})",
                self.settings.embeddings.provider, self.settings.embeddings.model
            );
        } else {
            println!("  Embeddings: disabled");
        }

        if let Some(ref tunnel_url) = self.settings.tunnel.public_url {
            println!("  Tunnel: {} (static)", tunnel_url);
        } else if let Some(ref provider) = self.settings.tunnel.provider {
            println!("  Tunnel: {} (managed, starts at boot)", provider);
        }

        let has_tunnel =
            self.settings.tunnel.public_url.is_some() || self.settings.tunnel.provider.is_some();

        println!("  Channels:");
        println!("    - CLI/TUI: enabled");

        if self.settings.channels.http_enabled {
            let port = self.settings.channels.http_port.unwrap_or(8080);
            println!("    - HTTP: enabled (port {})", port);
        }

        for channel_name in &self.settings.channels.wasm_channels {
            let mode = if has_tunnel { "webhook" } else { "polling" };
            println!(
                "    - {}: enabled ({})",
                capitalize_first(channel_name),
                mode
            );
        }

        if self.settings.heartbeat.enabled {
            println!(
                "  Heartbeat: every {} minutes",
                self.settings.heartbeat.interval_secs / 60
            );
        }

        println!();
        println!("To start the agent, run:");
        println!("  ironclaw");
        println!();
        println!("To change settings later:");
        println!("  ironclaw config set <setting> <value>");
        println!("  ironclaw onboard");
        println!();

        if self.config.quick {
            print_info(
                "Tip: Run `ironclaw onboard` to configure channels, extensions, embeddings, and more.",
            );
            println!();
        }

        Ok(())
    }
}

impl Default for SetupWizard {
    fn default() -> Self {
        Self::new()
    }
}

/// Mask password in a database URL for display.
#[cfg(feature = "postgres")]
fn mask_password_in_url(url: &str) -> String {
    // URL format: scheme://user:password@host/database
    // Find "://" to locate start of credentials
    let Some(scheme_end) = url.find("://") else {
        return url.to_string();
    };
    let credentials_start = scheme_end + 3; // After "://"

    // Find "@" to locate end of credentials
    let Some(at_pos) = url[credentials_start..].find('@') else {
        return url.to_string();
    };
    let at_abs = credentials_start + at_pos;

    // Find ":" in the credentials section (separates user from password)
    let credentials = &url[credentials_start..at_abs];
    let Some(colon_pos) = credentials.find(':') else {
        return url.to_string();
    };

    // Build masked URL: scheme://user:****@host/database
    let scheme = &url[..credentials_start]; // "postgres://"
    let username = &credentials[..colon_pos]; // "user"
    let after_at = &url[at_abs..]; // "@localhost/db"

    format!("{}{}:****{}", scheme, username, after_at)
}

/// Discover WASM channels in a directory.
///
/// Returns a list of (channel_name, capabilities_file) pairs.
async fn discover_wasm_channels(dir: &std::path::Path) -> Vec<(String, ChannelCapabilitiesFile)> {
    let mut channels = Vec::new();

    if !dir.is_dir() {
        return channels;
    }

    let mut entries = match tokio::fs::read_dir(dir).await {
        Ok(e) => e,
        Err(_) => return channels,
    };

    while let Ok(Some(entry)) = entries.next_entry().await {
        let path = entry.path();

        // Look for .capabilities.json files
        let filename = path.file_name().and_then(|n| n.to_str()).unwrap_or("");

        if !filename.ends_with(".capabilities.json") {
            continue;
        }

        // Extract channel name
        let name = filename.trim_end_matches(".capabilities.json").to_string();
        if name.is_empty() {
            continue;
        }

        // Check if corresponding .wasm file exists
        let wasm_path = dir.join(format!("{}.wasm", name));
        if !wasm_path.exists() {
            continue;
        }

        // Parse capabilities file
        match tokio::fs::read(&path).await {
            Ok(bytes) => match ChannelCapabilitiesFile::from_bytes(&bytes) {
                Ok(cap_file) => {
                    channels.push((name, cap_file));
                }
                Err(e) => {
                    tracing::warn!(
                        path = %path.display(),
                        error = %e,
                        "Failed to parse channel capabilities file"
                    );
                }
            },
            Err(e) => {
                tracing::warn!(
                    path = %path.display(),
                    error = %e,
                    "Failed to read channel capabilities file"
                );
            }
        }
    }

    // Sort by name for consistent ordering
    channels.sort_by(|a, b| a.0.cmp(&b.0));
    channels
}

/// Mask an API key for display: show first 6 + last 4 chars.
///
/// Uses char-based indexing to avoid panicking on multi-byte UTF-8.
fn mask_api_key(key: &str) -> String {
    let chars: Vec<char> = key.chars().collect();
    if chars.len() < 12 {
        let prefix: String = chars.iter().take(4).collect();
        return format!("{prefix}...");
    }
    let prefix: String = chars[..6].iter().collect();
    let suffix: String = chars[chars.len() - 4..].iter().collect();
    format!("{prefix}...{suffix}")
}

/// Capitalize the first letter of a string.
fn capitalize_first(s: &str) -> String {
    let mut chars = s.chars();
    match chars.next() {
        None => String::new(),
        Some(first) => first.to_uppercase().chain(chars).collect(),
    }
}

#[cfg(test)]
async fn install_missing_bundled_channels(
    channels_dir: &std::path::Path,
    already_installed: &HashSet<String>,
) -> Result<Vec<String>, SetupError> {
    let mut installed = Vec::new();

    for name in available_channel_names().iter().copied() {
        if already_installed.contains(name) {
            continue;
        }

        install_bundled_channel(name, channels_dir, false)
            .await
            .map_err(SetupError::Channel)?;
        installed.push(name.to_string());
    }

    Ok(installed)
}

/// Build channel options from discovered channels + bundled + registry catalog.
///
/// Returns a deduplicated, sorted list of channel names available for selection.
fn build_channel_options(discovered: &[(String, ChannelCapabilitiesFile)]) -> Vec<String> {
    let mut names: Vec<String> = discovered.iter().map(|(name, _)| name.clone()).collect();

    // Add bundled channels
    for bundled in available_channel_names().iter().copied() {
        if !names.iter().any(|name| name == bundled) {
            names.push(bundled.to_string());
        }
    }

    // Add registry channels
    if let Some(catalog) = load_registry_catalog() {
        for manifest in catalog.list(Some(crate::registry::manifest::ManifestKind::Channel), None) {
            if !names.iter().any(|n| n == &manifest.name) {
                names.push(manifest.name.clone());
            }
        }
    }

    names.sort();
    names
}

/// Try to load the registry catalog. Falls back to embedded manifests when
/// the `registry/` directory cannot be found (e.g. running from an installed binary).
fn load_registry_catalog() -> Option<crate::registry::catalog::RegistryCatalog> {
    crate::registry::catalog::RegistryCatalog::load_or_embedded().ok()
}

/// Install selected channels from the registry that aren't already on disk
/// and weren't handled by the bundled installer.
async fn install_selected_registry_channels(
    channels_dir: &std::path::Path,
    selected_channels: &[String],
    already_installed: &HashSet<String>,
) -> Vec<String> {
    let catalog = match load_registry_catalog() {
        Some(c) => c,
        None => return Vec::new(),
    };

    let repo_root = catalog
        .root()
        .parent()
        .unwrap_or(catalog.root())
        .to_path_buf();

    let bundled: HashSet<&str> = available_channel_names().iter().copied().collect();
    let mut installed = Vec::new();

    for name in selected_channels {
        // Skip if already installed or handled by bundled installer
        if already_installed.contains(name) || bundled.contains(name.as_str()) {
            continue;
        }

        // Check if already on disk (may have been installed between bundled and here)
        let wasm_on_disk = channels_dir.join(format!("{}.wasm", name)).exists()
            || channels_dir.join(format!("{}-channel.wasm", name)).exists();
        if wasm_on_disk {
            continue;
        }

        // Look up in registry
        let manifest = match catalog.get(&format!("channels/{}", name)) {
            Some(m) => m,
            None => continue,
        };

        let installer = crate::registry::installer::RegistryInstaller::new(
            repo_root.clone(),
            ironclaw_base_dir().join("tools"),
            channels_dir.to_path_buf(),
        );

        match installer
            .install_with_source_fallback(manifest, false)
            .await
        {
            Ok(outcome) => {
                for warning in &outcome.warnings {
                    crate::setup::prompts::print_info(&format!("{}: {}", name, warning));
                }
                installed.push(name.clone());
            }
            Err(e) => {
                tracing::warn!(
                    channel = %name,
                    error = %e,
                    "Failed to install channel from registry"
                );
                crate::setup::prompts::print_error(&format!(
                    "Failed to install channel '{}': {}",
                    name, e
                ));
            }
        }
    }

    installed
}

/// Discover which tools are already installed in the tools directory.
///
/// Returns a set of tool names (the stem of .wasm files).
async fn discover_installed_tools(tools_dir: &std::path::Path) -> HashSet<String> {
    let mut names = HashSet::new();

    if !tools_dir.is_dir() {
        return names;
    }

    let mut entries = match tokio::fs::read_dir(tools_dir).await {
        Ok(e) => e,
        Err(_) => return names,
    };

    while let Ok(Some(entry)) = entries.next_entry().await {
        let path = entry.path();
        if path.extension().and_then(|e| e.to_str()) == Some("wasm")
            && let Some(stem) = path.file_stem().and_then(|s| s.to_str())
        {
            names.insert(stem.to_string());
        }
    }

    names
}

async fn install_selected_bundled_channels(
    channels_dir: &std::path::Path,
    selected_channels: &[String],
    already_installed: &HashSet<String>,
) -> Result<Option<Vec<String>>, SetupError> {
    let bundled: HashSet<&str> = available_channel_names().iter().copied().collect();
    let selected_missing: HashSet<String> = selected_channels
        .iter()
        .filter(|name| bundled.contains(name.as_str()) && !already_installed.contains(*name))
        .cloned()
        .collect();

    if selected_missing.is_empty() {
        return Ok(None);
    }

    let mut installed = Vec::new();
    for name in selected_missing {
        install_bundled_channel(&name, channels_dir, false)
            .await
            .map_err(SetupError::Channel)?;
        installed.push(name);
    }

    installed.sort();
    Ok(Some(installed))
}

#[cfg(test)]
mod tests {
    use std::collections::HashSet;
    #[cfg(unix)]
    use std::ffi::OsString;

    use tempfile::tempdir;

    use super::*;
    use crate::config::helpers::ENV_MUTEX;

    #[test]
    fn test_wizard_creation() {
        let wizard = SetupWizard::new();
        assert!(!wizard.config.skip_auth);
        assert!(!wizard.config.channels_only);
    }

    #[test]
    fn test_wizard_with_config() {
        let config = SetupConfig {
            skip_auth: true,
            channels_only: false,
            provider_only: false,
            quick: false,
        };
        let wizard = SetupWizard::with_config(config);
        assert!(wizard.config.skip_auth);
    }

    #[test]
    fn test_wizard_owner_id_uses_resolved_env_scope() {
        let _guard = ENV_MUTEX.lock().unwrap_or_else(|e| e.into_inner());
        let _owner = EnvGuard::set("IRONCLAW_OWNER_ID", " wizard-owner ");

        let wizard = SetupWizard::new();
        assert_eq!(wizard.owner_id(), "wizard-owner"); // safety: test-only assertion
    }

    #[test]
    fn test_wizard_owner_id_uses_toml_scope() {
        let _guard = ENV_MUTEX.lock().unwrap_or_else(|e| e.into_inner());
        let _owner = EnvGuard::clear("IRONCLAW_OWNER_ID");
        let dir = tempdir().unwrap(); // safety: test-only tempdir setup
        let path = dir.path().join("config.toml");
        std::fs::write(&path, "owner_id = \"toml-owner\"\n").unwrap(); // safety: test-only fixture write

        let wizard = SetupWizard::try_with_config_and_toml(Default::default(), Some(&path))
            .expect("wizard should load owner_id from TOML"); // safety: test-only assertion
        assert_eq!(wizard.owner_id(), "toml-owner"); // safety: test-only assertion
    }

    #[test]
    #[cfg(unix)]
    fn test_try_with_config_and_toml_propagates_invalid_owner_env() {
        use std::os::unix::ffi::OsStringExt;

        let _guard = ENV_MUTEX.lock().unwrap_or_else(|e| e.into_inner());
        let original = std::env::var_os("IRONCLAW_OWNER_ID");
        unsafe {
            std::env::set_var("IRONCLAW_OWNER_ID", OsString::from_vec(vec![0x66, 0x80]));
        }

        let result = SetupWizard::try_with_config_and_toml(Default::default(), None);

        unsafe {
            if let Some(value) = original {
                std::env::set_var("IRONCLAW_OWNER_ID", value);
            } else {
                std::env::remove_var("IRONCLAW_OWNER_ID");
            }
        }

        assert!(result.is_err()); // safety: test-only assertion
    }

    #[test]
    #[cfg(feature = "postgres")]
    fn test_mask_password_in_url() {
        assert_eq!(
            mask_password_in_url("postgres://user:secret@localhost/db"),
            "postgres://user:****@localhost/db"
        );

        // URL without password
        assert_eq!(
            mask_password_in_url("postgres://localhost/db"),
            "postgres://localhost/db"
        );
    }

    #[test]
    fn test_capitalize_first() {
        assert_eq!(capitalize_first("telegram"), "Telegram");
        assert_eq!(capitalize_first("CAPS"), "CAPS");
        assert_eq!(capitalize_first(""), "");
    }

    #[test]
    fn test_mask_api_key() {
        assert_eq!(
            mask_api_key("sk-ant-api03-abcdef1234567890"),
            "sk-ant...7890"
        );
        assert_eq!(mask_api_key("short"), "shor...");
        assert_eq!(mask_api_key("exactly12ch"), "exac...");
        assert_eq!(mask_api_key("exactly12chr"), "exactl...2chr");
        assert_eq!(mask_api_key(""), "...");
        // Multi-byte chars should not panic
        assert_eq!(mask_api_key("日本語キー"), "日本語キ...");
    }

    #[tokio::test]
    async fn test_install_missing_bundled_channels_installs_telegram() {
        // WASM artifacts only exist in dev builds (not CI). Skip gracefully
        // rather than fail when the telegram channel hasn't been compiled.
        if !available_channel_names().contains(&"telegram") {
            eprintln!("skipping: telegram WASM artifacts not built");
            return;
        }

        let dir = tempdir().unwrap(); // safety: test-only tempdir setup
        let installed = HashSet::<String>::new();

        install_missing_bundled_channels(dir.path(), &installed)
            .await
            .unwrap(); // safety: test-only assertion

        assert!(dir.path().join("telegram.wasm").exists());
        assert!(dir.path().join("telegram.capabilities.json").exists());
    }

    #[test]
    fn test_build_channel_options_includes_available_when_missing() {
        let discovered = Vec::new();
        let options = build_channel_options(&discovered);
        let available = available_channel_names();
        // All available (built) channels should appear
        for name in &available {
            assert!(
                options.contains(&name.to_string()),
                "expected '{}' in options",
                name
            );
        }
    }

    #[test]
    fn test_build_channel_options_dedupes_available() {
        let discovered = vec![(String::from("telegram"), ChannelCapabilitiesFile::default())];
        let options = build_channel_options(&discovered);
        // telegram should appear exactly once despite being both discovered and available
        assert_eq!(
            options.iter().filter(|n| *n == "telegram").count(),
            1,
            "telegram should not be duplicated"
        );
    }

    #[tokio::test]
    async fn test_fetch_anthropic_models_static_fallback() {
        // With no API key, should return static defaults
        let _guard = EnvGuard::clear("ANTHROPIC_API_KEY");
        let models = fetch_anthropic_models(None).await;
        assert!(!models.is_empty());
        assert!(
            models.iter().any(|(id, _)| id.contains("claude")),
            "static defaults should include a Claude model"
        );
    }

    #[tokio::test]
    async fn test_fetch_openai_models_static_fallback() {
        let _guard = EnvGuard::clear("OPENAI_API_KEY");
        let models = fetch_openai_models(None).await;
        assert!(!models.is_empty());
        assert_eq!(models[0].0, "gpt-5.3-codex");
        assert!(
            models.iter().any(|(id, _)| id.contains("gpt")),
            "static defaults should include a GPT model"
        );
    }

    #[test]
    fn test_is_openai_chat_model_includes_gpt5_and_filters_non_chat_variants() {
        assert!(is_openai_chat_model("gpt-5"));
        assert!(is_openai_chat_model("gpt-5-mini-2026-01-01"));
        assert!(is_openai_chat_model("o3-2025-04-16"));
        assert!(!is_openai_chat_model("chatgpt-image-latest"));
        assert!(!is_openai_chat_model("gpt-4o-realtime-preview"));
        assert!(!is_openai_chat_model("gpt-4o-mini-transcribe"));
        assert!(!is_openai_chat_model("text-embedding-3-large"));
    }

    #[test]
    fn test_sort_openai_models_prioritizes_best_models_first() {
        let mut models = vec![
            ("gpt-4o-mini".to_string(), "gpt-4o-mini".to_string()),
            ("gpt-5-mini".to_string(), "gpt-5-mini".to_string()),
            ("o3".to_string(), "o3".to_string()),
            ("gpt-4.1".to_string(), "gpt-4.1".to_string()),
            ("gpt-5".to_string(), "gpt-5".to_string()),
        ];

        sort_openai_models(&mut models);

        let ordered: Vec<String> = models.into_iter().map(|(id, _)| id).collect();
        assert_eq!(
            ordered,
            vec![
                "gpt-5".to_string(),
                "gpt-5-mini".to_string(),
                "o3".to_string(),
                "gpt-4.1".to_string(),
                "gpt-4o-mini".to_string(),
            ]
        );
    }

    #[tokio::test]
    async fn test_fetch_ollama_models_unreachable_fallback() {
        // Point at a port nothing listens on
        let models = fetch_ollama_models("http://127.0.0.1:1").await;
        assert!(!models.is_empty(), "should fall back to static defaults");
    }

    #[tokio::test]
    async fn test_discover_wasm_channels_empty_dir() {
        let dir = tempdir().unwrap(); // safety: test-only tempdir setup
        let channels = discover_wasm_channels(dir.path()).await;
        assert!(channels.is_empty());
    }

    #[tokio::test]
    async fn test_discover_wasm_channels_nonexistent_dir() {
        let channels = discover_wasm_channels(
            &std::env::temp_dir().join("ironclaw_nonexistent_dir_abcxyz123"),
        )
        .await;
        assert!(channels.is_empty());
    }

    /// RAII guard that sets/clears an env var for the duration of a test.
    struct EnvGuard {
        key: &'static str,
        original: Option<String>,
    }

    impl EnvGuard {
        fn set(key: &'static str, value: &str) -> Self {
            let original = std::env::var(key).ok();
            unsafe {
                std::env::set_var(key, value);
            }
            Self { key, original }
        }

        fn clear(key: &'static str) -> Self {
            let original = std::env::var(key).ok();
            unsafe {
                std::env::remove_var(key);
            }
            Self { key, original }
        }
    }

    impl Drop for EnvGuard {
        fn drop(&mut self) {
            unsafe {
                if let Some(ref val) = self.original {
                    std::env::set_var(self.key, val);
                } else {
                    std::env::remove_var(self.key);
                }
            }
        }
    }

    #[test]
    fn test_set_llm_backend_preserves_model_when_backend_unchanged() {
        let mut wizard = SetupWizard::new();
        wizard.settings.llm_backend = Some("openai".to_string());
        wizard.settings.selected_model = Some("gpt-4o".to_string());

        wizard.set_llm_backend_preserving_model("openai");

        assert_eq!(wizard.settings.llm_backend.as_deref(), Some("openai"));
        assert_eq!(wizard.settings.selected_model.as_deref(), Some("gpt-4o"));
    }

    #[test]
    fn test_set_llm_backend_clears_model_when_backend_was_unset() {
        let mut wizard = SetupWizard::new();
        wizard.settings.selected_model = Some("gpt-4o".to_string());

        wizard.set_llm_backend_preserving_model("openai");

        assert_eq!(wizard.settings.llm_backend.as_deref(), Some("openai"));
        assert_eq!(wizard.settings.selected_model, None);
    }

    #[test]
    fn test_set_llm_backend_clears_model_when_backend_changes() {
        let mut wizard = SetupWizard::new();
        wizard.settings.llm_backend = Some("openai".to_string());
        wizard.settings.selected_model = Some("gpt-4o".to_string());

        wizard.set_llm_backend_preserving_model("anthropic");

        assert_eq!(wizard.settings.llm_backend.as_deref(), Some("anthropic"));
        assert_eq!(wizard.settings.selected_model, None);
    }

    /// Regression test for #600: re-running provider setup for the same backend
    /// must NOT clear selected_model. Only switching to a different backend should.
    #[test]
    fn test_same_provider_preserves_selected_model() {
        let mut wizard = SetupWizard::new();
        wizard.settings.llm_backend = Some("ollama".to_string());
        wizard.settings.selected_model = Some("llama3".to_string());

        // Simulate re-entering the same provider -- model should survive
        // (This is the check that each setup_* function now performs)
        if wizard.settings.llm_backend.as_deref() != Some("ollama") {
            wizard.settings.selected_model = None;
        }
        wizard.settings.llm_backend = Some("ollama".to_string());

        assert_eq!(
            wizard.settings.selected_model.as_deref(),
            Some("llama3"),
            "model should be preserved when re-selecting the same provider"
        );
    }

    /// Regression test for #600: switching to a different provider must clear
    /// selected_model since the old model may not be valid for the new backend.
    #[test]
    fn test_different_provider_clears_selected_model() {
        let mut wizard = SetupWizard::new();
        wizard.settings.llm_backend = Some("ollama".to_string());
        wizard.settings.selected_model = Some("llama3".to_string());

        // Simulate switching to a different provider -- model should be cleared
        if wizard.settings.llm_backend.as_deref() != Some("openai") {
            wizard.settings.selected_model = None;
        }
        wizard.settings.llm_backend = Some("openai".to_string());

        assert!(
            wizard.settings.selected_model.is_none(),
            "model should be cleared when switching providers"
        );
    }

    /// Regression: Bedrock setup_bedrock() should preserve selected_model
    /// when re-entering the same provider (matches pattern from #600).
    #[test]
    fn test_bedrock_same_provider_preserves_model() {
        let mut wizard = SetupWizard::new();
        wizard.settings.llm_backend = Some("bedrock".to_string());
        wizard.settings.selected_model = Some("anthropic.claude-opus-4-6-v1".to_string());

        // Simulate the conditional clearing logic from setup_bedrock()
        if wizard.settings.llm_backend.as_deref() != Some("bedrock") {
            wizard.settings.selected_model = None;
        }
        wizard.settings.llm_backend = Some("bedrock".to_string());

        assert_eq!(
            wizard.settings.selected_model.as_deref(),
            Some("anthropic.claude-opus-4-6-v1"),
            "bedrock model should be preserved when re-selecting bedrock"
        );
    }

    /// Regression: switching from another provider to bedrock must clear
    /// selected_model, and choosing "default credentials" must clear
    /// bedrock_profile.
    #[test]
    fn test_bedrock_clears_stale_profile_on_default_creds() {
        let mut wizard = SetupWizard::new();
        wizard.settings.llm_backend = Some("bedrock".to_string());
        wizard.settings.bedrock_profile = Some("old-sso-profile".to_string());

        // Simulate auth_choice == 0 (default credentials) clearing the profile
        wizard.settings.bedrock_profile = None;

        assert!(
            wizard.settings.bedrock_profile.is_none(),
            "bedrock_profile should be cleared when selecting default credentials"
        );
    }

    /// Regression: empty profile input in named-profile auth should clear
    /// any previously configured profile instead of leaving it stale.
    #[test]
    fn test_bedrock_empty_profile_clears_existing() {
        let mut wizard = SetupWizard::new();
        wizard.settings.bedrock_profile = Some("old-profile".to_string());

        // Simulate auth_choice == 1 with empty input
        let profile = "".to_string();
        if profile.trim().is_empty() {
            wizard.settings.bedrock_profile = None;
        } else {
            wizard.settings.bedrock_profile = Some(profile);
        }

        assert!(
            wizard.settings.bedrock_profile.is_none(),
            "empty profile input should clear existing bedrock_profile"
        );
    }

    #[tokio::test]
    async fn test_run_provider_setup_no_setup_hint() {
        // A provider with setup: None should not error. It should set the
        // backend and return Ok, allowing env-var-only configured providers
        // to be kept during re-onboarding.
        let mut wizard = SetupWizard::new();

        let mut providers: Vec<crate::llm::registry::ProviderDefinition> =
            serde_json::from_str(include_str!("../../providers.json")).unwrap();
        // Add a provider with no setup hint
        providers.push(crate::llm::registry::ProviderDefinition {
            id: "custom_no_setup".to_string(),
            aliases: vec![],
            protocol: crate::llm::registry::ProviderProtocol::OpenAiCompletions,
            default_base_url: Some("http://localhost:9999/v1".to_string()),
            base_url_env: None,
            base_url_required: false,
            api_key_env: None,
            api_key_required: false,
            model_env: "CUSTOM_MODEL".to_string(),
            default_model: "custom-model".to_string(),
            description: "Custom provider with no setup wizard".to_string(),
            extra_headers_env: None,
            setup: None,
            unsupported_params: vec![],
        });
        let registry = crate::llm::ProviderRegistry::new(providers);

        let result = wizard
            .run_provider_setup("custom_no_setup", &registry)
            .await;
        assert!(result.is_ok(), "setup: None provider should not error");
        assert_eq!(
            wizard.settings.llm_backend.as_deref(),
            Some("custom_no_setup"),
            "backend should be set even without setup hint"
        );
    }

    /// Regression test for #666: env-var security option must initialize
    /// secrets_crypto so subsequent steps can encrypt API keys.
    #[test]
    fn test_env_var_security_initializes_crypto() {
        use crate::secrets::SecretsCrypto;
        use secrecy::SecretString;

        // Simulate what option 1 in step_security() does after the fix:
        let key_hex = crate::secrets::keychain::generate_master_key_hex();

        // The fix: create SecretsCrypto from the generated key.
        // Before the fix, this was skipped, leaving secrets_crypto = None.
        let crypto = SecretsCrypto::new(SecretString::from(key_hex.clone()));
        assert!(
            crypto.is_ok(),
            "generated key hex must produce valid SecretsCrypto"
        );

        // Verify the key is stored for bootstrap env persistence.
        let settings = Settings {
            secrets_master_key_hex: Some(key_hex),
            ..Settings::default()
        };
        assert!(settings.secrets_master_key_hex.is_some());
    }

    /// Regression test for #799: `fetch_nearai_models` hardcoded `api_key: None`,
    /// causing the auth prompt to re-appear during model selection when the user
    /// had authenticated via NEAR AI Cloud API key (option 4).
    #[test]
    fn test_build_nearai_model_fetch_config_picks_up_api_key_env() {
        use secrecy::ExposeSecret;

        let _lock = ENV_MUTEX.lock().unwrap();
        let _guard = EnvGuard::set("NEARAI_API_KEY", "test-cloud-api-key-12345");
        let _guard2 = EnvGuard::clear("NEARAI_BASE_URL");

        let config = build_nearai_model_fetch_config();
        assert!(
            config.nearai.api_key.is_some(),
            "config should include NEARAI_API_KEY from env"
        );
        assert_eq!(
            config.nearai.api_key.as_ref().unwrap().expose_secret(),
            "test-cloud-api-key-12345"
        );
        // With API key, base_url must point to cloud-api (not private.near.ai)
        assert_eq!(
            config.nearai.base_url, "https://cloud-api.near.ai",
            "API key auth must use cloud-api base URL for model fetching"
        );
    }

    /// Regression test for #799: when NEARAI_API_KEY is absent or empty,
    /// the config should have `api_key: None` (session token path).
    #[test]
    fn test_build_nearai_model_fetch_config_none_when_no_api_key() {
        let _lock = ENV_MUTEX.lock().unwrap();
        let _guard = EnvGuard::clear("NEARAI_API_KEY");
        let _guard2 = EnvGuard::clear("NEARAI_BASE_URL");

        let config = build_nearai_model_fetch_config();
        assert!(
            config.nearai.api_key.is_none(),
            "config should have no api_key when env var is absent"
        );
        // Without API key, base_url must point to private.near.ai (session token)
        assert_eq!(
            config.nearai.base_url, "https://private.near.ai",
            "session-token auth must use private.near.ai base URL"
        );
    }

    /// Regression test for #799: empty NEARAI_API_KEY should be treated as absent.
    #[test]
    fn test_build_nearai_model_fetch_config_none_when_empty_api_key() {
        let _lock = ENV_MUTEX.lock().unwrap();
        let _guard = EnvGuard::set("NEARAI_API_KEY", "");

        let config = build_nearai_model_fetch_config();
        assert!(
            config.nearai.api_key.is_none(),
            "config should have no api_key when env var is empty"
        );
    }
}
