feat: interactive terminal — WS-bridged docker exec PTY (#46)

GET /services/:id/terminal upgrades to a WebSocket attached to a
`docker exec` PTY in the service's running replica. JSON frames both
ways: stdin/resize out, stdout/exit/error in. Shell probe tries each
candidate (bash→sh) since `command -v` needs a shell to run; distroless
images get a clean "no shell" error instead of an OCI failure dump.

- docker.Client gains ExecAttach + ExecResize wrappers
- Frontend: xterm.js replaces the one-off console section — live PTY,
  fit-addon resizes forwarded over the socket
- CLI: `containr shell <id>` bridges the local TTY (raw mode, SIGWINCH
  resize forwarding); `containr exec` keeps the one-off command path
- Access mirrors service logs: project manage scope required

Generated with [Devin](https://devin.ai)

Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

ROADMAP2.md

@@ -307,9 +307,12 @@ and wired refs, one click or one CLI call.
   UI at `/operations` (Operate nav) with live refetch; `containr
   operations` CLI + `containr_operations_get` MCP. Remaining: agent
   commands once node fleet lands; flush/stuck-job tools.
-- [ ] **Interactive terminal** — upgrade exec to WS PTY (`xterm.js`);
+- [x] **Interactive terminal** — `GET /services/:id/terminal` upgrades
-  `nodes/:id/terminal` via agent (dflow's wetty without the extra
+  to a WebSocket bridged to a `docker exec` PTY (bash→sh fallback,
-  container).
+  `TERM=xterm-256color`, resize frames). xterm.js Console section on the
+  service page; `containr shell <id>` bridges a local TTY; distroless
+  images get a clean "no shell" error. Remaining: `nodes/:id/terminal`
+  via agent.
 - [x] **Team invites** — `POST /admin/invites` returns a one-time
   link (sha256-hashed token at rest, optional email binding, TTL);
   public `GET /auth/invites/:token` validates and

app/backend/internal/api/routes.go

@@ -388,6 +388,9 @@ func SetupRoutes(router *gin.Engine, db *database.DB, redis *database.Redis, cfg
 			authed.POST("/deployments/:id/rollback", handleRollbackDeployment)
 			authed.POST("/deployments/:id/cancel", handleCancelDeployment)
 
+			// Interactive terminal — WebSocket → docker exec pty.
+			authed.GET("/services/:id/terminal", handleServiceTerminal)
+
 			// Environment variables — secrets, owner/admin only.
 			authed.GET("/services/:id/variables", handleGetVariables)
 			authed.PUT("/services/:id/variables", handleUpdateVariables)

app/backend/internal/api/terminal.go

@@ -0,0 +1,212 @@
+package api
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"containr/internal/database"
+	"containr/internal/docker"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/gorilla/websocket"
+)
+
+// Interactive terminal: a WebSocket bridged to a `docker exec` pty in the
+// service's container. Protocol is JSON text frames both ways:
+//   client → server: {"type":"stdin","data":"..."} | {"type":"resize","cols":N,"rows":N}
+//   server → client: {"type":"stdout","data":"..."} | {"type":"exit","code":N} | {"type":"error","message":"..."}
+// Shell preference: $SHELL, then bash, then sh.
+
+type terminalFrame struct {
+	Type    string `json:"type"`
+	Data    string `json:"data,omitempty"`
+	Cols    uint   `json:"cols,omitempty"`
+	Rows    uint   `json:"rows,omitempty"`
+	Code    int    `json:"code,omitempty"`
+	Message string `json:"message,omitempty"`
+}
+
+func handleServiceTerminal(c *gin.Context) {
+	db := c.MustGet("db").(*database.DB)
+	serviceID, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_ID", "invalid service id")
+		return
+	}
+	projectID, found := serviceProjectID(db, serviceID)
+	if !found {
+		respondError(c, http.StatusNotFound, "NOT_FOUND", "service not found")
+		return
+	}
+	if _, allowed := projectManageAccess(c, db, projectID); !allowed {
+		respondError(c, http.StatusNotFound, "NOT_FOUND", "service not found")
+		return
+	}
+	dockerClient, _ := c.Get("docker_client")
+	client, ok := dockerClient.(*docker.Client)
+	if !ok || client == nil {
+		respondError(c, http.StatusServiceUnavailable, "DOCKER_UNAVAILABLE", "Docker is not configured")
+		return
+	}
+
+	ctx := c.Request.Context()
+	containers, err := client.ListContainersFiltered(ctx, filters.NewArgs(
+		filters.Arg("label", "containr.service="+serviceID.String()),
+	), false)
+	if err != nil || len(containers) == 0 {
+		respondError(c, http.StatusConflict, "NO_CONTAINER", "service has no running container")
+		return
+	}
+	// Prefer a running container. With several matches, deterministically
+	// pick the first `containr-<service>-<n>` replica by name — that is the
+	// actual workload naming; auxiliary containers get ignored.
+	target := ""
+	sort.Slice(containers, func(i, j int) bool { return containers[i].Names[0] < containers[j].Names[0] })
+	for _, ctr := range containers {
+		if ctr.State == "running" && strings.HasPrefix(ctr.Names[0], "/containr-") {
+			target = ctr.ID
+			break
+		}
+	}
+	if target == "" {
+		for _, ctr := range containers {
+			if ctr.State == "running" {
+				target = ctr.ID
+				break
+			}
+		}
+	}
+	if target == "" {
+		target = containers[0].ID
+	}
+
+	conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
+	if err != nil {
+		return
+	}
+	defer conn.Close()
+
+	send := func(f terminalFrame) bool {
+		return conn.WriteJSON(f) == nil
+	}
+
+	// Pick a shell that actually exists — distroless images may have none.
+	// `command -v` can't probe without a shell, so start each candidate and
+	// watch for the OCI "no such file" failure.
+	var stream types.HijackedResponse
+	var execID string
+	attached := false
+	for _, candidate := range []string{"/bin/bash", "/bin/sh", "sh"} {
+		exec, err := client.ExecCreate(ctx, target, docker.ExecConfig{
+			Cmd:          []string{candidate},
+			AttachStdin:  true,
+			AttachStdout: true,
+			AttachStderr: true,
+			Tty:          true,
+			Env:          []string{"TERM=xterm-256color", "COLORTERM=truecolor"},
+		})
+		if err != nil {
+			continue
+		}
+		s, err := client.ExecAttach(ctx, exec.ID)
+		if err != nil {
+			continue
+		}
+		if execStartFailed(ctx, client, exec.ID, s) {
+			s.Close()
+			continue
+		}
+		stream, execID, attached = s, exec.ID, true
+		break
+	}
+	if !attached {
+		send(terminalFrame{Type: "error", Message: "no shell available in this container image"})
+		return
+	}
+	defer stream.Close()
+
+	// The client sends a resize frame with its real size right after
+	// connecting; start at a sane default meanwhile.
+	_ = client.ExecResize(ctx, execID, 80, 24)
+
+	var wsWrite sync.Mutex
+	writeJSON := func(f terminalFrame) {
+		wsWrite.Lock()
+		defer wsWrite.Unlock()
+		_ = conn.WriteJSON(f)
+	}
+
+	// Container → client.
+	go func() {
+		buf := make([]byte, 8192)
+		for {
+			n, err := stream.Reader.Read(buf)
+			if n > 0 {
+				writeJSON(terminalFrame{Type: "stdout", Data: string(buf[:n])})
+			}
+			if err != nil {
+				if err != io.EOF {
+					log.Printf("terminal: exec stream ended: %v", err)
+				}
+				inspect, ierr := client.ExecInspect(context.Background(), execID)
+				code := 0
+				if ierr == nil {
+					code = inspect.ExitCode
+				}
+				writeJSON(terminalFrame{Type: "exit", Code: code})
+				_ = conn.WriteControl(websocket.CloseMessage,
+					websocket.FormatCloseMessage(websocket.CloseNormalClosure, "session ended"),
+					time.Now().Add(time.Second))
+				return
+			}
+		}
+	}()
+
+	// Client → container.
+	for {
+		_, raw, err := conn.ReadMessage()
+		if err != nil {
+			return
+		}
+		var f terminalFrame
+		if err := json.Unmarshal(raw, &f); err != nil {
+			continue
+		}
+		switch f.Type {
+		case "stdin":
+			if _, err := stream.Conn.Write([]byte(f.Data)); err != nil {
+				return
+			}
+		case "resize":
+			_ = client.ExecResize(ctx, execID, f.Cols, f.Rows)
+		case "ping":
+			writeJSON(terminalFrame{Type: "pong"})
+		}
+	}
+}
+
+// execStartFailed reports whether an attached exec failed to launch
+// (missing binary → non-zero exit, not running). The OCI failure takes a
+// moment to surface, so a short grace period elapses before judging.
+func execStartFailed(ctx context.Context, client *docker.Client, execID string, _ types.HijackedResponse) bool {
+	select {
+	case <-ctx.Done():
+		return true
+	case <-time.After(500 * time.Millisecond):
+	}
+	inspect, err := client.ExecInspect(ctx, execID)
+	if err != nil {
+		return false
+	}
+	return !inspect.Running && inspect.ExitCode != 0
+}

app/backend/internal/cli/commands/exec.go

@@ -0,0 +1,113 @@
+package commands
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/gorilla/websocket"
+	"github.com/spf13/cobra"
+	"golang.org/x/term"
+)
+
+// ShellCmd opens an interactive shell inside a service's running container.
+var ShellCmd = &cobra.Command{
+	Use:   "shell <service-id>",
+	Short: "Interactive shell inside the service container",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		serviceID := args[0]
+		cli, err := client()
+		if err != nil {
+			return err
+		}
+		base := strings.TrimRight(cli.BaseURL, "/")
+		wsURL := strings.Replace(base, "http", "ws", 1) + "/services/" + serviceID + "/terminal"
+
+		header := http.Header{}
+		header.Set("Authorization", "Bearer "+cli.Token)
+		conn, _, err := websocket.DefaultDialer.Dial(wsURL, header)
+		if err != nil {
+			return fmt.Errorf("terminal: %w", err)
+		}
+		defer conn.Close()
+
+		fd := int(os.Stdin.Fd())
+		raw := term.IsTerminal(fd)
+		var oldState *term.State
+		if raw {
+			oldState, err = term.MakeRaw(fd)
+			if err == nil {
+				defer term.Restore(fd, oldState)
+			}
+			if w, h, err := term.GetSize(fd); err == nil {
+				_ = conn.WriteJSON(map[string]interface{}{"type": "resize", "cols": w, "rows": h})
+			}
+			// Forward SIGWINCH resizes.
+			sigCh := make(chan os.Signal, 1)
+			signal.Notify(sigCh, syscall.SIGWINCH)
+			defer signal.Stop(sigCh)
+			go func() {
+				for range sigCh {
+					if w, h, err := term.GetSize(fd); err == nil {
+						_ = conn.WriteJSON(map[string]interface{}{"type": "resize", "cols": w, "rows": h})
+					}
+				}
+			}()
+		}
+
+		done := make(chan struct{})
+		// stdin → ws
+		go func() {
+			buf := make([]byte, 4096)
+			for {
+				n, err := os.Stdin.Read(buf)
+				if n > 0 {
+					if werr := conn.WriteJSON(map[string]interface{}{
+						"type": "stdin", "data": string(buf[:n]),
+					}); werr != nil {
+						return
+					}
+				}
+				if err != nil {
+					return
+				}
+			}
+		}()
+		// ws → stdout
+		go func() {
+			defer close(done)
+			for {
+				var frame struct {
+					Type    string `json:"type"`
+					Data    string `json:"data"`
+					Code    int    `json:"code"`
+					Message string `json:"message"`
+				}
+				if err := conn.ReadJSON(&frame); err != nil {
+					return
+				}
+				switch frame.Type {
+				case "stdout":
+					_, _ = os.Stdout.WriteString(frame.Data)
+				case "exit":
+					fmt.Fprintf(os.Stderr, "\r\n[session ended — exit %d]\r\n", frame.Code)
+					return
+				case "error":
+					fmt.Fprintf(os.Stderr, "\r\nerror: %s\r\n", frame.Message)
+					return
+				}
+			}
+		}()
+
+		select {
+		case <-done:
+		case <-time.After(24 * time.Hour):
+		}
+		return nil
+	},
+}

app/backend/internal/cli/root.go

@@ -90,6 +90,7 @@ func init() {
 	rootCmd.AddCommand(commands.WebhooksCmd)
 	rootCmd.AddCommand(commands.OperationsCmd)
 	rootCmd.AddCommand(commands.ActivityCmd)
+	rootCmd.AddCommand(commands.ShellCmd)
 	rootCmd.AddCommand(commands.BannersCmd)
 	rootCmd.AddCommand(commands.InvitesCmd)
 	rootCmd.AddCommand(commands.UpCmd)

app/backend/internal/docker/client.go

@@ -516,6 +516,21 @@ func (c *Client) ExecRun(ctx context.Context, containerID string, cmd []string)
 	return buf.String(), inspect.ExitCode, nil
 }
 
+// ExecAttach attaches to a running exec instance, returning the hijacked
+// bidirectional stream. With Tty enabled the stream carries raw pty data
+// (no stdcopy multiplexing).
+func (c *Client) ExecAttach(ctx context.Context, execID string) (types.HijackedResponse, error) {
+	return c.cli.ContainerExecAttach(ctx, execID, container.ExecAttachOptions{})
+}
+
+// ExecResize resizes the pty of a running exec instance.
+func (c *Client) ExecResize(ctx context.Context, execID string, cols, rows uint) error {
+	return c.cli.ContainerExecResize(ctx, execID, container.ResizeOptions{
+		Height: rows,
+		Width:  cols,
+	})
+}
+
 // GetImageInfo returns information about a Docker image
 func (c *Client) GetImageInfo(ctx context.Context, imageName string) (*ImageInfo, error) {
 	images, err := c.cli.ImageList(ctx, image.ListOptions{})

app/frontend/package-lock.json

@@ -33,6 +33,8 @@
         "@tailwindcss/typography": "^0.5.19",
         "@tanstack/react-query": "^5.66.0",
         "@types/dompurify": "^3.0.5",
+        "@xterm/addon-fit": "^0.11.0",
+        "@xterm/xterm": "^6.0.0",
         "@xyflow/react": "^12.10.0",
         "autoprefixer": "^10.4.24",
         "axios": "^1.7.9",
@@ -4262,6 +4264,21 @@
         "url": "https://opencollective.com/vitest"
       }
     },
+    "node_modules/@xterm/addon-fit": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/@xterm/addon-fit/-/addon-fit-0.11.0.tgz",
+      "integrity": "sha512-jYcgT6xtVYhnhgxh3QgYDnnNMYTcf8ElbxxFzX0IZo+vabQqSPAjC3c1wJrKB5E19VwQei89QCiZZP86DCPF7g==",
+      "license": "MIT"
+    },
+    "node_modules/@xterm/xterm": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@xterm/xterm/-/xterm-6.0.0.tgz",
+      "integrity": "sha512-TQwDdQGtwwDt+2cgKDLn0IRaSxYu1tSUjgKarSDkUM0ZNiSRXFpjxEsvc/Zgc5kq5omJ+V0a8/kIM2WD3sMOYg==",
+      "license": "MIT",
+      "workspaces": [
+        "addons/*"
+      ]
+    },
     "node_modules/@xyflow/react": {
       "version": "12.10.1",
       "resolved": "https://registry.npmjs.org/@xyflow/react/-/react-12.10.1.tgz",

app/frontend/package.json

@@ -44,6 +44,8 @@
     "@tailwindcss/typography": "^0.5.19",
     "@tanstack/react-query": "^5.66.0",
     "@types/dompurify": "^3.0.5",
+    "@xterm/addon-fit": "^0.11.0",
+    "@xterm/xterm": "^6.0.0",
     "@xyflow/react": "^12.10.0",
     "autoprefixer": "^10.4.24",
     "axios": "^1.7.9",

app/frontend/src/features/service/components/ServiceTerminal.tsx

@@ -0,0 +1,107 @@
+import { useEffect, useRef, useState } from 'react';
+import { Terminal } from '@xterm/xterm';
+import { FitAddon } from '@xterm/addon-fit';
+import '@xterm/xterm/css/xterm.css';
+import { Loader2 } from 'lucide-react';
+import { getApiBaseUrl } from '@/lib/api-client';
+
+type Frame = {
+  type: 'stdin' | 'resize' | 'stdout' | 'exit' | 'error' | 'ping' | 'pong';
+  data?: string;
+  cols?: number;
+  rows?: number;
+  code?: number;
+  message?: string;
+};
+
+// Interactive shell: WebSocket → docker exec pty in the service container.
+export function ServiceTerminal({ serviceId }: { serviceId: string }) {
+  const hostRef = useRef<HTMLDivElement>(null);
+  const [status, setStatus] = useState<'connecting' | 'live' | 'ended' | 'error'>('connecting');
+
+  useEffect(() => {
+    if (!hostRef.current) return;
+
+    const term = new Terminal({
+      fontFamily: 'var(--font-mono, ui-monospace, monospace)',
+      fontSize: 13,
+      cursorBlink: true,
+      convertEol: false,
+      theme: {
+        background: '#0a0a0c',
+        foreground: '#d4d4d8',
+        cursor: '#a1a1aa',
+        selectionBackground: '#3f3f46',
+      },
+    });
+    const fit = new FitAddon();
+    term.loadAddon(fit);
+    term.open(hostRef.current);
+    fit.fit();
+
+    const wsUrl = getApiBaseUrl().replace(/^http/, 'ws');
+    const ws = new WebSocket(`${wsUrl}/services/${serviceId}/terminal`);
+
+    ws.onopen = () => {
+      setStatus('live');
+      const { cols, rows } = term;
+      const frame: Frame = { type: 'resize', cols, rows };
+      ws.send(JSON.stringify(frame));
+    };
+    ws.onmessage = (ev) => {
+      let f: Frame;
+      try {
+        f = JSON.parse(ev.data);
+      } catch {
+        return;
+      }
+      if (f.type === 'stdout' && f.data) term.write(f.data);
+      else if (f.type === 'exit') {
+        setStatus('ended');
+        term.write(`\r\n\x1b[90m[session ended — exit ${f.code ?? 0}]\x1b[0m\r\n`);
+      } else if (f.type === 'error') {
+        setStatus('error');
+        term.write(`\r\n\x1b[31m${f.message ?? 'terminal error'}\x1b[0m\r\n`);
+      }
+    };
+    ws.onerror = () => setStatus((s) => (s === 'live' ? s : 'error'));
+    ws.onclose = () => setStatus((s) => (s === 'error' ? s : 'ended'));
+
+    const dataSub = term.onData((data) => {
+      if (ws.readyState === WebSocket.OPEN) {
+        ws.send(JSON.stringify({ type: 'stdin', data } satisfies Frame));
+      }
+    });
+
+    const observer = new ResizeObserver(() => {
+      fit.fit();
+      if (ws.readyState === WebSocket.OPEN) {
+        const { cols, rows } = term;
+        ws.send(JSON.stringify({ type: 'resize', cols, rows } satisfies Frame));
+      }
+    });
+    observer.observe(hostRef.current);
+
+    return () => {
+      observer.disconnect();
+      dataSub.dispose();
+      ws.close();
+      term.dispose();
+    };
+  }, [serviceId]);
+
+  return (
+    <div className="relative">
+      {status === 'connecting' && (
+        <div className="absolute inset-0 z-10 flex items-center justify-center bg-[#0a0a0c]/80 rounded-[var(--radius-md)]">
+          <Loader2 size={18} className="animate-spin text-[var(--accent-primary)]" />
+        </div>
+      )}
+      <div
+        ref={hostRef}
+        className="rounded-[var(--radius-md)] border border-[var(--border-subtle)] overflow-hidden p-2"
+        style={{ background: '#0a0a0c', height: 420 }}
+      />
+    </div>
+  );
+}

app/frontend/src/features/service/pages/ServiceDetailPage.tsx

@@ -26,7 +26,6 @@ import {
   deleteScalingPolicy,
   getServiceScalingState,
   manualScaleService,
-  execInService,
   rollbackDeployment,
   cancelDeployment,
   updateServiceVariables,
@@ -59,6 +58,7 @@ import { getCurrentUserProfile } from '@/lib/api-client';
 import { parseDotenv, validateVariableRows, type VariableDraft } from '../variable-utils';
 import { formatBytes, formatDate, formatRelative, seededMetric } from '@/lib/time';
 import { EnhancedMetricCard, LineAreaChart, DonutChart } from '@/shared/components';
+import { ServiceTerminal } from '@/features/service/components/ServiceTerminal';
 import {
   Activity,
   FileText,
@@ -338,21 +338,6 @@ export function ServiceDetailPage() {
     },
   });
 
-  // --- Console ---
-  const [consoleInput, setConsoleInput] = useState('');
-  const [consoleHistory, setConsoleHistory] = useState<
-    Array<{ command: string; output: string; exitCode: number; error: string }>
-  >([]);
-  const execMutation = useMutation({
-    mutationFn: (command: string) => execInService(serviceId, command),
-    onSuccess: (result, command) => {
-      setConsoleHistory((prev) => [
-        { command, output: result.output ?? '', exitCode: result.exit_code ?? 0, error: result.error ?? '' },
-        ...prev,
-      ]);
-      setConsoleInput('');
-    },
-  });
   const triggerCronMutation = useMutation({
     mutationFn: (id: string) => triggerCronJob(id),
     onSuccess: () => {
@@ -1927,64 +1912,10 @@ export function ServiceDetailPage() {
               </div>
               <div>
                 <h2 className="text-lg font-semibold text-[var(--text-primary)]">Console</h2>
-                <p className="text-sm text-[var(--text-secondary)]">One-off commands via docker exec — 30s limit, 64KB output cap</p>
+                <p className="text-sm text-[var(--text-secondary)]">Interactive shell inside the service container</p>
               </div>
             </div>
-
+            <ServiceTerminal serviceId={serviceId} />
-            <form
-              className="flex items-center gap-2 mb-4"
-              onSubmit={(e) => {
-                e.preventDefault();
-                const cmd = consoleInput.trim();
-                if (cmd && !execMutation.isPending) execMutation.mutate(cmd);
-              }}
-            >
-              <span className="text-sm font-mono text-[var(--accent-primary)]">$</span>
-              <input
-                value={consoleInput}
-                onChange={(e) => setConsoleInput(e.target.value)}
-                placeholder="e.g. env | sort | head -20"
-                disabled={execMutation.isPending}
-                className="flex-1 px-3 py-2 rounded-[var(--radius-md)] bg-[var(--surface-muted)] border border-[var(--border-subtle)] text-sm font-mono text-[var(--text-primary)] disabled:opacity-50"
-              />
-              <button
-                type="submit"
-                disabled={execMutation.isPending || !consoleInput.trim()}
-                className="px-4 py-2 rounded-[var(--radius-md)] bg-[var(--accent-primary)] text-[var(--accent-on)] text-sm font-medium disabled:opacity-50"
-              >
-                {execMutation.isPending ? 'Running…' : 'Run'}
-              </button>
-            </form>
-
-            {execMutation.isError && (
-              <p className="mb-4 text-xs text-[var(--error)]">
-                {(execMutation.error as Error)?.message ?? 'Command failed'}
-              </p>
-            )}
-
-            {consoleHistory.length === 0 ? (
-              <p className="text-xs text-[var(--text-tertiary)]">
-                Commands run inside the service's running container as its default user. No interactive shell — stdout/stderr is captured and returned.
-              </p>
-            ) : (
-              <div className="space-y-3">
-                {consoleHistory.map((entry, i) => (
-                  <div key={i} className="rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)] p-3">
-                    <div className="flex items-center justify-between mb-1">
-                      <p className="text-xs font-mono text-[var(--text-primary)]">$ {entry.command}</p>
-                      <span className={`text-xs font-mono ${entry.exitCode === 0 && !entry.error ? 'text-[var(--success)]' : 'text-[var(--error)]'}`}>
-                        {entry.error ? 'error' : `exit ${entry.exitCode}`}
-                      </span>
-                    </div>
-                    {(entry.output || entry.error) && (
-                      <pre className="text-xs font-mono text-[var(--text-secondary)] whitespace-pre-wrap break-all max-h-64 overflow-y-auto">
-                        {entry.output}{entry.error ? `\n${entry.error}` : ''}
-                      </pre>
-                    )}
-                  </div>
-                ))}
-              </div>
-            )}
           </div>
         )}
 

app/frontend/src/generated/api-types.ts

@@ -1056,6 +1056,66 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/services/{id}/terminal": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /**
+         * Interactive terminal (WebSocket)
+         * @description Upgrades to a WebSocket bridged to a `docker exec` PTY in the service's running container (bash if present, else sh). Cookie/bearer auth as usual. Client→server JSON frames: `{"type":"stdin","data":"..."}`, `{"type":"resize","cols":N,"rows":N}`. Server→client frames: `{"type":"stdout","data":"..."}`, `{"type":"exit","code":N}`, `{"type":"error","message":"..."}`.
+         */
+        get: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path: {
+                    id: string;
+                };
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description Switching protocols — WebSocket session established */
+                101: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+                /** @description Service not found or not visible */
+                404: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+                /** @description Service has no running container */
+                409: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+                /** @description Docker unavailable */
+                503: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/internal/wake/{id}": {
         parameters: {
             query?: never;

docs/api/openapi.yaml

@@ -720,6 +720,35 @@ paths:
                     items:
                       type: string
 
+  /services/{id}/terminal:
+    get:
+      tags:
+        - Services
+      summary: Interactive terminal (WebSocket)
+      description: >-
+        Upgrades to a WebSocket bridged to a `docker exec` PTY in the
+        service's running container (bash if present, else sh).
+        Cookie/bearer auth as usual.
+        Client→server JSON frames: `{"type":"stdin","data":"..."}`,
+        `{"type":"resize","cols":N,"rows":N}`.
+        Server→client frames: `{"type":"stdout","data":"..."}`,
+        `{"type":"exit","code":N}`, `{"type":"error","message":"..."}`.
+      parameters:
+        - name: id
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        '101':
+          description: Switching protocols — WebSocket session established
+        '404':
+          description: Service not found or not visible
+        '409':
+          description: Service has no running container
+        '503':
+          description: Docker unavailable
+
   /internal/wake/{id}:
     get:
       tags:

docs/guides/CLI.md

@@ -86,6 +86,8 @@ operations                       live ops view: active deploys, queue depth,
                                24h failures, cron runs, backups
 activity                         enriched activity feed; --severity/--category/
                                --resource/--project/--limit filters
+shell <service-id>               interactive PTY shell inside the service
+                               container (bash→sh fallback; resizes follow)
 banners list|create|update|delete  announcement banners (admin);
                                active banners print on `auth status`
 invites list|create|revoke       team invite links (admin); create