Remove unused useShallow import to fix tsc build

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -72,7 +72,7 @@ docker exec stdout → tokio task → emit("terminal-output-{sessionId}") → li
   - `container.rs` — Container lifecycle (create, start, stop, remove, inspect)
   - `exec.rs` — PTY exec sessions with bidirectional stdin/stdout streaming
   - `image.rs` — Image build/pull with progress streaming
-- **`models/`** — Serde structs (`Project`, `AuthMode`, `BedrockConfig`, `OllamaConfig`, `LiteLlmConfig`, `ContainerInfo`, `AppSettings`). These define the IPC contract with the frontend.
+- **`models/`** — Serde structs (`Project`, `Backend`, `BedrockConfig`, `OllamaConfig`, `LiteLlmConfig`, `ContainerInfo`, `AppSettings`). These define the IPC contract with the frontend.
 - **`storage/`** — Persistence: `projects_store.rs` (JSON file with atomic writes), `secure.rs` (OS keychain via `keyring` crate), `settings_store.rs`
 
 ### Container (`container/`)

HOW-TO-USE.md

@@ -4,6 +4,25 @@ Triple-C (Claude-Code-Container) is a desktop application that runs Claude Code
 
 ---
 
+## Table of Contents
+
+- [Prerequisites](#prerequisites)
+- [First Launch](#first-launch)
+- [The Interface](#the-interface)
+- [Project Management](#project-management)
+- [Project Configuration](#project-configuration)
+- [MCP Servers (Beta)](#mcp-servers-beta)
+- [AWS Bedrock Configuration](#aws-bedrock-configuration)
+- [Ollama Configuration](#ollama-configuration)
+- [LiteLLM Configuration](#litellm-configuration)
+- [Settings](#settings)
+- [Terminal Features](#terminal-features)
+- [Scheduled Tasks (Inside the Container)](#scheduled-tasks-inside-the-container)
+- [What's Inside the Container](#whats-inside-the-container)
+- [Troubleshooting](#troubleshooting)
+
+---
+
 ## Prerequisites
 
 ### Docker
@@ -86,21 +105,22 @@ Claude Code launches automatically with `--dangerously-skip-permissions` inside
 **AWS Bedrock:**
 
 1. Stop the container first (settings can only be changed while stopped).
-2. In the project card, switch the auth mode to **Bedrock**.
+2. In the project card, switch the backend to **Bedrock**.
 3. Expand the **Config** panel and fill in your AWS credentials (see [AWS Bedrock Configuration](#aws-bedrock-configuration) below).
 4. Start the container again.
 
 **Ollama:**
 
 1. Stop the container first (settings can only be changed while stopped).
-2. In the project card, switch the auth mode to **Ollama**.
+2. In the project card, switch the backend to **Ollama**.
-3. Expand the **Config** panel and set the base URL of your Ollama server (defaults to `http://host.docker.internal:11434` for a local instance). Optionally set a model ID.
+3. Expand the **Config** panel and set the base URL of your Ollama server (defaults to `http://host.docker.internal:11434` for a local instance). Set the **Model ID** to the model you want to use (required).
-4. Start the container again.
+4. Make sure the model has been pulled in Ollama (e.g., `ollama pull qwen3.5:27b`) or used via Ollama cloud before starting.
+5. Start the container again.
 
 **LiteLLM:**
 
 1. Stop the container first (settings can only be changed while stopped).
-2. In the project card, switch the auth mode to **LiteLLM**.
+2. In the project card, switch the backend to **LiteLLM**.
 3. Expand the **Config** panel and set the base URL of your LiteLLM proxy (defaults to `http://host.docker.internal:4000`). Optionally set an API key and model ID.
 4. Start the container again.
 
@@ -361,7 +381,7 @@ MCP server configuration is tracked via SHA-256 fingerprints stored as Docker la
 
 ## AWS Bedrock Configuration
 
-To use Claude via AWS Bedrock instead of Anthropic's API, switch the auth mode to **Bedrock** on the project card.
+To use Claude via AWS Bedrock instead of Anthropic's API, switch the backend to **Bedrock** on the project card.
 
 ### Authentication Methods
 
@@ -390,12 +410,12 @@ Per-project settings always override these global defaults.
 
 ## Ollama Configuration
 
-To use Claude Code with a local or remote Ollama server, switch the auth mode to **Ollama** on the project card.
+To use Claude Code with a local or remote Ollama server, switch the backend to **Ollama** on the project card.
 
 ### Settings
 
 - **Base URL** — The URL of your Ollama server. Defaults to `http://host.docker.internal:11434`, which reaches a locally running Ollama instance from inside the container. For a remote server, use its IP or hostname (e.g., `http://192.168.1.100:11434`).
-- **Model ID** — Optional. Override the model to use (e.g., `qwen3.5:27b`).
+- **Model ID** — **Required.** The model to use (e.g., `qwen3.5:27b`). The model must be pulled in Ollama before use — run `ollama pull <model>` or use it via Ollama cloud so it is available when the container starts.
 
 ### How It Works
 
@@ -403,11 +423,13 @@ Triple-C sets `ANTHROPIC_BASE_URL` to point Claude Code at your Ollama server in
 
 > **Note:** Ollama support is best-effort. Claude Code is designed for Anthropic models, so some features (tool use, extended thinking, prompt caching, etc.) may not work as expected with non-Anthropic models.
 
+> **Important:** The model must already be available in Ollama before starting the container. If using a local Ollama instance, pull the model first with `ollama pull <model-name>`. If using Ollama's cloud service, ensure the model has been used at least once so it is cached.
+
 ---
 
 ## LiteLLM Configuration
 
-To use Claude Code through a [LiteLLM](https://docs.litellm.ai/) proxy gateway, switch the auth mode to **LiteLLM** on the project card. LiteLLM supports 100+ model providers (OpenAI, Gemini, Anthropic, and more) through a single proxy.
+To use Claude Code through a [LiteLLM](https://docs.litellm.ai/) proxy gateway, switch the backend to **LiteLLM** on the project card. LiteLLM supports 100+ model providers (OpenAI, Gemini, Anthropic, and more) through a single proxy.
 
 ### Settings
 
@@ -622,3 +644,13 @@ You can install additional tools at runtime with `sudo apt install`, `pip instal
 - Ensure the Docker image for the MCP server exists (pull it first if needed).
 - Check that Docker socket access is available (stdio + Docker MCP servers auto-enable this).
 - Try resetting the project container to force a clean recreation.
+
+### "Failed to install Anthropic marketplace" Error
+
+If Claude Code shows **"Failed to install Anthropic marketplace - Will retry on next startup"** repeatedly, the marketplace metadata in `~/.claude.json` may be corrupted. To fix this, open a **Shell** session in the project and run:
+
+```bash
+cp ~/.claude.json ~/.claude.json.bak && jq 'with_entries(select(.key | startswith("officialMarketplace") | not))' ~/.claude.json.bak > ~/.claude.json
+```
+
+This backs up your config and removes the corrupted marketplace entries. Claude Code will re-download them cleanly on the next startup.

README.md

@@ -49,7 +49,7 @@ Each project can independently use one of:
 
 - **Anthropic** (OAuth): User runs `claude login` inside the terminal on first use. Token persisted in the config volume across restarts and resets.
 - **AWS Bedrock**: Per-project AWS credentials (static keys, profile, or bearer token). SSO sessions are validated before launching Claude for Profile auth.
-- **Ollama**: Connect to a local or remote Ollama server via `ANTHROPIC_BASE_URL` (e.g., `http://host.docker.internal:11434`). Optional model override.
+- **Ollama**: Connect to a local or remote Ollama server via `ANTHROPIC_BASE_URL` (e.g., `http://host.docker.internal:11434`). Requires a model ID, and the model must be pulled (or used via Ollama cloud) before starting the container.
 - **LiteLLM**: Connect through a LiteLLM proxy gateway via `ANTHROPIC_BASE_URL` + `ANTHROPIC_AUTH_TOKEN` to access 100+ model providers. API key stored securely in OS keychain.
 
 > **Note:** Ollama and LiteLLM support is best-effort. Claude Code is designed for Anthropic models, so some features (tool use, extended thinking, prompt caching, etc.) may not work as expected with non-Anthropic models behind these backends.
@@ -102,7 +102,7 @@ Users can override this in Settings via the global `docker_socket_path` option.
 | `app/src/components/layout/TopBar.tsx` | Terminal tabs + Docker/Image status indicators |
 | `app/src/components/layout/Sidebar.tsx` | Responsive sidebar (25% width, min 224px, max 320px) |
 | `app/src/components/layout/StatusBar.tsx` | Running project/terminal counts |
-| `app/src/components/projects/ProjectCard.tsx` | Project config, auth mode, action buttons |
+| `app/src/components/projects/ProjectCard.tsx` | Project config, backend selector, action buttons |
 | `app/src/components/projects/ProjectList.tsx` | Project list in sidebar |
 | `app/src/components/projects/FileManagerModal.tsx` | File browser modal (browse, download, upload) |
 | `app/src/components/projects/ContainerProgressModal.tsx` | Real-time container operation progress |
@@ -122,7 +122,7 @@ Users can override this in Settings via the global `docker_socket_path` option.
 | `app/src-tauri/src/commands/project_commands.rs` | Start/stop/rebuild Tauri command handlers |
 | `app/src-tauri/src/commands/file_commands.rs` | File manager Tauri commands (list, download, upload) |
 | `app/src-tauri/src/commands/mcp_commands.rs` | MCP server CRUD Tauri commands |
-| `app/src-tauri/src/models/project.rs` | Project struct (auth mode, Docker access, MCP servers, Mission Control) |
+| `app/src-tauri/src/models/project.rs` | Project struct (backend, Docker access, MCP servers, Mission Control) |
 | `app/src-tauri/src/models/mcp_server.rs` | MCP server struct (transport, Docker image, env vars) |
 | `app/src-tauri/src/models/app_settings.rs` | Global settings (image source, Docker socket, AWS, microphone) |
 | `app/src-tauri/src/storage/mcp_store.rs` | MCP server persistence (JSON with atomic writes) |

TECHNICAL.md

@@ -290,7 +290,7 @@ triple-c/
             │   ├── image.rs       # Build from Dockerfile, pull from registry
             │   └── network.rs     # Per-project bridge networks for MCP
             ├── models/            # Data structures
-            │   ├── project.rs     # Project, AuthMode, BedrockConfig
+            │   ├── project.rs     # Project, Backend, BedrockConfig
             │   ├── mcp_server.rs  # MCP server configuration
             │   ├── app_settings.rs # Global settings (image source, AWS, etc.)
             │   ├── container_config.rs # Image name resolution

app/src-tauri/src/commands/help_commands.rs

@@ -0,0 +1,60 @@
+use std::sync::OnceLock;
+use tokio::sync::Mutex;
+
+const HELP_URL: &str =
+    "https://repo.anhonesthost.net/cybercovellc/triple-c/raw/branch/main/HOW-TO-USE.md";
+
+const EMBEDDED_HELP: &str = include_str!("../../../../HOW-TO-USE.md");
+
+/// Cached help content fetched from the remote repo (or `None` if not yet fetched).
+static CACHED_HELP: OnceLock<Mutex<Option<String>>> = OnceLock::new();
+
+/// Return the help markdown content.
+///
+/// On the first call, tries to fetch the latest version from the gitea repo.
+/// If that fails (network error, timeout, etc.), falls back to the version
+/// embedded at compile time. The result is cached for the rest of the session.
+#[tauri::command]
+pub async fn get_help_content() -> Result<String, String> {
+    let mutex = CACHED_HELP.get_or_init(|| Mutex::new(None));
+    let mut guard = mutex.lock().await;
+
+    if let Some(ref cached) = *guard {
+        return Ok(cached.clone());
+    }
+
+    let content = match fetch_remote_help().await {
+        Ok(md) => {
+            log::info!("Loaded help content from remote repo");
+            md
+        }
+        Err(e) => {
+            log::info!("Using embedded help content (remote fetch failed: {})", e);
+            EMBEDDED_HELP.to_string()
+        }
+    };
+
+    *guard = Some(content.clone());
+    Ok(content)
+}
+
+async fn fetch_remote_help() -> Result<String, String> {
+    let client = reqwest::Client::builder()
+        .timeout(std::time::Duration::from_secs(10))
+        .build()
+        .map_err(|e| format!("Failed to create HTTP client: {}", e))?;
+
+    let resp = client
+        .get(HELP_URL)
+        .send()
+        .await
+        .map_err(|e| format!("Failed to fetch help content: {}", e))?;
+
+    if !resp.status().is_success() {
+        return Err(format!("Remote returned status {}", resp.status()));
+    }
+
+    resp.text()
+        .await
+        .map_err(|e| format!("Failed to read response body: {}", e))
+}

app/src-tauri/src/commands/mod.rs

@@ -1,6 +1,7 @@
 pub mod aws_commands;
 pub mod docker_commands;
 pub mod file_commands;
+pub mod help_commands;
 pub mod mcp_commands;
 pub mod project_commands;
 pub mod settings_commands;

app/src-tauri/src/commands/project_commands.rs

@@ -1,7 +1,7 @@
 use tauri::{Emitter, State};
 
 use crate::docker;
-use crate::models::{container_config, AuthMode, McpServer, Project, ProjectPath, ProjectStatus};
+use crate::models::{container_config, Backend, McpServer, Project, ProjectPath, ProjectStatus};
 use crate::storage::secure;
 use crate::AppState;
 
@@ -179,27 +179,27 @@ pub async fn start_project_container(
     // Resolve enabled MCP servers for this project
     let (enabled_mcp, docker_mcp) = resolve_mcp_servers(&project, &state);
 
-    // Validate auth mode requirements
+    // Validate backend requirements
-    if project.auth_mode == AuthMode::Bedrock {
+    if project.backend == Backend::Bedrock {
         let bedrock = project.bedrock_config.as_ref()
-            .ok_or_else(|| "Bedrock auth mode selected but no Bedrock configuration found.".to_string())?;
+            .ok_or_else(|| "Bedrock backend selected but no Bedrock configuration found.".to_string())?;
         // Region can come from per-project or global
         if bedrock.aws_region.is_empty() && settings.global_aws.aws_region.is_none() {
-            return Err("AWS region is required for Bedrock auth mode. Set it per-project or in global AWS settings.".to_string());
+            return Err("AWS region is required for Bedrock backend. Set it per-project or in global AWS settings.".to_string());
         }
     }
 
-    if project.auth_mode == AuthMode::Ollama {
+    if project.backend == Backend::Ollama {
         let ollama = project.ollama_config.as_ref()
-            .ok_or_else(|| "Ollama auth mode selected but no Ollama configuration found.".to_string())?;
+            .ok_or_else(|| "Ollama backend selected but no Ollama configuration found.".to_string())?;
         if ollama.base_url.is_empty() {
             return Err("Ollama base URL is required.".to_string());
         }
     }
 
-    if project.auth_mode == AuthMode::LiteLlm {
+    if project.backend == Backend::LiteLlm {
         let litellm = project.litellm_config.as_ref()
-            .ok_or_else(|| "LiteLLM auth mode selected but no LiteLLM configuration found.".to_string())?;
+            .ok_or_else(|| "LiteLLM backend selected but no LiteLLM configuration found.".to_string())?;
         if litellm.base_url.is_empty() {
             return Err("LiteLLM base URL is required.".to_string());
         }

app/src-tauri/src/commands/terminal_commands.rs

@@ -1,6 +1,6 @@
 use tauri::{AppHandle, Emitter, State};
 
-use crate::models::{AuthMode, BedrockAuthMethod, Project};
+use crate::models::{Backend, BedrockAuthMethod, Project};
 use crate::AppState;
 
 /// Build the command to run in the container terminal.
@@ -9,7 +9,7 @@ use crate::AppState;
 /// the AWS session first. If the SSO session is expired, runs `aws sso login`
 /// so the user can re-authenticate (the URL is clickable via xterm.js WebLinksAddon).
 fn build_terminal_cmd(project: &Project, state: &AppState) -> Vec<String> {
-    let is_bedrock_profile = project.auth_mode == AuthMode::Bedrock
+    let is_bedrock_profile = project.backend == Backend::Bedrock
         && project
             .bedrock_config
             .as_ref()

app/src-tauri/src/commands/update_commands.rs

@@ -1,8 +1,16 @@
-use crate::models::{GiteaRelease, ReleaseAsset, UpdateInfo};
+use tauri::State;
+
+use crate::docker;
+use crate::models::{container_config, GiteaRelease, ImageUpdateInfo, ReleaseAsset, UpdateInfo};
+use crate::AppState;
 
 const RELEASES_URL: &str =
     "https://repo.anhonesthost.net/api/v1/repos/cybercovellc/triple-c/releases";
 
+/// Gitea container-registry tag object (v2 manifest).
+const REGISTRY_API_BASE: &str =
+    "https://repo.anhonesthost.net/v2/cybercovellc/triple-c/triple-c-sandbox";
+
 #[tauri::command]
 pub fn get_app_version() -> String {
     env!("CARGO_PKG_VERSION").to_string()
@@ -26,30 +34,37 @@ pub async fn check_for_updates() -> Result<Option<UpdateInfo>, String> {
         .map_err(|e| format!("Failed to parse releases: {}", e))?;
 
     let current_version = env!("CARGO_PKG_VERSION");
-    let is_windows = cfg!(target_os = "windows");
+    let current_semver = parse_semver(current_version).unwrap_or((0, 0, 0));
+
+    // Determine platform suffix for tag filtering
+    let platform_suffix: &str = if cfg!(target_os = "windows") {
+        "-win"
+    } else if cfg!(target_os = "macos") {
+        "-mac"
+    } else {
+        "" // Linux uses bare tags (no suffix)
+    };
 
     // Filter releases by platform tag suffix
     let platform_releases: Vec<&GiteaRelease> = releases
         .iter()
         .filter(|r| {
-            if is_windows {
+            if platform_suffix.is_empty() {
-                r.tag_name.ends_with("-win")
+                // Linux: bare tag only (no -win, no -mac)
+                !r.tag_name.ends_with("-win") && !r.tag_name.ends_with("-mac")
             } else {
-                !r.tag_name.ends_with("-win")
+                r.tag_name.ends_with(platform_suffix)
             }
         })
         .collect();
 
-    // Find the latest release with a higher patch version
+    // Find the latest release with a higher semver version
-    // Version format: 0.1.X or v0.1.X (tag may have prefix/suffix)
+    let mut best: Option<(&GiteaRelease, (u32, u32, u32))> = None;
-    let current_patch = parse_patch_version(current_version).unwrap_or(0);
-
-    let mut best: Option<(&GiteaRelease, u32)> = None;
     for release in &platform_releases {
-        if let Some(patch) = parse_patch_from_tag(&release.tag_name) {
+        if let Some(ver) = parse_semver_from_tag(&release.tag_name) {
-            if patch > current_patch {
+            if ver > current_semver {
-                if best.is_none() || patch > best.unwrap().1 {
+                if best.is_none() || ver > best.unwrap().1 {
-                    best = Some((release, patch));
+                    best = Some((release, ver));
                 }
             }
         }
@@ -84,34 +99,125 @@ pub async fn check_for_updates() -> Result<Option<UpdateInfo>, String> {
     }
 }
 
-/// Parse patch version from a semver string like "0.1.5" -> 5
+/// Parse a semver string like "0.2.5" -> (0, 2, 5)
-fn parse_patch_version(version: &str) -> Option<u32> {
+fn parse_semver(version: &str) -> Option<(u32, u32, u32)> {
     let clean = version.trim_start_matches('v');
     let parts: Vec<&str> = clean.split('.').collect();
     if parts.len() >= 3 {
-        parts[2].parse().ok()
+        let major = parts[0].parse().ok()?;
+        let minor = parts[1].parse().ok()?;
+        let patch = parts[2].parse().ok()?;
+        Some((major, minor, patch))
     } else {
         None
     }
 }
 
-/// Parse patch version from a tag like "v0.1.5", "v0.1.5-win", "0.1.5" -> 5
+/// Parse semver from a tag like "v0.2.5", "v0.2.5-win", "v0.2.5-mac" -> (0, 2, 5)
-fn parse_patch_from_tag(tag: &str) -> Option<u32> {
+fn parse_semver_from_tag(tag: &str) -> Option<(u32, u32, u32)> {
     let clean = tag.trim_start_matches('v');
     // Remove platform suffix
-    let clean = clean.strip_suffix("-win").unwrap_or(clean);
+    let clean = clean.strip_suffix("-win")
-    parse_patch_version(clean)
+        .or_else(|| clean.strip_suffix("-mac"))
+        .unwrap_or(clean);
+    parse_semver(clean)
 }
 
-/// Extract a clean version string from a tag like "v0.1.5-win" -> "0.1.5"
+/// Extract a clean version string from a tag like "v0.2.5-win" -> "0.2.5"
 fn extract_version_from_tag(tag: &str) -> Option<String> {
-    let clean = tag.trim_start_matches('v');
+    let (major, minor, patch) = parse_semver_from_tag(tag)?;
-    let clean = clean.strip_suffix("-win").unwrap_or(clean);
+    Some(format!("{}.{}.{}", major, minor, patch))
-    // Validate it looks like a version
+}
-    let parts: Vec<&str> = clean.split('.').collect();
+
-    if parts.len() >= 3 && parts.iter().all(|p| p.parse::<u32>().is_ok()) {
+/// Check whether a newer container image is available in the registry.
-        Some(clean.to_string())
+///
-    } else {
+/// Compares the local image digest with the remote registry digest using the
-        None
+/// Docker Registry HTTP API v2.  Only applies when the image source is
+/// "registry" (the default); for local builds or custom images we cannot
+/// meaningfully check for remote updates.
+#[tauri::command]
+pub async fn check_image_update(
+    state: State<'_, AppState>,
+) -> Result<Option<ImageUpdateInfo>, String> {
+    let settings = state.settings_store.get();
+
+    // Only check for registry images
+    if settings.image_source != crate::models::app_settings::ImageSource::Registry {
+        return Ok(None);
+    }
+
+    let image_name =
+        container_config::resolve_image_name(&settings.image_source, &settings.custom_image_name);
+
+    // 1. Get local image digest via Docker
+    let local_digest = docker::get_local_image_digest(&image_name).await.ok().flatten();
+
+    // 2. Get remote digest from the Gitea container registry (OCI distribution spec)
+    let remote_digest = fetch_remote_digest("latest").await?;
+
+    // No remote digest available — nothing to compare
+    let remote_digest = match remote_digest {
+        Some(d) => d,
+        None => return Ok(None),
+    };
+
+    // If local digest matches remote, no update
+    if let Some(ref local) = local_digest {
+        if *local == remote_digest {
+            return Ok(None);
+        }
+    }
+
+    // There's a difference (or no local image at all)
+    Ok(Some(ImageUpdateInfo {
+        remote_digest,
+        local_digest,
+        remote_updated_at: None,
+    }))
+}
+
+/// Fetch the digest of a tag from the Gitea container registry using the
+/// OCI / Docker Registry HTTP API v2.
+///
+/// We issue a HEAD request to /v2/<repo>/manifests/<tag> and read the
+/// `Docker-Content-Digest` header that the registry returns.
+async fn fetch_remote_digest(tag: &str) -> Result<Option<String>, String> {
+    let url = format!("{}/manifests/{}", REGISTRY_API_BASE, tag);
+
+    let client = reqwest::Client::builder()
+        .timeout(std::time::Duration::from_secs(15))
+        .build()
+        .map_err(|e| format!("Failed to create HTTP client: {}", e))?;
+
+    let response = client
+        .head(&url)
+        .header(
+            "Accept",
+            "application/vnd.docker.distribution.manifest.v2+json, application/vnd.oci.image.index.v1+json",
+        )
+        .send()
+        .await;
+
+    match response {
+        Ok(resp) => {
+            if !resp.status().is_success() {
+                log::warn!(
+                    "Registry returned status {} when checking image digest",
+                    resp.status()
+                );
+                return Ok(None);
+            }
+            // The digest is returned in the Docker-Content-Digest header
+            if let Some(digest) = resp.headers().get("docker-content-digest") {
+                if let Ok(val) = digest.to_str() {
+                    return Ok(Some(val.to_string()));
+                }
+            }
+            Ok(None)
+        }
+        Err(e) => {
+            log::warn!("Failed to check registry for image update: {}", e);
+            Ok(None)
+        }
     }
 }

app/src-tauri/src/docker/container.rs

@@ -8,7 +8,7 @@ use std::collections::HashMap;
 use sha2::{Sha256, Digest};
 
 use super::client::get_docker;
-use crate::models::{AuthMode, BedrockAuthMethod, ContainerInfo, EnvVar, GlobalAwsSettings, McpServer, McpTransportType, PortMapping, Project, ProjectPath};
+use crate::models::{Backend, BedrockAuthMethod, ContainerInfo, EnvVar, GlobalAwsSettings, McpServer, McpTransportType, PortMapping, Project, ProjectPath};
 
 const SCHEDULER_INSTRUCTIONS: &str = r#"## Scheduled Tasks
 
@@ -453,7 +453,7 @@ pub async fn create_container(
     }
 
     // Bedrock configuration
-    if project.auth_mode == AuthMode::Bedrock {
+    if project.backend == Backend::Bedrock {
         if let Some(ref bedrock) = project.bedrock_config {
             env_vars.push("CLAUDE_CODE_USE_BEDROCK=1".to_string());
 
@@ -506,7 +506,7 @@ pub async fn create_container(
     }
 
     // Ollama configuration
-    if project.auth_mode == AuthMode::Ollama {
+    if project.backend == Backend::Ollama {
         if let Some(ref ollama) = project.ollama_config {
             env_vars.push(format!("ANTHROPIC_BASE_URL={}", ollama.base_url));
             env_vars.push("ANTHROPIC_AUTH_TOKEN=ollama".to_string());
@@ -517,7 +517,7 @@ pub async fn create_container(
     }
 
     // LiteLLM configuration
-    if project.auth_mode == AuthMode::LiteLlm {
+    if project.backend == Backend::LiteLlm {
         if let Some(ref litellm) = project.litellm_config {
             env_vars.push(format!("ANTHROPIC_BASE_URL={}", litellm.base_url));
             if let Some(ref key) = litellm.api_key {
@@ -624,7 +624,7 @@ pub async fn create_container(
 
     // AWS config mount (read-only)
     // Mount if: Bedrock profile auth needs it, OR a global aws_config_path is set
-    let should_mount_aws = if project.auth_mode == AuthMode::Bedrock {
+    let should_mount_aws = if project.backend == Backend::Bedrock {
         if let Some(ref bedrock) = project.bedrock_config {
             bedrock.auth_method == BedrockAuthMethod::Profile
         } else {
@@ -694,7 +694,7 @@ pub async fn create_container(
     labels.insert("triple-c.managed".to_string(), "true".to_string());
     labels.insert("triple-c.project-id".to_string(), project.id.clone());
     labels.insert("triple-c.project-name".to_string(), project.name.clone());
-    labels.insert("triple-c.auth-mode".to_string(), format!("{:?}", project.auth_mode));
+    labels.insert("triple-c.backend".to_string(), format!("{:?}", project.backend));
     labels.insert("triple-c.paths-fingerprint".to_string(), compute_paths_fingerprint(&project.paths));
     labels.insert("triple-c.bedrock-fingerprint".to_string(), compute_bedrock_fingerprint(project));
     labels.insert("triple-c.ollama-fingerprint".to_string(), compute_ollama_fingerprint(project));
@@ -897,11 +897,13 @@ pub async fn container_needs_recreation(
     // Code settings stored in the named volume). The change takes effect
     // on the next explicit rebuild instead.
 
-    // ── Auth mode ────────────────────────────────────────────────────────
+    // ── Backend ──────────────────────────────────────────────────────────
-    let current_auth_mode = format!("{:?}", project.auth_mode);
+    let current_backend = format!("{:?}", project.backend);
-    if let Some(container_auth_mode) = get_label("triple-c.auth-mode") {
+    // Check new label name, falling back to old "triple-c.auth-mode" for pre-rename containers
-        if container_auth_mode != current_auth_mode {
+    let container_backend = get_label("triple-c.backend").or_else(|| get_label("triple-c.auth-mode"));
-            log::info!("Auth mode mismatch (container={:?}, project={:?})", container_auth_mode, current_auth_mode);
+    if let Some(container_backend) = container_backend {
+        if container_backend != current_backend {
+            log::info!("Backend mismatch (container={:?}, project={:?})", container_backend, current_backend);
             return Ok(true);
         }
     }

app/src-tauri/src/docker/image.rs

@@ -31,6 +31,38 @@ pub async fn image_exists(image_name: &str) -> Result<bool, String> {
     Ok(!images.is_empty())
 }
 
+/// Returns the first repo digest (e.g. "sha256:abc...") for the given image,
+/// or None if the image doesn't exist locally or has no repo digests.
+pub async fn get_local_image_digest(image_name: &str) -> Result<Option<String>, String> {
+    let docker = get_docker()?;
+
+    let filters: HashMap<String, Vec<String>> = HashMap::from([(
+        "reference".to_string(),
+        vec![image_name.to_string()],
+    )]);
+
+    let images: Vec<ImageSummary> = docker
+        .list_images(Some(ListImagesOptions {
+            filters,
+            ..Default::default()
+        }))
+        .await
+        .map_err(|e| format!("Failed to list images: {}", e))?;
+
+    if let Some(img) = images.first() {
+        // RepoDigests contains entries like "registry/repo@sha256:abc..."
+        if let Some(digest_str) = img.repo_digests.first() {
+            // Extract the sha256:... part after '@'
+            if let Some(pos) = digest_str.find('@') {
+                return Ok(Some(digest_str[pos + 1..].to_string()));
+            }
+            return Ok(Some(digest_str.clone()));
+        }
+    }
+
+    Ok(None)
+}
+
 pub async fn pull_image<F>(image_name: &str, on_progress: F) -> Result<(), String>
 where
     F: Fn(String) + Send + 'static,

app/src-tauri/src/lib.rs

@@ -119,6 +119,9 @@ pub fn run() {
             // Updates
             commands::update_commands::get_app_version,
             commands::update_commands::check_for_updates,
+            commands::update_commands::check_image_update,
+            // Help
+            commands::help_commands::get_help_content,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");

app/src-tauri/src/models/app_settings.rs

@@ -72,6 +72,8 @@ pub struct AppSettings {
     pub timezone: Option<String>,
     #[serde(default)]
     pub default_microphone: Option<String>,
+    #[serde(default)]
+    pub dismissed_image_digest: Option<String>,
 }
 
 impl Default for AppSettings {
@@ -90,6 +92,7 @@ impl Default for AppSettings {
             dismissed_update_version: None,
             timezone: None,
             default_microphone: None,
+            dismissed_image_digest: None,
         }
     }
 }

app/src-tauri/src/models/project.rs

@@ -31,7 +31,8 @@ pub struct Project {
     pub paths: Vec<ProjectPath>,
     pub container_id: Option<String>,
     pub status: ProjectStatus,
-    pub auth_mode: AuthMode,
+    #[serde(alias = "auth_mode")]
+    pub backend: Backend,
     pub bedrock_config: Option<BedrockConfig>,
     pub ollama_config: Option<OllamaConfig>,
     pub litellm_config: Option<LiteLlmConfig>,
@@ -65,13 +66,14 @@ pub enum ProjectStatus {
     Error,
 }
 
-/// How the project authenticates with Claude.
+/// Which AI model backend/provider the project uses.
-/// - `Anthropic`: User runs `claude login` inside the container (OAuth via Anthropic Console,
+/// - `Anthropic`: Direct Anthropic API (user runs `claude login` inside the container)
-///   persisted in the config volume)
+/// - `Bedrock`: AWS Bedrock with per-project AWS credentials
-/// - `Bedrock`: Uses AWS Bedrock with per-project AWS credentials
+/// - `Ollama`: Local or remote Ollama server
+/// - `LiteLlm`: LiteLLM proxy gateway for 100+ model providers
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 #[serde(rename_all = "snake_case")]
-pub enum AuthMode {
+pub enum Backend {
     /// Backward compat: old projects stored as "login" or "api_key" map to Anthropic.
     #[serde(alias = "login", alias = "api_key")]
     Anthropic,
@@ -81,7 +83,7 @@ pub enum AuthMode {
     LiteLlm,
 }
 
-impl Default for AuthMode {
+impl Default for Backend {
     fn default() -> Self {
         Self::Anthropic
     }
@@ -152,7 +154,7 @@ impl Project {
             paths,
             container_id: None,
             status: ProjectStatus::Stopped,
-            auth_mode: AuthMode::default(),
+            backend: Backend::default(),
             bedrock_config: None,
             ollama_config: None,
             litellm_config: None,

app/src-tauri/src/models/update_info.rs

@@ -35,3 +35,14 @@ pub struct GiteaAsset {
     pub browser_download_url: String,
     pub size: u64,
 }
+
+/// Info returned to the frontend about an available container image update.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ImageUpdateInfo {
+    /// The remote digest (e.g. sha256:abc...)
+    pub remote_digest: String,
+    /// The local digest, if available
+    pub local_digest: Option<String>,
+    /// When the remote image was last updated (if known)
+    pub remote_updated_at: Option<String>,
+}

app/src/App.tsx

@@ -17,7 +17,7 @@ export default function App() {
   const { loadSettings } = useSettings();
   const { refresh } = useProjects();
   const { refresh: refreshMcp } = useMcpServers();
-  const { loadVersion, checkForUpdates, startPeriodicCheck } = useUpdates();
+  const { loadVersion, checkForUpdates, checkImageUpdate, startPeriodicCheck } = useUpdates();
   const { sessions, activeSessionId, setProjects } = useAppState(
     useShallow(s => ({ sessions: s.sessions, activeSessionId: s.activeSessionId, setProjects: s.setProjects }))
   );
@@ -46,7 +46,10 @@ export default function App() {
 
     // Update detection
     loadVersion();
-    const updateTimer = setTimeout(() => checkForUpdates(), 3000);
+    const updateTimer = setTimeout(() => {
+      checkForUpdates();
+      checkImageUpdate();
+    }, 3000);
     const cleanup = startPeriodicCheck();
     return () => {
       clearTimeout(updateTimer);

app/src/components/layout/HelpDialog.tsx

@@ -0,0 +1,218 @@
+import { useEffect, useRef, useCallback, useState } from "react";
+import { getHelpContent } from "../../lib/tauri-commands";
+
+interface Props {
+  onClose: () => void;
+}
+
+/** Convert header text to a URL-friendly slug for anchor links. */
+function slugify(text: string): string {
+  return text
+    .toLowerCase()
+    .replace(/<[^>]+>/g, "")       // strip HTML tags (e.g. from inline code)
+    .replace(/[^\w\s-]/g, "")      // remove non-word chars except spaces/dashes
+    .replace(/\s+/g, "-")          // spaces to dashes
+    .replace(/-+/g, "-")           // collapse consecutive dashes
+    .replace(/^-|-$/g, "");        // trim leading/trailing dashes
+}
+
+/** Simple markdown-to-HTML converter for the help content. */
+function renderMarkdown(md: string): string {
+  let html = md;
+
+  // Normalize line endings
+  html = html.replace(/\r\n/g, "\n");
+
+  // Escape HTML entities (but we'll re-introduce tags below)
+  html = html.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
+
+  // Fenced code blocks (```...```)
+  html = html.replace(/```(\w*)\n([\s\S]*?)```/g, (_m, _lang, code) => {
+    return `<pre class="help-code-block"><code>${code.trimEnd()}</code></pre>`;
+  });
+
+  // Inline code (`...`)
+  html = html.replace(/`([^`]+)`/g, '<code class="help-inline-code">$1</code>');
+
+  // Tables
+  html = html.replace(
+    /(?:^|\n)(\|.+\|)\n(\|[\s:|-]+\|)\n((?:\|.+\|\n?)+)/g,
+    (_m, headerRow: string, _sep: string, bodyRows: string) => {
+      const headers = headerRow
+        .split("|")
+        .slice(1, -1)
+        .map((c: string) => `<th>${c.trim()}</th>`)
+        .join("");
+      const rows = bodyRows
+        .trim()
+        .split("\n")
+        .map((row: string) => {
+          const cells = row
+            .split("|")
+            .slice(1, -1)
+            .map((c: string) => `<td>${c.trim()}</td>`)
+            .join("");
+          return `<tr>${cells}</tr>`;
+        })
+        .join("");
+      return `<table class="help-table"><thead><tr>${headers}</tr></thead><tbody>${rows}</tbody></table>`;
+    },
+  );
+
+  // Blockquotes (> ...)
+  html = html.replace(/(?:^|\n)&gt; (.+)/g, '<blockquote class="help-blockquote">$1</blockquote>');
+  // Merge adjacent blockquotes
+  html = html.replace(/<\/blockquote>\s*<blockquote class="help-blockquote">/g, "<br/>");
+
+  // Horizontal rules
+  html = html.replace(/\n---\n/g, '<hr class="help-hr"/>');
+
+  // Headers with id attributes for anchor navigation (process from h4 down to h1)
+  html = html.replace(/^#### (.+)$/gm, (_m, title) => `<h4 class="help-h4" id="${slugify(title)}">${title}</h4>`);
+  html = html.replace(/^### (.+)$/gm, (_m, title) => `<h3 class="help-h3" id="${slugify(title)}">${title}</h3>`);
+  html = html.replace(/^## (.+)$/gm, (_m, title) => `<h2 class="help-h2" id="${slugify(title)}">${title}</h2>`);
+  html = html.replace(/^# (.+)$/gm, (_m, title) => `<h1 class="help-h1" id="${slugify(title)}">${title}</h1>`);
+
+  // Bold (**...**)
+  html = html.replace(/\*\*([^*]+)\*\*/g, "<strong>$1</strong>");
+
+  // Italic (*...*)
+  html = html.replace(/\*([^*]+)\*/g, "<em>$1</em>");
+
+  // Markdown-style anchor links [text](#anchor)
+  html = html.replace(
+    /\[([^\]]+)\]\(#([^)]+)\)/g,
+    '<a class="help-link" href="#$2">$1</a>',
+  );
+
+  // Markdown-style external links [text](url)
+  html = html.replace(
+    /\[([^\]]+)\]\((https?:\/\/[^)]+)\)/g,
+    '<a class="help-link" href="$2" target="_blank" rel="noopener noreferrer">$1</a>',
+  );
+
+  // Unordered list items (- ...)
+  // Group consecutive list items
+  html = html.replace(/((?:^|\n)- .+(?:\n- .+)*)/g, (block) => {
+    const items = block
+      .trim()
+      .split("\n")
+      .map((line) => `<li>${line.replace(/^- /, "")}</li>`)
+      .join("");
+    return `<ul class="help-ul">${items}</ul>`;
+  });
+
+  // Ordered list items (1. ...)
+  html = html.replace(/((?:^|\n)\d+\. .+(?:\n\d+\. .+)*)/g, (block) => {
+    const items = block
+      .trim()
+      .split("\n")
+      .map((line) => `<li>${line.replace(/^\d+\. /, "")}</li>`)
+      .join("");
+    return `<ol class="help-ol">${items}</ol>`;
+  });
+
+  // Links - convert bare URLs to clickable links (skip already-wrapped URLs)
+  html = html.replace(
+    /(?<!="|'>)(https?:\/\/[^\s<)]+)/g,
+    '<a class="help-link" href="$1" target="_blank" rel="noopener noreferrer">$1</a>',
+  );
+
+  // Wrap remaining loose text lines in paragraphs
+  // Split by double newlines for paragraph breaks
+  const blocks = html.split(/\n\n+/);
+  html = blocks
+    .map((block) => {
+      const trimmed = block.trim();
+      if (!trimmed) return "";
+      // Don't wrap blocks that are already HTML elements
+      if (
+        /^<(h[1-4]|ul|ol|pre|table|blockquote|hr)/.test(trimmed)
+      ) {
+        return trimmed;
+      }
+      // Wrap in paragraph, replacing single newlines with <br/>
+      return `<p class="help-p">${trimmed.replace(/\n/g, "<br/>")}</p>`;
+    })
+    .join("\n");
+
+  return html;
+}
+
+export default function HelpDialog({ onClose }: Props) {
+  const overlayRef = useRef<HTMLDivElement>(null);
+  const contentRef = useRef<HTMLDivElement>(null);
+  const [markdown, setMarkdown] = useState<string | null>(null);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === "Escape") onClose();
+    };
+    document.addEventListener("keydown", handleKeyDown);
+    return () => document.removeEventListener("keydown", handleKeyDown);
+  }, [onClose]);
+
+  useEffect(() => {
+    getHelpContent()
+      .then(setMarkdown)
+      .catch((e) => setError(String(e)));
+  }, []);
+
+  const handleOverlayClick = useCallback(
+    (e: React.MouseEvent<HTMLDivElement>) => {
+      if (e.target === overlayRef.current) onClose();
+    },
+    [onClose],
+  );
+
+  // Handle anchor link clicks to scroll within the dialog
+  const handleContentClick = useCallback((e: React.MouseEvent<HTMLDivElement>) => {
+    const target = e.target as HTMLElement;
+    const anchor = target.closest("a");
+    if (!anchor) return;
+    const href = anchor.getAttribute("href");
+    if (!href || !href.startsWith("#")) return;
+    e.preventDefault();
+    const el = contentRef.current?.querySelector(href);
+    if (el) el.scrollIntoView({ behavior: "smooth" });
+  }, []);
+
+  return (
+    <div
+      ref={overlayRef}
+      onClick={handleOverlayClick}
+      className="fixed inset-0 bg-black/50 flex items-center justify-center z-50"
+    >
+      <div className="bg-[var(--bg-secondary)] border border-[var(--border-color)] rounded-lg shadow-xl w-[48rem] max-w-[90vw] max-h-[85vh] flex flex-col">
+        {/* Header */}
+        <div className="flex items-center justify-between px-6 py-4 border-b border-[var(--border-color)] flex-shrink-0">
+          <h2 className="text-lg font-semibold">How to Use Triple-C</h2>
+          <button
+            onClick={onClose}
+            className="px-3 py-1.5 text-xs bg-[var(--bg-tertiary)] border border-[var(--border-color)] rounded hover:bg-[var(--border-color)] transition-colors"
+          >
+            Close
+          </button>
+        </div>
+
+        {/* Scrollable content */}
+        <div
+          ref={contentRef}
+          onClick={handleContentClick}
+          className="flex-1 overflow-y-auto px-6 py-4 help-content"
+        >
+          {error && (
+            <p className="text-[var(--error)] text-sm">Failed to load help content: {error}</p>
+          )}
+          {!markdown && !error && (
+            <p className="text-[var(--text-secondary)] text-sm">Loading...</p>
+          )}
+          {markdown && (
+            <div dangerouslySetInnerHTML={{ __html: renderMarkdown(markdown) }} />
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}

app/src/components/layout/StatusBar.tsx

@@ -2,8 +2,8 @@ import { useShallow } from "zustand/react/shallow";
 import { useAppState } from "../../store/appState";
 
 export default function StatusBar() {
-  const { projects, sessions } = useAppState(
+  const { projects, sessions, terminalHasSelection } = useAppState(
-    useShallow(s => ({ projects: s.projects, sessions: s.sessions }))
+    useShallow(s => ({ projects: s.projects, sessions: s.sessions, terminalHasSelection: s.terminalHasSelection }))
   );
   const running = projects.filter((p) => p.status === "running").length;
 
@@ -20,6 +20,12 @@ export default function StatusBar() {
       <span>
         {sessions.length} terminal{sessions.length !== 1 ? "s" : ""}
       </span>
+      {terminalHasSelection && (
+        <>
+          <span className="mx-2">|</span>
+          <span className="text-[var(--accent)]">Ctrl+Shift+C to copy</span>
+        </>
+      )}
     </div>
   );
 }

app/src/components/layout/TopBar.tsx

@@ -4,19 +4,25 @@ import TerminalTabs from "../terminal/TerminalTabs";
 import { useAppState } from "../../store/appState";
 import { useSettings } from "../../hooks/useSettings";
 import UpdateDialog from "../settings/UpdateDialog";
+import ImageUpdateDialog from "../settings/ImageUpdateDialog";
+import HelpDialog from "./HelpDialog";
 
 export default function TopBar() {
-  const { dockerAvailable, imageExists, updateInfo, appVersion, setUpdateInfo } = useAppState(
+  const { dockerAvailable, imageExists, updateInfo, imageUpdateInfo, appVersion, setUpdateInfo, setImageUpdateInfo } = useAppState(
     useShallow(s => ({
       dockerAvailable: s.dockerAvailable,
       imageExists: s.imageExists,
       updateInfo: s.updateInfo,
+      imageUpdateInfo: s.imageUpdateInfo,
       appVersion: s.appVersion,
       setUpdateInfo: s.setUpdateInfo,
+      setImageUpdateInfo: s.setImageUpdateInfo,
     }))
   );
   const { appSettings, saveSettings } = useSettings();
   const [showUpdateDialog, setShowUpdateDialog] = useState(false);
+  const [showImageUpdateDialog, setShowImageUpdateDialog] = useState(false);
+  const [showHelpDialog, setShowHelpDialog] = useState(false);
 
   const handleDismiss = async () => {
     if (appSettings && updateInfo) {
@@ -29,6 +35,17 @@ export default function TopBar() {
     setShowUpdateDialog(false);
   };
 
+  const handleImageUpdateDismiss = async () => {
+    if (appSettings && imageUpdateInfo) {
+      await saveSettings({
+        ...appSettings,
+        dismissed_image_digest: imageUpdateInfo.remote_digest,
+      });
+    }
+    setImageUpdateInfo(null);
+    setShowImageUpdateDialog(false);
+  };
+
   return (
     <>
       <div className="flex items-center h-10 bg-[var(--bg-secondary)] border border-[var(--border-color)] rounded-lg overflow-hidden">
@@ -44,8 +61,24 @@ export default function TopBar() {
               Update
             </button>
           )}
+          {imageUpdateInfo && (
+            <button
+              onClick={() => setShowImageUpdateDialog(true)}
+              className="px-2 py-0.5 rounded text-xs font-medium bg-[var(--warning,#f59e0b)] text-white hover:opacity-80 transition-colors"
+              title="A newer container image is available"
+            >
+              Image Update
+            </button>
+          )}
           <StatusDot ok={dockerAvailable === true} label="Docker" />
           <StatusDot ok={imageExists === true} label="Image" />
+          <button
+            onClick={() => setShowHelpDialog(true)}
+            title="Help"
+            className="ml-1 w-5 h-5 flex items-center justify-center rounded-full border border-[var(--border-color)] text-[var(--text-secondary)] hover:text-[var(--text-primary)] hover:border-[var(--text-secondary)] transition-colors text-xs font-semibold leading-none"
+          >
+            ?
+          </button>
         </div>
       </div>
       {showUpdateDialog && updateInfo && (
@@ -56,6 +89,16 @@ export default function TopBar() {
           onClose={() => setShowUpdateDialog(false)}
         />
       )}
+      {showImageUpdateDialog && imageUpdateInfo && (
+        <ImageUpdateDialog
+          imageUpdateInfo={imageUpdateInfo}
+          onDismiss={handleImageUpdateDismiss}
+          onClose={() => setShowImageUpdateDialog(false)}
+        />
+      )}
+      {showHelpDialog && (
+        <HelpDialog onClose={() => setShowHelpDialog(false)} />
+      )}
     </>
   );
 }

app/src/components/projects/ProjectCard.test.tsx

@@ -57,7 +57,7 @@ const mockProject: Project = {
   paths: [{ host_path: "/home/user/project", mount_name: "project" }],
   container_id: null,
   status: "stopped",
-  auth_mode: "anthropic",
+  backend: "anthropic",
   bedrock_config: null,
   allow_docker_access: false,
   ssh_key_path: null,

app/src/components/projects/ProjectCard.tsx

@@ -1,7 +1,7 @@
 import { useState, useEffect } from "react";
 import { open } from "@tauri-apps/plugin-dialog";
 import { listen } from "@tauri-apps/api/event";
-import type { Project, ProjectPath, AuthMode, BedrockConfig, BedrockAuthMethod, OllamaConfig, LiteLlmConfig } from "../../lib/types";
+import type { Project, ProjectPath, Backend, BedrockConfig, BedrockAuthMethod, OllamaConfig, LiteLlmConfig } from "../../lib/types";
 import { useProjects } from "../../hooks/useProjects";
 import { useMcpServers } from "../../hooks/useMcpServers";
 import { useTerminal } from "../../hooks/useTerminal";
@@ -12,6 +12,7 @@ import ClaudeInstructionsModal from "./ClaudeInstructionsModal";
 import ContainerProgressModal from "./ContainerProgressModal";
 import FileManagerModal from "./FileManagerModal";
 import ConfirmRemoveModal from "./ConfirmRemoveModal";
+import Tooltip from "../ui/Tooltip";
 
 interface Props {
   project: Project;
@@ -202,16 +203,16 @@ export default function ProjectCard({ project }: Props) {
     model_id: null,
   };
 
-  const handleAuthModeChange = async (mode: AuthMode) => {
+  const handleBackendChange = async (mode: Backend) => {
     try {
-      const updates: Partial<Project> = { auth_mode: mode };
+      const updates: Partial<Project> = { backend: mode };
       if (mode === "bedrock" && !project.bedrock_config) {
         updates.bedrock_config = defaultBedrockConfig;
       }
       if (mode === "ollama" && !project.ollama_config) {
         updates.ollama_config = defaultOllamaConfig;
       }
-      if (mode === "lit_llm" && !project.litellm_config) {
+      if (mode === "lite_llm" && !project.litellm_config) {
         updates.litellm_config = defaultLiteLlmConfig;
       }
       await update({ ...project, ...updates });
@@ -446,12 +447,12 @@ export default function ProjectCard({ project }: Props) {
 
       {isSelected && (
         <div className="mt-2 ml-4 space-y-2 min-w-0 overflow-hidden">
-          {/* Auth mode selector */}
+          {/* Backend selector */}
           <div className="flex items-center gap-1 text-xs">
-            <span className="text-[var(--text-secondary)] mr-1">Auth:</span>
+            <span className="text-[var(--text-secondary)] mr-1">Backend:<Tooltip text="Choose the AI model provider for this project. Anthropic: Connect directly to Claude via OAuth login (run 'claude login' in terminal). Bedrock: Route through AWS Bedrock using your AWS credentials. Ollama: Use locally-hosted open-source models (Llama, Mistral, etc.) via an Ollama server. LiteLLM: Connect through a LiteLLM proxy gateway to access 100+ model providers (OpenAI, Azure, Gemini, etc.)." /></span>
             <select
-              value={project.auth_mode}
+              value={project.backend}
-              onChange={(e) => { e.stopPropagation(); handleAuthModeChange(e.target.value as AuthMode); }}
+              onChange={(e) => { e.stopPropagation(); handleBackendChange(e.target.value as Backend); }}
               onClick={(e) => e.stopPropagation()}
               disabled={!isStopped}
               className="px-2 py-0.5 rounded bg-[var(--bg-primary)] border border-[var(--border-color)] text-xs text-[var(--text-primary)] focus:outline-none focus:border-[var(--accent)] disabled:opacity-50"
@@ -459,7 +460,7 @@ export default function ProjectCard({ project }: Props) {
               <option value="anthropic">Anthropic</option>
               <option value="bedrock">Bedrock</option>
               <option value="ollama">Ollama</option>
-              <option value="lit_llm">LiteLLM</option>
+              <option value="lite_llm">LiteLLM</option>
             </select>
           </div>
 
@@ -609,7 +610,7 @@ export default function ProjectCard({ project }: Props) {
 
               {/* SSH Key */}
               <div>
-                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">SSH Key Directory</label>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">SSH Key Directory<Tooltip text="Path to your .ssh directory. Mounted into the container so Claude can authenticate with Git remotes over SSH." /></label>
                 <div className="flex gap-1">
                   <input
                     value={sshKeyPath}
@@ -631,7 +632,7 @@ export default function ProjectCard({ project }: Props) {
 
               {/* Git Name */}
               <div>
-                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Git Name</label>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Git Name<Tooltip text="Sets git user.name inside the container for commit authorship." /></label>
                 <input
                   value={gitName}
                   onChange={(e) => setGitName(e.target.value)}
@@ -644,7 +645,7 @@ export default function ProjectCard({ project }: Props) {
 
               {/* Git Email */}
               <div>
-                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Git Email</label>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Git Email<Tooltip text="Sets git user.email inside the container for commit authorship." /></label>
                 <input
                   value={gitEmail}
                   onChange={(e) => setGitEmail(e.target.value)}
@@ -657,7 +658,7 @@ export default function ProjectCard({ project }: Props) {
 
               {/* Git Token (HTTPS) */}
               <div>
-                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Git HTTPS Token</label>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Git HTTPS Token<Tooltip text="A personal access token (e.g. GitHub PAT) for HTTPS git operations inside the container." /></label>
                 <input
                   type="password"
                   value={gitToken}
@@ -671,7 +672,7 @@ export default function ProjectCard({ project }: Props) {
 
               {/* Docker access toggle */}
               <div className="flex items-center gap-2">
-                <label className="text-xs text-[var(--text-secondary)]">Allow container spawning</label>
+                <label className="text-xs text-[var(--text-secondary)]">Allow container spawning<Tooltip text="Mounts the Docker socket so Claude can build and run Docker containers from inside the sandbox." /></label>
                 <button
                   onClick={async () => {
                     try { await update({ ...project, allow_docker_access: !project.allow_docker_access }); } catch (err) {
@@ -691,7 +692,7 @@ export default function ProjectCard({ project }: Props) {
 
               {/* Mission Control toggle */}
               <div className="flex items-center gap-2">
-                <label className="text-xs text-[var(--text-secondary)]">Mission Control</label>
+                <label className="text-xs text-[var(--text-secondary)]">Mission Control<Tooltip text="Enables a web dashboard for monitoring and managing Claude sessions remotely." /></label>
                 <button
                   onClick={async () => {
                     try {
@@ -714,7 +715,7 @@ export default function ProjectCard({ project }: Props) {
               {/* Environment Variables */}
               <div className="flex items-center justify-between">
                 <label className="text-xs text-[var(--text-secondary)]">
-                  Environment Variables{envVars.length > 0 && ` (${envVars.length})`}
+                  Environment Variables{envVars.length > 0 && ` (${envVars.length})`}<Tooltip text="Custom env vars injected into this project's container. Useful for API keys or tool configuration." />
                 </label>
                 <button
                   onClick={() => setShowEnvVarsModal(true)}
@@ -727,7 +728,7 @@ export default function ProjectCard({ project }: Props) {
               {/* Port Mappings */}
               <div className="flex items-center justify-between">
                 <label className="text-xs text-[var(--text-secondary)]">
-                  Port Mappings{portMappings.length > 0 && ` (${portMappings.length})`}
+                  Port Mappings{portMappings.length > 0 && ` (${portMappings.length})`}<Tooltip text="Map container ports to host ports so you can access dev servers running inside the container." />
                 </label>
                 <button
                   onClick={() => setShowPortMappingsModal(true)}
@@ -740,7 +741,7 @@ export default function ProjectCard({ project }: Props) {
               {/* Claude Instructions */}
               <div className="flex items-center justify-between">
                 <label className="text-xs text-[var(--text-secondary)]">
-                  Claude Instructions{claudeInstructions ? " (set)" : ""}
+                  Claude Instructions{claudeInstructions ? " (set)" : ""}<Tooltip text="Project-specific instructions written to CLAUDE.md. Guides Claude's behavior for this project." />
                 </label>
                 <button
                   onClick={() => setShowClaudeInstructionsModal(true)}
@@ -753,7 +754,7 @@ export default function ProjectCard({ project }: Props) {
               {/* MCP Servers */}
               {mcpServers.length > 0 && (
                 <div>
-                  <label className="block text-xs text-[var(--text-secondary)] mb-1">MCP Servers</label>
+                  <label className="block text-xs text-[var(--text-secondary)] mb-1">MCP Servers<Tooltip text="Model Context Protocol servers give Claude access to external tools and data sources." /></label>
                   <div className="space-y-1">
                     {mcpServers.map((server) => {
                       const enabled = project.enabled_mcp_servers.includes(server.id);
@@ -794,7 +795,7 @@ export default function ProjectCard({ project }: Props) {
               )}
 
               {/* Bedrock config */}
-              {project.auth_mode === "bedrock" && (() => {
+              {project.backend === "bedrock" && (() => {
                 const bc = project.bedrock_config ?? defaultBedrockConfig;
                 const inputCls = "w-full px-2 py-1 bg-[var(--bg-primary)] border border-[var(--border-color)] rounded text-xs text-[var(--text-primary)] focus:outline-none focus:border-[var(--accent)] disabled:opacity-50";
                 return (
@@ -819,7 +820,7 @@ export default function ProjectCard({ project }: Props) {
 
                     {/* AWS Region (always shown) */}
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">AWS Region</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">AWS Region<Tooltip text="The AWS region where your Bedrock endpoint is available (e.g. us-east-1)." /></label>
                       <input
                         value={bedrockRegion}
                         onChange={(e) => setBedrockRegion(e.target.value)}
@@ -834,7 +835,7 @@ export default function ProjectCard({ project }: Props) {
                     {bc.auth_method === "static_credentials" && (
                       <>
                         <div>
-                          <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Access Key ID</label>
+                          <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Access Key ID<Tooltip text="Your AWS IAM access key ID for Bedrock API authentication." /></label>
                           <input
                             value={bedrockAccessKeyId}
                             onChange={(e) => setBedrockAccessKeyId(e.target.value)}
@@ -845,7 +846,7 @@ export default function ProjectCard({ project }: Props) {
                           />
                         </div>
                         <div>
-                          <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Secret Access Key</label>
+                          <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Secret Access Key<Tooltip text="Your AWS IAM secret key. Stored locally and injected as an env var into the container." /></label>
                           <input
                             type="password"
                             value={bedrockSecretKey}
@@ -856,7 +857,7 @@ export default function ProjectCard({ project }: Props) {
                           />
                         </div>
                         <div>
-                          <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Session Token (optional)</label>
+                          <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Session Token (optional)<Tooltip text="Temporary session token for assumed-role or MFA-based AWS credentials." /></label>
                           <input
                             type="password"
                             value={bedrockSessionToken}
@@ -872,7 +873,7 @@ export default function ProjectCard({ project }: Props) {
                     {/* Profile field */}
                     {bc.auth_method === "profile" && (
                       <div>
-                        <label className="block text-xs text-[var(--text-secondary)] mb-0.5">AWS Profile</label>
+                        <label className="block text-xs text-[var(--text-secondary)] mb-0.5">AWS Profile<Tooltip text="Named profile from your AWS config/credentials files (e.g. 'default' or 'prod')." /></label>
                         <input
                           value={bedrockProfile}
                           onChange={(e) => setBedrockProfile(e.target.value)}
@@ -887,7 +888,7 @@ export default function ProjectCard({ project }: Props) {
                     {/* Bearer token field */}
                     {bc.auth_method === "bearer_token" && (
                       <div>
-                        <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Bearer Token</label>
+                        <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Bearer Token<Tooltip text="An SSO or identity-center bearer token for Bedrock authentication." /></label>
                         <input
                           type="password"
                           value={bedrockBearerToken}
@@ -901,7 +902,7 @@ export default function ProjectCard({ project }: Props) {
 
                     {/* Model override */}
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Model ID (optional)</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Model ID (optional)<Tooltip text="Override the default Bedrock model. Leave blank to use Claude's default." /></label>
                       <input
                         value={bedrockModelId}
                         onChange={(e) => setBedrockModelId(e.target.value)}
@@ -916,7 +917,7 @@ export default function ProjectCard({ project }: Props) {
               })()}
 
               {/* Ollama config */}
-              {project.auth_mode === "ollama" && (() => {
+              {project.backend === "ollama" && (() => {
                 const inputCls = "w-full px-2 py-1 bg-[var(--bg-primary)] border border-[var(--border-color)] rounded text-xs text-[var(--text-primary)] focus:outline-none focus:border-[var(--accent)] disabled:opacity-50";
                 return (
                   <div className="space-y-2 pt-1 border-t border-[var(--border-color)]">
@@ -926,7 +927,7 @@ export default function ProjectCard({ project }: Props) {
                     </p>
 
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Base URL</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Base URL<Tooltip text="URL of your Ollama server. Use host.docker.internal to reach the host machine from inside the container." /></label>
                       <input
                         value={ollamaBaseUrl}
                         onChange={(e) => setOllamaBaseUrl(e.target.value)}
@@ -941,7 +942,7 @@ export default function ProjectCard({ project }: Props) {
                     </div>
 
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Model (optional)</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Model (required)<Tooltip text="Ollama model name to use (e.g. qwen3.5:27b). The model must be pulled in Ollama before starting the container." /></label>
                       <input
                         value={ollamaModelId}
                         onChange={(e) => setOllamaModelId(e.target.value)}
@@ -956,7 +957,7 @@ export default function ProjectCard({ project }: Props) {
               })()}
 
               {/* LiteLLM config */}
-              {project.auth_mode === "lit_llm" && (() => {
+              {project.backend === "lite_llm" && (() => {
                 const inputCls = "w-full px-2 py-1 bg-[var(--bg-primary)] border border-[var(--border-color)] rounded text-xs text-[var(--text-primary)] focus:outline-none focus:border-[var(--accent)] disabled:opacity-50";
                 return (
                   <div className="space-y-2 pt-1 border-t border-[var(--border-color)]">
@@ -966,7 +967,7 @@ export default function ProjectCard({ project }: Props) {
                     </p>
 
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Base URL</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Base URL<Tooltip text="URL of your LiteLLM proxy server. Use host.docker.internal for a locally running proxy." /></label>
                       <input
                         value={litellmBaseUrl}
                         onChange={(e) => setLitellmBaseUrl(e.target.value)}
@@ -981,7 +982,7 @@ export default function ProjectCard({ project }: Props) {
                     </div>
 
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">API Key</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">API Key<Tooltip text="Authentication key for your LiteLLM proxy, if required." /></label>
                       <input
                         type="password"
                         value={litellmApiKey}
@@ -994,7 +995,7 @@ export default function ProjectCard({ project }: Props) {
                     </div>
 
                     <div>
-                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Model (optional)</label>
+                      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Model (optional)<Tooltip text="Model identifier as configured in your LiteLLM proxy (e.g. gpt-4o, gemini-pro)." /></label>
                       <input
                         value={litellmModelId}
                         onChange={(e) => setLitellmModelId(e.target.value)}

app/src/components/settings/ApiKeyInput.tsx

@@ -1,9 +1,9 @@
 export default function ApiKeyInput() {
   return (
     <div>
-      <label className="block text-sm font-medium mb-1">Authentication</label>
+      <label className="block text-sm font-medium mb-1">Backend</label>
       <p className="text-xs text-[var(--text-secondary)] mb-3">
-        Each project can use <strong>claude login</strong> (OAuth, run inside the terminal) or <strong>AWS Bedrock</strong>. Set auth mode per-project.
+        Each project can use <strong>claude login</strong> (OAuth, run inside the terminal) or <strong>AWS Bedrock</strong>. Set backend per-project.
       </p>
     </div>
   );

app/src/components/settings/AwsSettings.tsx

@@ -1,6 +1,7 @@
 import { useState, useEffect } from "react";
 import { useSettings } from "../../hooks/useSettings";
 import * as commands from "../../lib/tauri-commands";
+import Tooltip from "../ui/Tooltip";
 
 export default function AwsSettings() {
   const { appSettings, saveSettings } = useSettings();
@@ -56,7 +57,7 @@ export default function AwsSettings() {
 
         {/* AWS Config Path */}
         <div>
-          <span className="text-[var(--text-secondary)] text-xs block mb-1">AWS Config Path</span>
+          <span className="text-[var(--text-secondary)] text-xs block mb-1">AWS Config Path<Tooltip text="Path to your AWS config/credentials directory. Mounted into containers for Bedrock auth." /></span>
           <div className="flex gap-2">
             <input
               type="text"
@@ -80,7 +81,7 @@ export default function AwsSettings() {
 
         {/* AWS Profile */}
         <div>
-          <span className="text-[var(--text-secondary)] text-xs block mb-1">Default Profile</span>
+          <span className="text-[var(--text-secondary)] text-xs block mb-1">Default Profile<Tooltip text="AWS named profile to use by default. Per-project settings can override this." /></span>
           <select
             value={globalAws.aws_profile ?? ""}
             onChange={(e) => handleChange("aws_profile", e.target.value)}
@@ -95,7 +96,7 @@ export default function AwsSettings() {
 
         {/* AWS Region */}
         <div>
-          <span className="text-[var(--text-secondary)] text-xs block mb-1">Default Region</span>
+          <span className="text-[var(--text-secondary)] text-xs block mb-1">Default Region<Tooltip text="Default AWS region for Bedrock API calls (e.g. us-east-1). Can be overridden per project." /></span>
           <input
             type="text"
             value={globalAws.aws_region ?? ""}

app/src/components/settings/DockerSettings.tsx

@@ -2,6 +2,7 @@ import { useState } from "react";
 import { useDocker } from "../../hooks/useDocker";
 import { useSettings } from "../../hooks/useSettings";
 import type { ImageSource } from "../../lib/types";
+import Tooltip from "../ui/Tooltip";
 
 const REGISTRY_IMAGE = "repo.anhonesthost.net/cybercovellc/triple-c/triple-c-sandbox:latest";
 
@@ -87,7 +88,7 @@ export default function DockerSettings() {
 
         {/* Image Source Selector */}
         <div>
-          <span className="text-[var(--text-secondary)] text-xs block mb-1.5">Image Source</span>
+          <span className="text-[var(--text-secondary)] text-xs block mb-1.5">Image Source<Tooltip text="Registry pulls the pre-built image. Local Build compiles from the bundled Dockerfile. Custom lets you specify any image." /></span>
           <div className="flex gap-1">
             {IMAGE_SOURCE_OPTIONS.map((opt) => (
               <button
@@ -109,7 +110,7 @@ export default function DockerSettings() {
         {/* Custom image input */}
         {imageSource === "custom" && (
           <div>
-            <span className="text-[var(--text-secondary)] text-xs block mb-1">Custom Image</span>
+            <span className="text-[var(--text-secondary)] text-xs block mb-1">Custom Image<Tooltip text="Full image name including registry and tag (e.g. myregistry.com/image:tag)." /></span>
             <input
               type="text"
               value={customInput}
@@ -121,9 +122,9 @@ export default function DockerSettings() {
         )}
 
         {/* Resolved image display */}
-        <div className="flex items-center justify-between">
+        <div>
           <span className="text-[var(--text-secondary)]">Image</span>
-          <span className="text-xs text-[var(--text-secondary)] truncate max-w-[200px]" title={resolvedImageName}>
+          <span className="block text-xs text-[var(--text-secondary)] font-mono mt-0.5 truncate" title={resolvedImageName}>
             {resolvedImageName}
           </span>
         </div>

app/src/components/settings/ImageUpdateDialog.tsx

@@ -0,0 +1,91 @@
+import { useEffect, useRef, useCallback } from "react";
+import type { ImageUpdateInfo } from "../../lib/types";
+
+interface Props {
+  imageUpdateInfo: ImageUpdateInfo;
+  onDismiss: () => void;
+  onClose: () => void;
+}
+
+export default function ImageUpdateDialog({
+  imageUpdateInfo,
+  onDismiss,
+  onClose,
+}: Props) {
+  const overlayRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === "Escape") onClose();
+    };
+    document.addEventListener("keydown", handleKeyDown);
+    return () => document.removeEventListener("keydown", handleKeyDown);
+  }, [onClose]);
+
+  const handleOverlayClick = useCallback(
+    (e: React.MouseEvent<HTMLDivElement>) => {
+      if (e.target === overlayRef.current) onClose();
+    },
+    [onClose],
+  );
+
+  const shortDigest = (digest: string) => {
+    // Show first 16 chars of the hash part (after "sha256:")
+    const hash = digest.startsWith("sha256:") ? digest.slice(7) : digest;
+    return hash.slice(0, 16);
+  };
+
+  return (
+    <div
+      ref={overlayRef}
+      onClick={handleOverlayClick}
+      className="fixed inset-0 bg-black/50 flex items-center justify-center z-50"
+    >
+      <div className="bg-[var(--bg-secondary)] border border-[var(--border-color)] rounded-lg p-6 w-[28rem] max-h-[80vh] overflow-y-auto shadow-xl">
+        <h2 className="text-lg font-semibold mb-3">Container Image Update</h2>
+
+        <p className="text-sm text-[var(--text-secondary)] mb-4">
+          A newer version of the container image is available in the registry.
+          Re-pull the image in Docker settings to get the latest tools and fixes.
+        </p>
+
+        <div className="space-y-2 mb-4 text-xs bg-[var(--bg-primary)] rounded p-3 border border-[var(--border-color)]">
+          {imageUpdateInfo.local_digest && (
+            <div className="flex justify-between">
+              <span className="text-[var(--text-secondary)]">Local digest</span>
+              <span className="font-mono text-[var(--text-primary)]">
+                {shortDigest(imageUpdateInfo.local_digest)}...
+              </span>
+            </div>
+          )}
+          <div className="flex justify-between">
+            <span className="text-[var(--text-secondary)]">Remote digest</span>
+            <span className="font-mono text-[var(--accent)]">
+              {shortDigest(imageUpdateInfo.remote_digest)}...
+            </span>
+          </div>
+        </div>
+
+        <p className="text-xs text-[var(--text-secondary)] mb-4">
+          Go to Settings &gt; Docker and click &quot;Re-pull Image&quot; to update.
+          Running containers will not be affected until restarted.
+        </p>
+
+        <div className="flex items-center justify-end gap-2">
+          <button
+            onClick={onDismiss}
+            className="px-3 py-1.5 text-xs text-[var(--text-secondary)] hover:text-[var(--text-primary)] transition-colors"
+          >
+            Dismiss
+          </button>
+          <button
+            onClick={onClose}
+            className="px-3 py-1.5 text-xs bg-[var(--bg-tertiary)] border border-[var(--border-color)] rounded hover:bg-[var(--border-color)] transition-colors"
+          >
+            Close
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}

app/src/components/settings/SettingsPanel.tsx

@@ -1,5 +1,4 @@
 import { useState, useEffect } from "react";
-import ApiKeyInput from "./ApiKeyInput";
 import DockerSettings from "./DockerSettings";
 import AwsSettings from "./AwsSettings";
 import { useSettings } from "../../hooks/useSettings";
@@ -8,10 +7,11 @@ import ClaudeInstructionsModal from "../projects/ClaudeInstructionsModal";
 import EnvVarsModal from "../projects/EnvVarsModal";
 import { detectHostTimezone } from "../../lib/tauri-commands";
 import type { EnvVar } from "../../lib/types";
+import Tooltip from "../ui/Tooltip";
 
 export default function SettingsPanel() {
   const { appSettings, saveSettings } = useSettings();
-  const { appVersion, checkForUpdates } = useUpdates();
+  const { appVersion, imageUpdateInfo, checkForUpdates, checkImageUpdate } = useUpdates();
   const [globalInstructions, setGlobalInstructions] = useState(appSettings?.global_claude_instructions ?? "");
   const [globalEnvVars, setGlobalEnvVars] = useState<EnvVar[]>(appSettings?.global_custom_env_vars ?? []);
   const [checkingUpdates, setCheckingUpdates] = useState(false);
@@ -39,7 +39,7 @@ export default function SettingsPanel() {
   const handleCheckNow = async () => {
     setCheckingUpdates(true);
     try {
-      await checkForUpdates();
+      await Promise.all([checkForUpdates(), checkImageUpdate()]);
     } finally {
       setCheckingUpdates(false);
     }
@@ -55,13 +55,12 @@ export default function SettingsPanel() {
       <h2 className="text-xs font-semibold uppercase text-[var(--text-secondary)]">
         Settings
       </h2>
-      <ApiKeyInput />
       <DockerSettings />
       <AwsSettings />
 
       {/* Container Timezone */}
       <div>
-        <label className="block text-sm font-medium mb-1">Container Timezone</label>
+        <label className="block text-sm font-medium mb-1">Container Timezone<Tooltip text="Sets the timezone inside containers. Affects scheduled task timing and log timestamps." /></label>
         <p className="text-xs text-[var(--text-secondary)] mb-1.5">
           Timezone for containers — affects scheduled task timing (IANA format, e.g. America/New_York)
         </p>
@@ -81,7 +80,7 @@ export default function SettingsPanel() {
 
       {/* Global Claude Instructions */}
       <div>
-        <label className="block text-sm font-medium mb-1">Claude Instructions</label>
+        <label className="block text-sm font-medium mb-1">Claude Instructions<Tooltip text="Global instructions applied to all projects. Written to ~/.claude/CLAUDE.md in every container." /></label>
         <p className="text-xs text-[var(--text-secondary)] mb-1.5">
           Global instructions applied to all projects (written to ~/.claude/CLAUDE.md in containers)
         </p>
@@ -100,7 +99,7 @@ export default function SettingsPanel() {
 
       {/* Global Environment Variables */}
       <div>
-        <label className="block text-sm font-medium mb-1">Global Environment Variables</label>
+        <label className="block text-sm font-medium mb-1">Global Environment Variables<Tooltip text="Env vars injected into all containers. Per-project vars with the same key take precedence." /></label>
         <p className="text-xs text-[var(--text-secondary)] mb-1.5">
           Applied to all project containers. Per-project variables override global ones with the same key.
         </p>
@@ -119,7 +118,7 @@ export default function SettingsPanel() {
 
       {/* Updates section */}
       <div>
-        <label className="block text-sm font-medium mb-2">Updates</label>
+        <label className="block text-sm font-medium mb-2">Updates<Tooltip text="Check for new versions of the Triple-C app and container image." /></label>
         <div className="space-y-2">
           {appVersion && (
             <p className="text-xs text-[var(--text-secondary)]">
@@ -146,6 +145,12 @@ export default function SettingsPanel() {
           >
             {checkingUpdates ? "Checking..." : "Check now"}
           </button>
+          {imageUpdateInfo && (
+            <div className="flex items-center gap-2 px-3 py-2 text-xs bg-[var(--bg-primary)] border border-[var(--warning,#f59e0b)] rounded">
+              <span className="inline-block w-2 h-2 rounded-full bg-[var(--warning,#f59e0b)]" />
+              <span>A newer container image is available. Re-pull the image in Docker settings above to update.</span>
+            </div>
+          )}
         </div>
       </div>
 

app/src/components/terminal/TerminalView.tsx

@@ -24,6 +24,7 @@ export default function TerminalView({ sessionId, active }: Props) {
   const webglRef = useRef<WebglAddon | null>(null);
   const detectorRef = useRef<UrlDetector | null>(null);
   const { sendInput, pasteImage, resize, onOutput, onExit } = useTerminal();
+  const setTerminalHasSelection = useAppState(s => s.setTerminalHasSelection);
 
   const ssoBufferRef = useRef("");
   const ssoTriggeredRef = useRef(false);
@@ -80,6 +81,22 @@ export default function TerminalView({ sessionId, active }: Props) {
 
     term.open(containerRef.current);
 
+    // Ctrl+Shift+C copies selected terminal text to clipboard.
+    // This prevents the keystroke from reaching the container (where
+    // Ctrl+C would send SIGINT and cancel running work).
+    term.attachCustomKeyEventHandler((event) => {
+      if (event.type === "keydown" && event.ctrlKey && event.shiftKey && event.key === "C") {
+        const sel = term.getSelection();
+        if (sel) {
+          navigator.clipboard.writeText(sel).catch((e) =>
+            console.error("Ctrl+Shift+C clipboard write failed:", e),
+          );
+        }
+        return false; // prevent xterm from processing this key
+      }
+      return true;
+    });
+
     // WebGL addon is loaded/disposed dynamically in the active effect
     // to avoid exhausting the browser's limited WebGL context pool.
 
@@ -120,6 +137,11 @@ export default function TerminalView({ sessionId, active }: Props) {
       setIsAtBottom(buf.viewportY >= buf.baseY);
     });
 
+    // Track text selection to show copy hint in status bar
+    const selectionDisposable = term.onSelectionChange(() => {
+      setTerminalHasSelection(term.hasSelection());
+    });
+
     // Handle image paste: intercept paste events with image data,
     // upload to the container, and inject the file path into terminal input.
     const handlePaste = (e: ClipboardEvent) => {
@@ -222,6 +244,8 @@ export default function TerminalView({ sessionId, active }: Props) {
       osc52Disposable.dispose();
       inputDisposable.dispose();
       scrollDisposable.dispose();
+      selectionDisposable.dispose();
+      setTerminalHasSelection(false);
       containerRef.current?.removeEventListener("paste", handlePaste, { capture: true });
       outputPromise.then((fn) => fn?.());
       exitPromise.then((fn) => fn?.());

app/src/components/ui/Tooltip.tsx

@@ -0,0 +1,78 @@
+import { useState, useRef, useLayoutEffect, type ReactNode } from "react";
+import { createPortal } from "react-dom";
+
+interface TooltipProps {
+  text: string;
+  children?: ReactNode;
+}
+
+/**
+ * A small circled question-mark icon that shows a tooltip on hover.
+ * Uses a portal to render at `document.body` so the tooltip is never
+ * clipped by ancestor `overflow: hidden` containers.
+ */
+export default function Tooltip({ text, children }: TooltipProps) {
+  const [visible, setVisible] = useState(false);
+  const [coords, setCoords] = useState({ top: 0, left: 0 });
+  const [, setPlacement] = useState<"top" | "bottom">("top");
+  const triggerRef = useRef<HTMLSpanElement>(null);
+  const tooltipRef = useRef<HTMLDivElement>(null);
+
+  useLayoutEffect(() => {
+    if (!visible || !triggerRef.current || !tooltipRef.current) return;
+
+    const trigger = triggerRef.current.getBoundingClientRect();
+    const tooltip = tooltipRef.current.getBoundingClientRect();
+    const gap = 6;
+
+    // Vertical: prefer above, fall back to below
+    const above = trigger.top - tooltip.height - gap >= 4;
+    const pos = above ? "top" : "bottom";
+    setPlacement(pos);
+
+    const top =
+      pos === "top"
+        ? trigger.top - tooltip.height - gap
+        : trigger.bottom + gap;
+
+    // Horizontal: center on trigger, clamp to viewport
+    let left = trigger.left + trigger.width / 2 - tooltip.width / 2;
+    left = Math.max(4, Math.min(left, window.innerWidth - tooltip.width - 4));
+
+    setCoords({ top, left });
+  }, [visible]);
+
+  return (
+    <span
+      ref={triggerRef}
+      className="inline-flex items-center ml-1"
+      onMouseEnter={() => setVisible(true)}
+      onMouseLeave={() => setVisible(false)}
+    >
+      {children ?? (
+        <span
+          className="inline-flex items-center justify-center w-3.5 h-3.5 rounded-full border border-[var(--text-secondary)] text-[var(--text-secondary)] text-[9px] leading-none cursor-help select-none hover:border-[var(--accent)] hover:text-[var(--accent)] transition-colors"
+          aria-label="Help"
+        >
+          ?
+        </span>
+      )}
+      {visible &&
+        createPortal(
+          <div
+            ref={tooltipRef}
+            style={{
+              position: "fixed",
+              top: coords.top,
+              left: coords.left,
+              zIndex: 9999,
+            }}
+            className={`px-2.5 py-1.5 text-[11px] leading-snug text-[var(--text-primary)] bg-[var(--bg-tertiary)] border border-[var(--border-color)] rounded shadow-lg whitespace-normal max-w-[280px] w-max pointer-events-none`}
+          >
+            {text}
+          </div>,
+          document.body
+        )}
+    </span>
+  );
+}

app/src/hooks/useUpdates.ts

@@ -6,16 +6,25 @@ import * as commands from "../lib/tauri-commands";
 const CHECK_INTERVAL_MS = 24 * 60 * 60 * 1000; // 24 hours
 
 export function useUpdates() {
-  const { updateInfo, setUpdateInfo, appVersion, setAppVersion, appSettings } =
+  const {
-    useAppState(
+    updateInfo,
-      useShallow((s) => ({
+    setUpdateInfo,
-        updateInfo: s.updateInfo,
+    imageUpdateInfo,
-        setUpdateInfo: s.setUpdateInfo,
+    setImageUpdateInfo,
-        appVersion: s.appVersion,
+    appVersion,
-        setAppVersion: s.setAppVersion,
+    setAppVersion,
-        appSettings: s.appSettings,
+    appSettings,
-      })),
+  } = useAppState(
-    );
+    useShallow((s) => ({
+      updateInfo: s.updateInfo,
+      setUpdateInfo: s.setUpdateInfo,
+      imageUpdateInfo: s.imageUpdateInfo,
+      setImageUpdateInfo: s.setImageUpdateInfo,
+      appVersion: s.appVersion,
+      setAppVersion: s.setAppVersion,
+      appSettings: s.appSettings,
+    })),
+  );
 
   const intervalRef = useRef<ReturnType<typeof setInterval> | null>(null);
 
@@ -47,11 +56,31 @@ export function useUpdates() {
     }
   }, [setUpdateInfo, appSettings?.dismissed_update_version]);
 
+  const checkImageUpdate = useCallback(async () => {
+    try {
+      const info = await commands.checkImageUpdate();
+      if (info) {
+        // Respect dismissed image digest
+        const dismissed = appSettings?.dismissed_image_digest;
+        if (dismissed && dismissed === info.remote_digest) {
+          setImageUpdateInfo(null);
+          return null;
+        }
+      }
+      setImageUpdateInfo(info);
+      return info;
+    } catch (e) {
+      console.error("Failed to check for image updates:", e);
+      return null;
+    }
+  }, [setImageUpdateInfo, appSettings?.dismissed_image_digest]);
+
   const startPeriodicCheck = useCallback(() => {
     if (intervalRef.current) return;
     intervalRef.current = setInterval(() => {
       if (appSettings?.auto_check_updates !== false) {
         checkForUpdates();
+        checkImageUpdate();
       }
     }, CHECK_INTERVAL_MS);
     return () => {
@@ -60,13 +89,15 @@ export function useUpdates() {
         intervalRef.current = null;
       }
     };
-  }, [checkForUpdates, appSettings?.auto_check_updates]);
+  }, [checkForUpdates, checkImageUpdate, appSettings?.auto_check_updates]);
 
   return {
     updateInfo,
+    imageUpdateInfo,
     appVersion,
     loadVersion,
     checkForUpdates,
+    checkImageUpdate,
     startPeriodicCheck,
   };
 }

app/src/index.css

@@ -53,3 +53,135 @@ body {
   to   { opacity: 1; transform: translate(-50%, 0); }
 }
 .animate-slide-down { animation: slide-down 0.2s ease-out; }
+
+/* Help dialog content styles */
+.help-content {
+  font-size: 0.8125rem;
+  line-height: 1.6;
+  color: var(--text-primary);
+}
+
+.help-content .help-h1 {
+  font-size: 1.5rem;
+  font-weight: 700;
+  margin: 0 0 1rem 0;
+  color: var(--text-primary);
+}
+
+.help-content .help-h2 {
+  font-size: 1.15rem;
+  font-weight: 600;
+  margin: 1.5rem 0 0.75rem 0;
+  padding-bottom: 0.375rem;
+  border-bottom: 1px solid var(--border-color);
+  color: var(--text-primary);
+}
+
+.help-content .help-h3 {
+  font-size: 0.95rem;
+  font-weight: 600;
+  margin: 1.25rem 0 0.5rem 0;
+  color: var(--text-primary);
+}
+
+.help-content .help-h4 {
+  font-size: 0.875rem;
+  font-weight: 600;
+  margin: 1rem 0 0.375rem 0;
+  color: var(--text-secondary);
+}
+
+.help-content .help-p {
+  margin: 0.5rem 0;
+}
+
+.help-content .help-ul,
+.help-content .help-ol {
+  margin: 0.5rem 0;
+  padding-left: 1.5rem;
+}
+
+.help-content .help-ul {
+  list-style-type: disc;
+}
+
+.help-content .help-ol {
+  list-style-type: decimal;
+}
+
+.help-content .help-ul li,
+.help-content .help-ol li {
+  margin: 0.25rem 0;
+}
+
+.help-content .help-code-block {
+  display: block;
+  background: var(--bg-primary);
+  border: 1px solid var(--border-color);
+  border-radius: 6px;
+  padding: 0.75rem 1rem;
+  margin: 0.5rem 0;
+  overflow-x: auto;
+  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
+  font-size: 0.75rem;
+  line-height: 1.5;
+  white-space: pre;
+}
+
+.help-content .help-inline-code {
+  background: var(--bg-tertiary);
+  border: 1px solid var(--border-color);
+  border-radius: 3px;
+  padding: 0.125rem 0.375rem;
+  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
+  font-size: 0.75rem;
+}
+
+.help-content .help-table {
+  width: 100%;
+  border-collapse: collapse;
+  margin: 0.5rem 0;
+  font-size: 0.75rem;
+}
+
+.help-content .help-table th,
+.help-content .help-table td {
+  border: 1px solid var(--border-color);
+  padding: 0.375rem 0.625rem;
+  text-align: left;
+}
+
+.help-content .help-table th {
+  background: var(--bg-tertiary);
+  font-weight: 600;
+}
+
+.help-content .help-table td {
+  background: var(--bg-primary);
+}
+
+.help-content .help-blockquote {
+  border-left: 3px solid var(--accent);
+  background: var(--bg-primary);
+  margin: 0.5rem 0;
+  padding: 0.5rem 0.75rem;
+  border-radius: 0 4px 4px 0;
+  color: var(--text-secondary);
+  font-size: 0.75rem;
+}
+
+.help-content .help-hr {
+  border: none;
+  border-top: 1px solid var(--border-color);
+  margin: 1.5rem 0;
+}
+
+.help-content .help-link {
+  color: var(--accent);
+  text-decoration: none;
+}
+
+.help-content .help-link:hover {
+  color: var(--accent-hover);
+  text-decoration: underline;
+}

app/src/lib/tauri-commands.ts

@@ -1,5 +1,5 @@
 import { invoke } from "@tauri-apps/api/core";
-import type { Project, ProjectPath, ContainerInfo, SiblingContainer, AppSettings, UpdateInfo, McpServer, FileEntry } from "./types";
+import type { Project, ProjectPath, ContainerInfo, SiblingContainer, AppSettings, UpdateInfo, ImageUpdateInfo, McpServer, FileEntry } from "./types";
 
 // Docker
 export const checkDocker = () => invoke<boolean>("check_docker");
@@ -83,3 +83,8 @@ export const uploadFileToContainer = (projectId: string, hostPath: string, conta
 export const getAppVersion = () => invoke<string>("get_app_version");
 export const checkForUpdates = () =>
   invoke<UpdateInfo | null>("check_for_updates");
+export const checkImageUpdate = () =>
+  invoke<ImageUpdateInfo | null>("check_image_update");
+
+// Help
+export const getHelpContent = () => invoke<string>("get_help_content");

app/src/lib/types.ts

@@ -20,7 +20,7 @@ export interface Project {
   paths: ProjectPath[];
   container_id: string | null;
   status: ProjectStatus;
-  auth_mode: AuthMode;
+  backend: Backend;
   bedrock_config: BedrockConfig | null;
   ollama_config: OllamaConfig | null;
   litellm_config: LiteLlmConfig | null;
@@ -45,7 +45,7 @@ export type ProjectStatus =
   | "stopping"
   | "error";
 
-export type AuthMode = "anthropic" | "bedrock" | "ollama" | "lit_llm";
+export type Backend = "anthropic" | "bedrock" | "ollama" | "lite_llm";
 
 export type BedrockAuthMethod = "static_credentials" | "profile" | "bearer_token";
 
@@ -116,6 +116,7 @@ export interface AppSettings {
   dismissed_update_version: string | null;
   timezone: string | null;
   default_microphone: string | null;
+  dismissed_image_digest: string | null;
 }
 
 export interface UpdateInfo {
@@ -133,6 +134,12 @@ export interface ReleaseAsset {
   size: number;
 }
 
+export interface ImageUpdateInfo {
+  remote_digest: string;
+  local_digest: string | null;
+  remote_updated_at: string | null;
+}
+
 export type McpTransportType = "stdio" | "http";
 
 export interface McpServer {

app/src/store/appState.ts

@@ -1,5 +1,5 @@
 import { create } from "zustand";
-import type { Project, TerminalSession, AppSettings, UpdateInfo, McpServer } from "../lib/types";
+import type { Project, TerminalSession, AppSettings, UpdateInfo, ImageUpdateInfo, McpServer } from "../lib/types";
 
 interface AppState {
   // Projects
@@ -24,6 +24,8 @@ interface AppState {
   removeMcpServerFromList: (id: string) => void;
 
   // UI state
+  terminalHasSelection: boolean;
+  setTerminalHasSelection: (has: boolean) => void;
   sidebarView: "projects" | "mcp" | "settings";
   setSidebarView: (view: "projects" | "mcp" | "settings") => void;
   dockerAvailable: boolean | null;
@@ -39,6 +41,10 @@ interface AppState {
   setUpdateInfo: (info: UpdateInfo | null) => void;
   appVersion: string;
   setAppVersion: (version: string) => void;
+
+  // Image update info
+  imageUpdateInfo: ImageUpdateInfo | null;
+  setImageUpdateInfo: (info: ImageUpdateInfo | null) => void;
 }
 
 export const useAppState = create<AppState>((set) => ({
@@ -96,6 +102,8 @@ export const useAppState = create<AppState>((set) => ({
     })),
 
   // UI state
+  terminalHasSelection: false,
+  setTerminalHasSelection: (has) => set({ terminalHasSelection: has }),
   sidebarView: "projects",
   setSidebarView: (view) => set({ sidebarView: view }),
   dockerAvailable: null,
@@ -111,4 +119,8 @@ export const useAppState = create<AppState>((set) => ({
   setUpdateInfo: (info) => set({ updateInfo: info }),
   appVersion: "",
   setAppVersion: (version) => set({ appVersion: version }),
+
+  // Image update info
+  imageUpdateInfo: null,
+  setImageUpdateInfo: (info) => set({ imageUpdateInfo: info }),
 }));