feat: add MCP server support with global library and per-project toggles

Add Model Context Protocol (MCP) server configuration support. Users can
define MCP servers globally (new sidebar tab) and enable them per-project.
Enabled servers are injected into containers as MCP_SERVERS_JSON env var
and merged into ~/.claude.json by the entrypoint.

Backend: McpServer model, McpStore (JSON + atomic writes), 4 CRUD commands,
container injection with fingerprint-based recreation detection.
Frontend: MCP sidebar tab, McpPanel/McpServerCard components, useMcpServers
hook, per-project MCP checkboxes in ProjectCard config.

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

.gitea/workflows/backfill-releases.yml

@@ -0,0 +1,84 @@
+name: Backfill Releases to GitHub
+
+on:
+  workflow_dispatch:
+
+jobs:
+  backfill:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Backfill all Gitea releases to GitHub
+        env:
+          GH_PAT: ${{ secrets.GH_PAT }}
+          GITEA_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+          GITEA_API: https://repo.anhonesthost.net/api/v1
+          GITEA_REPO: cybercovellc/triple-c
+          GITHUB_REPO: shadowdao/triple-c
+        run: |
+          set -e
+
+          echo "==> Fetching releases from Gitea..."
+          RELEASES=$(curl -sf \
+            -H "Authorization: token $GITEA_TOKEN" \
+            "$GITEA_API/repos/$GITEA_REPO/releases?limit=50")
+
+          echo "$RELEASES" | jq -c '.[]' | while read release; do
+            TAG=$(echo "$release" | jq -r '.tag_name')
+            NAME=$(echo "$release" | jq -r '.name')
+            BODY=$(echo "$release" | jq -r '.body')
+            IS_PRERELEASE=$(echo "$release" | jq -r '.prerelease')
+            IS_DRAFT=$(echo "$release" | jq -r '.draft')
+
+            EXISTS=$(curl -sf \
+              -H "Authorization: Bearer $GH_PAT" \
+              -H "Accept: application/vnd.github+json" \
+              "https://api.github.com/repos/$GITHUB_REPO/releases/tags/$TAG" \
+              -o /dev/null -w "%{http_code}" || true)
+
+            if [ "$EXISTS" = "200" ]; then
+              echo "==> Skipping $TAG (already exists on GitHub)"
+              continue
+            fi
+
+            echo "==> Creating release $TAG..."
+            RESPONSE=$(curl -sf -X POST \
+              -H "Authorization: Bearer $GH_PAT" \
+              -H "Accept: application/vnd.github+json" \
+              -H "Content-Type: application/json" \
+              https://api.github.com/repos/$GITHUB_REPO/releases \
+              -d "{
+                \"tag_name\": \"$TAG\",
+                \"name\": \"$NAME\",
+                \"body\": $(echo "$BODY" | jq -Rs .),
+                \"draft\": $IS_DRAFT,
+                \"prerelease\": $IS_PRERELEASE
+              }")
+
+            UPLOAD_URL=$(echo "$RESPONSE" | jq -r '.upload_url' | sed 's/{?name,label}//')
+
+            echo "$release" | jq -c '.assets[]?' | while read asset; do
+              ASSET_NAME=$(echo "$asset" | jq -r '.name')
+              ASSET_ID=$(echo "$asset" | jq -r '.id')
+
+              echo "  ==> Downloading $ASSET_NAME..."
+              DOWNLOAD_URL=$(echo "$asset" | jq -r '.browser_download_url')
+              curl -sfL -o "/tmp/$ASSET_NAME" \
+                -H "Authorization: token $GITEA_TOKEN" \
+                "$DOWNLOAD_URL"
+
+              echo "  ==> Uploading $ASSET_NAME to GitHub..."
+              ENCODED_NAME=$(python3 -c "import urllib.parse, sys; print(urllib.parse.quote(sys.argv[1]))" "$ASSET_NAME")
+              curl -sf -X POST \
+                -H "Authorization: Bearer $GH_PAT" \
+                -H "Accept: application/vnd.github+json" \
+                -H "Content-Type: application/octet-stream" \
+                --data-binary "@/tmp/$ASSET_NAME" \
+                "$UPLOAD_URL?name=$ENCODED_NAME"
+
+              echo "    Uploaded: $ASSET_NAME"
+            done
+
+            echo "==> Done: $TAG"
+          done
+
+          echo "==> Backfill complete."

.gitea/workflows/build-app.yml

@@ -20,15 +20,29 @@ jobs:
   build-linux:
     runs-on: ubuntu-latest
     steps:
-      - name: Install Node.js
+      - name: Install Node.js 22
         run: |
+          NEED_INSTALL=false
           if command -v node >/dev/null 2>&1; then
-            echo "Node.js already installed: $(node --version)"
+            NODE_MAJOR=$(node --version | sed 's/v\([0-9]*\).*/\1/')
+            OLD_NODE_DIR=$(dirname "$(which node)")
+            echo "Found Node.js $(node --version) at $(which node) (major: ${NODE_MAJOR})"
+            if [ "$NODE_MAJOR" -lt 22 ]; then
+              echo "Node.js ${NODE_MAJOR} is too old, removing before installing 22..."
+              sudo rm -f "${OLD_NODE_DIR}/node" "${OLD_NODE_DIR}/npm" "${OLD_NODE_DIR}/npx" "${OLD_NODE_DIR}/corepack"
+              hash -r
+              NEED_INSTALL=true
+            fi
           else
-            echo "Installing Node.js 22..."
+            echo "Node.js not found, installing 22..."
+            NEED_INSTALL=true
+          fi
+          if [ "$NEED_INSTALL" = true ]; then
             curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash -
             sudo apt-get install -y nodejs
+            hash -r
           fi
+          echo "Node.js at: $(which node)"
           node --version
           npm --version
 
@@ -81,22 +95,27 @@ jobs:
           else
             curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
           fi
-          . "$HOME/.cargo/env"
-          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+          export PATH="$HOME/.cargo/bin:$PATH"
           rustc --version
           cargo --version
 
       - name: Install frontend dependencies
         working-directory: ./app
-        run: npm ci
+        run: |
+          rm -rf node_modules package-lock.json
+          npm install
 
       - name: Install Tauri CLI
         working-directory: ./app
-        run: npx tauri --version || npm install @tauri-apps/cli
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri --version || npm install @tauri-apps/cli
 
       - name: Build Tauri app
         working-directory: ./app
-        run: npx tauri build
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri build
 
       - name: Collect artifacts
         run: |
@@ -135,12 +154,21 @@ jobs:
   build-macos:
     runs-on: macos-latest
     steps:
-      - name: Install Node.js
+      - name: Install Node.js 22
         run: |
-          if command -v node &>/dev/null; then
-            echo "Node.js already installed: $(node --version)"
+          NEED_INSTALL=false
+          if command -v node >/dev/null 2>&1; then
+            NODE_MAJOR=$(node --version | sed 's/v\([0-9]*\).*/\1/')
+            echo "Found Node.js $(node --version) (major: ${NODE_MAJOR})"
+            if [ "$NODE_MAJOR" -lt 22 ]; then
+              echo "Node.js ${NODE_MAJOR} is too old, upgrading to 22..."
+              NEED_INSTALL=true
+            fi
           else
-            echo "Installing Node.js 22 via Homebrew..."
+            echo "Node.js not found, installing 22..."
+            NEED_INSTALL=true
+          fi
+          if [ "$NEED_INSTALL" = true ]; then
             brew install node@22
             brew link --overwrite node@22
           fi
@@ -177,23 +205,28 @@ jobs:
           else
             curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
           fi
-          . "$HOME/.cargo/env"
-          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+          export PATH="$HOME/.cargo/bin:$PATH"
           rustup target add aarch64-apple-darwin x86_64-apple-darwin
           rustc --version
           cargo --version
 
       - name: Install frontend dependencies
         working-directory: ./app
-        run: npm ci
+        run: |
+          rm -rf node_modules
+          npm install
 
       - name: Install Tauri CLI
         working-directory: ./app
-        run: npx tauri --version || npm install @tauri-apps/cli
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri --version || npm install @tauri-apps/cli
 
       - name: Build Tauri app (universal)
         working-directory: ./app
-        run: npx tauri build --target universal-apple-darwin
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri build --target universal-apple-darwin
 
       - name: Collect artifacts
         run: |

.gitea/workflows/sync-release.yml

@@ -0,0 +1,60 @@
+name: Sync Release to GitHub
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  sync-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Mirror release to GitHub
+        env:
+          GH_PAT: ${{ secrets.GH_PAT }}
+          GITHUB_REPO: shadowdao/triple-c
+          RELEASE_TAG: ${{ gitea.event.release.tag_name }}
+          RELEASE_NAME: ${{ gitea.event.release.name }}
+          RELEASE_BODY: ${{ gitea.event.release.body }}
+          IS_PRERELEASE: ${{ gitea.event.release.prerelease }}
+          IS_DRAFT: ${{ gitea.event.release.draft }}
+        run: |
+          set -e
+
+          echo "==> Creating release $RELEASE_TAG on GitHub..."
+
+          RESPONSE=$(curl -sf -X POST \
+            -H "Authorization: Bearer $GH_PAT" \
+            -H "Accept: application/vnd.github+json" \
+            -H "Content-Type: application/json" \
+            https://api.github.com/repos/$GITHUB_REPO/releases \
+            -d "{
+              \"tag_name\": \"$RELEASE_TAG\",
+              \"name\": \"$RELEASE_NAME\",
+              \"body\": $(echo "$RELEASE_BODY" | jq -Rs .),
+              \"draft\": $IS_DRAFT,
+              \"prerelease\": $IS_PRERELEASE
+            }")
+
+          UPLOAD_URL=$(echo "$RESPONSE" | jq -r '.upload_url' | sed 's/{?name,label}//')
+          echo "Release created. Upload URL: $UPLOAD_URL"
+
+          echo '${{ toJSON(gitea.event.release.assets) }}' | jq -c '.[]' | while read asset; do
+            ASSET_NAME=$(echo "$asset" | jq -r '.name')
+            ASSET_URL=$(echo "$asset" | jq -r '.browser_download_url')
+
+            echo "==> Downloading asset: $ASSET_NAME"
+            curl -sfL -o "/tmp/$ASSET_NAME" "$ASSET_URL"
+
+            echo "==> Uploading $ASSET_NAME to GitHub..."
+            ENCODED_NAME=$(python3 -c "import urllib.parse, sys; print(urllib.parse.quote(sys.argv[1]))" "$ASSET_NAME")
+            curl -sf -X POST \
+              -H "Authorization: Bearer $GH_PAT" \
+              -H "Accept: application/vnd.github+json" \
+              -H "Content-Type: application/octet-stream" \
+              --data-binary "@/tmp/$ASSET_NAME" \
+              "$UPLOAD_URL?name=$ENCODED_NAME"
+
+            echo "  Uploaded: $ASSET_NAME"
+          done
+
+          echo "==> Release sync complete."

TODO.md

@@ -0,0 +1,60 @@
+# TODO / Future Improvements
+
+## In-App Auto-Update via `tauri-plugin-updater`
+
+**Priority:** High
+**Status:** Planned
+
+Currently the app detects available updates via the Gitea API (`check_for_updates` command) but cannot apply them. Users must manually download and install the new version. On macOS and Linux this is a poor experience compared to Windows (where NSIS handles upgrades cleanly).
+
+### Recommended approach: `tauri-plugin-updater`
+
+Full in-app auto-update: detects, downloads, verifies, and applies updates seamlessly on all platforms. The user clicks "Update" and the app restarts with the new version.
+
+### Requirements
+
+1. **Generate a Tauri update signing key pair** (this is Tauri's own Ed25519 key, not OS code signing):
+   ```bash
+   npx @tauri-apps/cli signer generate -w ~/.tauri/triple-c.key
+   ```
+   Set `TAURI_SIGNING_PRIVATE_KEY` and `TAURI_SIGNING_PRIVATE_KEY_PASSWORD` in CI.
+
+2. **Add `tauri-plugin-updater`** to Rust and JS dependencies.
+
+3. **Create an update endpoint** that returns Tauri's expected JSON format:
+   ```json
+   {
+     "version": "v0.1.100",
+     "notes": "Changelog here",
+     "pub_date": "2026-03-01T00:00:00Z",
+     "platforms": {
+       "darwin-x86_64": { "signature": "...", "url": "https://..." },
+       "darwin-aarch64": { "signature": "...", "url": "https://..." },
+       "linux-x86_64": { "signature": "...", "url": "https://..." },
+       "windows-x86_64": { "signature": "...", "url": "https://..." }
+     }
+   }
+   ```
+   This could be a static JSON file uploaded alongside release assets, or a small API that reads from Gitea releases and reformats.
+
+4. **Configure the updater** in `tauri.conf.json`:
+   ```json
+   "plugins": {
+     "updater": {
+       "endpoints": ["https://repo.anhonesthost.net/...update-endpoint..."],
+       "pubkey": "<public key from step 1>"
+     }
+   }
+   ```
+
+5. **Add frontend UI** for the update prompt (replace or enhance the existing update check flow).
+
+6. **Update CI pipeline** to:
+   - Sign bundles with the Tauri key during build
+   - Upload `.sig` files alongside installers
+   - Generate/upload the update endpoint JSON
+
+### References
+- https://v2.tauri.app/plugin/updater/
+- Existing update check code: `app/src-tauri/src/commands/update_commands.rs`
+- Existing models: `app/src-tauri/src/models/update_info.rs`

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

@@ -0,0 +1,38 @@
+use tauri::State;
+
+use crate::models::McpServer;
+use crate::AppState;
+
+#[tauri::command]
+pub async fn list_mcp_servers(state: State<'_, AppState>) -> Result<Vec<McpServer>, String> {
+    Ok(state.mcp_store.list())
+}
+
+#[tauri::command]
+pub async fn add_mcp_server(
+    name: String,
+    state: State<'_, AppState>,
+) -> Result<McpServer, String> {
+    let name = name.trim().to_string();
+    if name.is_empty() {
+        return Err("MCP server name cannot be empty.".to_string());
+    }
+    let server = McpServer::new(name);
+    state.mcp_store.add(server)
+}
+
+#[tauri::command]
+pub async fn update_mcp_server(
+    server: McpServer,
+    state: State<'_, AppState>,
+) -> Result<McpServer, String> {
+    state.mcp_store.update(server)
+}
+
+#[tauri::command]
+pub async fn remove_mcp_server(
+    server_id: String,
+    state: State<'_, AppState>,
+) -> Result<(), String> {
+    state.mcp_store.remove(&server_id)
+}

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

@@ -1,4 +1,5 @@
 pub mod docker_commands;
+pub mod mcp_commands;
 pub mod project_commands;
 pub mod settings_commands;
 pub mod terminal_commands;

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

@@ -1,10 +1,20 @@
-use tauri::State;
+use tauri::{Emitter, State};
 
 use crate::docker;
-use crate::models::{container_config, AuthMode, Project, ProjectPath, ProjectStatus};
+use crate::models::{container_config, AuthMode, McpServer, Project, ProjectPath, ProjectStatus};
 use crate::storage::secure;
 use crate::AppState;
 
+fn emit_progress(app_handle: &tauri::AppHandle, project_id: &str, message: &str) {
+    let _ = app_handle.emit(
+        "container-progress",
+        serde_json::json!({
+            "project_id": project_id,
+            "message": message,
+        }),
+    );
+}
+
 /// Extract secret fields from a project and store them in the OS keychain.
 fn store_secrets_for_project(project: &Project) -> Result<(), String> {
     if let Some(ref token) = project.git_token {
@@ -81,12 +91,19 @@ pub async fn remove_project(
     state: State<'_, AppState>,
 ) -> Result<(), String> {
     // Stop and remove container if it exists
-    if let Some(project) = state.projects_store.get(&project_id) {
+    if let Some(ref project) = state.projects_store.get(&project_id) {
         if let Some(ref container_id) = project.container_id {
             state.exec_manager.close_sessions_for_container(container_id).await;
             let _ = docker::stop_container(container_id).await;
             let _ = docker::remove_container(container_id).await;
         }
+        // Clean up the snapshot image + volumes
+        if let Err(e) = docker::remove_snapshot_image(project).await {
+            log::warn!("Failed to remove snapshot image for project {}: {}", project_id, e);
+        }
+        if let Err(e) = docker::remove_project_volumes(project).await {
+            log::warn!("Failed to remove project volumes for project {}: {}", project_id, e);
+        }
     }
 
     // Clean up keychain secrets for this project
@@ -109,6 +126,7 @@ pub async fn update_project(
 #[tauri::command]
 pub async fn start_project_container(
     project_id: String,
+    app_handle: tauri::AppHandle,
     state: State<'_, AppState>,
 ) -> Result<Project, String> {
     let mut project = state
@@ -124,6 +142,12 @@ pub async fn start_project_container(
     let settings = state.settings_store.get();
     let image_name = container_config::resolve_image_name(&settings.image_source, &settings.custom_image_name);
 
+    // Resolve enabled MCP servers for this project
+    let all_mcp_servers = state.mcp_store.list();
+    let enabled_mcp: Vec<McpServer> = project.enabled_mcp_servers.iter()
+        .filter_map(|id| all_mcp_servers.iter().find(|s| &s.id == id).cloned())
+        .collect();
+
     // Validate auth mode requirements
     if project.auth_mode == AuthMode::Bedrock {
         let bedrock = project.bedrock_config.as_ref()
@@ -140,6 +164,7 @@ pub async fn start_project_container(
     // Wrap container operations so that any failure resets status to Stopped.
     let result: Result<String, String> = async {
         // Ensure image exists
+        emit_progress(&app_handle, &project_id, "Checking image...");
         if !docker::image_exists(&image_name).await? {
             return Err(format!("Docker image '{}' not found. Please pull or build the image first.", image_name));
         }
@@ -153,48 +178,80 @@ pub async fn start_project_container(
         // AWS config path from global settings
         let aws_config_path = settings.global_aws.aws_config_path.clone();
 
-        // Check for existing container
         let container_id = if let Some(existing_id) = docker::find_existing_container(&project).await? {
-            let needs_recreation = docker::container_needs_recreation(
-                    &existing_id,
-                    &project,
-                    settings.global_claude_instructions.as_deref(),
-                    &settings.global_custom_env_vars,
-                    settings.timezone.as_deref(),
-                )
-                .await
-                .unwrap_or(false);
-            if needs_recreation {
-                log::info!("Container config changed, recreating container for project {}", project.id);
+            // Check if config changed — if so, snapshot + recreate
+            let needs_recreate = docker::container_needs_recreation(
+                &existing_id,
+                &project,
+                settings.global_claude_instructions.as_deref(),
+                &settings.global_custom_env_vars,
+                settings.timezone.as_deref(),
+                &enabled_mcp,
+            ).await.unwrap_or(false);
+
+            if needs_recreate {
+                log::info!("Container config changed for project {} — committing snapshot and recreating", project.id);
+                // Snapshot the filesystem before destroying
+                emit_progress(&app_handle, &project_id, "Saving container state...");
+                if let Err(e) = docker::commit_container_snapshot(&existing_id, &project).await {
+                    log::warn!("Failed to snapshot container before recreation: {}", e);
+                }
+                emit_progress(&app_handle, &project_id, "Recreating container...");
                 let _ = docker::stop_container(&existing_id).await;
                 docker::remove_container(&existing_id).await?;
+
+                // Create from snapshot image (preserves system-level changes)
+                let snapshot_image = docker::get_snapshot_image_name(&project);
+                let create_image = if docker::image_exists(&snapshot_image).await.unwrap_or(false) {
+                    snapshot_image
+                } else {
+                    image_name.clone()
+                };
+
                 let new_id = docker::create_container(
                     &project,
                     &docker_socket,
-                    &image_name,
+                    &create_image,
                     aws_config_path.as_deref(),
                     &settings.global_aws,
                     settings.global_claude_instructions.as_deref(),
                     &settings.global_custom_env_vars,
                     settings.timezone.as_deref(),
+                    &enabled_mcp,
                 ).await?;
+                emit_progress(&app_handle, &project_id, "Starting container...");
                 docker::start_container(&new_id).await?;
                 new_id
             } else {
+                emit_progress(&app_handle, &project_id, "Starting container...");
                 docker::start_container(&existing_id).await?;
                 existing_id
             }
         } else {
+            // Container doesn't exist (first start, or Docker pruned it).
+            // Check for a snapshot image first — it preserves system-level
+            // changes (apt/pip/npm installs) from the previous session.
+            let snapshot_image = docker::get_snapshot_image_name(&project);
+            let create_image = if docker::image_exists(&snapshot_image).await.unwrap_or(false) {
+                log::info!("Creating container from snapshot image for project {}", project.id);
+                snapshot_image
+            } else {
+                image_name.clone()
+            };
+
+            emit_progress(&app_handle, &project_id, "Creating container...");
             let new_id = docker::create_container(
                 &project,
                 &docker_socket,
-                &image_name,
+                &create_image,
                 aws_config_path.as_deref(),
                 &settings.global_aws,
                 settings.global_claude_instructions.as_deref(),
                 &settings.global_custom_env_vars,
                 settings.timezone.as_deref(),
+                &enabled_mcp,
             ).await?;
+            emit_progress(&app_handle, &project_id, "Starting container...");
             docker::start_container(&new_id).await?;
             new_id
         };
@@ -222,6 +279,7 @@ pub async fn start_project_container(
 #[tauri::command]
 pub async fn stop_project_container(
     project_id: String,
+    app_handle: tauri::AppHandle,
     state: State<'_, AppState>,
 ) -> Result<(), String> {
     let project = state
@@ -229,22 +287,26 @@ pub async fn stop_project_container(
         .get(&project_id)
         .ok_or_else(|| format!("Project {} not found", project_id))?;
 
-    if let Some(ref container_id) = project.container_id {
-        state.projects_store.update_status(&project_id, ProjectStatus::Stopping)?;
+    state.projects_store.update_status(&project_id, ProjectStatus::Stopping)?;
 
+    if let Some(ref container_id) = project.container_id {
         // Close exec sessions for this project
+        emit_progress(&app_handle, &project_id, "Stopping container...");
         state.exec_manager.close_sessions_for_container(container_id).await;
 
-        docker::stop_container(container_id).await?;
-        state.projects_store.update_status(&project_id, ProjectStatus::Stopped)?;
+        if let Err(e) = docker::stop_container(container_id).await {
+            log::warn!("Docker stop failed for container {} (project {}): {} — resetting to Stopped anyway", container_id, project_id, e);
+        }
     }
 
+    state.projects_store.update_status(&project_id, ProjectStatus::Stopped)?;
     Ok(())
 }
 
 #[tauri::command]
 pub async fn rebuild_project_container(
     project_id: String,
+    app_handle: tauri::AppHandle,
     state: State<'_, AppState>,
 ) -> Result<Project, String> {
     let project = state
@@ -260,8 +322,16 @@ pub async fn rebuild_project_container(
         state.projects_store.set_container_id(&project_id, None)?;
     }
 
+    // Remove snapshot image + volumes so Reset creates from the clean base image
+    if let Err(e) = docker::remove_snapshot_image(&project).await {
+        log::warn!("Failed to remove snapshot image for project {}: {}", project_id, e);
+    }
+    if let Err(e) = docker::remove_project_volumes(&project).await {
+        log::warn!("Failed to remove project volumes for project {}: {}", project_id, e);
+    }
+
     // Start fresh
-    start_project_container(project_id, state).await
+    start_project_container(project_id, app_handle, state).await
 }
 
 fn default_docker_socket() -> String {

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

@@ -1,23 +1,28 @@
 use bollard::Docker;
-use std::sync::OnceLock;
+use std::sync::Mutex;
 
-static DOCKER: OnceLock<Result<Docker, String>> = OnceLock::new();
+static DOCKER: Mutex<Option<Docker>> = Mutex::new(None);
 
-pub fn get_docker() -> Result<&'static Docker, String> {
-    let result = DOCKER.get_or_init(|| {
-        Docker::connect_with_local_defaults()
-            .map_err(|e| format!("Failed to connect to Docker daemon: {}", e))
-    });
-    match result {
-        Ok(docker) => Ok(docker),
-        Err(e) => Err(e.clone()),
+pub fn get_docker() -> Result<Docker, String> {
+    let mut guard = DOCKER.lock().map_err(|e| format!("Lock poisoned: {}", e))?;
+    if let Some(docker) = guard.as_ref() {
+        return Ok(docker.clone());
     }
+    let docker = Docker::connect_with_local_defaults()
+        .map_err(|e| format!("Failed to connect to Docker daemon: {}", e))?;
+    guard.replace(docker.clone());
+    Ok(docker)
 }
 
 pub async fn check_docker_available() -> Result<bool, String> {
     let docker = get_docker()?;
     match docker.ping().await {
         Ok(_) => Ok(true),
-        Err(e) => Err(format!("Docker daemon not responding: {}", e)),
+        Err(_) => {
+            // Connection object exists but daemon not responding — clear cache
+            let mut guard = DOCKER.lock().map_err(|e| format!("Lock poisoned: {}", e))?;
+            *guard = None;
+            Ok(false)
+        }
     }
 }

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

@@ -2,13 +2,14 @@ use bollard::container::{
     Config, CreateContainerOptions, ListContainersOptions, RemoveContainerOptions,
     StartContainerOptions, StopContainerOptions,
 };
+use bollard::image::{CommitContainerOptions, RemoveImageOptions};
 use bollard::models::{ContainerSummary, HostConfig, Mount, MountTypeEnum, PortBinding};
 use std::collections::HashMap;
 use std::collections::hash_map::DefaultHasher;
 use std::hash::{Hash, Hasher};
 
 use super::client::get_docker;
-use crate::models::{AuthMode, BedrockAuthMethod, ContainerInfo, EnvVar, GlobalAwsSettings, PortMapping, Project, ProjectPath};
+use crate::models::{AuthMode, BedrockAuthMethod, ContainerInfo, EnvVar, GlobalAwsSettings, McpServer, McpTransportType, PortMapping, Project, ProjectPath};
 
 const SCHEDULER_INSTRUCTIONS: &str = r#"## Scheduled Tasks
 
@@ -40,6 +41,42 @@ After tasks run, check notifications with `triple-c-scheduler notifications` and
 ### Timezone
 Scheduled times use the container's configured timezone (check with `date`). If no timezone is configured, UTC is used."#;
 
+/// Build the full CLAUDE_INSTRUCTIONS value by merging global + project
+/// instructions, appending port mapping docs, and appending scheduler docs.
+/// Used by both create_container() and container_needs_recreation() to ensure
+/// the same value is produced in both paths.
+fn build_claude_instructions(
+    global_instructions: Option<&str>,
+    project_instructions: Option<&str>,
+    port_mappings: &[PortMapping],
+) -> Option<String> {
+    let mut combined = merge_claude_instructions(global_instructions, project_instructions);
+
+    if !port_mappings.is_empty() {
+        let mut port_lines: Vec<String> = Vec::new();
+        port_lines.push("## Available Port Mappings".to_string());
+        port_lines.push("The following ports are mapped from the host to this container. Use these container ports when starting services that need to be accessible from the host:".to_string());
+        for pm in port_mappings {
+            port_lines.push(format!(
+                "- Host port {} -> Container port {} ({})",
+                pm.host_port, pm.container_port, pm.protocol
+            ));
+        }
+        let port_info = port_lines.join("\n");
+        combined = Some(match combined {
+            Some(existing) => format!("{}\n\n{}", existing, port_info),
+            None => port_info,
+        });
+    }
+
+    combined = Some(match combined {
+        Some(existing) => format!("{}\n\n{}", existing, SCHEDULER_INSTRUCTIONS),
+        None => SCHEDULER_INSTRUCTIONS.to_string(),
+    });
+
+    combined
+}
+
 /// Compute a fingerprint string for the custom environment variables.
 /// Sorted alphabetically so order changes do not cause spurious recreation.
 fn compute_env_fingerprint(custom_env_vars: &[EnvVar]) -> String {
@@ -139,6 +176,61 @@ fn compute_ports_fingerprint(port_mappings: &[PortMapping]) -> String {
     format!("{:x}", hasher.finish())
 }
 
+/// Build the JSON value for MCP servers config to be injected into ~/.claude.json.
+/// Produces `{"mcpServers": {"name": {"type": "stdio", ...}, ...}}`.
+fn build_mcp_servers_json(servers: &[McpServer]) -> String {
+    let mut mcp_map = serde_json::Map::new();
+    for server in servers {
+        let mut entry = serde_json::Map::new();
+        match server.transport_type {
+            McpTransportType::Stdio => {
+                entry.insert("type".to_string(), serde_json::json!("stdio"));
+                if let Some(ref cmd) = server.command {
+                    entry.insert("command".to_string(), serde_json::json!(cmd));
+                }
+                if !server.args.is_empty() {
+                    entry.insert("args".to_string(), serde_json::json!(server.args));
+                }
+                if !server.env.is_empty() {
+                    entry.insert("env".to_string(), serde_json::json!(server.env));
+                }
+            }
+            McpTransportType::Http => {
+                entry.insert("type".to_string(), serde_json::json!("http"));
+                if let Some(ref url) = server.url {
+                    entry.insert("url".to_string(), serde_json::json!(url));
+                }
+                if !server.headers.is_empty() {
+                    entry.insert("headers".to_string(), serde_json::json!(server.headers));
+                }
+            }
+            McpTransportType::Sse => {
+                entry.insert("type".to_string(), serde_json::json!("sse"));
+                if let Some(ref url) = server.url {
+                    entry.insert("url".to_string(), serde_json::json!(url));
+                }
+                if !server.headers.is_empty() {
+                    entry.insert("headers".to_string(), serde_json::json!(server.headers));
+                }
+            }
+        }
+        mcp_map.insert(server.name.clone(), serde_json::Value::Object(entry));
+    }
+    let wrapper = serde_json::json!({ "mcpServers": mcp_map });
+    serde_json::to_string(&wrapper).unwrap_or_default()
+}
+
+/// Compute a fingerprint for MCP server configuration so we can detect changes.
+fn compute_mcp_fingerprint(servers: &[McpServer]) -> String {
+    if servers.is_empty() {
+        return String::new();
+    }
+    let json = build_mcp_servers_json(servers);
+    let mut hasher = DefaultHasher::new();
+    json.hash(&mut hasher);
+    format!("{:x}", hasher.finish())
+}
+
 pub async fn find_existing_container(project: &Project) -> Result<Option<String>, String> {
     let docker = get_docker()?;
     let container_name = project.container_name();
@@ -178,6 +270,7 @@ pub async fn create_container(
     global_claude_instructions: Option<&str>,
     global_custom_env_vars: &[EnvVar],
     timezone: Option<&str>,
+    mcp_servers: &[McpServer],
 ) -> Result<String, String> {
     let docker = get_docker()?;
     let container_name = project.container_name();
@@ -307,38 +400,23 @@ pub async fn create_container(
         }
     }
 
-    // Claude instructions (global + per-project, plus port mapping info)
-    let mut combined_instructions = merge_claude_instructions(
+    // Claude instructions (global + per-project, plus port mapping info + scheduler docs)
+    let combined_instructions = build_claude_instructions(
         global_claude_instructions,
         project.claude_instructions.as_deref(),
+        &project.port_mappings,
     );
-    if !project.port_mappings.is_empty() {
-        let mut port_lines: Vec<String> = Vec::new();
-        port_lines.push("## Available Port Mappings".to_string());
-        port_lines.push("The following ports are mapped from the host to this container. Use these container ports when starting services that need to be accessible from the host:".to_string());
-        for pm in &project.port_mappings {
-            port_lines.push(format!(
-                "- Host port {} -> Container port {} ({})",
-                pm.host_port, pm.container_port, pm.protocol
-            ));
-        }
-        let port_info = port_lines.join("\n");
-        combined_instructions = Some(match combined_instructions {
-            Some(existing) => format!("{}\n\n{}", existing, port_info),
-            None => port_info,
-        });
-    }
-    // Scheduler instructions (always appended so all containers get scheduling docs)
-    let scheduler_docs = SCHEDULER_INSTRUCTIONS;
-    combined_instructions = Some(match combined_instructions {
-        Some(existing) => format!("{}\n\n{}", existing, scheduler_docs),
-        None => scheduler_docs.to_string(),
-    });
 
     if let Some(ref instructions) = combined_instructions {
         env_vars.push(format!("CLAUDE_INSTRUCTIONS={}", instructions));
     }
 
+    // MCP servers config
+    if !mcp_servers.is_empty() {
+        let mcp_json = build_mcp_servers_json(mcp_servers);
+        env_vars.push(format!("MCP_SERVERS_JSON={}", mcp_json));
+    }
+
     let mut mounts: Vec<Mount> = Vec::new();
 
     // Project directories -> /workspace/{mount_name}
@@ -352,7 +430,19 @@ pub async fn create_container(
         });
     }
 
-    // Named volume for claude config persistence
+    // Named volume for the entire home directory — preserves ~/.claude.json,
+    // ~/.local (pip/npm globals), and any other user-level state across
+    // container stop/start cycles.
+    mounts.push(Mount {
+        target: Some("/home/claude".to_string()),
+        source: Some(format!("triple-c-home-{}", project.id)),
+        typ: Some(MountTypeEnum::VOLUME),
+        read_only: Some(false),
+        ..Default::default()
+    });
+
+    // Named volume for claude config persistence — mounted as a nested volume
+    // inside the home volume; Docker gives the more-specific mount precedence.
     mounts.push(Mount {
         target: Some("/home/claude/.claude".to_string()),
         source: Some(format!("triple-c-claude-config-{}", project.id)),
@@ -446,6 +536,7 @@ pub async fn create_container(
     labels.insert("triple-c.ports-fingerprint".to_string(), compute_ports_fingerprint(&project.port_mappings));
     labels.insert("triple-c.image".to_string(), image_name.to_string());
     labels.insert("triple-c.timezone".to_string(), timezone.unwrap_or("").to_string());
+    labels.insert("triple-c.mcp-fingerprint".to_string(), compute_mcp_fingerprint(mcp_servers));
 
     let host_config = HostConfig {
         mounts: Some(mounts),
@@ -523,6 +614,83 @@ pub async fn remove_container(container_id: &str) -> Result<(), String> {
         .map_err(|e| format!("Failed to remove container: {}", e))
 }
 
+/// Return the snapshot image name for a project.
+pub fn get_snapshot_image_name(project: &Project) -> String {
+    format!("triple-c-snapshot-{}:latest", project.id)
+}
+
+/// Commit the container's filesystem to a snapshot image so that system-level
+/// changes (apt/pip/npm installs, ~/.claude.json, etc.) survive container
+/// removal. The Config is left empty so that secrets injected as env vars are
+/// NOT baked into the image.
+pub async fn commit_container_snapshot(container_id: &str, project: &Project) -> Result<(), String> {
+    let docker = get_docker()?;
+    let image_name = get_snapshot_image_name(project);
+
+    // Parse repo:tag
+    let (repo, tag) = match image_name.rsplit_once(':') {
+        Some((r, t)) => (r.to_string(), t.to_string()),
+        None => (image_name.clone(), "latest".to_string()),
+    };
+
+    let options = CommitContainerOptions {
+        container: container_id.to_string(),
+        repo: repo.clone(),
+        tag: tag.clone(),
+        pause: true,
+        ..Default::default()
+    };
+
+    // Empty config — no env vars / cmd baked in
+    let config = Config::<String> {
+        ..Default::default()
+    };
+
+    docker
+        .commit_container(options, config)
+        .await
+        .map_err(|e| format!("Failed to commit container snapshot: {}", e))?;
+
+    log::info!("Committed container {} as snapshot {}:{}", container_id, repo, tag);
+    Ok(())
+}
+
+/// Remove the snapshot image for a project (used on Reset / project removal).
+pub async fn remove_snapshot_image(project: &Project) -> Result<(), String> {
+    let docker = get_docker()?;
+    let image_name = get_snapshot_image_name(project);
+
+    docker
+        .remove_image(
+            &image_name,
+            Some(RemoveImageOptions {
+                force: true,
+                noprune: false,
+            }),
+            None,
+        )
+        .await
+        .map_err(|e| format!("Failed to remove snapshot image {}: {}", image_name, e))?;
+
+    log::info!("Removed snapshot image {}", image_name);
+    Ok(())
+}
+
+/// Remove both named volumes for a project (used on Reset / project removal).
+pub async fn remove_project_volumes(project: &Project) -> Result<(), String> {
+    let docker = get_docker()?;
+    for vol in [
+        format!("triple-c-home-{}", project.id),
+        format!("triple-c-claude-config-{}", project.id),
+    ] {
+        match docker.remove_volume(&vol, None).await {
+            Ok(_) => log::info!("Removed volume {}", vol),
+            Err(e) => log::warn!("Failed to remove volume {} (may not exist): {}", vol, e),
+        }
+    }
+    Ok(())
+}
+
 /// Check whether the existing container's configuration still matches the
 /// current project settings.  Returns `true` when the container must be
 /// recreated (mounts or env vars differ).
@@ -532,6 +700,7 @@ pub async fn container_needs_recreation(
     global_claude_instructions: Option<&str>,
     global_custom_env_vars: &[EnvVar],
     timezone: Option<&str>,
+    mcp_servers: &[McpServer],
 ) -> Result<bool, String> {
     let docker = get_docker()?;
     let info = docker
@@ -685,9 +854,10 @@ pub async fn container_needs_recreation(
     }
 
     // ── Claude instructions ───────────────────────────────────────────────
-    let expected_instructions = merge_claude_instructions(
+    let expected_instructions = build_claude_instructions(
         global_claude_instructions,
         project.claude_instructions.as_deref(),
+        &project.port_mappings,
     );
     let container_instructions = get_env("CLAUDE_INSTRUCTIONS");
     if container_instructions.as_deref() != expected_instructions.as_deref() {
@@ -695,6 +865,14 @@ pub async fn container_needs_recreation(
         return Ok(true);
     }
 
+    // ── MCP servers fingerprint ─────────────────────────────────────────
+    let expected_mcp_fp = compute_mcp_fingerprint(mcp_servers);
+    let container_mcp_fp = get_label("triple-c.mcp-fingerprint").unwrap_or_default();
+    if container_mcp_fp != expected_mcp_fp {
+        log::info!("MCP servers fingerprint mismatch (container={:?}, expected={:?})", container_mcp_fp, expected_mcp_fp);
+        return Ok(true);
+    }
+
     Ok(false)
 }
 

app/src-tauri/src/lib.rs

@@ -7,11 +7,13 @@ mod storage;
 use docker::exec::ExecSessionManager;
 use storage::projects_store::ProjectsStore;
 use storage::settings_store::SettingsStore;
+use storage::mcp_store::McpStore;
 use tauri::Manager;
 
 pub struct AppState {
     pub projects_store: ProjectsStore,
     pub settings_store: SettingsStore,
+    pub mcp_store: McpStore,
     pub exec_manager: ExecSessionManager,
 }
 
@@ -32,6 +34,13 @@ pub fn run() {
             panic!("Failed to initialize settings store: {}", e);
         }
     };
+    let mcp_store = match McpStore::new() {
+        Ok(s) => s,
+        Err(e) => {
+            log::error!("Failed to initialize MCP store: {}", e);
+            panic!("Failed to initialize MCP store: {}", e);
+        }
+    };
 
     tauri::Builder::default()
         .plugin(tauri_plugin_store::Builder::default().build())
@@ -40,6 +49,7 @@ pub fn run() {
         .manage(AppState {
             projects_store,
             settings_store,
+            mcp_store,
             exec_manager: ExecSessionManager::new(),
         })
         .setup(|app| {
@@ -91,6 +101,11 @@ pub fn run() {
             commands::terminal_commands::terminal_resize,
             commands::terminal_commands::close_terminal_session,
             commands::terminal_commands::paste_image_to_terminal,
+            // MCP
+            commands::mcp_commands::list_mcp_servers,
+            commands::mcp_commands::add_mcp_server,
+            commands::mcp_commands::update_mcp_server,
+            commands::mcp_commands::remove_mcp_server,
             // Updates
             commands::update_commands::get_app_version,
             commands::update_commands::check_for_updates,

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

@@ -0,0 +1,52 @@
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "snake_case")]
+pub enum McpTransportType {
+    Stdio,
+    Http,
+    Sse,
+}
+
+impl Default for McpTransportType {
+    fn default() -> Self {
+        Self::Stdio
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct McpServer {
+    pub id: String,
+    pub name: String,
+    #[serde(default)]
+    pub transport_type: McpTransportType,
+    pub command: Option<String>,
+    #[serde(default)]
+    pub args: Vec<String>,
+    #[serde(default)]
+    pub env: HashMap<String, String>,
+    pub url: Option<String>,
+    #[serde(default)]
+    pub headers: HashMap<String, String>,
+    pub created_at: String,
+    pub updated_at: String,
+}
+
+impl McpServer {
+    pub fn new(name: String) -> Self {
+        let now = chrono::Utc::now().to_rfc3339();
+        Self {
+            id: uuid::Uuid::new_v4().to_string(),
+            name,
+            transport_type: McpTransportType::default(),
+            command: None,
+            args: Vec::new(),
+            env: HashMap::new(),
+            url: None,
+            headers: HashMap::new(),
+            created_at: now.clone(),
+            updated_at: now,
+        }
+    }
+}

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

@@ -2,8 +2,10 @@ pub mod project;
 pub mod container_config;
 pub mod app_settings;
 pub mod update_info;
+pub mod mcp_server;
 
 pub use project::*;
 pub use container_config::*;
 pub use app_settings::*;
 pub use update_info::*;
+pub use mcp_server::*;

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

@@ -45,6 +45,8 @@ pub struct Project {
     pub port_mappings: Vec<PortMapping>,
     #[serde(default)]
     pub claude_instructions: Option<String>,
+    #[serde(default)]
+    pub enabled_mcp_servers: Vec<String>,
     pub created_at: String,
     pub updated_at: String,
 }
@@ -130,6 +132,7 @@ impl Project {
             custom_env_vars: Vec::new(),
             port_mappings: Vec::new(),
             claude_instructions: None,
+            enabled_mcp_servers: Vec::new(),
             created_at: now.clone(),
             updated_at: now,
         }

app/src-tauri/src/storage/mcp_store.rs

@@ -0,0 +1,106 @@
+use std::fs;
+use std::path::PathBuf;
+use std::sync::Mutex;
+
+use crate::models::McpServer;
+
+pub struct McpStore {
+    servers: Mutex<Vec<McpServer>>,
+    file_path: PathBuf,
+}
+
+impl McpStore {
+    pub fn new() -> Result<Self, String> {
+        let data_dir = dirs::data_dir()
+            .ok_or_else(|| "Could not determine data directory. Set XDG_DATA_HOME on Linux.".to_string())?
+            .join("triple-c");
+
+        fs::create_dir_all(&data_dir).ok();
+
+        let file_path = data_dir.join("mcp_servers.json");
+
+        let servers = if file_path.exists() {
+            match fs::read_to_string(&file_path) {
+                Ok(data) => {
+                    match serde_json::from_str::<Vec<McpServer>>(&data) {
+                        Ok(parsed) => parsed,
+                        Err(e) => {
+                            log::error!("Failed to parse mcp_servers.json: {}. Starting with empty list.", e);
+                            let backup = file_path.with_extension("json.bak");
+                            if let Err(be) = fs::copy(&file_path, &backup) {
+                                log::error!("Failed to back up corrupted mcp_servers.json: {}", be);
+                            }
+                            Vec::new()
+                        }
+                    }
+                }
+                Err(e) => {
+                    log::error!("Failed to read mcp_servers.json: {}", e);
+                    Vec::new()
+                }
+            }
+        } else {
+            Vec::new()
+        };
+
+        Ok(Self {
+            servers: Mutex::new(servers),
+            file_path,
+        })
+    }
+
+    fn lock(&self) -> std::sync::MutexGuard<'_, Vec<McpServer>> {
+        self.servers.lock().unwrap_or_else(|e| e.into_inner())
+    }
+
+    fn save(&self, servers: &[McpServer]) -> Result<(), String> {
+        let data = serde_json::to_string_pretty(servers)
+            .map_err(|e| format!("Failed to serialize MCP servers: {}", e))?;
+
+        // Atomic write: write to temp file, then rename
+        let tmp_path = self.file_path.with_extension("json.tmp");
+        fs::write(&tmp_path, data)
+            .map_err(|e| format!("Failed to write temp MCP servers file: {}", e))?;
+        fs::rename(&tmp_path, &self.file_path)
+            .map_err(|e| format!("Failed to rename MCP servers file: {}", e))?;
+        Ok(())
+    }
+
+    pub fn list(&self) -> Vec<McpServer> {
+        self.lock().clone()
+    }
+
+    pub fn get(&self, id: &str) -> Option<McpServer> {
+        self.lock().iter().find(|s| s.id == id).cloned()
+    }
+
+    pub fn add(&self, server: McpServer) -> Result<McpServer, String> {
+        let mut servers = self.lock();
+        let cloned = server.clone();
+        servers.push(server);
+        self.save(&servers)?;
+        Ok(cloned)
+    }
+
+    pub fn update(&self, updated: McpServer) -> Result<McpServer, String> {
+        let mut servers = self.lock();
+        if let Some(s) = servers.iter_mut().find(|s| s.id == updated.id) {
+            *s = updated.clone();
+            self.save(&servers)?;
+            Ok(updated)
+        } else {
+            Err(format!("MCP server {} not found", updated.id))
+        }
+    }
+
+    pub fn remove(&self, id: &str) -> Result<(), String> {
+        let mut servers = self.lock();
+        let initial_len = servers.len();
+        servers.retain(|s| s.id != id);
+        if servers.len() == initial_len {
+            return Err(format!("MCP server {} not found", id));
+        }
+        self.save(&servers)?;
+        Ok(())
+    }
+}

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

@@ -1,7 +1,9 @@
 pub mod projects_store;
 pub mod secure;
 pub mod settings_store;
+pub mod mcp_store;
 
 pub use projects_store::*;
 pub use secure::*;
 pub use settings_store::*;
+pub use mcp_store::*;

app/src-tauri/src/storage/projects_store.rs

@@ -70,17 +70,38 @@ impl ProjectsStore {
             (Vec::new(), false)
         };
 
+        // Reconcile stale transient statuses: on a cold app start no Docker
+        // operations can be in flight, so Starting/Stopping are always stale.
+        let mut projects = projects;
+        let mut needs_save = needs_save;
+        for p in projects.iter_mut() {
+            match p.status {
+                crate::models::ProjectStatus::Starting | crate::models::ProjectStatus::Stopping => {
+                    log::warn!(
+                        "Reconciling stale '{}' status for project '{}' ({}) → Stopped",
+                        serde_json::to_string(&p.status).unwrap_or_default().trim_matches('"'),
+                        p.name,
+                        p.id
+                    );
+                    p.status = crate::models::ProjectStatus::Stopped;
+                    p.updated_at = chrono::Utc::now().to_rfc3339();
+                    needs_save = true;
+                }
+                _ => {}
+            }
+        }
+
         let store = Self {
             projects: Mutex::new(projects),
             file_path,
         };
 
-        // Persist migrated format back to disk
+        // Persist migrated/reconciled format back to disk
         if needs_save {
-            log::info!("Migrated projects.json from single-path to multi-path format");
+            log::info!("Saving reconciled/migrated projects.json to disk");
             let projects = store.lock();
             if let Err(e) = store.save(&projects) {
-                log::error!("Failed to save migrated projects: {}", e);
+                log::error!("Failed to save projects: {}", e);
             }
         }
 

app/src/App.tsx

@@ -7,13 +7,15 @@ import TerminalView from "./components/terminal/TerminalView";
 import { useDocker } from "./hooks/useDocker";
 import { useSettings } from "./hooks/useSettings";
 import { useProjects } from "./hooks/useProjects";
+import { useMcpServers } from "./hooks/useMcpServers";
 import { useUpdates } from "./hooks/useUpdates";
 import { useAppState } from "./store/appState";
 
 export default function App() {
-  const { checkDocker, checkImage } = useDocker();
+  const { checkDocker, checkImage, startDockerPolling } = useDocker();
   const { loadSettings } = useSettings();
   const { refresh } = useProjects();
+  const { refresh: refreshMcp } = useMcpServers();
   const { loadVersion, checkForUpdates, startPeriodicCheck } = useUpdates();
   const { sessions, activeSessionId } = useAppState(
     useShallow(s => ({ sessions: s.sessions, activeSessionId: s.activeSessionId }))
@@ -22,10 +24,16 @@ export default function App() {
   // Initialize on mount
   useEffect(() => {
     loadSettings();
+    let stopPolling: (() => void) | undefined;
     checkDocker().then((available) => {
-      if (available) checkImage();
+      if (available) {
+        checkImage();
+      } else {
+        stopPolling = startDockerPolling();
+      }
     });
     refresh();
+    refreshMcp();
 
     // Update detection
     loadVersion();
@@ -34,6 +42,7 @@ export default function App() {
     return () => {
       clearTimeout(updateTimer);
       cleanup?.();
+      stopPolling?.();
     };
   }, []); // eslint-disable-line react-hooks/exhaustive-deps
 

app/src/components/layout/Sidebar.test.tsx

@@ -19,6 +19,9 @@ vi.mock("../projects/ProjectList", () => ({
 vi.mock("../settings/SettingsPanel", () => ({
   default: () => <div data-testid="settings-panel">SettingsPanel</div>,
 }));
+vi.mock("../mcp/McpPanel", () => ({
+  default: () => <div data-testid="mcp-panel">McpPanel</div>,
+}));
 
 describe("Sidebar", () => {
   beforeEach(() => {

app/src/components/layout/Sidebar.tsx

@@ -1,6 +1,7 @@
 import { useShallow } from "zustand/react/shallow";
 import { useAppState } from "../../store/appState";
 import ProjectList from "../projects/ProjectList";
+import McpPanel from "../mcp/McpPanel";
 import SettingsPanel from "../settings/SettingsPanel";
 
 export default function Sidebar() {
@@ -8,35 +9,37 @@ export default function Sidebar() {
     useShallow(s => ({ sidebarView: s.sidebarView, setSidebarView: s.setSidebarView }))
   );
 
+  const tabCls = (view: typeof sidebarView) =>
+    `flex-1 px-3 py-2 text-sm font-medium transition-colors ${
+      sidebarView === view
+        ? "text-[var(--accent)] border-b-2 border-[var(--accent)]"
+        : "text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
+    }`;
+
   return (
     <div className="flex flex-col h-full w-[25%] min-w-56 max-w-80 bg-[var(--bg-secondary)] border border-[var(--border-color)] rounded-lg overflow-hidden">
       {/* Nav tabs */}
       <div className="flex border-b border-[var(--border-color)]">
-        <button
-          onClick={() => setSidebarView("projects")}
-          className={`flex-1 px-3 py-2 text-sm font-medium transition-colors ${
-            sidebarView === "projects"
-              ? "text-[var(--accent)] border-b-2 border-[var(--accent)]"
-              : "text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
-          }`}
-        >
+        <button onClick={() => setSidebarView("projects")} className={tabCls("projects")}>
           Projects
         </button>
-        <button
-          onClick={() => setSidebarView("settings")}
-          className={`flex-1 px-3 py-2 text-sm font-medium transition-colors ${
-            sidebarView === "settings"
-              ? "text-[var(--accent)] border-b-2 border-[var(--accent)]"
-              : "text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
-          }`}
-        >
+        <button onClick={() => setSidebarView("mcp")} className={tabCls("mcp")}>
+          MCP
+        </button>
+        <button onClick={() => setSidebarView("settings")} className={tabCls("settings")}>
           Settings
         </button>
       </div>
 
       {/* Content */}
       <div className="flex-1 overflow-y-auto overflow-x-hidden p-1 min-w-0">
-        {sidebarView === "projects" ? <ProjectList /> : <SettingsPanel />}
+        {sidebarView === "projects" ? (
+          <ProjectList />
+        ) : sidebarView === "mcp" ? (
+          <McpPanel />
+        ) : (
+          <SettingsPanel />
+        )}
       </div>
     </div>
   );

app/src/components/mcp/McpPanel.tsx

@@ -0,0 +1,76 @@
+import { useState, useEffect } from "react";
+import { useMcpServers } from "../../hooks/useMcpServers";
+import McpServerCard from "./McpServerCard";
+
+export default function McpPanel() {
+  const { mcpServers, refresh, add, update, remove } = useMcpServers();
+  const [newName, setNewName] = useState("");
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    refresh();
+  }, []); // eslint-disable-line react-hooks/exhaustive-deps
+
+  const handleAdd = async () => {
+    const name = newName.trim();
+    if (!name) return;
+    setError(null);
+    try {
+      await add(name);
+      setNewName("");
+    } catch (e) {
+      setError(String(e));
+    }
+  };
+
+  return (
+    <div className="space-y-3 p-2">
+      <div>
+        <h2 className="text-sm font-semibold text-[var(--text-primary)]">MCP Servers</h2>
+        <p className="text-xs text-[var(--text-secondary)] mt-0.5">
+          Define MCP servers globally, then enable them per-project.
+        </p>
+      </div>
+
+      {/* Add new server */}
+      <div className="flex gap-1">
+        <input
+          value={newName}
+          onChange={(e) => setNewName(e.target.value)}
+          onKeyDown={(e) => { if (e.key === "Enter") handleAdd(); }}
+          placeholder="Server name..."
+          className="flex-1 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)]"
+        />
+        <button
+          onClick={handleAdd}
+          disabled={!newName.trim()}
+          className="px-3 py-1 text-xs bg-[var(--accent)] text-white rounded hover:bg-[var(--accent-hover)] disabled:opacity-50 transition-colors"
+        >
+          Add
+        </button>
+      </div>
+
+      {error && (
+        <div className="text-xs text-[var(--error)]">{error}</div>
+      )}
+
+      {/* Server list */}
+      <div className="space-y-2">
+        {mcpServers.length === 0 ? (
+          <p className="text-xs text-[var(--text-secondary)] italic">
+            No MCP servers configured.
+          </p>
+        ) : (
+          mcpServers.map((server) => (
+            <McpServerCard
+              key={server.id}
+              server={server}
+              onUpdate={update}
+              onRemove={remove}
+            />
+          ))
+        )}
+      </div>
+    </div>
+  );
+}

app/src/components/mcp/McpServerCard.tsx

@@ -0,0 +1,262 @@
+import { useState, useEffect } from "react";
+import type { McpServer, McpTransportType } from "../../lib/types";
+
+interface Props {
+  server: McpServer;
+  onUpdate: (server: McpServer) => Promise<McpServer | void>;
+  onRemove: (id: string) => Promise<void>;
+}
+
+export default function McpServerCard({ server, onUpdate, onRemove }: Props) {
+  const [expanded, setExpanded] = useState(false);
+  const [name, setName] = useState(server.name);
+  const [transportType, setTransportType] = useState<McpTransportType>(server.transport_type);
+  const [command, setCommand] = useState(server.command ?? "");
+  const [args, setArgs] = useState(server.args.join(" "));
+  const [envPairs, setEnvPairs] = useState<[string, string][]>(Object.entries(server.env));
+  const [url, setUrl] = useState(server.url ?? "");
+  const [headerPairs, setHeaderPairs] = useState<[string, string][]>(Object.entries(server.headers));
+
+  useEffect(() => {
+    setName(server.name);
+    setTransportType(server.transport_type);
+    setCommand(server.command ?? "");
+    setArgs(server.args.join(" "));
+    setEnvPairs(Object.entries(server.env));
+    setUrl(server.url ?? "");
+    setHeaderPairs(Object.entries(server.headers));
+  }, [server]);
+
+  const saveServer = async (patch: Partial<McpServer>) => {
+    try {
+      await onUpdate({ ...server, ...patch });
+    } catch (err) {
+      console.error("Failed to update MCP server:", err);
+    }
+  };
+
+  const handleNameBlur = () => {
+    if (name !== server.name) saveServer({ name });
+  };
+
+  const handleTransportChange = (t: McpTransportType) => {
+    setTransportType(t);
+    saveServer({ transport_type: t });
+  };
+
+  const handleCommandBlur = () => {
+    saveServer({ command: command || null });
+  };
+
+  const handleArgsBlur = () => {
+    const parsed = args.trim() ? args.trim().split(/\s+/) : [];
+    saveServer({ args: parsed });
+  };
+
+  const handleUrlBlur = () => {
+    saveServer({ url: url || null });
+  };
+
+  const saveEnv = (pairs: [string, string][]) => {
+    const env: Record<string, string> = {};
+    for (const [k, v] of pairs) {
+      if (k.trim()) env[k.trim()] = v;
+    }
+    saveServer({ env });
+  };
+
+  const saveHeaders = (pairs: [string, string][]) => {
+    const headers: Record<string, string> = {};
+    for (const [k, v] of pairs) {
+      if (k.trim()) headers[k.trim()] = v;
+    }
+    saveServer({ headers });
+  };
+
+  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)]";
+
+  const transportBadge = {
+    stdio: "Stdio",
+    http: "HTTP",
+    sse: "SSE",
+  }[transportType];
+
+  return (
+    <div className="border border-[var(--border-color)] rounded bg-[var(--bg-primary)]">
+      {/* Header */}
+      <div className="flex items-center gap-2 px-3 py-2">
+        <button
+          onClick={() => setExpanded(!expanded)}
+          className="flex-1 flex items-center gap-2 text-left min-w-0"
+        >
+          <span className="text-xs text-[var(--text-secondary)]">{expanded ? "\u25BC" : "\u25B6"}</span>
+          <span className="text-sm font-medium truncate">{server.name}</span>
+          <span className="text-xs px-1.5 py-0.5 rounded bg-[var(--bg-secondary)] text-[var(--text-secondary)]">
+            {transportBadge}
+          </span>
+        </button>
+        <button
+          onClick={() => { if (confirm(`Remove MCP server "${server.name}"?`)) onRemove(server.id); }}
+          className="text-xs px-2 py-0.5 text-[var(--error)] hover:bg-[var(--bg-secondary)] rounded transition-colors"
+        >
+          Remove
+        </button>
+      </div>
+
+      {/* Expanded config */}
+      {expanded && (
+        <div className="px-3 pb-3 space-y-2 border-t border-[var(--border-color)] pt-2">
+          {/* Name */}
+          <div>
+            <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Name</label>
+            <input
+              value={name}
+              onChange={(e) => setName(e.target.value)}
+              onBlur={handleNameBlur}
+              className={inputCls}
+            />
+          </div>
+
+          {/* Transport type */}
+          <div>
+            <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Transport</label>
+            <div className="flex items-center gap-1">
+              {(["stdio", "http", "sse"] as McpTransportType[]).map((t) => (
+                <button
+                  key={t}
+                  onClick={() => handleTransportChange(t)}
+                  className={`px-2 py-0.5 text-xs rounded transition-colors ${
+                    transportType === t
+                      ? "bg-[var(--accent)] text-white"
+                      : "text-[var(--text-secondary)] hover:text-[var(--text-primary)] hover:bg-[var(--bg-secondary)]"
+                  }`}
+                >
+                  {t === "stdio" ? "Stdio" : t === "http" ? "HTTP" : "SSE"}
+                </button>
+              ))}
+            </div>
+          </div>
+
+          {/* Stdio fields */}
+          {transportType === "stdio" && (
+            <>
+              <div>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Command</label>
+                <input
+                  value={command}
+                  onChange={(e) => setCommand(e.target.value)}
+                  onBlur={handleCommandBlur}
+                  placeholder="npx"
+                  className={inputCls}
+                />
+              </div>
+              <div>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">Arguments (space-separated)</label>
+                <input
+                  value={args}
+                  onChange={(e) => setArgs(e.target.value)}
+                  onBlur={handleArgsBlur}
+                  placeholder="-y @modelcontextprotocol/server-filesystem /path"
+                  className={inputCls}
+                />
+              </div>
+              <KeyValueEditor
+                label="Environment Variables"
+                pairs={envPairs}
+                onChange={(pairs) => { setEnvPairs(pairs); }}
+                onSave={saveEnv}
+              />
+            </>
+          )}
+
+          {/* HTTP/SSE fields */}
+          {(transportType === "http" || transportType === "sse") && (
+            <>
+              <div>
+                <label className="block text-xs text-[var(--text-secondary)] mb-0.5">URL</label>
+                <input
+                  value={url}
+                  onChange={(e) => setUrl(e.target.value)}
+                  onBlur={handleUrlBlur}
+                  placeholder="http://localhost:3000/mcp"
+                  className={inputCls}
+                />
+              </div>
+              <KeyValueEditor
+                label="Headers"
+                pairs={headerPairs}
+                onChange={(pairs) => { setHeaderPairs(pairs); }}
+                onSave={saveHeaders}
+              />
+            </>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}
+
+function KeyValueEditor({
+  label,
+  pairs,
+  onChange,
+  onSave,
+}: {
+  label: string;
+  pairs: [string, string][];
+  onChange: (pairs: [string, string][]) => void;
+  onSave: (pairs: [string, string][]) => void;
+}) {
+  const inputCls = "flex-1 min-w-0 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)]";
+
+  return (
+    <div>
+      <label className="block text-xs text-[var(--text-secondary)] mb-0.5">{label}</label>
+      {pairs.map(([key, value], i) => (
+        <div key={i} className="flex gap-1 items-center mb-1">
+          <input
+            value={key}
+            onChange={(e) => {
+              const updated = [...pairs] as [string, string][];
+              updated[i] = [e.target.value, value];
+              onChange(updated);
+            }}
+            onBlur={() => onSave(pairs)}
+            placeholder="KEY"
+            className={inputCls}
+          />
+          <span className="text-xs text-[var(--text-secondary)]">=</span>
+          <input
+            value={value}
+            onChange={(e) => {
+              const updated = [...pairs] as [string, string][];
+              updated[i] = [key, e.target.value];
+              onChange(updated);
+            }}
+            onBlur={() => onSave(pairs)}
+            placeholder="value"
+            className={inputCls}
+          />
+          <button
+            onClick={() => {
+              const updated = pairs.filter((_, j) => j !== i);
+              onChange(updated);
+              onSave(updated);
+            }}
+            className="flex-shrink-0 px-1.5 py-1 text-xs text-[var(--error)] hover:bg-[var(--bg-secondary)] rounded transition-colors"
+          >
+            x
+          </button>
+        </div>
+      ))}
+      <button
+        onClick={() => {
+          onChange([...pairs, ["", ""]]);
+        }}
+        className="text-xs text-[var(--accent)] hover:text-[var(--accent-hover)] transition-colors"
+      >
+        + Add
+      </button>
+    </div>
+  );
+}

app/src/components/projects/ContainerProgressModal.tsx

@@ -0,0 +1,109 @@
+import { useEffect, useRef, useCallback } from "react";
+
+interface Props {
+  projectName: string;
+  operation: "starting" | "stopping" | "resetting";
+  progressMsg: string | null;
+  error: string | null;
+  completed: boolean;
+  onForceStop: () => void;
+  onClose: () => void;
+}
+
+const operationLabels: Record<string, string> = {
+  starting: "Starting",
+  stopping: "Stopping",
+  resetting: "Resetting",
+};
+
+export default function ContainerProgressModal({
+  projectName,
+  operation,
+  progressMsg,
+  error,
+  completed,
+  onForceStop,
+  onClose,
+}: Props) {
+  const overlayRef = useRef<HTMLDivElement>(null);
+
+  // Auto-close on success after 800ms
+  useEffect(() => {
+    if (completed && !error) {
+      const timer = setTimeout(onClose, 800);
+      return () => clearTimeout(timer);
+    }
+  }, [completed, error, onClose]);
+
+  // Escape to close (only when completed or error)
+  useEffect(() => {
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === "Escape" && (completed || error)) onClose();
+    };
+    document.addEventListener("keydown", handleKeyDown);
+    return () => document.removeEventListener("keydown", handleKeyDown);
+  }, [completed, error, onClose]);
+
+  const handleOverlayClick = useCallback(
+    (e: React.MouseEvent<HTMLDivElement>) => {
+      if (e.target === overlayRef.current && (completed || error)) onClose();
+    },
+    [completed, error, onClose],
+  );
+
+  const inProgress = !completed && !error;
+
+  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-80 shadow-xl text-center">
+        <h3 className="text-sm font-semibold mb-4">
+          {operationLabels[operation]} &ldquo;{projectName}&rdquo;
+        </h3>
+
+        {/* Spinner / checkmark / error icon */}
+        <div className="flex justify-center mb-3">
+          {error ? (
+            <span className="text-3xl text-[var(--error)]">✕</span>
+          ) : completed ? (
+            <span className="text-3xl text-[var(--success)]">✓</span>
+          ) : (
+            <div className="w-8 h-8 border-2 border-[var(--accent)] border-t-transparent rounded-full animate-spin" />
+          )}
+        </div>
+
+        {/* Progress message */}
+        <p className="text-xs text-[var(--text-secondary)] min-h-[1.25rem] mb-4">
+          {error
+            ? <span className="text-[var(--error)]">{error}</span>
+            : completed
+              ? "Done!"
+              : progressMsg ?? `${operationLabels[operation]}...`}
+        </p>
+
+        {/* Buttons */}
+        <div className="flex justify-center gap-2">
+          {inProgress && (
+            <button
+              onClick={(e) => { e.stopPropagation(); onForceStop(); }}
+              className="px-3 py-1.5 text-xs text-[var(--error)] border border-[var(--error)]/30 rounded hover:bg-[var(--error)]/10 transition-colors"
+            >
+              Force Stop
+            </button>
+          )}
+          {(completed || error) && (
+            <button
+              onClick={(e) => { e.stopPropagation(); onClose(); }}
+              className="px-3 py-1.5 text-xs text-[var(--text-secondary)] hover:text-[var(--text-primary)] border border-[var(--border-color)] rounded transition-colors"
+            >
+              Close
+            </button>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}

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

@@ -31,6 +31,16 @@ vi.mock("../../hooks/useTerminal", () => ({
   }),
 }));
 
+vi.mock("../../hooks/useMcpServers", () => ({
+  useMcpServers: () => ({
+    mcpServers: [],
+    refresh: vi.fn(),
+    add: vi.fn(),
+    update: vi.fn(),
+    remove: vi.fn(),
+  }),
+}));
+
 let mockSelectedProjectId: string | null = null;
 vi.mock("../../store/appState", () => ({
   useAppState: vi.fn((selector) =>
@@ -55,7 +65,9 @@ const mockProject: Project = {
   git_user_name: null,
   git_user_email: null,
   custom_env_vars: [],
+  port_mappings: [],
   claude_instructions: null,
+  enabled_mcp_servers: [],
   created_at: "2026-01-01T00:00:00Z",
   updated_at: "2026-01-01T00:00:00Z",
 };

app/src/components/projects/ProjectCard.tsx

@@ -1,12 +1,15 @@
 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 } from "../../lib/types";
 import { useProjects } from "../../hooks/useProjects";
+import { useMcpServers } from "../../hooks/useMcpServers";
 import { useTerminal } from "../../hooks/useTerminal";
 import { useAppState } from "../../store/appState";
 import EnvVarsModal from "./EnvVarsModal";
 import PortMappingsModal from "./PortMappingsModal";
 import ClaudeInstructionsModal from "./ClaudeInstructionsModal";
+import ContainerProgressModal from "./ContainerProgressModal";
 
 interface Props {
   project: Project;
@@ -16,6 +19,7 @@ export default function ProjectCard({ project }: Props) {
   const selectedProjectId = useAppState(s => s.selectedProjectId);
   const setSelectedProject = useAppState(s => s.setSelectedProject);
   const { start, stop, rebuild, remove, update } = useProjects();
+  const { mcpServers } = useMcpServers();
   const { open: openTerminal } = useTerminal();
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
@@ -23,6 +27,9 @@ export default function ProjectCard({ project }: Props) {
   const [showEnvVarsModal, setShowEnvVarsModal] = useState(false);
   const [showPortMappingsModal, setShowPortMappingsModal] = useState(false);
   const [showClaudeInstructionsModal, setShowClaudeInstructionsModal] = useState(false);
+  const [progressMsg, setProgressMsg] = useState<string | null>(null);
+  const [activeOperation, setActiveOperation] = useState<"starting" | "stopping" | "resetting" | null>(null);
+  const [operationCompleted, setOperationCompleted] = useState(false);
   const isSelected = selectedProjectId === project.id;
   const isStopped = project.status === "stopped" || project.status === "error";
 
@@ -64,9 +71,38 @@ export default function ProjectCard({ project }: Props) {
     setBedrockModelId(project.bedrock_config?.model_id ?? "");
   }, [project]);
 
+  // Listen for container progress events
+  useEffect(() => {
+    const unlisten = listen<{ project_id: string; message: string }>(
+      "container-progress",
+      (event) => {
+        if (event.payload.project_id === project.id) {
+          setProgressMsg(event.payload.message);
+        }
+      }
+    );
+    return () => { unlisten.then((f) => f()); };
+  }, [project.id]);
+
+  // Mark operation completed when status settles
+  useEffect(() => {
+    if (project.status === "running" || project.status === "stopped" || project.status === "error") {
+      if (activeOperation) {
+        setOperationCompleted(true);
+      }
+      // Clear progress if no modal is managing it
+      if (!activeOperation) {
+        setProgressMsg(null);
+      }
+    }
+  }, [project.status, activeOperation]);
+
   const handleStart = async () => {
     setLoading(true);
     setError(null);
+    setProgressMsg(null);
+    setOperationCompleted(false);
+    setActiveOperation("starting");
     try {
       await start(project.id);
     } catch (e) {
@@ -79,6 +115,9 @@ export default function ProjectCard({ project }: Props) {
   const handleStop = async () => {
     setLoading(true);
     setError(null);
+    setProgressMsg(null);
+    setOperationCompleted(false);
+    setActiveOperation("stopping");
     try {
       await stop(project.id);
     } catch (e) {
@@ -96,6 +135,21 @@ export default function ProjectCard({ project }: Props) {
     }
   };
 
+  const handleForceStop = async () => {
+    try {
+      await stop(project.id);
+    } catch (e) {
+      setError(String(e));
+    }
+  };
+
+  const closeModal = () => {
+    setActiveOperation(null);
+    setOperationCompleted(false);
+    setProgressMsg(null);
+    setError(null);
+  };
+
   const defaultBedrockConfig: BedrockConfig = {
     auth_method: "static_credentials",
     aws_region: "us-east-1",
@@ -302,6 +356,10 @@ export default function ProjectCard({ project }: Props) {
                 <ActionButton
                   onClick={async () => {
                     setLoading(true);
+                    setError(null);
+                    setProgressMsg(null);
+                    setOperationCompleted(false);
+                    setActiveOperation("resetting");
                     try { await rebuild(project.id); } catch (e) { setError(String(e)); }
                     setLoading(false);
                   }}
@@ -315,9 +373,12 @@ export default function ProjectCard({ project }: Props) {
                 <ActionButton onClick={handleOpenTerminal} disabled={loading} label="Terminal" accent />
               </>
             ) : (
-              <span className="text-xs text-[var(--text-secondary)]">
-                {project.status}...
-              </span>
+              <>
+                <span className="text-xs text-[var(--text-secondary)]">
+                  {progressMsg ?? `${project.status}...`}
+                </span>
+                <ActionButton onClick={handleStop} disabled={loading} label="Force Stop" danger />
+              </>
             )}
             <ActionButton
               onClick={(e) => { e?.stopPropagation?.(); setShowConfig(!showConfig); }}
@@ -554,6 +615,40 @@ export default function ProjectCard({ project }: Props) {
                 </button>
               </div>
 
+              {/* MCP Servers */}
+              {mcpServers.length > 0 && (
+                <div>
+                  <label className="block text-xs text-[var(--text-secondary)] mb-1">MCP Servers</label>
+                  <div className="space-y-1">
+                    {mcpServers.map((server) => {
+                      const enabled = project.enabled_mcp_servers.includes(server.id);
+                      return (
+                        <label key={server.id} className="flex items-center gap-2 cursor-pointer">
+                          <input
+                            type="checkbox"
+                            checked={enabled}
+                            disabled={!isStopped}
+                            onChange={async () => {
+                              const updated = enabled
+                                ? project.enabled_mcp_servers.filter((id) => id !== server.id)
+                                : [...project.enabled_mcp_servers, server.id];
+                              try {
+                                await update({ ...project, enabled_mcp_servers: updated });
+                              } catch (err) {
+                                console.error("Failed to update MCP servers:", err);
+                              }
+                            }}
+                            className="rounded border-[var(--border-color)] disabled:opacity-50"
+                          />
+                          <span className="text-xs text-[var(--text-primary)]">{server.name}</span>
+                          <span className="text-xs text-[var(--text-secondary)]">({server.transport_type})</span>
+                        </label>
+                      );
+                    })}
+                  </div>
+                </div>
+              )}
+
               {/* Bedrock config */}
               {project.auth_mode === "bedrock" && (() => {
                 const bc = project.bedrock_config ?? defaultBedrockConfig;
@@ -722,6 +817,18 @@ export default function ProjectCard({ project }: Props) {
           onClose={() => setShowClaudeInstructionsModal(false)}
         />
       )}
+
+      {activeOperation && (
+        <ContainerProgressModal
+          projectName={project.name}
+          operation={activeOperation}
+          progressMsg={progressMsg}
+          error={error}
+          completed={operationCompleted}
+          onForceStop={handleForceStop}
+          onClose={closeModal}
+        />
+      )}
     </div>
   );
 }

app/src/components/terminal/TerminalView.tsx

@@ -25,6 +25,7 @@ export default function TerminalView({ sessionId, active }: Props) {
 
   const [detectedUrl, setDetectedUrl] = useState<string | null>(null);
   const [imagePasteMsg, setImagePasteMsg] = useState<string | null>(null);
+  const [isAtBottom, setIsAtBottom] = useState(true);
 
   useEffect(() => {
     if (!containerRef.current) return;
@@ -86,6 +87,12 @@ export default function TerminalView({ sessionId, active }: Props) {
       sendInput(sessionId, data);
     });
 
+    // Track scroll position to show "Jump to Current" button
+    const scrollDisposable = term.onScroll(() => {
+      const buf = term.buffer.active;
+      setIsAtBottom(buf.viewportY >= buf.baseY);
+    });
+
     // 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) => {
@@ -164,6 +171,7 @@ export default function TerminalView({ sessionId, active }: Props) {
       detector.dispose();
       detectorRef.current = null;
       inputDisposable.dispose();
+      scrollDisposable.dispose();
       containerRef.current?.removeEventListener("paste", handlePaste, { capture: true });
       outputPromise.then((fn) => fn?.());
       exitPromise.then((fn) => fn?.());
@@ -231,6 +239,11 @@ export default function TerminalView({ sessionId, active }: Props) {
     }
   }, [detectedUrl]);
 
+  const handleScrollToBottom = useCallback(() => {
+    termRef.current?.scrollToBottom();
+    setIsAtBottom(true);
+  }, []);
+
   return (
     <div
       ref={terminalContainerRef}
@@ -251,6 +264,14 @@ export default function TerminalView({ sessionId, active }: Props) {
           {imagePasteMsg}
         </div>
       )}
+      {!isAtBottom && (
+        <button
+          onClick={handleScrollToBottom}
+          className="absolute bottom-4 right-4 z-50 px-3 py-1.5 rounded-md text-xs font-medium bg-[#1f2937] text-[#58a6ff] border border-[#30363d] shadow-lg hover:bg-[#2d3748] transition-colors cursor-pointer"
+        >
+          Jump to Current ↓
+        </button>
+      )}
       <div
         ref={containerRef}
         className="w-full h-full"

app/src/hooks/useDocker.ts

@@ -1,4 +1,4 @@
-import { useCallback } from "react";
+import { useCallback, useRef } from "react";
 import { useShallow } from "zustand/react/shallow";
 import { listen } from "@tauri-apps/api/event";
 import { useAppState } from "../store/appState";
@@ -59,6 +59,39 @@ export function useDocker() {
     [setImageExists],
   );
 
+  const pollingRef = useRef<ReturnType<typeof setInterval> | null>(null);
+
+  const startDockerPolling = useCallback(() => {
+    // Don't start if already polling
+    if (pollingRef.current) return () => {};
+
+    const interval = setInterval(async () => {
+      try {
+        const available = await commands.checkDocker();
+        if (available) {
+          clearInterval(interval);
+          pollingRef.current = null;
+          setDockerAvailable(true);
+          // Also check image once Docker is available
+          try {
+            const exists = await commands.checkImageExists();
+            setImageExists(exists);
+          } catch {
+            setImageExists(false);
+          }
+        }
+      } catch {
+        // Still not available, keep polling
+      }
+    }, 5000);
+
+    pollingRef.current = interval;
+    return () => {
+      clearInterval(interval);
+      pollingRef.current = null;
+    };
+  }, [setDockerAvailable, setImageExists]);
+
   const pullImage = useCallback(
     async (imageName: string, onProgress?: (msg: string) => void) => {
       const unlisten = onProgress
@@ -84,5 +117,6 @@ export function useDocker() {
     checkImage,
     buildImage,
     pullImage,
+    startDockerPolling,
   };
 }

app/src/hooks/useMcpServers.ts

@@ -0,0 +1,55 @@
+import { useCallback } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useAppState } from "../store/appState";
+import * as commands from "../lib/tauri-commands";
+import type { McpServer } from "../lib/types";
+
+export function useMcpServers() {
+  const {
+    mcpServers,
+    setMcpServers,
+    updateMcpServerInList,
+    removeMcpServerFromList,
+  } = useAppState(
+    useShallow(s => ({
+      mcpServers: s.mcpServers,
+      setMcpServers: s.setMcpServers,
+      updateMcpServerInList: s.updateMcpServerInList,
+      removeMcpServerFromList: s.removeMcpServerFromList,
+    }))
+  );
+
+  const refresh = useCallback(async () => {
+    const list = await commands.listMcpServers();
+    setMcpServers(list);
+  }, [setMcpServers]);
+
+  const add = useCallback(
+    async (name: string) => {
+      const server = await commands.addMcpServer(name);
+      const list = await commands.listMcpServers();
+      setMcpServers(list);
+      return server;
+    },
+    [setMcpServers],
+  );
+
+  const update = useCallback(
+    async (server: McpServer) => {
+      const updated = await commands.updateMcpServer(server);
+      updateMcpServerInList(updated);
+      return updated;
+    },
+    [updateMcpServerInList],
+  );
+
+  const remove = useCallback(
+    async (id: string) => {
+      await commands.removeMcpServer(id);
+      removeMcpServerFromList(id);
+    },
+    [removeMcpServerFromList],
+  );
+
+  return { mcpServers, refresh, add, update, remove };
+}

app/src/hooks/useProjects.ts

@@ -50,31 +50,45 @@ export function useProjects() {
     [removeProjectFromList],
   );
 
+  const setOptimisticStatus = useCallback(
+    (id: string, status: "starting" | "stopping") => {
+      const { projects } = useAppState.getState();
+      const project = projects.find((p) => p.id === id);
+      if (project) {
+        updateProjectInList({ ...project, status });
+      }
+    },
+    [updateProjectInList],
+  );
+
   const start = useCallback(
     async (id: string) => {
+      setOptimisticStatus(id, "starting");
       const updated = await commands.startProjectContainer(id);
       updateProjectInList(updated);
       return updated;
     },
-    [updateProjectInList],
+    [updateProjectInList, setOptimisticStatus],
   );
 
   const stop = useCallback(
     async (id: string) => {
+      setOptimisticStatus(id, "stopping");
       await commands.stopProjectContainer(id);
       const list = await commands.listProjects();
       setProjects(list);
     },
-    [setProjects],
+    [setProjects, setOptimisticStatus],
   );
 
   const rebuild = useCallback(
     async (id: string) => {
+      setOptimisticStatus(id, "starting");
       const updated = await commands.rebuildProjectContainer(id);
       updateProjectInList(updated);
       return updated;
     },
-    [updateProjectInList],
+    [updateProjectInList, setOptimisticStatus],
   );
 
   const update = useCallback(

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 } from "./types";
+import type { Project, ProjectPath, ContainerInfo, SiblingContainer, AppSettings, UpdateInfo, McpServer } from "./types";
 
 // Docker
 export const checkDocker = () => invoke<boolean>("check_docker");
@@ -50,6 +50,15 @@ export const closeTerminalSession = (sessionId: string) =>
 export const pasteImageToTerminal = (sessionId: string, imageData: number[]) =>
   invoke<string>("paste_image_to_terminal", { sessionId, imageData });
 
+// MCP Servers
+export const listMcpServers = () => invoke<McpServer[]>("list_mcp_servers");
+export const addMcpServer = (name: string) =>
+  invoke<McpServer>("add_mcp_server", { name });
+export const updateMcpServer = (server: McpServer) =>
+  invoke<McpServer>("update_mcp_server", { server });
+export const removeMcpServer = (serverId: string) =>
+  invoke<void>("remove_mcp_server", { serverId });
+
 // Updates
 export const getAppVersion = () => invoke<string>("get_app_version");
 export const checkForUpdates = () =>

app/src/lib/types.ts

@@ -30,6 +30,7 @@ export interface Project {
   custom_env_vars: EnvVar[];
   port_mappings: PortMapping[];
   claude_instructions: string | null;
+  enabled_mcp_servers: string[];
   created_at: string;
   updated_at: string;
 }
@@ -115,3 +116,18 @@ export interface ReleaseAsset {
   browser_download_url: string;
   size: number;
 }
+
+export type McpTransportType = "stdio" | "http" | "sse";
+
+export interface McpServer {
+  id: string;
+  name: string;
+  transport_type: McpTransportType;
+  command: string | null;
+  args: string[];
+  env: Record<string, string>;
+  url: string | null;
+  headers: Record<string, string>;
+  created_at: string;
+  updated_at: string;
+}

app/src/store/appState.ts

@@ -1,5 +1,5 @@
 import { create } from "zustand";
-import type { Project, TerminalSession, AppSettings, UpdateInfo } from "../lib/types";
+import type { Project, TerminalSession, AppSettings, UpdateInfo, McpServer } from "../lib/types";
 
 interface AppState {
   // Projects
@@ -17,9 +17,15 @@ interface AppState {
   removeSession: (id: string) => void;
   setActiveSession: (id: string | null) => void;
 
+  // MCP servers
+  mcpServers: McpServer[];
+  setMcpServers: (servers: McpServer[]) => void;
+  updateMcpServerInList: (server: McpServer) => void;
+  removeMcpServerFromList: (id: string) => void;
+
   // UI state
-  sidebarView: "projects" | "settings";
-  setSidebarView: (view: "projects" | "settings") => void;
+  sidebarView: "projects" | "mcp" | "settings";
+  setSidebarView: (view: "projects" | "mcp" | "settings") => void;
   dockerAvailable: boolean | null;
   setDockerAvailable: (available: boolean | null) => void;
   imageExists: boolean | null;
@@ -75,6 +81,20 @@ export const useAppState = create<AppState>((set) => ({
     }),
   setActiveSession: (id) => set({ activeSessionId: id }),
 
+  // MCP servers
+  mcpServers: [],
+  setMcpServers: (servers) => set({ mcpServers: servers }),
+  updateMcpServerInList: (server) =>
+    set((state) => ({
+      mcpServers: state.mcpServers.map((s) =>
+        s.id === server.id ? server : s,
+      ),
+    })),
+  removeMcpServerFromList: (id) =>
+    set((state) => ({
+      mcpServers: state.mcpServers.filter((s) => s.id !== id),
+    })),
+
   // UI state
   sidebarView: "projects",
   setSidebarView: (view) => set({ sidebarView: view }),

container/entrypoint.sh

@@ -103,6 +103,27 @@ if [ -n "$CLAUDE_INSTRUCTIONS" ]; then
     unset CLAUDE_INSTRUCTIONS
 fi
 
+# ── MCP server configuration ────────────────────────────────────────────────
+# Merge MCP server config into ~/.claude.json (preserves existing keys like
+# OAuth tokens). Creates the file if it doesn't exist.
+if [ -n "$MCP_SERVERS_JSON" ]; then
+    CLAUDE_JSON="/home/claude/.claude.json"
+    if [ -f "$CLAUDE_JSON" ]; then
+        # Merge: existing config + MCP config (MCP keys override on conflict)
+        MERGED=$(jq -s '.[0] * .[1]' "$CLAUDE_JSON" <(printf '%s' "$MCP_SERVERS_JSON") 2>/dev/null)
+        if [ -n "$MERGED" ]; then
+            printf '%s\n' "$MERGED" > "$CLAUDE_JSON"
+        else
+            echo "entrypoint: warning — failed to merge MCP config into $CLAUDE_JSON"
+        fi
+    else
+        printf '%s\n' "$MCP_SERVERS_JSON" > "$CLAUDE_JSON"
+    fi
+    chown claude:claude "$CLAUDE_JSON"
+    chmod 600 "$CLAUDE_JSON"
+    unset MCP_SERVERS_JSON
+fi
+
 # ── Docker socket permissions ────────────────────────────────────────────────
 if [ -S /var/run/docker.sock ]; then
     DOCKER_GID=$(stat -c '%g' /var/run/docker.sock)