feat(git): GitHub App manifest self-provisioning + app-level webhook (#44)

* feat(branding): white-label — public /branding, admin write, shell theming

app_settings branding.* keys (product name, logo/favicon URLs, accent
color, docs/support links). Public GET /branding so login and shell
theme pre-auth; admin writes via PUT /settings.

useBranding() applies document.title, accent CSS var and favicon;
BrandWordmark replaces hardcoded wordmarks; admin Platform settings
gain a Branding form. MCP containr_branding_get + settings_update.

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

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

* feat(invites): team invite links — admin create/revoke, public accept

Admins mint single-use invite links (sha256-hashed token at rest,
optional email binding, configurable TTL). Public endpoints let the
accept page validate the link and register — working even while
public signup is disabled.

- migration + sqlc queries/model for user_invites
- POST /admin/invites (returns one-time token+url), GET list, DELETE revoke
- GET /auth/invites/:token public validation, POST /auth/accept-invite
- CLI containr invites list|create|revoke; MCP invites tools
- /auth/accept-invite page (expired/used/invalid states, bound-email lock)
- Admin page Team invites section: create, copy link, revoke
- OpenAPI + generated types + CLI guide

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

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

* feat(admin): impersonate user — 15-min token, audit-logged

POST /admin/users/:id/impersonate mints a short-lived bearer token
(impersonated_by claim) for support/debugging. Admin accounts cannot
be impersonated; every mint is audit-logged with actor + target.

- CLI: containr admin impersonate <user-id> (works via CONTAINR_TOKEN)
- MCP: containr_admin_impersonate
- Admin UI: per-user Impersonate action → token modal with usage hint
- OpenAPI + generated types

Verified live: token resolves to target, admin target 403, audit row.

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

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

* feat(git): GitHub App manifest self-provisioning + app-level webhook

Admins create the instance GitHub App in-browser instead of hand-
setting GITHUB_APP_* env vars:

- POST /admin/git/github-app/manifest builds the manifest + URL;
  the frontend auto-submits it to github.com
- /git/github-app/callback page exchanges the code via
  POST /admin/git/github-app/convert; credentials persist in
  app_settings (precedence over env)
- GET /admin/git/github-app reports configured/source
- POST /api/git/github-app/webhook — single app-level push receiver,
  HMAC-verified, dispatches via extracted dispatchPushToServices
- install-url + installation-token paths resolve settings→env
- CLI: containr admin github-app status|manifest|convert; MCP tools
- Git providers UI shows "Set up GitHub App" for admins when
  unconfigured

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

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

---------

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

ROADMAP2.md

@@ -289,10 +289,12 @@ and wired refs, one click or one CLI call.
   users; admin CRUD at `/admin/banners`. `BannerBar` renders above the
   header (per-banner dismiss via localStorage); admin console manages
   them; `containr banners` CLI + `auth status` surfaces active ones.
-- [ ] **White-label** — `app_settings.branding`: product name, logos,
-  favicon, accent override, docs/support links. `GET /api/v1/branding`
-  public + cached. **Containr/Vertice remains default;** this is for
-  self-hosters who rebrand their instance.
+- [x] **White-label** — `app_settings` `branding.*` keys: product name,
+  logo/favicon URL, accent color, docs/support links. Public
+  `GET /api/v1/branding` (defaults = Containr); admin writes via
+  `PUT /settings`. `useBranding()` applies title/accent/favicon;
+  `BrandWordmark` replaces hardcoded marks; admin Platform section
+  edits all fields. MCP `containr_branding_get` + `settings_update`.
 - [x] **Operations page** — `GET /operations` aggregates active
   deployments, in-memory deploy-queue depth (`Queue.Snapshot()`),
   24h failures, cron runs and backups scoped to the caller's projects.
@@ -302,12 +304,25 @@ and wired refs, one click or one CLI call.
 - [ ] **Interactive terminal** — upgrade exec to WS PTY (`xterm.js`);
   `nodes/:id/terminal` via agent (dflow's wetty without the extra
   container).
-- [ ] **Team invites** — `POST /invites` → signed link → join flow;
-  replaces manual-only user creation.
-- [ ] **Impersonate user** — admin support tool, audit-logged.
-- [ ] **GitHub App manifest flow** — `POST /git/github-app/manifest`
-  returns manifest + redirect; instance self-provisions its App
-  (dflow pattern — removes the env-setup barrier).
+- [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
+  `POST /auth/accept-invite` registers — works while public signup is
+  closed. `/auth/accept-invite` page, admin manage/revoke UI,
+  `containr invites` CLI + MCP tools.
+- [x] **Impersonate user** — `POST /admin/users/:id/impersonate`
+  mints a 15-minute bearer token (`impersonated_by` claim),
+  audit-logged; admin accounts are not impersonatable. CLI
+  `admin impersonate`, MCP tool, admin UI token modal. Remaining:
+  in-browser session swap needs a session bridge.
+- [x] **GitHub App manifest flow** — `POST /admin/git/github-app/manifest`
+  returns manifest + submission URL; the callback page exchanges
+  `code` via `POST /admin/git/github-app/convert` and credentials
+  persist in `app_settings` (overriding `GITHUB_APP_*` env). New
+  public `POST /api/git/github-app/webhook` receives App-level push
+  events (HMAC-verified) and enqueues matching services. Settings→env
+  fallback wired into install-URL + installation-token paths.
+  `containr admin github-app` CLI + MCP + OpenAPI.
 - [ ] **fork-sync trigger** — accept repo-sync events on webhook
   receiver.
 - [ ] **Dynamic filter framework** — port dflow's `filter.utils`

app/backend/internal/api/admin.go

@@ -246,6 +246,57 @@ func handleAdminSetUserAdmin(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"message": "User updated"})
 }
 
+// POST /admin/users/:id/impersonate — mints a 15-minute bearer token acting
+// as the target user. Admin-only; admin accounts cannot be impersonated
+// (would blur audit attribution). Every use is audit-logged at mint time;
+// token carries `impersonated_by` for downstream attribution.
+func handleAdminImpersonateUser(c *gin.Context) {
+	db := c.MustGet("db").(*database.DB)
+	targetID := strings.TrimSpace(c.Param("id"))
+	if _, err := uuid.Parse(targetID); err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_ID", "invalid user id")
+		return
+	}
+
+	var email, name string
+	var isAdmin bool
+	err := db.QueryRowContext(c.Request.Context(),
+		`SELECT email, COALESCE(name, ''), is_admin FROM users WHERE id = $1`, targetID).
+		Scan(&email, &name, &isAdmin)
+	if err != nil {
+		respondError(c, http.StatusNotFound, "NOT_FOUND", "user not found")
+		return
+	}
+	if isAdmin {
+		respondError(c, http.StatusForbidden, "FORBIDDEN", "admin accounts cannot be impersonated")
+		return
+	}
+	actorID := optionalUserID(c)
+	if actorID == targetID {
+		respondError(c, http.StatusBadRequest, "VALIDATION", "cannot impersonate yourself")
+		return
+	}
+
+	expiresAt := time.Now().UTC().Add(15 * time.Minute)
+	jwtSecret := c.MustGet("jwt_secret").(string)
+	token, err := generateImpersonationJWT(targetID, email, actorID, jwtSecret, expiresAt)
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to generate token")
+		return
+	}
+
+	LogAuditWithRequest(c, "user", targetID, "impersonate", map[string]interface{}{
+		"actor_id":    actorID,
+		"target_email": email,
+		"expires_at":  expiresAt.Format(time.RFC3339),
+	})
+	c.JSON(http.StatusOK, gin.H{
+		"token":      token,
+		"expires_at": expiresAt.Format(time.RFC3339),
+		"user":       gin.H{"id": targetID, "email": email, "name": name},
+	})
+}
+
 func handleAdminSetProjectApproval(c *gin.Context) {
 	db := c.MustGet("db").(*database.DB)
 	queries := sqlcdb.New(db.DB)

app/backend/internal/api/auth.go

@@ -546,6 +546,19 @@ func generateJWT(userID, email, secret string) (string, error) {
 	return token.SignedString([]byte(secret))
 }
 
+// generateImpersonationJWT mints a short-lived token acting as `userID`,
+// tagged with the admin who minted it so downstream callers can attribute
+// actions taken while impersonating.
+func generateImpersonationJWT(userID, email, actorID, secret string, expiresAt time.Time) (string, error) {
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+		"user_id":         userID,
+		"email":           email,
+		"impersonated_by": actorID,
+		"exp":             expiresAt.Unix(),
+	})
+	return token.SignedString([]byte(secret))
+}
+
 // ValidateJWT validates a JWT token and returns the claims
 func ValidateJWT(tokenString, secret string) (jwt.MapClaims, error) {
 	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {

app/backend/internal/api/git.go

@@ -133,7 +133,9 @@ func handleGetGitProviders(c *gin.Context) {
 }
 
 func handleGetGitHubAppInstallURL(c *gin.Context) {
-	slug := strings.TrimSpace(os.Getenv("GITHUB_APP_SLUG"))
+	db, _ := c.Get("db")
+	d, _ := db.(*database.DB)
+	slug := strings.TrimSpace(settingValue(d, settingGitHubAppSlug, "GITHUB_APP_SLUG", ""))
 	if slug == "" {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "GITHUB_APP_SLUG is not configured"})
 		return
@@ -1073,8 +1075,8 @@ func fetchBitbucketRepositories(providerAPIURL, accessToken string) ([]remoteGit
 }
 
 func getGitHubAppInstallationToken(baseURL string, installationID int64) (string, error) {
-	appID := strings.TrimSpace(os.Getenv("GITHUB_APP_ID"))
-	privateKeyPEM := strings.TrimSpace(os.Getenv("GITHUB_APP_PRIVATE_KEY"))
+	appID := platformSetting(settingGitHubAppID, "GITHUB_APP_ID")
+	privateKeyPEM := platformSetting(settingGitHubAppPrivateKey, "GITHUB_APP_PRIVATE_KEY")
 	if appID == "" || privateKeyPEM == "" {
 		return "", fmt.Errorf("GITHUB_APP_ID and GITHUB_APP_PRIVATE_KEY must be configured")
 	}

app/backend/internal/api/git_receiver.go

@@ -113,6 +113,26 @@ func handleGitWebhookPush(c *gin.Context) {
 		return
 	}
 
+	engineValue, _ := c.Get("deployment_engine")
+	engine, _ := engineValue.(*deployment.DeploymentEngine)
+
+	enqueued, err := dispatchPushToServices(c, db, engine, cloneURL, fullName, branch, commit, repoUserID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to match services"})
+		return
+	}
+
+	c.JSON(http.StatusAccepted, gin.H{
+		"received":    true,
+		"branch":      branch,
+		"deployments": enqueued,
+	})
+}
+
+// dispatchPushToServices enqueues a deployment for every service tracking
+// the pushed repo+branch. Shared by the per-repo webhook receiver and the
+// GitHub App webhook endpoint.
+func dispatchPushToServices(c *gin.Context, db *database.DB, engine *deployment.DeploymentEngine, cloneURL, fullName, branch, commit, repoUserID string) (int, error) {
 	rows, err := db.Query(`
 		SELECT s.id, s.project_id, s.name, s.type, s.status, s.image, s.command,
 		       s.environment, s.git_repo, s.git_branch, s.build_path, s.cpu, s.memory,
@@ -121,8 +141,7 @@ func handleGitWebhookPush(c *gin.Context) {
 		WHERE s.git_branch = $1 AND (s.git_repo = $2 OR s.git_repo = $3)`,
 		branch, cloneURL, fullName)
 	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to match services"})
-		return
+		return 0, err
 	}
 	defer rows.Close()
 
@@ -134,15 +153,11 @@ func handleGitWebhookPush(c *gin.Context) {
 			&s.Environment, &s.GitRepo, &s.GitBranch, &s.BuildPath, &s.CPU, &s.Memory,
 			&s.CreatedAt, &s.UpdatedAt,
 		); err != nil {
-			c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to scan service"})
-			return
+			return 0, err
 		}
 		services = append(services, s)
 	}
 
-	engineValue, _ := c.Get("deployment_engine")
-	engine, _ := engineValue.(*deployment.DeploymentEngine)
-
 	enqueued := 0
 	for _, service := range services {
 		now := time.Now()
@@ -199,12 +214,7 @@ func handleGitWebhookPush(c *gin.Context) {
 		}
 		enqueued++
 	}
-
-	c.JSON(http.StatusAccepted, gin.H{
-		"received":    true,
-		"branch":      branch,
-		"deployments": enqueued,
-	})
+	return enqueued, nil
 }
 
 // verifyGitWebhookSignature checks the push signature per provider:

app/backend/internal/api/github_app.go

@@ -0,0 +1,310 @@
+package api
+
+import (
+	"crypto/hmac"
+	"crypto/rand"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+
+	"containr/internal/database"
+	"containr/internal/deployment"
+
+	"github.com/gin-gonic/gin"
+)
+
+// GitHub App self-provisioning (manifest flow): an admin POSTs the manifest
+// to github.com/settings/apps/new, GitHub redirects back with `code`, and the
+// code is exchanged at /app-manifests/{code}/conversions for real credentials
+// stored in app_settings. Values stored there take precedence over the
+// GITHUB_APP_* env vars, so the flow removes the manual env-setup barrier.
+
+const (
+	settingGitHubAppID            = "github_app.id"
+	settingGitHubAppSlug          = "github_app.slug"
+	settingGitHubAppName          = "github_app.name"
+	settingGitHubAppClientID      = "github_app.client_id"
+	settingGitHubAppClientSecret  = "github_app.client_secret"
+	settingGitHubAppPrivateKey    = "github_app.private_key"
+	settingGitHubAppWebhookSecret = "github_app.webhook_secret"
+)
+
+// platformSetting resolves a setting row first, then env, then empty.
+func platformSetting(key, envKey string) string {
+	return strings.TrimSpace(settingValue(GetAuditDB(), key, envKey, ""))
+}
+
+func githubAppConfigured(db *database.DB) bool {
+	return strings.TrimSpace(settingValue(db, settingGitHubAppID, "GITHUB_APP_ID", "")) != "" &&
+		strings.TrimSpace(settingValue(db, settingGitHubAppPrivateKey, "GITHUB_APP_PRIVATE_KEY", "")) != ""
+}
+
+// POST /admin/git/github-app/manifest — builds the GitHub App manifest the
+// browser POSTs to github.com. Response carries the manifest as a JSON string
+// (the form submits it verbatim) plus the destination URL.
+func handleAdminGitHubAppManifest(c *gin.Context) {
+	var req struct {
+		BaseURL      string `json:"base_url" binding:"required"`
+		Name         string `json:"name"`
+		Organization string `json:"organization"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_BODY", "base_url is required")
+		return
+	}
+	base := strings.TrimSuffix(strings.TrimSpace(req.BaseURL), "/")
+	if !strings.HasPrefix(base, "https://") &&
+		!strings.HasPrefix(base, "http://localhost") &&
+		!strings.HasPrefix(base, "http://127.0.0.1") {
+		respondError(c, http.StatusBadRequest, "VALIDATION", "base_url must be an https URL (localhost http allowed)")
+		return
+	}
+
+	stateBuf := make([]byte, 16)
+	if _, err := rand.Read(stateBuf); err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to generate state")
+		return
+	}
+	state := hex.EncodeToString(stateBuf)
+
+	name := strings.TrimSpace(req.Name)
+	if name == "" {
+		db, _ := c.Get("db")
+		if d, ok := db.(*database.DB); ok {
+			name = strings.TrimSpace(settingValue(d, settingBrandProductName, "BRAND_NAME", ""))
+		}
+		if name == "" {
+			name = "Containr"
+		}
+		name = fmt.Sprintf("%s-%s", name, time.Now().UTC().Format("2006-01-02"))
+	}
+
+	callbackURL := base + "/git/github-app/callback"
+	manifest, err := json.Marshal(map[string]interface{}{
+		"name":  name,
+		"url":   base,
+		"hook_attributes": map[string]interface{}{
+			"url":    base + "/api/git/github-app/webhook",
+			"active": true,
+		},
+		"redirect_url":  callbackURL,
+		"callback_urls": []string{callbackURL},
+		"public":        false,
+		"default_permissions": map[string]string{
+			"contents":      "read",
+			"metadata":      "read",
+			"pull_requests": "write",
+		},
+		"default_events": []string{"push", "pull_request"},
+	})
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to build manifest")
+		return
+	}
+
+	org := strings.TrimSpace(req.Organization)
+	createURL := fmt.Sprintf("https://github.com/settings/apps/new?state=%s", state)
+	if org != "" {
+		createURL = fmt.Sprintf("https://github.com/organizations/%s/settings/apps/new?state=%s", org, state)
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"url":      createURL,
+		"manifest": string(manifest),
+		"state":    state,
+	})
+}
+
+// POST /admin/git/github-app/convert — exchanges the `code` GitHub appends to
+// the manifest redirect for the real app credentials, then stores them.
+func handleAdminGitHubAppConvert(c *gin.Context) {
+	var req struct {
+		Code string `json:"code" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_BODY", "code is required")
+		return
+	}
+
+	apiBase := strings.TrimSuffix(strings.TrimSpace(os.Getenv("GITHUB_APP_BASE_URL")), "/")
+	if apiBase == "" {
+		apiBase = "https://api.github.com"
+	}
+	request, err := http.NewRequest(http.MethodPost,
+		fmt.Sprintf("%s/app-manifests/%s/conversions", apiBase, strings.TrimSpace(req.Code)), nil)
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to build conversion request")
+		return
+	}
+	request.Header.Set("Accept", "application/vnd.github+json")
+	request.Header.Set("X-GitHub-Api-Version", "2022-11-28")
+
+	client := &http.Client{Timeout: 15 * time.Second}
+	resp, err := client.Do(request)
+	if err != nil {
+		respondError(c, http.StatusBadGateway, "UPSTREAM", "failed to reach GitHub")
+		return
+	}
+	defer resp.Body.Close()
+	body, _ := io.ReadAll(io.LimitReader(resp.Body, 1<<20))
+	if resp.StatusCode != http.StatusCreated && resp.StatusCode != http.StatusOK {
+		respondError(c, http.StatusBadGateway, "UPSTREAM",
+			fmt.Sprintf("GitHub conversion failed (%d)", resp.StatusCode))
+		return
+	}
+
+	var app struct {
+		ID            int64  `json:"id"`
+		Slug          string `json:"slug"`
+		Name          string `json:"name"`
+		ClientID      string `json:"client_id"`
+		ClientSecret  string `json:"client_secret"`
+		PEM           string `json:"pem"`
+		WebhookSecret string `json:"webhook_secret"`
+	}
+	if err := json.Unmarshal(body, &app); err != nil || app.ID == 0 {
+		respondError(c, http.StatusBadGateway, "UPSTREAM", "invalid conversion response")
+		return
+	}
+
+	db := c.MustGet("db").(*database.DB)
+	for _, kv := range []struct {
+		key    string
+		value  string
+		secret bool
+	}{
+		{settingGitHubAppID, fmt.Sprintf("%d", app.ID), false},
+		{settingGitHubAppSlug, app.Slug, false},
+		{settingGitHubAppName, app.Name, false},
+		{settingGitHubAppClientID, app.ClientID, false},
+		{settingGitHubAppClientSecret, app.ClientSecret, true},
+		{settingGitHubAppPrivateKey, app.PEM, true},
+		{settingGitHubAppWebhookSecret, app.WebhookSecret, true},
+	} {
+		if err := setSetting(db, kv.key, kv.value, kv.secret); err != nil {
+			respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to store app credentials")
+			return
+		}
+	}
+
+	LogAuditWithRequest(c, "github_app", fmt.Sprintf("%d", app.ID), "provision",
+		map[string]interface{}{"name": app.Name, "slug": app.Slug})
+	c.JSON(http.StatusOK, gin.H{
+		"app_id": app.ID,
+		"slug":   app.Slug,
+		"name":   app.Name,
+	})
+}
+
+// GET /admin/git/github-app — provisioning status for the settings UI.
+func handleAdminGetGitHubApp(c *gin.Context) {
+	db := c.MustGet("db").(*database.DB)
+	var stored string
+	source := "none"
+	if err := db.QueryRow(`SELECT value FROM app_settings WHERE key = $1`, settingGitHubAppID).Scan(&stored); err == nil && strings.TrimSpace(stored) != "" {
+		source = "settings"
+	} else if strings.TrimSpace(os.Getenv("GITHUB_APP_ID")) != "" {
+		source = "env"
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"configured": githubAppConfigured(db),
+		"source":     source,
+		"app_id":     settingValue(db, settingGitHubAppID, "GITHUB_APP_ID", ""),
+		"slug":       settingValue(db, settingGitHubAppSlug, "GITHUB_APP_SLUG", ""),
+		"name":       settingValue(db, settingGitHubAppName, "", ""),
+	})
+}
+
+// POST /api/git/github-app/webhook — the single App-level webhook all
+// installed repos deliver to. Verified against the provisioned webhook
+// secret, then dispatched to matching services.
+func handleGitHubAppWebhook(c *gin.Context) {
+	dbValue, exists := c.Get("db")
+	if !exists {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Database connection not available"})
+		return
+	}
+	db := dbValue.(*database.DB)
+
+	secret := strings.TrimSpace(settingValue(db, settingGitHubAppWebhookSecret, "GITHUB_APP_WEBHOOK_SECRET", ""))
+	if secret == "" {
+		c.JSON(http.StatusServiceUnavailable, gin.H{"error": "GitHub App webhook not configured"})
+		return
+	}
+
+	body, err := io.ReadAll(io.LimitReader(c.Request.Body, 4<<20))
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Failed to read payload"})
+		return
+	}
+
+	mac := hmac.New(sha256.New, []byte(secret))
+	mac.Write(body)
+	expected := mac.Sum(nil)
+	sig := strings.TrimPrefix(c.GetHeader("X-Hub-Signature-256"), "sha256=")
+	decoded, err := hex.DecodeString(sig)
+	if err != nil || len(decoded) == 0 || subtle.ConstantTimeCompare(decoded, expected) != 1 {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid signature"})
+		return
+	}
+
+	event := c.GetHeader("X-GitHub-Event")
+	if event != "push" {
+		c.JSON(http.StatusAccepted, gin.H{"received": true, "ignored": "event " + event})
+		return
+	}
+
+	var payload struct {
+		Ref        string `json:"ref"`
+		After      string `json:"after"`
+		Repository struct {
+			FullName string `json:"full_name"`
+			CloneURL string `json:"clone_url"`
+		} `json:"repository"`
+		HeadCommit struct {
+			ID string `json:"id"`
+		} `json:"head_commit"`
+	}
+	if err := json.Unmarshal(body, &payload); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid payload"})
+		return
+	}
+	if !strings.HasPrefix(payload.Ref, "refs/heads/") {
+		c.JSON(http.StatusAccepted, gin.H{"received": true, "ignored": "not a branch push"})
+		return
+	}
+	branch := strings.TrimPrefix(payload.Ref, "refs/heads/")
+	commit := payload.HeadCommit.ID
+	if commit == "" {
+		commit = payload.After
+	}
+
+	cloneURL := payload.Repository.CloneURL
+	fullName := payload.Repository.FullName
+	if cloneURL == "" {
+		cloneURL = fmt.Sprintf("https://github.com/%s.git", fullName)
+	}
+
+	// Services tracking an App-connected repo store either the clone URL or
+	// owner/name — match both like the per-repo receiver does.
+	engineValue, _ := c.Get("deployment_engine")
+	engine, _ := engineValue.(*deployment.DeploymentEngine)
+
+	enqueued, err := dispatchPushToServices(c, db, engine, cloneURL, fullName, branch, commit, "")
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to match services"})
+		return
+	}
+	c.JSON(http.StatusAccepted, gin.H{
+		"received":    true,
+		"branch":      branch,
+		"deployments": enqueued,
+	})
+}

app/backend/internal/api/invites.go

@@ -0,0 +1,245 @@
+package api
+
+import (
+	"crypto/rand"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"errors"
+	"net/http"
+	"strings"
+	"time"
+
+	"containr/internal/database"
+	"containr/internal/database/sqlcdb"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"golang.org/x/crypto/bcrypt"
+)
+
+// Team invites: an admin creates a single-use link; the invitee registers
+// through it even while public signup is closed. Tokens are random 32-byte
+// values shared once — only their sha256 hash is stored.
+
+type inviteJSON struct {
+	ID        string     `json:"id"`
+	Email     *string    `json:"email,omitempty"`
+	ExpiresAt time.Time  `json:"expires_at"`
+	UsedAt    *time.Time `json:"used_at,omitempty"`
+	CreatedAt *time.Time `json:"created_at,omitempty"`
+}
+
+func toInviteJSON(i sqlcdb.UserInvite) inviteJSON {
+	out := inviteJSON{ID: i.ID.String(), ExpiresAt: i.ExpiresAt}
+	if i.Email.Valid && i.Email.String != "" {
+		out.Email = &i.Email.String
+	}
+	if i.UsedAt.Valid {
+		out.UsedAt = &i.UsedAt.Time
+	}
+	if i.CreatedAt.Valid {
+		out.CreatedAt = &i.CreatedAt.Time
+	}
+	return out
+}
+
+func inviteTokenHash(token string) string {
+	sum := sha256.Sum256([]byte(token))
+	return hex.EncodeToString(sum[:])
+}
+
+func generateInviteToken() (string, error) {
+	buf := make([]byte, 32)
+	if _, err := rand.Read(buf); err != nil {
+		return "", err
+	}
+	return hex.EncodeToString(buf), nil
+}
+
+// POST /admin/invites — {email?, expires_in_hours?} → {invite, token, url}
+func handleAdminCreateInvite(c *gin.Context) {
+	var req struct {
+		Email          string `json:"email"`
+		ExpiresInHours *int   `json:"expires_in_hours"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_BODY", "invalid request body")
+		return
+	}
+	ttl := 24 * 7
+	if req.ExpiresInHours != nil {
+		if *req.ExpiresInHours < 1 || *req.ExpiresInHours > 24*90 {
+			respondError(c, http.StatusBadRequest, "VALIDATION", "expires_in_hours must be 1–2160")
+			return
+		}
+		ttl = *req.ExpiresInHours
+	}
+	token, err := generateInviteToken()
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to generate token")
+		return
+	}
+	userID, _ := requireAuthenticatedUserUUID(c)
+	params := sqlcdb.CreateUserInviteParams{
+		TokenHash: inviteTokenHash(token),
+		CreatedBy: uuid.NullUUID{UUID: userID, Valid: true},
+		ExpiresAt: time.Now().UTC().Add(time.Duration(ttl) * time.Hour),
+	}
+	if email := strings.ToLower(strings.TrimSpace(req.Email)); email != "" {
+		params.Email = sql.NullString{String: email, Valid: true}
+	}
+	db := c.MustGet("db").(*database.DB)
+	invite, err := sqlcdb.New(db.DB).CreateUserInvite(c.Request.Context(), params)
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to create invite")
+		return
+	}
+	c.JSON(http.StatusCreated, gin.H{
+		"invite": toInviteJSON(invite),
+		"token":  token,
+		"url":    "/auth/accept-invite?token=" + token,
+	})
+}
+
+// GET /admin/invites
+func handleAdminListInvites(c *gin.Context) {
+	db := c.MustGet("db").(*database.DB)
+	invites, err := sqlcdb.New(db.DB).ListUserInvites(c.Request.Context())
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to list invites")
+		return
+	}
+	out := make([]inviteJSON, 0, len(invites))
+	for _, i := range invites {
+		out = append(out, toInviteJSON(i))
+	}
+	c.JSON(http.StatusOK, gin.H{"invites": out})
+}
+
+// DELETE /admin/invites/:id — revoke an unused invite.
+func handleAdminDeleteInvite(c *gin.Context) {
+	id, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_ID", "invalid invite id")
+		return
+	}
+	db := c.MustGet("db").(*database.DB)
+	if err := sqlcdb.New(db.DB).DeleteUserInvite(c.Request.Context(), id); err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to delete invite")
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
+// GET /auth/invites/:token — public. Lets the accept page validate the link
+// and pre-fill a bound email before the user commits to registering.
+func handleGetInvite(c *gin.Context) {
+	db := c.MustGet("db").(*database.DB)
+	invite, err := sqlcdb.New(db.DB).GetUserInviteByTokenHash(c.Request.Context(), inviteTokenHash(c.Param("token")))
+	if err != nil {
+		respondError(c, http.StatusNotFound, "NOT_FOUND", "invite not found")
+		return
+	}
+	expired := time.Now().After(invite.ExpiresAt)
+	var email *string
+	if invite.Email.Valid && invite.Email.String != "" {
+		email = &invite.Email.String
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"valid":      !invite.UsedAt.Valid && !expired,
+		"used":       invite.UsedAt.Valid,
+		"expired":    expired,
+		"email":      email,
+		"expires_at": invite.ExpiresAt,
+	})
+}
+
+// POST /auth/accept-invite — {token, name, email, password}
+func handleAcceptInvite(c *gin.Context) {
+	var req struct {
+		Token    string `json:"token" binding:"required"`
+		Name     string `json:"name" binding:"required"`
+		Email    string `json:"email" binding:"required"`
+		Password string `json:"password" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		respondError(c, http.StatusBadRequest, "INVALID_BODY", "token, name, email and password are required")
+		return
+	}
+	if len(req.Password) < 8 {
+		respondError(c, http.StatusBadRequest, "VALIDATION", "password must be at least 8 characters")
+		return
+	}
+	req.Email = strings.ToLower(strings.TrimSpace(req.Email))
+
+	db := c.MustGet("db").(*database.DB)
+	q := sqlcdb.New(db.DB)
+	invite, err := q.GetUserInviteByTokenHash(c.Request.Context(), inviteTokenHash(req.Token))
+	if err != nil {
+		respondError(c, http.StatusNotFound, "NOT_FOUND", "invite not found")
+		return
+	}
+	if invite.UsedAt.Valid {
+		respondError(c, http.StatusGone, "INVITE_USED", "invite already used")
+		return
+	}
+	if time.Now().After(invite.ExpiresAt) {
+		respondError(c, http.StatusGone, "INVITE_EXPIRED", "invite expired")
+		return
+	}
+	if invite.Email.Valid && invite.Email.String != "" && invite.Email.String != req.Email {
+		respondError(c, http.StatusForbidden, "INVITE_EMAIL_MISMATCH", "invite is bound to a different email")
+		return
+	}
+
+	var existing int
+	if err := db.QueryRow(`SELECT COUNT(*) FROM users WHERE email = $1`, req.Email).Scan(&existing); err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "database error")
+		return
+	}
+	if existing > 0 {
+		respondError(c, http.StatusConflict, "CONFLICT", "user already exists")
+		return
+	}
+
+	if err := createBetterAuthUser(c, strings.TrimSpace(req.Name), req.Email, req.Password); err != nil && !errors.Is(err, errBetterAuthUserExists) {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", err.Error())
+		return
+	}
+
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to hash password")
+		return
+	}
+
+	var user User
+	err = db.QueryRow(`
+		INSERT INTO users (email, password_hash, name)
+		VALUES ($1, $2, $3)
+		RETURNING id, email, name, COALESCE(avatar_url, ''), is_admin, created_at
+	`, req.Email, string(hashedPassword), strings.TrimSpace(req.Name)).
+		Scan(&user.ID, &user.Email, &user.Name, &user.AvatarURL, &user.IsAdmin, &user.CreatedAt)
+	if err != nil {
+		respondError(c, http.StatusConflict, "CONFLICT", "user already exists")
+		return
+	}
+
+	userUUID, _ := uuid.Parse(user.ID)
+	if err := q.MarkUserInviteUsed(c.Request.Context(), sqlcdb.MarkUserInviteUsedParams{
+		ID:     invite.ID,
+		UsedBy: uuid.NullUUID{UUID: userUUID, Valid: userUUID != uuid.Nil},
+	}); err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to consume invite")
+		return
+	}
+
+	jwtSecret := c.MustGet("jwt_secret").(string)
+	token, err := generateJWT(user.ID, user.Email, jwtSecret)
+	if err != nil {
+		respondError(c, http.StatusInternalServerError, "INTERNAL", "failed to generate token")
+		return
+	}
+	c.JSON(http.StatusCreated, AuthResponse{Token: token, User: user})
+}

app/backend/internal/api/routes.go

@@ -249,6 +249,10 @@ func SetupRoutes(router *gin.Engine, db *database.DB, redis *database.Redis, cfg
 	// replaces session auth. Providers POST to /api/git/webhooks/:id.
 	router.POST("/api/git/webhooks/:id", handleGitWebhookPush)
 
+	// GitHub App-level webhook: installed repos deliver to this single
+	// endpoint, verified against the provisioned webhook secret.
+	router.POST("/api/git/github-app/webhook", handleGitHubAppWebhook)
+
 	v1 := router.Group("/api/v1")
 	{
 		// Public routes (no authentication required)
@@ -258,6 +262,12 @@ func SetupRoutes(router *gin.Engine, db *database.DB, redis *database.Redis, cfg
 			public.POST("/auth/login", handleLogin)
 			public.POST("/auth/register", handleRegister)
 			public.GET("/maintenance", handleMaintenancePage)
+			public.GET("/branding", handleGetBranding)
+
+			// Invite accept flow — validates the link, then registers
+			// even while public signup is closed.
+			public.GET("/auth/invites/:token", handleGetInvite)
+			public.POST("/auth/accept-invite", handleAcceptInvite)
 
 			// Wake callback for sleep-mode placeholders. Unauthenticated but
 			// non-destructive: it only reconciles the service back to running.
@@ -471,6 +481,7 @@ func SetupRoutes(router *gin.Engine, db *database.DB, redis *database.Redis, cfg
 			admin.GET("/admin/overview", handleAdminOverview)
 			admin.GET("/admin/users", handleAdminListUsers)
 			admin.PATCH("/admin/users/:id", handleAdminSetUserAdmin)
+			admin.POST("/admin/users/:id/impersonate", handleAdminImpersonateUser)
 			admin.PATCH("/admin/projects/:id", handleAdminSetProjectApproval)
 
 			admin.POST("/users", handleCreateUser)
@@ -494,6 +505,16 @@ func SetupRoutes(router *gin.Engine, db *database.DB, redis *database.Redis, cfg
 			admin.POST("/admin/banners", handleAdminCreateBanner)
 			admin.PATCH("/admin/banners/:id", handleAdminUpdateBanner)
 			admin.DELETE("/admin/banners/:id", handleAdminDeleteBanner)
+
+			// GitHub App self-provisioning (manifest flow)
+			admin.GET("/admin/git/github-app", handleAdminGetGitHubApp)
+			admin.POST("/admin/git/github-app/manifest", handleAdminGitHubAppManifest)
+			admin.POST("/admin/git/github-app/convert", handleAdminGitHubAppConvert)
+
+			// Team invites — single-use registration links
+			admin.GET("/admin/invites", handleAdminListInvites)
+			admin.POST("/admin/invites", handleAdminCreateInvite)
+			admin.DELETE("/admin/invites/:id", handleAdminDeleteInvite)
 			admin.GET("/audit-logs", handleGetAuditLogs)
 			admin.GET("/audit-logs/:resource/:id", handleGetResourceAuditLogs)
 

app/backend/internal/api/settings.go

@@ -23,10 +23,49 @@ const (
 	settingSignupEnabled         = "signup_enabled"
 	settingCloudflareTunnelToken = "cloudflare_tunnel_token"
 
+	// White-label branding keys — unset fields fall back to Containr
+	// defaults. Self-hosters rebrand their instance via these.
+	settingBrandProductName = "branding.product_name"
+	settingBrandLogoURL     = "branding.logo_url"
+	settingBrandFaviconURL  = "branding.favicon_url"
+	settingBrandAccent      = "branding.accent_color"
+	settingBrandDocsURL     = "branding.docs_url"
+	settingBrandSupportURL  = "branding.support_url"
+
 	cloudflaredContainerName = "containr-cloudflared"
 	cloudflaredImage         = "cloudflare/cloudflared:latest"
 )
 
+// brandingConfig is the public white-label payload. Fields are always
+// populated — defaults keep the instance Containr-branded.
+type brandingConfig struct {
+	ProductName string `json:"product_name"`
+	LogoURL     string `json:"logo_url"`
+	FaviconURL  string `json:"favicon_url"`
+	AccentColor string `json:"accent_color"`
+	DocsURL     string `json:"docs_url"`
+	SupportURL  string `json:"support_url"`
+}
+
+func resolveBranding(db *database.DB) brandingConfig {
+	return brandingConfig{
+		ProductName: settingValue(db, settingBrandProductName, "BRAND_NAME", "Containr"),
+		LogoURL:     settingValue(db, settingBrandLogoURL, "BRAND_LOGO_URL", ""),
+		FaviconURL:  settingValue(db, settingBrandFaviconURL, "BRAND_FAVICON_URL", ""),
+		AccentColor: settingValue(db, settingBrandAccent, "BRAND_ACCENT_COLOR", ""),
+		DocsURL:     settingValue(db, settingBrandDocsURL, "BRAND_DOCS_URL", ""),
+		SupportURL:  settingValue(db, settingBrandSupportURL, "BRAND_SUPPORT_URL", ""),
+	}
+}
+
+// GET /branding — public so the login page and shell can brand themselves
+// before a session exists.
+func handleGetBranding(c *gin.Context) {
+	db, _ := c.Get("db")
+	database, _ := db.(*database.DB)
+	c.JSON(http.StatusOK, resolveBranding(database))
+}
+
 // settingValue resolves a setting: app_settings row first, env fallback,
 // then the caller's default.
 func settingValue(db *database.DB, key, envKey, fallback string) string {
@@ -110,6 +149,7 @@ func handleGetSettings(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{
 		"signup_enabled":    signupEnabled(db),
 		"cloudflare_tunnel": cloudflareTunnelState(c.Request.Context(), db, client),
+		"branding":          resolveBranding(db),
 	})
 }
 
@@ -122,6 +162,14 @@ func handleUpdateSettings(c *gin.Context) {
 	var req struct {
 		SignupEnabled         *bool   `json:"signup_enabled"`
 		CloudflareTunnelToken *string `json:"cloudflare_tunnel_token"`
+		Branding              *struct {
+			ProductName *string `json:"product_name"`
+			LogoURL     *string `json:"logo_url"`
+			FaviconURL  *string `json:"favicon_url"`
+			AccentColor *string `json:"accent_color"`
+			DocsURL     *string `json:"docs_url"`
+			SupportURL  *string `json:"support_url"`
+		} `json:"branding"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -158,6 +206,36 @@ func handleUpdateSettings(c *gin.Context) {
 		}
 	}
 
+	if req.Branding != nil {
+		fields := []struct {
+			key   string
+			value *string
+		}{
+			{settingBrandProductName, req.Branding.ProductName},
+			{settingBrandLogoURL, req.Branding.LogoURL},
+			{settingBrandFaviconURL, req.Branding.FaviconURL},
+			{settingBrandAccent, req.Branding.AccentColor},
+			{settingBrandDocsURL, req.Branding.DocsURL},
+			{settingBrandSupportURL, req.Branding.SupportURL},
+		}
+		for _, f := range fields {
+			if f.value == nil {
+				continue
+			}
+			v := strings.TrimSpace(*f.value)
+			var err error
+			if v == "" {
+				err = deleteSetting(db, f.key)
+			} else {
+				err = setSetting(db, f.key, v, false)
+			}
+			if err != nil {
+				c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save branding"})
+				return
+			}
+		}
+	}
+
 	handleGetSettings(c)
 }
 

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

@@ -56,6 +56,84 @@ var adminUsersCmd = &cobra.Command{
 	},
 }
 
+var adminImpersonateCmd = &cobra.Command{
+	Use:   "impersonate <user-id>",
+	Short: "Mint a 15-minute token acting as a user (audit-logged)",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		c, err := client()
+		if err != nil {
+			return err
+		}
+		data, err := c.Do("POST", "/admin/users/"+args[0]+"/impersonate", map[string]interface{}{})
+		if err != nil {
+			return err
+		}
+		PrintRaw(data)
+		fmt.Fprintln(cmd.ErrOrStderr(), "\nUse it with: CONTAINR_TOKEN=<token> containr <command>")
+		return nil
+	},
+}
+
+var adminGitHubAppCmd = &cobra.Command{
+	Use:   "github-app",
+	Short: "GitHub App self-provisioning",
+}
+
+var adminGitHubAppStatusCmd = &cobra.Command{
+	Use:   "status",
+	Short: "Show GitHub App provisioning status",
+	RunE:  simpleGet("/admin/git/github-app"),
+}
+
+var adminGitHubAppManifestCmd = &cobra.Command{
+	Use:   "manifest",
+	Short: "Build the manifest to create the instance GitHub App",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		c, err := client()
+		if err != nil {
+			return err
+		}
+		req := map[string]interface{}{"base_url": ghAppBaseURL}
+		if ghAppOrg != "" {
+			req["organization"] = ghAppOrg
+		}
+		if ghAppName != "" {
+			req["name"] = ghAppName
+		}
+		data, err := c.Do("POST", "/admin/git/github-app/manifest", req)
+		if err != nil {
+			return err
+		}
+		PrintRaw(data)
+		return nil
+	},
+}
+
+var adminGitHubAppConvertCmd = &cobra.Command{
+	Use:   "convert <code>",
+	Short: "Exchange the manifest callback code for app credentials",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		c, err := client()
+		if err != nil {
+			return err
+		}
+		data, err := c.Do("POST", "/admin/git/github-app/convert", map[string]interface{}{"code": args[0]})
+		if err != nil {
+			return err
+		}
+		PrintRaw(data)
+		return nil
+	},
+}
+
+var (
+	ghAppBaseURL string
+	ghAppOrg     string
+	ghAppName    string
+)
+
 var adminSettingsCmd = &cobra.Command{
 	Use:   "settings",
 	Short: "Show platform settings",
@@ -353,7 +431,13 @@ func init() {
 	securityScanCmd.Flags().String("type", "configuration", "dependency|configuration|comprehensive")
 	securityScanCmd.Flags().String("service", "", "limit scan to one service")
 
-	AdminCmd.AddCommand(adminOverviewCmd, adminUsersCmd, adminSettingsCmd, adminAuditCmd)
+	adminGitHubAppManifestCmd.Flags().StringVar(&ghAppBaseURL, "base-url", "", "public base URL of this instance (required)")
+	adminGitHubAppManifestCmd.Flags().StringVar(&ghAppOrg, "org", "", "create the app under this organization")
+	adminGitHubAppManifestCmd.Flags().StringVar(&ghAppName, "name", "", "app name (defaults to product name + date)")
+	adminGitHubAppManifestCmd.MarkFlagRequired("base-url")
+
+	adminGitHubAppCmd.AddCommand(adminGitHubAppStatusCmd, adminGitHubAppManifestCmd, adminGitHubAppConvertCmd)
+	AdminCmd.AddCommand(adminOverviewCmd, adminUsersCmd, adminSettingsCmd, adminAuditCmd, adminImpersonateCmd, adminGitHubAppCmd)
 	GatewayCmd.AddCommand(gatewayServicesCmd, gatewayKeysCmd, gatewayAnalyticsCmd)
 	HACmd.AddCommand(haStatusCmd, haAlertsCmd, haHealthCmd, haPoliciesCmd, haEnableCmd, haDisableCmd, haFailoverCmd)
 	ScalingCmd.AddCommand(scalingStatusCmd, scalingPoliciesCmd, scalingServicesCmd, scalingScaleCmd)

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

@@ -0,0 +1,92 @@
+package commands
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var inviteEmail string
+var inviteTTL int
+
+// InvitesCmd manages team invite links (admin).
+var InvitesCmd = &cobra.Command{
+	Use:   "invites",
+	Short: "Manage team invite links (admin)",
+}
+
+var inviteListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List invites",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		c, err := client()
+		if err != nil {
+			return err
+		}
+		data, err := c.Do("GET", "/admin/invites", nil)
+		if err != nil {
+			return err
+		}
+		items, err := unwrapList(data, "invites")
+		if err != nil {
+			return err
+		}
+		rows := make([][]string, 0, len(items))
+		for _, i := range items {
+			state := "open"
+			if _, used := i["used_at"]; used && i["used_at"] != nil {
+				state = "used"
+			}
+			rows = append(rows, []string{
+				str(i, "id"), str(i, "email"), str(i, "expires_at"), state,
+			})
+		}
+		printRows(data, []string{"ID", "EMAIL", "EXPIRES", "STATE"}, rows)
+		return nil
+	},
+}
+
+var inviteCreateCmd = &cobra.Command{
+	Use:   "create",
+	Short: "Create an invite link (--email to bind, --hours for TTL)",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		c, err := client()
+		if err != nil {
+			return err
+		}
+		req := map[string]interface{}{}
+		if cmd.Flags().Changed("email") {
+			req["email"] = inviteEmail
+		}
+		if cmd.Flags().Changed("hours") {
+			req["expires_in_hours"] = inviteTTL
+		}
+		data, err := c.Do("POST", "/admin/invites", req)
+		if err != nil {
+			return err
+		}
+		PrintRaw(data)
+		return nil
+	},
+}
+
+var inviteRevokeCmd = &cobra.Command{
+	Use:   "revoke <id>",
+	Short: "Revoke an invite",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if !Confirm("Revoke invite " + args[0] + "?") {
+			return &APIError{Message: "aborted (pass --yes to skip confirmation)", ExitCode: ExitError}
+		}
+		c, err := client()
+		if err != nil {
+			return err
+		}
+		_, err = c.Do("DELETE", "/admin/invites/"+args[0], nil)
+		return err
+	},
+}
+
+func init() {
+	inviteCreateCmd.Flags().StringVar(&inviteEmail, "email", "", "bind invite to this email")
+	inviteCreateCmd.Flags().IntVar(&inviteTTL, "hours", 168, "invite lifetime in hours (1-2160)")
+	InvitesCmd.AddCommand(inviteListCmd, inviteCreateCmd, inviteRevokeCmd)
+}

app/backend/internal/cli/root.go

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

app/backend/internal/database/sqlcdb/invites.sql.go

@@ -0,0 +1,134 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.31.1
+// source: invites.sql
+
+package sqlcdb
+
+import (
+	"context"
+	"database/sql"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+const createUserInvite = `-- name: CreateUserInvite :one
+INSERT INTO user_invites (token_hash, email, created_by, expires_at)
+VALUES ($1, $2, $3, $4)
+RETURNING user_invites.id, user_invites.token_hash, user_invites.email, user_invites.created_by, user_invites.expires_at, user_invites.used_by, user_invites.used_at, user_invites.created_at
+`
+
+type CreateUserInviteParams struct {
+	TokenHash string         `json:"token_hash"`
+	Email     sql.NullString `json:"email"`
+	CreatedBy uuid.NullUUID  `json:"created_by"`
+	ExpiresAt time.Time      `json:"expires_at"`
+}
+
+func (q *Queries) CreateUserInvite(ctx context.Context, arg CreateUserInviteParams) (UserInvite, error) {
+	row := q.db.QueryRowContext(ctx, createUserInvite,
+		arg.TokenHash,
+		arg.Email,
+		arg.CreatedBy,
+		arg.ExpiresAt,
+	)
+	var i UserInvite
+	err := row.Scan(
+		&i.ID,
+		&i.TokenHash,
+		&i.Email,
+		&i.CreatedBy,
+		&i.ExpiresAt,
+		&i.UsedBy,
+		&i.UsedAt,
+		&i.CreatedAt,
+	)
+	return i, err
+}
+
+const deleteUserInvite = `-- name: DeleteUserInvite :exec
+DELETE FROM user_invites
+WHERE id = $1
+`
+
+func (q *Queries) DeleteUserInvite(ctx context.Context, id uuid.UUID) error {
+	_, err := q.db.ExecContext(ctx, deleteUserInvite, id)
+	return err
+}
+
+const getUserInviteByTokenHash = `-- name: GetUserInviteByTokenHash :one
+SELECT user_invites.id, user_invites.token_hash, user_invites.email, user_invites.created_by, user_invites.expires_at, user_invites.used_by, user_invites.used_at, user_invites.created_at
+FROM user_invites
+WHERE token_hash = $1
+`
+
+func (q *Queries) GetUserInviteByTokenHash(ctx context.Context, tokenHash string) (UserInvite, error) {
+	row := q.db.QueryRowContext(ctx, getUserInviteByTokenHash, tokenHash)
+	var i UserInvite
+	err := row.Scan(
+		&i.ID,
+		&i.TokenHash,
+		&i.Email,
+		&i.CreatedBy,
+		&i.ExpiresAt,
+		&i.UsedBy,
+		&i.UsedAt,
+		&i.CreatedAt,
+	)
+	return i, err
+}
+
+const listUserInvites = `-- name: ListUserInvites :many
+SELECT user_invites.id, user_invites.token_hash, user_invites.email, user_invites.created_by, user_invites.expires_at, user_invites.used_by, user_invites.used_at, user_invites.created_at
+FROM user_invites
+ORDER BY created_at DESC
+`
+
+func (q *Queries) ListUserInvites(ctx context.Context) ([]UserInvite, error) {
+	rows, err := q.db.QueryContext(ctx, listUserInvites)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []UserInvite{}
+	for rows.Next() {
+		var i UserInvite
+		if err := rows.Scan(
+			&i.ID,
+			&i.TokenHash,
+			&i.Email,
+			&i.CreatedBy,
+			&i.ExpiresAt,
+			&i.UsedBy,
+			&i.UsedAt,
+			&i.CreatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const markUserInviteUsed = `-- name: MarkUserInviteUsed :exec
+UPDATE user_invites
+SET used_by = $2, used_at = now()
+WHERE id = $1 AND used_at IS NULL
+`
+
+type MarkUserInviteUsedParams struct {
+	ID     uuid.UUID     `json:"id"`
+	UsedBy uuid.NullUUID `json:"used_by"`
+}
+
+func (q *Queries) MarkUserInviteUsed(ctx context.Context, arg MarkUserInviteUsedParams) error {
+	_, err := q.db.ExecContext(ctx, markUserInviteUsed, arg.ID, arg.UsedBy)
+	return err
+}

app/backend/internal/database/sqlcdb/models.go

@@ -301,6 +301,17 @@ type ServiceTemplate struct {
 	UpdatedAt   sql.NullTime          `json:"updated_at"`
 }
 
+type UserInvite struct {
+	ID        uuid.UUID      `json:"id"`
+	TokenHash string         `json:"token_hash"`
+	Email     sql.NullString `json:"email"`
+	CreatedBy uuid.NullUUID  `json:"created_by"`
+	ExpiresAt time.Time      `json:"expires_at"`
+	UsedBy    uuid.NullUUID  `json:"used_by"`
+	UsedAt    sql.NullTime   `json:"used_at"`
+	CreatedAt sql.NullTime   `json:"created_at"`
+}
+
 type UserToken struct {
 	ID         uuid.UUID    `json:"id"`
 	UserID     uuid.UUID    `json:"user_id"`

app/backend/internal/database/sqlcdb/querier.go

@@ -31,6 +31,7 @@ type Querier interface {
 	CreateOutboundWebhook(ctx context.Context, arg CreateOutboundWebhookParams) error
 	CreateProject(ctx context.Context, arg CreateProjectParams) (Project, error)
 	CreateServiceFromTemplate(ctx context.Context, arg CreateServiceFromTemplateParams) error
+	CreateUserInvite(ctx context.Context, arg CreateUserInviteParams) (UserInvite, error)
 	CreateUserTemplate(ctx context.Context, arg CreateUserTemplateParams) error
 	CreateUserToken(ctx context.Context, arg CreateUserTokenParams) (UserToken, error)
 	CreateWebhookDelivery(ctx context.Context, arg CreateWebhookDeliveryParams) error
@@ -42,6 +43,7 @@ type Querier interface {
 	DeleteDatabaseServiceByIDAndUser(ctx context.Context, arg DeleteDatabaseServiceByIDAndUserParams) error
 	DeleteOutboundWebhookByIDAndUser(ctx context.Context, arg DeleteOutboundWebhookByIDAndUserParams) error
 	DeleteProjectByID(ctx context.Context, projectID uuid.UUID) (int64, error)
+	DeleteUserInvite(ctx context.Context, id uuid.UUID) error
 	DeleteUserTemplate(ctx context.Context, arg DeleteUserTemplateParams) (int64, error)
 	GetActiveAgentAuthTokenByHash(ctx context.Context, tokenHash string) (AgentAuthToken, error)
 	GetAgent(ctx context.Context, id string) (NodeAgent, error)
@@ -63,6 +65,7 @@ type Querier interface {
 	GetProjectOwnerID(ctx context.Context, id uuid.UUID) (uuid.UUID, error)
 	GetProjectRoleForUser(ctx context.Context, arg GetProjectRoleForUserParams) (string, error)
 	GetServiceTemplateByID(ctx context.Context, id string) (ServiceTemplate, error)
+	GetUserInviteByTokenHash(ctx context.Context, tokenHash string) (UserInvite, error)
 	GetUserTokenByHash(ctx context.Context, tokenHash string) (UserToken, error)
 	InsertAgentHeartbeat(ctx context.Context, arg InsertAgentHeartbeatParams) error
 	InsertProjectEnvironment(ctx context.Context, arg InsertProjectEnvironmentParams) error
@@ -90,10 +93,12 @@ type Querier interface {
 	ListProjectsWithStatsByUser(ctx context.Context, arg ListProjectsWithStatsByUserParams) ([]ListProjectsWithStatsByUserRow, error)
 	ListServiceTemplatesByCategoryForUser(ctx context.Context, arg ListServiceTemplatesByCategoryForUserParams) ([]ServiceTemplate, error)
 	ListServiceTemplatesForUser(ctx context.Context, ownerID uuid.NullUUID) ([]ServiceTemplate, error)
+	ListUserInvites(ctx context.Context) ([]UserInvite, error)
 	ListUserTokens(ctx context.Context, userID uuid.UUID) ([]UserToken, error)
 	ListWebhookDeliveriesByWebhook(ctx context.Context, webhookID uuid.UUID) ([]WebhookDelivery, error)
 	MarkAllNotificationsReadByUser(ctx context.Context, arg MarkAllNotificationsReadByUserParams) error
 	MarkNotificationReadByIDAndUser(ctx context.Context, arg MarkNotificationReadByIDAndUserParams) error
+	MarkUserInviteUsed(ctx context.Context, arg MarkUserInviteUsedParams) error
 	RevokeAgentAuthToken(ctx context.Context, id uuid.UUID) (AgentAuthToken, error)
 	RevokeUserToken(ctx context.Context, arg RevokeUserTokenParams) (int64, error)
 	SetDatabaseBackupRemoteKeyByID(ctx context.Context, arg SetDatabaseBackupRemoteKeyByIDParams) error

app/backend/internal/mcpserver/server.go

@@ -155,6 +155,17 @@ func init() {
 	register(spec{"containr_banners_update", "Update an announcement banner (admin). Args: id plus fields to change.", "PATCH", "/admin/banners/{id}", []string{"id"}, []string{"title", "body", "level", "active", "dismissible", "starts_at", "ends_at"}, false})
 	register(spec{"containr_banners_delete", "Delete an announcement banner (admin). Args: id. Requires confirm=true.", "DELETE", "/admin/banners/{id}", []string{"id"}, nil, true})
 
+	register(spec{"containr_branding_get", "Get instance white-label branding (product name, logo, accent, links).", "GET", "/branding", nil, nil, false})
+	register(spec{"containr_settings_update", "Update platform settings (admin). Args: signup_enabled (bool), cloudflare_tunnel_token (string, empty clears), branding (object: product_name, logo_url, favicon_url, accent_color, docs_url, support_url — empty string resets a field).", "PUT", "/settings", nil, []string{"signup_enabled", "cloudflare_tunnel_token", "branding"}, false})
+
+	register(spec{"containr_invites_list", "List team invite links (admin).", "GET", "/admin/invites", nil, nil, false})
+	register(spec{"containr_invites_create", "Create a team invite link (admin). Args: email (optional bind), expires_in_hours (default 168). Returns the one-time token + accept URL.", "POST", "/admin/invites", nil, []string{"email", "expires_in_hours"}, false})
+	register(spec{"containr_invites_revoke", "Revoke a team invite (admin). Args: id. Requires confirm=true.", "DELETE", "/admin/invites/{id}", []string{"id"}, nil, true})
+	register(spec{"containr_admin_impersonate", "Mint a 15-minute bearer token acting as a user (admin, audit-logged). Args: id (user id).", "POST", "/admin/users/{id}/impersonate", []string{"id"}, nil, false})
+	register(spec{"containr_github_app_status", "Show GitHub App provisioning status (admin).", "GET", "/admin/git/github-app", nil, nil, false})
+	register(spec{"containr_github_app_manifest", "Build a GitHub App manifest for self-provisioning (admin). Args: base_url (required, https public URL), name (optional), organization (optional).", "POST", "/admin/git/github-app/manifest", nil, []string{"base_url", "name", "organization"}, false})
+	register(spec{"containr_github_app_convert", "Exchange the GitHub manifest callback code for app credentials (admin). Args: code.", "POST", "/admin/git/github-app/convert", nil, []string{"code"}, false})
+
 	// Nodes / agent tokens (admin)
 	register(spec{"containr_nodes_list", "List node agents (admin)", "GET", "/agents", nil, nil, false})
 	register(spec{"containr_nodes_get", "Get a node agent (admin)", "GET", "/agents/{id}", []string{"id"}, nil, false})

app/backend/migrations_goose/20261105000000_user_invites.sql

@@ -0,0 +1,19 @@
+-- +goose Up
+-- Team invites: admin-generated single-use links that let a new user
+-- register even while public signup is closed. Tokens are sha256-hashed
+-- at rest like PATs.
+CREATE TABLE IF NOT EXISTS user_invites (
+    id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+    token_hash varchar(64) NOT NULL UNIQUE,
+    email varchar(255),
+    created_by uuid REFERENCES users(id) ON DELETE SET NULL,
+    expires_at timestamptz NOT NULL,
+    used_by uuid REFERENCES users(id) ON DELETE SET NULL,
+    used_at timestamptz,
+    created_at timestamptz DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_user_invites_expires ON user_invites(expires_at);
+
+-- +goose Down
+DROP TABLE IF EXISTS user_invites;

app/backend/sqlc/queries/invites.sql

@@ -0,0 +1,23 @@
+-- name: CreateUserInvite :one
+INSERT INTO user_invites (token_hash, email, created_by, expires_at)
+VALUES ($1, $2, $3, $4)
+RETURNING user_invites.*;
+
+-- name: GetUserInviteByTokenHash :one
+SELECT user_invites.*
+FROM user_invites
+WHERE token_hash = $1;
+
+-- name: ListUserInvites :many
+SELECT user_invites.*
+FROM user_invites
+ORDER BY created_at DESC;
+
+-- name: MarkUserInviteUsed :exec
+UPDATE user_invites
+SET used_by = $2, used_at = now()
+WHERE id = $1 AND used_at IS NULL;
+
+-- name: DeleteUserInvite :exec
+DELETE FROM user_invites
+WHERE id = $1;

app/backend/sqlc/schema.sql

@@ -316,3 +316,14 @@ CREATE TABLE banners (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
     updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
 );
+
+CREATE TABLE user_invites (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    token_hash VARCHAR(64) NOT NULL UNIQUE,
+    email VARCHAR(255),
+    created_by UUID REFERENCES users(id) ON DELETE SET NULL,
+    expires_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    used_by UUID REFERENCES users(id) ON DELETE SET NULL,
+    used_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);

app/frontend/src/app/App.tsx

@@ -13,6 +13,7 @@ import { WebhooksPage } from '@/features/webhooks/pages/WebhooksPage';
 import { OperationsPage } from '@/features/operations/pages/OperationsPage';
 import { AdminPage } from '@/features/admin/pages/AdminPage';
 import { LandingPage } from '@/features/landing/LandingPage';
+import { useBranding } from '@/lib/use-branding';
 import {
   DocsPage,
   PeoplePage,
@@ -22,8 +23,9 @@ import {
   HighAvailabilityPage,
   SecurityPage,
   ComponentShowcase,
+  GitHubAppCallbackPage,
 } from '@/features/secondary/pages';
-import { SignInPage, SignUpPage } from '@/features/auth/pages';
+import { AcceptInvitePage, SignInPage, SignUpPage } from '@/features/auth/pages';
 import { useAuthSession } from '@/lib/use-auth-session';
 import { useDemoMode } from '@/lib/demo-mode';
 import { getCurrentUserProfile } from '@/lib/api-client';
@@ -126,12 +128,14 @@ function NotFoundPage() {
 }
 
 export default function App() {
+  useBranding();
   return (
     <ErrorBoundary>
       <Routes>
         <Route path="/" element={<LandingPage />} />
         <Route path="/auth/sign-in" element={<SignInPage />} />
         <Route path="/auth/sign-up" element={<SignUpPage />} />
+        <Route path="/auth/accept-invite" element={<AcceptInvitePage />} />
 
         {/* Public browsing — approved projects, templates, docs. */}
         {/* Project workspace renders outside the shell — fullscreen canvas, no nav chrome */}
@@ -153,6 +157,7 @@ export default function App() {
             <Route path="/builds" element={<BuildsPage />} />
             <Route path="/people" element={<PeoplePage />} />
             <Route path="/settings" element={<SettingsPage />} />
+            <Route path="/git/github-app/callback" element={<GitHubAppCallbackPage />} />
             <Route path="/settings/audit-logs" element={<AuditLogsPage />} />
             <Route path="/settings/webhooks" element={<WebhooksPage />} />
             <Route path="/showcase" element={<ComponentShowcase />} />

app/frontend/src/app/layout/PlatformShell.tsx

@@ -41,7 +41,7 @@ import {
 import { signOutAuthSession } from '@/lib/auth-client';
 import { isDemoSearch } from '@/lib/demo-mode';
 import { useAuthSession } from '@/lib/use-auth-session';
-import { BannerBar, useToast } from '@/shared/components';
+import { BannerBar, BrandWordmark, useToast } from '@/shared/components';
 
 type NavItem = { label: string; href: string; icon: typeof FolderKanban; hint: string };
 type NavSection = { title: string; items: NavItem[] };
@@ -398,7 +398,7 @@ export function PlatformShell() {
             }}
           >
             <NavLink to={href('/projects')} className="mr-5 text-sm font-extrabold tracking-tight text-[var(--text-primary)]" style={{ fontFamily: 'Inter, sans-serif' }}>
-              contain<span style={{ color: 'var(--accent-primary)' }}>r</span>
+              <BrandWordmark />
             </NavLink>
 
             <div className="flex items-center gap-5">

app/frontend/src/features/admin/pages/AdminPage.tsx

@@ -4,22 +4,29 @@ import { Link } from 'react-router-dom';
 import {
   CheckCircle2,
   Clock,
+  Copy,
   FolderKanban,
   Megaphone,
   Pencil,
   ShieldCheck,
   Trash2,
+  UserPlus,
   Users,
   XCircle,
 } from 'lucide-react';
 import {
   createBanner,
+  createInvite,
   deleteBanner,
   deleteProject,
   getAdminOverview,
+  impersonateUser,
+  type ImpersonationResult,
   listAdminBanners,
   listAdminUsers,
+  listInvites,
   listProjects,
+  revokeInvite,
   setProjectApproval,
   setUserAdmin,
   updateBanner,
@@ -57,9 +64,22 @@ export function AdminPage() {
   const usersQuery = useQuery({ queryKey: ['admin-users'], queryFn: listAdminUsers, enabled: !isDemoMode });
   const projectsQuery = useQuery({ queryKey: ['admin-projects'], queryFn: () => listProjects({ limit: 100 }), enabled: !isDemoMode });
   const bannersQuery = useQuery({ queryKey: ['admin-banners'], queryFn: listAdminBanners, enabled: !isDemoMode });
+  const invitesQuery = useQuery({
+    queryKey: ['admin-invites'],
+    queryFn: listInvites,
+    enabled: !isDemoMode,
+    select: (list) =>
+      list.map((invite) => ({
+        ...invite,
+        expired: !invite.used_at && new Date(invite.expires_at).getTime() < Date.now(),
+      })),
+  });
   const [editingProject, setEditingProject] = useState<ProjectEntity | null>(null);
   const [editForm, setEditForm] = useState({ name: '', description: '' });
   const [bannerForm, setBannerForm] = useState({ title: '', body: '', level: 'info' as Banner['level'] });
+  const [inviteEmail, setInviteEmail] = useState('');
+  const [inviteLink, setInviteLink] = useState<string | null>(null);
+  const [impersonation, setImpersonation] = useState<ImpersonationResult | null>(null);
 
   const invalidate = () => {
     queryClient.invalidateQueries({ queryKey: ['admin-overview'] });
@@ -67,9 +87,35 @@ export function AdminPage() {
     queryClient.invalidateQueries({ queryKey: ['admin-projects'] });
     queryClient.invalidateQueries({ queryKey: ['admin-banners'] });
     queryClient.invalidateQueries({ queryKey: ['active-banners'] });
+    queryClient.invalidateQueries({ queryKey: ['admin-invites'] });
     queryClient.invalidateQueries({ queryKey: ['projects'] });
   };
 
+  const inviteCreateMutation = useMutation({
+    mutationFn: () => createInvite({ email: inviteEmail.trim() || undefined }),
+    onSuccess: (result) => {
+      setInviteLink(`${window.location.origin}${result.url}`);
+      setInviteEmail('');
+      invalidate();
+    },
+    onError: (error) => showToast('error', 'Invite failed', error instanceof Error ? error.message : undefined),
+  });
+
+  const inviteRevokeMutation = useMutation({
+    mutationFn: (id: string) => revokeInvite(id),
+    onSuccess: () => {
+      showToast('success', 'Invite revoked');
+      invalidate();
+    },
+    onError: (error) => showToast('error', 'Revoke failed', error instanceof Error ? error.message : undefined),
+  });
+
+  const impersonateMutation = useMutation({
+    mutationFn: (id: string) => impersonateUser(id),
+    onSuccess: (result) => setImpersonation(result),
+    onError: (error) => showToast('error', 'Impersonation failed', error instanceof Error ? error.message : undefined),
+  });
+
   const bannerCreateMutation = useMutation({
     mutationFn: () =>
       createBanner({
@@ -167,6 +213,7 @@ export function AdminPage() {
   const users = usersQuery.data ?? [];
   const allProjects = projectsQuery.data ?? [];
   const banners = bannersQuery.data ?? [];
+  const invites = invitesQuery.data ?? [];
 
   return (
     <div className="mx-auto max-w-6xl px-5 py-8">
@@ -378,6 +425,97 @@ export function AdminPage() {
         </div>
       </section>
 
+      <section className="mt-8">
+        <div className="mb-3 flex items-center gap-2">
+          <UserPlus size={15} className="text-[var(--accent-primary)]" />
+          <h2 className="text-[15px] font-semibold text-[var(--text-primary)]">Team invites</h2>
+        </div>
+        <div className="overflow-hidden rounded-[var(--radius-lg)] border border-[var(--border-subtle)] bg-[var(--surface-card)]">
+          <div className="flex flex-wrap items-center gap-2 border-b border-[var(--border-subtle)] px-4 py-3">
+            <input
+              value={inviteEmail}
+              onChange={(e) => setInviteEmail(e.target.value)}
+              placeholder="Bind to email (optional)"
+              type="email"
+              className="h-9 min-w-64 flex-1 rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)] px-3 text-sm focus:border-[var(--accent-primary)]"
+            />
+            <button
+              type="button"
+              onClick={() => inviteCreateMutation.mutate()}
+              disabled={inviteCreateMutation.isPending}
+              className="rounded-[var(--radius-md)] bg-[var(--accent-primary)] px-4 py-2 text-[12px] font-semibold text-[var(--accent-on)] disabled:opacity-50"
+            >
+              {inviteCreateMutation.isPending ? 'Creating…' : 'Create invite link'}
+            </button>
+          </div>
+          {inviteLink ? (
+            <div className="flex items-center gap-2 border-b border-[var(--border-subtle)] bg-[var(--accent-primary-soft)] px-4 py-2.5">
+              <code className="min-w-0 flex-1 truncate text-[12px] text-[var(--accent-primary)]">{inviteLink}</code>
+              <button
+                type="button"
+                onClick={() => {
+                  navigator.clipboard?.writeText(inviteLink);
+                  showToast('success', 'Link copied');
+                }}
+                className="inline-flex items-center gap-1 rounded-[var(--radius-md)] border border-[var(--border-default)] px-2.5 py-1 text-[11px] font-medium text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
+              >
+                <Copy size={11} /> Copy
+              </button>
+              <button
+                type="button"
+                onClick={() => setInviteLink(null)}
+                className="text-[11px] text-[var(--text-tertiary)] hover:text-[var(--text-secondary)]"
+              >
+                Dismiss
+              </button>
+            </div>
+          ) : null}
+          {invites.map((invite) => {
+            const used = Boolean(invite.used_at);
+            const expired = !used && invite.expired;
+            return (
+              <div
+                key={invite.id}
+                className="flex items-center gap-4 border-b border-[var(--border-subtle)] px-4 py-3 last:border-b-0"
+              >
+                <div className="min-w-0 flex-1">
+                  <p className="truncate text-[13.5px] font-medium text-[var(--text-primary)]">
+                    {invite.email || 'Open invite'}
+                  </p>
+                  <p className="truncate text-[11.5px] text-[var(--text-tertiary)]">
+                    expires {new Date(invite.expires_at).toLocaleString()}
+                  </p>
+                </div>
+                <span
+                  className={`rounded-full px-2.5 py-0.5 text-[10.5px] font-semibold ${
+                    used
+                      ? 'bg-[var(--surface-muted)] text-[var(--text-tertiary)]'
+                      : expired
+                        ? 'bg-[var(--error-soft)] text-[var(--error)]'
+                        : 'bg-[var(--success-soft)] text-[var(--success)]'
+                  }`}
+                >
+                  {used ? 'used' : expired ? 'expired' : 'open'}
+                </span>
+                {!used ? (
+                  <button
+                    type="button"
+                    onClick={() => inviteRevokeMutation.mutate(invite.id)}
+                    disabled={inviteRevokeMutation.isPending}
+                    className="rounded-[var(--radius-md)] border border-[var(--error)] px-2.5 py-1.5 text-[12px] font-medium text-[var(--error)] hover:bg-[var(--error-soft)] disabled:opacity-50"
+                  >
+                    Revoke
+                  </button>
+                ) : null}
+              </div>
+            );
+          })}
+          {invites.length === 0 ? (
+            <p className="px-4 py-6 text-center text-[13px] text-[var(--text-tertiary)]">No invites yet.</p>
+          ) : null}
+        </div>
+      </section>
+
       <section className="mt-8 pb-10">
         <div className="mb-3 flex items-center gap-2">
           <Users size={15} className="text-[var(--accent-tertiary)]" />
@@ -391,6 +529,7 @@ export function AdminPage() {
               isSelf={user.id === myId}
               pending={adminMutation.isPending}
               onToggle={(isAdmin) => adminMutation.mutate({ id: user.id, isAdmin })}
+              onImpersonate={user.is_admin || user.id === myId ? undefined : () => impersonateMutation.mutate(user.id)}
             />
           ))}
           {users.length === 0 ? (
@@ -399,6 +538,52 @@ export function AdminPage() {
         </div>
       </section>
 
+      {impersonation ? (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 p-4 backdrop-blur-sm">
+          <div className="w-full max-w-lg overflow-hidden rounded-[var(--radius-lg)] border border-[var(--border-subtle)] bg-[var(--bg-base)] shadow-2xl">
+            <div className="border-b border-[var(--border-subtle)] px-5 py-4">
+              <h2 className="text-[15px] font-semibold text-[var(--text-primary)]">
+                Impersonating {impersonation.user.email}
+              </h2>
+              <p className="text-xs text-[var(--text-tertiary)]">
+                Token valid until {new Date(impersonation.expires_at).toLocaleString()} — audit-logged.
+              </p>
+            </div>
+            <div className="space-y-3 px-5 py-4">
+              <div className="flex items-center gap-2 rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)] px-3 py-2.5">
+                <code className="min-w-0 flex-1 truncate text-[12px] text-[var(--text-primary)]">
+                  {impersonation.token}
+                </code>
+                <button
+                  type="button"
+                  onClick={() => {
+                    navigator.clipboard?.writeText(impersonation.token);
+                    showToast('success', 'Token copied');
+                  }}
+                  className="inline-flex shrink-0 items-center gap-1 rounded-[var(--radius-md)] border border-[var(--border-default)] px-2.5 py-1 text-[11px] font-medium text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
+                >
+                  <Copy size={11} /> Copy
+                </button>
+              </div>
+              <p className="text-[12px] leading-relaxed text-[var(--text-tertiary)]">
+                Use it as a bearer token — e.g. <code className="text-[var(--text-secondary)]">CONTAINR_TOKEN=&lt;token&gt;
+                containr &lt;command&gt;</code> or <code className="text-[var(--text-secondary)]">Authorization: Bearer
+                &lt;token&gt;</code>. Requests run with that user's permissions for 15 minutes.
+              </p>
+            </div>
+            <div className="flex items-center justify-end gap-2 border-t border-[var(--border-subtle)] px-5 py-3.5">
+              <button
+                type="button"
+                onClick={() => setImpersonation(null)}
+                className="rounded-[var(--radius-md)] bg-[var(--accent-primary)] px-4 py-2 text-xs font-semibold text-[var(--accent-on)]"
+              >
+                Done
+              </button>
+            </div>
+          </div>
+        </div>
+      ) : null}
+
       {editingProject ? (
         <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 p-4 backdrop-blur-sm">
           <div className="w-full max-w-md overflow-hidden rounded-[var(--radius-lg)] border border-[var(--border-subtle)] bg-[var(--bg-base)] shadow-2xl">
@@ -454,11 +639,13 @@ function UserRow({
   isSelf,
   pending,
   onToggle,
+  onImpersonate,
 }: {
   user: AdminUser;
   isSelf: boolean;
   pending: boolean;
   onToggle: (isAdmin: boolean) => void;
+  onImpersonate?: () => void;
 }) {
   return (
     <div className="flex items-center gap-4 border-b border-[var(--border-subtle)] px-4 py-3 last:border-b-0">
@@ -477,6 +664,15 @@ function UserRow({
           <ShieldCheck size={11} /> admin
         </span>
       ) : null}
+      {onImpersonate ? (
+        <button
+          type="button"
+          onClick={onImpersonate}
+          className="rounded-[var(--radius-md)] border border-[var(--border-default)] px-3 py-1.5 text-[12px] font-medium text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
+        >
+          Impersonate
+        </button>
+      ) : null}
       <button
         type="button"
         onClick={() => onToggle(!user.is_admin)}

app/frontend/src/features/auth/pages.tsx

@@ -11,6 +11,7 @@ import {
   signUpWithEmail,
   startGitHubSignIn,
 } from '@/lib/auth-client';
+import { acceptInvite, getInvite } from '@/lib/api-client';
 import { useAuthSession } from '@/lib/use-auth-session';
 
 function sanitizeRedirect(raw: string | null): string {
@@ -258,6 +259,139 @@ export function SignInPage() {
   );
 }
 
+export function AcceptInvitePage() {
+  const navigate = useNavigate();
+  const queryClient = useQueryClient();
+  const [searchParams] = useSearchParams();
+  const token = searchParams.get('token') ?? '';
+
+  const sessionQuery = useAuthSession();
+  const inviteQuery = useQuery({
+    queryKey: ['invite', token],
+    queryFn: () => getInvite(token),
+    enabled: token.length > 0,
+    retry: false,
+  });
+
+  const [name, setName] = useState('');
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState<string | null>(null);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
+  if (sessionQuery.data) {
+    return <Navigate to="/projects" replace />;
+  }
+
+  const boundEmail = inviteQuery.data?.email ?? undefined;
+  const effectiveEmail = boundEmail ?? email;
+  const inviteValid = inviteQuery.data?.valid === true;
+
+  const submit = async (event: FormEvent) => {
+    event.preventDefault();
+    setError(null);
+    setIsSubmitting(true);
+    try {
+      await acceptInvite({ token, name: name.trim(), email: effectiveEmail.trim(), password });
+      // Establish the cookie session — the accept endpoint creates the
+      // account, sign-in creates the browser session.
+      await signInWithEmail(effectiveEmail.trim(), password);
+      await queryClient.invalidateQueries({ queryKey: ['auth-session'] });
+      navigate('/projects', { replace: true });
+    } catch (exception) {
+      setError(exception instanceof Error ? exception.message : 'Failed to accept invite');
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  if (!token) {
+    return (
+      <AuthLayout>
+        <AuthCard title="Invalid invite" subtitle="This link is missing its invite token.">
+          <AuthErrorNotice message="Ask your administrator for a fresh invite link." />
+        </AuthCard>
+      </AuthLayout>
+    );
+  }
+
+  return (
+    <AuthLayout>
+      <AuthCard
+        title="Join the team"
+        subtitle={boundEmail ? `Invited as ${boundEmail}` : 'You have been invited — create your account.'}
+      >
+        {error ? <AuthErrorNotice message={error} /> : null}
+        {inviteQuery.isLoading ? <AuthInfoNotice message="Validating invite…" /> : null}
+        {inviteQuery.isError ? <AuthErrorNotice message="This invite link is not valid." /> : null}
+        {inviteQuery.data && !inviteValid ? (
+          <AuthErrorNotice message={inviteQuery.data.used ? 'This invite was already used.' : 'This invite has expired.'} />
+        ) : null}
+
+        {inviteValid ? (
+          <form className="space-y-3" onSubmit={submit}>
+            <label className="block text-xs font-medium uppercase tracking-wider text-[var(--text-muted)]">
+              Name
+              <input
+                type="text"
+                value={name}
+                onChange={(e) => setName(e.target.value)}
+                required
+                className="mt-2 w-full rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)] px-3 py-2.5 text-sm text-[var(--text-primary)] outline-none transition-colors focus:border-[var(--accent-primary)]"
+                placeholder="Your name"
+              />
+            </label>
+
+            <label className="block text-xs font-medium uppercase tracking-wider text-[var(--text-muted)]">
+              Email
+              <input
+                type="email"
+                value={boundEmail ?? email}
+                onChange={(e) => setEmail(e.target.value)}
+                disabled={Boolean(boundEmail)}
+                required
+                className="mt-2 w-full rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)] px-3 py-2.5 text-sm text-[var(--text-primary)] outline-none transition-colors focus:border-[var(--accent-primary)] disabled:opacity-60"
+                placeholder="[email protected]"
+              />
+            </label>
+
+            <label className="block text-xs font-medium uppercase tracking-wider text-[var(--text-muted)]">
+              Password
+              <input
+                type="password"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                autoComplete="new-password"
+                minLength={8}
+                required
+                className="mt-2 w-full rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)] px-3 py-2.5 text-sm text-[var(--text-primary)] outline-none transition-colors focus:border-[var(--accent-primary)]"
+                placeholder="At least 8 characters"
+              />
+            </label>
+
+            <button
+              type="submit"
+              disabled={isSubmitting}
+              className="mt-1 inline-flex h-10 w-full items-center justify-center gap-2 rounded-[var(--radius-md)] text-sm font-semibold text-[var(--accent-on)] shadow-lg transition-all disabled:cursor-not-allowed disabled:opacity-60"
+              style={{ background: 'var(--accent-primary)' }}
+            >
+              {isSubmitting ? <Loader2 size={15} className="animate-spin" /> : <User2 size={15} />}
+              Accept invite
+            </button>
+          </form>
+        ) : null}
+
+        <div className="mt-5 flex items-center justify-between text-xs text-[var(--text-secondary)]">
+          <span>Already have an account?</span>
+          <Link to="/auth/sign-in" className="inline-flex items-center gap-1 text-[var(--accent-primary)] hover:underline">
+            Sign in <ArrowRight size={12} />
+          </Link>
+        </div>
+      </AuthCard>
+    </AuthLayout>
+  );
+}
+
 export function SignUpPage() {
   const navigate = useNavigate();
   const queryClient = useQueryClient();

app/frontend/src/features/landing/LandingPage.tsx

@@ -15,6 +15,8 @@ import { listProjects, listTemplates } from '@/lib/api-client';
 import { DocsBrowser } from '@/features/docs/DocsBrowser';
 import { useAuthSession } from '@/lib/use-auth-session';
 import { useDemoMode } from '@/lib/demo-mode';
+import { useBranding } from '@/lib/use-branding';
+import { BrandWordmark } from '@/shared/components';
 import { demoProjects, demoTemplates } from '@/lib/demo-data';
 
 const features = [
@@ -28,6 +30,7 @@ const features = [
 
 export function LandingPage() {
   const isDemoMode = useDemoMode();
+  const { logoUrl, productName } = useBranding();
   const sessionQuery = useAuthSession({ enabled: !isDemoMode });
   const signedIn = !isDemoMode && Boolean(sessionQuery.data);
   const demo = isDemoMode ? '?demo=1' : '';
@@ -45,9 +48,9 @@ export function LandingPage() {
       <header className="sticky top-0 z-40 border-b border-[var(--border-subtle)] bg-[var(--bg-base)]/80 backdrop-blur-xl">
         <div className="mx-auto flex h-14 max-w-6xl items-center justify-between px-5">
           <Link to="/" className="flex items-center gap-2.5">
-            <img src="/containr.svg" alt="Containr" className="h-7 w-7 rounded-lg" />
+            <img src={logoUrl || '/containr.svg'} alt={productName} className="h-7 w-7 rounded-lg object-contain" />
             <span className="text-[15px] font-extrabold tracking-tight text-[var(--text-primary)]">
-              contain<span style={{ color: 'var(--accent-primary)' }}>r</span>
+              <BrandWordmark />
             </span>
           </Link>
           <nav className="flex items-center gap-1 text-[13px]">

app/frontend/src/features/secondary/pages.tsx

@@ -44,10 +44,15 @@ import {
   listServiceVariables,
   updateServiceVariables,
   getGitHubAppInstallUrl,
+  getGitHubAppStatus,
+  createGitHubAppManifest,
+  convertGitHubAppCode,
   connectGitHubApp,
   updateCurrentUserProfile,
   getPlatformSettings,
   updatePlatformSettings,
+  type Branding,
+  type BrandingInput,
   getHAStatus,
   setHAEnabled,
   triggerFailover,
@@ -948,6 +953,35 @@ function GitProvidersSection() {
     }
   };
 
+  // Admins can self-provision the instance's GitHub App via the manifest
+  // flow when GITHUB_APP_* env vars were never configured.
+  const profileQuery = useQuery({ queryKey: ['user-profile'], queryFn: getCurrentUserProfile, retry: false });
+  const isAdmin = Boolean(profileQuery.data?.isAdmin);
+  const ghAppQuery = useQuery({
+    queryKey: ['github-app-status'],
+    queryFn: getGitHubAppStatus,
+    enabled: isAdmin,
+    retry: false,
+  });
+  const provisionMutation = useMutation({
+    mutationFn: async () => {
+      const { url, manifest } = await createGitHubAppManifest({ base_url: window.location.origin });
+      // GitHub requires a form POST carrying the manifest JSON.
+      const form = document.createElement('form');
+      form.method = 'POST';
+      form.action = url;
+      const input = document.createElement('input');
+      input.type = 'hidden';
+      input.name = 'manifest';
+      input.value = manifest;
+      form.appendChild(input);
+      document.body.appendChild(form);
+      form.submit();
+    },
+  });
+  const ghAppStatus = ghAppQuery.data;
+  const showProvision = isAdmin && ghAppStatus && !ghAppStatus.configured;
+
   const [form, setForm] = useState({
     name: 'github' as (typeof gitProviderTypes)[number]['value'],
     displayName: '',
@@ -994,13 +1028,25 @@ function GitProvidersSection() {
           </div>
         </div>
         <div className="flex items-center gap-2">
-          <button
-            onClick={() => void installApp()}
-            className="flex items-center gap-2 h-9 px-4 rounded-[var(--radius-md)] border border-[var(--border-subtle)] text-sm font-medium text-[var(--text-secondary)] hover:border-[var(--border-default)] transition-colors"
-          >
-            <GitBranch size={14} />
-            Install GitHub App
-          </button>
+          {showProvision ? (
+            <button
+              onClick={() => provisionMutation.mutate()}
+              disabled={provisionMutation.isPending}
+              className="flex items-center gap-2 h-9 px-4 rounded-[var(--radius-md)] text-[var(--accent-on)] text-sm font-medium shadow-lg transition-all disabled:opacity-50"
+              style={{ background: 'var(--accent-primary)' }}
+            >
+              <GitBranch size={14} />
+              {provisionMutation.isPending ? 'Opening GitHub…' : 'Set up GitHub App'}
+            </button>
+          ) : (
+            <button
+              onClick={() => void installApp()}
+              className="flex items-center gap-2 h-9 px-4 rounded-[var(--radius-md)] border border-[var(--border-subtle)] text-sm font-medium text-[var(--text-secondary)] hover:border-[var(--border-default)] transition-colors"
+            >
+              <GitBranch size={14} />
+              Install GitHub App
+            </button>
+          )}
           <button
             onClick={() => setFormOpen((open) => !open)}
             className="flex items-center gap-2 h-9 px-4 rounded-[var(--radius-md)] text-[var(--accent-on)] text-sm font-medium shadow-lg transition-all"
@@ -1017,6 +1063,11 @@ function GitProvidersSection() {
           {installUrlError}
         </div>
       )}
+      {provisionMutation.isError && (
+        <div className="mb-4 px-4 py-3 rounded-[var(--radius-md)] bg-[var(--error-soft)] text-sm text-[var(--error)]">
+          {provisionMutation.error instanceof Error ? provisionMutation.error.message : 'Failed to start GitHub App setup'}
+        </div>
+      )}
       {connectAppMutation.isPending && (
         <div className="mb-4 px-4 py-3 rounded-[var(--radius-md)] bg-[var(--surface-muted)] text-sm text-[var(--text-secondary)]">
           Completing GitHub App installation…
@@ -1149,6 +1200,66 @@ function GitProvidersSection() {
   );
 }
 
+// GitHub redirects here after the admin completes the manifest form —
+// /git/github-app/callback?code=…&state=…
+export function GitHubAppCallbackPage() {
+  const [searchParams] = useSearchParams();
+  const navigate = useNavigate();
+  const queryClient = useQueryClient();
+  const code = searchParams.get('code');
+
+  const convertMutation = useMutation({
+    mutationFn: (appCode: string) => convertGitHubAppCode(appCode),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['github-app-status'] });
+      navigate('/settings', { replace: true });
+    },
+  });
+  const firedRef = useRef(false);
+  useEffect(() => {
+    if (code && !firedRef.current) {
+      firedRef.current = true;
+      convertMutation.mutate(code);
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- fire once per code
+  }, [code]);
+
+  return (
+    <div className="mx-auto max-w-md px-5 py-16 text-center">
+      {!code ? (
+        <>
+          <AlertCircle size={28} className="mx-auto text-[var(--error)]" />
+          <h1 className="mt-4 text-lg font-semibold text-[var(--text-primary)]">Missing code</h1>
+          <p className="mt-2 text-sm text-[var(--text-tertiary)]">
+            GitHub did not return an app code. Start the setup again from Git providers.
+          </p>
+        </>
+      ) : convertMutation.isError ? (
+        <>
+          <AlertCircle size={28} className="mx-auto text-[var(--error)]" />
+          <h1 className="mt-4 text-lg font-semibold text-[var(--text-primary)]">Setup failed</h1>
+          <p className="mt-2 text-sm text-[var(--text-tertiary)]">
+            {convertMutation.error instanceof Error ? convertMutation.error.message : 'Could not provision the GitHub App'}
+          </p>
+          <button
+            type="button"
+            onClick={() => navigate('/settings', { replace: true })}
+            className="mt-6 rounded-[var(--radius-md)] bg-[var(--accent-primary)] px-4 py-2 text-sm font-semibold text-[var(--accent-on)]"
+          >
+            Back to settings
+          </button>
+        </>
+      ) : (
+        <>
+          <Loader2 size={28} className="mx-auto animate-spin text-[var(--accent-primary)]" />
+          <h1 className="mt-4 text-lg font-semibold text-[var(--text-primary)]">Setting up GitHub App</h1>
+          <p className="mt-2 text-sm text-[var(--text-tertiary)]">Exchanging the app credentials…</p>
+        </>
+      )}
+    </div>
+  );
+}
+
 function PlatformSettingsSection() {
   const queryClient = useQueryClient();
   const settingsQuery = useQuery({
@@ -1158,6 +1269,7 @@ function PlatformSettingsSection() {
 
   const [signupDraft, setSignupDraft] = useState<boolean | null>(null);
   const [tokenDraft, setTokenDraft] = useState('');
+  const [brandDraft, setBrandDraft] = useState<BrandingInput>({});
   const [feedback, setFeedback] = useState<string | null>(null);
   const [error, setError] = useState<string | null>(null);
 
@@ -1168,8 +1280,10 @@ function PlatformSettingsSection() {
     mutationFn: updatePlatformSettings,
     onSuccess: (settings) => {
       queryClient.setQueryData(['platform-settings'], settings);
+      queryClient.invalidateQueries({ queryKey: ['branding'] });
       setSignupDraft(null);
       setTokenDraft('');
+      setBrandDraft({});
       setFeedback('Settings saved.');
       setError(null);
     },
@@ -1279,6 +1393,59 @@ function PlatformSettingsSection() {
             </a>
           </div>
 
+          <div className="p-4 rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--surface-muted)]">
+            <div className="flex items-center justify-between mb-2">
+              <span className="text-xs font-medium uppercase tracking-wider text-[var(--text-muted)]">Branding</span>
+              <span className="text-xs text-[var(--text-tertiary)]">leave blank to keep Containr defaults</span>
+            </div>
+            <p className="text-xs text-[var(--text-secondary)] mb-3">
+              White-label this instance — product name, logo, accent color and links apply
+              to the shell, login page and document title.
+            </p>
+            <div className="grid grid-cols-2 gap-2 max-sm:grid-cols-1">
+              {(
+                [
+                  ['productName', 'Product name'],
+                  ['logoUrl', 'Logo URL'],
+                  ['faviconUrl', 'Favicon URL'],
+                  ['accentColor', 'Accent color (#hex)'],
+                  ['docsUrl', 'Docs URL'],
+                  ['supportUrl', 'Support URL'],
+                ] as const
+              ).map(([field, label]) => (
+                <label key={field} className="block">
+                  <span className="mb-1 block text-[11px] text-[var(--text-tertiary)]">{label}</span>
+                  <input
+                    value={brandDraft[field] ?? settingsQuery.data?.branding[field] ?? ''}
+                    onChange={(e) => setBrandDraft((d) => ({ ...d, [field]: e.target.value }))}
+                    className="h-9 w-full px-3 rounded-[var(--radius-md)] border border-[var(--border-subtle)] bg-[var(--bg-void)] text-sm focus:border-[var(--accent-primary)] transition-colors"
+                  />
+                </label>
+              ))}
+            </div>
+            <div className="flex gap-2 mt-3">
+              <button
+                onClick={() => {
+                  const b = { ...(settingsQuery.data?.branding ?? {}), ...brandDraft } as Branding;
+                  saveMutation.mutate({ branding: b });
+                }}
+                disabled={saveMutation.isPending || Object.keys(brandDraft).length === 0}
+                className="h-9 px-4 rounded-[var(--radius-md)] text-sm font-medium text-[var(--accent-on)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
+                style={{ background: 'var(--accent-primary)' }}
+              >
+                Save branding
+              </button>
+              {Object.keys(brandDraft).length > 0 ? (
+                <button
+                  onClick={() => setBrandDraft({})}
+                  className="h-9 px-3 rounded-[var(--radius-md)] border border-[var(--border-subtle)] text-sm text-[var(--text-secondary)]"
+                >
+                  Reset draft
+                </button>
+              ) : null}
+            </div>
+          </div>
+
           {feedback ? <p className="text-xs text-[var(--success)]">{feedback}</p> : null}
           {error ? <p className="text-xs text-[var(--error)]">{error}</p> : null}
         </div>

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

@@ -2717,6 +2717,63 @@ export interface paths {
         };
         trace?: never;
     };
+    "/admin/users/{id}/impersonate": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /**
+         * Impersonate a user
+         * @description Mint a 15-minute bearer token acting as the target user. Admin-only; admin accounts cannot be impersonated and every mint is audit-logged. The token carries an `impersonated_by` claim.
+         */
+        post: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path: {
+                    id: string;
+                };
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description Impersonation token */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            token?: string;
+                            /** Format: date-time */
+                            expires_at?: string;
+                            user?: {
+                                id?: string;
+                                email?: string;
+                                name?: string;
+                            };
+                        };
+                    };
+                };
+                /** @description Target is an admin account */
+                403: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/admin/projects/{id}": {
         parameters: {
             query?: never;
@@ -4015,6 +4072,258 @@ export interface paths {
         };
         trace?: never;
     };
+    "/auth/invites/{token}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /** Validate an invite token (public) */
+        get: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description Invite state */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            valid?: boolean;
+                            used?: boolean;
+                            expired?: boolean;
+                            email?: string | null;
+                            /** Format: date-time */
+                            expires_at?: string;
+                        };
+                    };
+                };
+                /** @description Invite not found */
+                404: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/auth/accept-invite": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Register via an invite link (public) */
+        post: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody: {
+                content: {
+                    "application/json": {
+                        token: string;
+                        name: string;
+                        email: string;
+                        password: string;
+                    };
+                };
+            };
+            responses: {
+                /** @description Created session */
+                201: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": components["schemas"]["LoginResponse"];
+                    };
+                };
+                /** @description Invite used or expired */
+                410: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/admin/invites": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /** List invites (admin) */
+        get: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description All invites */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            invites?: Record<string, never>[];
+                        };
+                    };
+                };
+            };
+        };
+        put?: never;
+        /** Create an invite link (admin) */
+        post: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody?: {
+                content: {
+                    "application/json": {
+                        /** @description Optionally bind the invite to this email */
+                        email?: string;
+                        /** @default 168 */
+                        expires_in_hours?: number;
+                    };
+                };
+            };
+            responses: {
+                /** @description Created invite with one-time token */
+                201: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            invite?: Record<string, never>;
+                            /** @description Shown once */
+                            token?: string;
+                            url?: string;
+                        };
+                    };
+                };
+            };
+        };
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/admin/invites/{id}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post?: never;
+        /** Revoke an invite (admin) */
+        delete: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path: {
+                    id: string;
+                };
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description Revoked */
+                204: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/branding": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /**
+         * White-label branding (public)
+         * @description Instance branding payload — product name, logo/favicon URLs,
+         *     accent color, docs/support links. Unauthenticated so the login
+         *     page and shell can brand themselves before a session exists.
+         *     Unset fields return Containr defaults.
+         */
+        get: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description Branding configuration */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": components["schemas"]["Branding"];
+                    };
+                };
+            };
+        };
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/audit-logs": {
         parameters: {
             query?: never;
@@ -4980,6 +5289,15 @@ export interface paths {
                         signup_enabled?: boolean;
                         /** @description Cloudflare Tunnel token. Empty string clears the stored token and removes the cloudflared container. */
                         cloudflare_tunnel_token?: string;
+                        /** @description White-label fields. Empty string clears a field back to the Containr default. */
+                        branding?: {
+                            product_name?: string;
+                            logo_url?: string;
+                            favicon_url?: string;
+                            accent_color?: string;
+                            docs_url?: string;
+                            support_url?: string;
+                        };
                     };
                 };
             };
@@ -5400,6 +5718,162 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/admin/git/github-app": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /**
+         * GitHub App provisioning status
+         * @description Shows whether the instance GitHub App is configured, and whether credentials come from app_settings or environment variables.
+         */
+        get: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody?: never;
+            responses: {
+                /** @description Provisioning status */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            configured?: boolean;
+                            /** @enum {string} */
+                            source?: "settings" | "env" | "none";
+                            app_id?: string;
+                            slug?: string;
+                            name?: string;
+                        };
+                    };
+                };
+            };
+        };
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/admin/git/github-app/manifest": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /**
+         * Build GitHub App manifest
+         * @description Returns a GitHub App manifest for self-provisioning. The client POSTs `manifest` verbatim as a form field to `url`; GitHub then redirects to the instance's /git/github-app/callback with a code.
+         */
+        post: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody: {
+                content: {
+                    "application/json": {
+                        /** @description Public https base URL of this instance */
+                        base_url: string;
+                        name?: string;
+                        /** @description Create the app under this GitHub organization */
+                        organization?: string;
+                    };
+                };
+            };
+            responses: {
+                /** @description Manifest + submission URL */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            url?: string;
+                            /** @description JSON string — POST as form field `manifest` */
+                            manifest?: string;
+                            state?: string;
+                        };
+                    };
+                };
+            };
+        };
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/admin/git/github-app/convert": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /**
+         * Exchange manifest callback code
+         * @description Exchanges the `code` from the manifest redirect for the app credentials and stores them in app_settings (overriding env vars).
+         */
+        post: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody: {
+                content: {
+                    "application/json": {
+                        code: string;
+                    };
+                };
+            };
+            responses: {
+                /** @description App provisioned */
+                200: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            app_id?: number;
+                            slug?: string;
+                            name?: string;
+                        };
+                    };
+                };
+                /** @description GitHub conversion failed */
+                502: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/git/providers/{providerId}": {
         parameters: {
             query?: never;
@@ -8125,6 +8599,68 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/git/github-app/webhook": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /**
+         * GitHub App webhook receiver
+         * @description Single app-level webhook all installed repositories deliver to (configured via the manifest's hook_attributes). Verified with X-Hub-Signature-256 against the provisioned webhook secret. Push events enqueue deployments for services tracking the repo+branch.
+         */
+        post: {
+            parameters: {
+                query?: never;
+                header?: never;
+                path?: never;
+                cookie?: never;
+            };
+            requestBody: {
+                content: {
+                    "application/json": Record<string, never>;
+                };
+            };
+            responses: {
+                /** @description Event accepted */
+                202: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content: {
+                        "application/json": {
+                            received?: boolean;
+                            branch?: string;
+                            deployments?: number;
+                            ignored?: string;
+                        };
+                    };
+                };
+                /** @description Invalid signature */
+                401: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+                /** @description GitHub App webhook secret not configured */
+                503: {
+                    headers: {
+                        [name: string]: unknown;
+                    };
+                    content?: never;
+                };
+            };
+        };
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/agents/{id}/commands/{commandId}/result": {
         parameters: {
             query?: never;
@@ -9615,6 +10151,16 @@ export interface components {
                 /** @description cloudflared container state - running/exited/missing, or unavailable when Docker is unreachable */
                 container?: string;
             };
+            branding?: components["schemas"]["Branding"];
+        };
+        /** @description White-label instance branding. Unset fields fall back to Containr defaults. */
+        Branding: {
+            product_name?: string;
+            logo_url?: string;
+            favicon_url?: string;
+            accent_color?: string;
+            docs_url?: string;
+            support_url?: string;
         };
         User: {
             /** @description User ID */

app/frontend/src/generated/docs-snapshot.ts

@@ -40,7 +40,7 @@ export const bundledDocs: BundledDoc[] = [
     "path": "guides/CLI.md",
     "section": "guides",
     "title": "Containr CLI",
-    "markdown": "# Containr CLI\n\nThe CLI controls every part of a Containr instance — the same API surface\nthe web UI uses. Build it with `scripts/build-cli.sh` or\n`go build ./cmd/cli` from `app/backend`.\n\n## Authentication\n\nCreate a personal access token in the web UI under\n**Settings → Personal Access Tokens** (or `containr tokens create`), then:\n\n```bash\ncontainr auth login cnp_...                      # verify + store\ncontainr auth login cnp_... --url https://containr.example.com\ncontainr auth login cnp_... --name production    # named profile\ncontainr auth status                             # show active profile + identity\ncontainr auth logout\n```\n\nResolution order for every command: `--token`/`--api-url` flags >\n`CONTAINR_TOKEN`/`CONTAINR_API_URL` env > active profile >\n`http://localhost:8080/api/v1`. The active profile is `--profile` >\n`CONTAINR_PROFILE` > `current_profile` in `~/.containr.yaml`.\n\n## Output and scripting\n\n- `--json` prints the raw API response — safe to pipe and parse.\n- `--yes` / `-y` skips confirmation on destructive commands (delete,\n  revoke, restore, failover). Non-interactive shells refuse destructive\n  commands without it.\n- Exit codes are stable: `0` ok, `1` error, `2` auth/permission,\n  `3` not found, `4` validation, `5` unreachable.\n\n## Commands\n\n```\nauth login|logout|status         token auth and profiles\ntokens list|create|revoke        personal access tokens\nprojects list|get|create|delete\nservices list|get|create|update|delete|start|stop|restart|redeploy\nservices clone|move              duplicate config or re-parent a service\nservices domains list|add|remove|default|check   multi-domain + DNS preflight\nregistries list|add|update|remove  private-image pull credentials\nvolumes list|delete              docker volume inventory + cleanup (admin)\ndeploy <service-id>              trigger a deployment (--no-cache, --commit-hash, --branch)\ndeployments list|get|logs|rollback|cancel\nlogs <service-id> [--follow]     runtime logs (SSE follow)\nexec <service-id> -- <cmd>       one-off container command\nvariables list|set|unset         env vars (secrets masked; --redeploy applies them)\nvariables shared list|set|unset  project shared vars — referenced as ${{shared.KEY}}\ndatabases list|get|create|update|delete|action|backup|restore|download-backup|import-backup\n                               import-backup <id> <file.tar.gz|-> uploads an archive as a restore\n                               point; ships offsite too when a backup target is assigned\ndatabases list|get|create|update|delete|action|backup|restore|download-backup\n                               create --public exposes the port on all interfaces;\n                               update <id> --public/--public=false toggles it (container recreates, data persists)\ndatabases register <name>      register an external database (--type --host --port --database --username --password --ssl; probed before storing)\ndatabases test-connection      probe a connection — by id, or ad-hoc flags\nbackup-targets list|add|update|remove|test\n                               S3-compatible archive destinations; add/update probe the bucket\n                               first, empty --access-key/--secret-key on update keep stored keys;\n                               update <db-id> --backup-target assigns a target (\"\" clears it)\ncron list|get|create|delete|trigger|executions\ntemplates list|get|create|delete|deploy|plan|import-compose|deploy-graph\n                               deploy --name --var K=V; plan dry-resolves expressions;\n                               import-compose <compose.yml|-> converts a compose file into\n                               a v2 graph config; deploy-graph <project-id> <config.json|->\n                               deploys an ad-hoc service graph\nimport compose <project-id> <compose.yml|->\n                               deploys a docker-compose file straight into a project —\n                               no template row. DB images become managed databases\n                               attached under their service name; --var K=V overrides\n                               template variables\nnodes list|get|delete|tokens     node agents + onboarding tokens (admin)\nscaling status|policies|services|scale\nha status|alerts|health|policies|enable|disable|failover\nsecurity scan|vulnerabilities|metrics\ngateway services|keys|analytics  (admin)\nadmin overview|users|settings|audit-logs\nnotifications list|read\nwebhooks list|create|update|delete|deliveries|test\n                               outbound signed webhooks — create <name> <url>\n                               --event 'service.*' (repeatable, '*' = all);\n                               deliveries are HMAC-signed (X-Containr-Signature)\noperations                       live ops view: active deploys, queue depth,\n                               24h failures, cron runs, backups\nup                
Line truncated
+    "markdown": "# Containr CLI\n\nThe CLI controls every part of a Containr instance — the same API surface\nthe web UI uses. Build it with `scripts/build-cli.sh` or\n`go build ./cmd/cli` from `app/backend`.\n\n## Authentication\n\nCreate a personal access token in the web UI under\n**Settings → Personal Access Tokens** (or `containr tokens create`), then:\n\n```bash\ncontainr auth login cnp_...                      # verify + store\ncontainr auth login cnp_... --url https://containr.example.com\ncontainr auth login cnp_... --name production    # named profile\ncontainr auth status                             # show active profile + identity\ncontainr auth logout\n```\n\nResolution order for every command: `--token`/`--api-url` flags >\n`CONTAINR_TOKEN`/`CONTAINR_API_URL` env > active profile >\n`http://localhost:8080/api/v1`. The active profile is `--profile` >\n`CONTAINR_PROFILE` > `current_profile` in `~/.containr.yaml`.\n\n## Output and scripting\n\n- `--json` prints the raw API response — safe to pipe and parse.\n- `--yes` / `-y` skips confirmation on destructive commands (delete,\n  revoke, restore, failover). Non-interactive shells refuse destructive\n  commands without it.\n- Exit codes are stable: `0` ok, `1` error, `2` auth/permission,\n  `3` not found, `4` validation, `5` unreachable.\n\n## Commands\n\n```\nauth login|logout|status         token auth and profiles\ntokens list|create|revoke        personal access tokens\nprojects list|get|create|delete\nservices list|get|create|update|delete|start|stop|restart|redeploy\nservices clone|move              duplicate config or re-parent a service\nservices domains list|add|remove|default|check   multi-domain + DNS preflight\nregistries list|add|update|remove  private-image pull credentials\nvolumes list|delete              docker volume inventory + cleanup (admin)\ndeploy <service-id>              trigger a deployment (--no-cache, --commit-hash, --branch)\ndeployments list|get|logs|rollback|cancel\nlogs <service-id> [--follow]     runtime logs (SSE follow)\nexec <service-id> -- <cmd>       one-off container command\nvariables list|set|unset         env vars (secrets masked; --redeploy applies them)\nvariables shared list|set|unset  project shared vars — referenced as ${{shared.KEY}}\ndatabases list|get|create|update|delete|action|backup|restore|download-backup|import-backup\n                               import-backup <id> <file.tar.gz|-> uploads an archive as a restore\n                               point; ships offsite too when a backup target is assigned\ndatabases list|get|create|update|delete|action|backup|restore|download-backup\n                               create --public exposes the port on all interfaces;\n                               update <id> --public/--public=false toggles it (container recreates, data persists)\ndatabases register <name>      register an external database (--type --host --port --database --username --password --ssl; probed before storing)\ndatabases test-connection      probe a connection — by id, or ad-hoc flags\nbackup-targets list|add|update|remove|test\n                               S3-compatible archive destinations; add/update probe the bucket\n                               first, empty --access-key/--secret-key on update keep stored keys;\n                               update <db-id> --backup-target assigns a target (\"\" clears it)\ncron list|get|create|delete|trigger|executions\ntemplates list|get|create|delete|deploy|plan|import-compose|deploy-graph\n                               deploy --name --var K=V; plan dry-resolves expressions;\n                               import-compose <compose.yml|-> converts a compose file into\n                               a v2 graph config; deploy-graph <project-id> <config.json|->\n                               deploys an ad-hoc service graph\nimport compose <project-id> <compose.yml|->\n                               deploys a docker-compose file straight into a project —\n                               no template row. DB images become managed databases\n                               attached under their service name; --var K=V overrides\n                               template variables\nnodes list|get|delete|tokens     node agents + onboarding tokens (admin)\nscaling status|policies|services|scale\nha status|alerts|health|policies|enable|disable|failover\nsecurity scan|vulnerabilities|metrics\ngateway services|keys|analytics  (admin)\nadmin overview|users|settings|audit-logs\nnotifications list|read\nwebhooks list|create|update|delete|deliveries|test\n                               outbound signed webhooks — create <name> <url>\n                               --event 'service.*' (repeatable, '*' = all);\n                               deliveries are HMAC-signed (X-Containr-Signature)\noperations                       live ops view: active deploys, queue depth,\n                               24h failures, cron runs, backups\nbanners list|creatLine truncated
   },
   {
     "path": "guides/CLOUDFLARE_SETUP.md",

app/frontend/src/lib/api-client.ts

@@ -24,6 +24,24 @@ export type UserProfile = {
   updatedAt?: string;
 };
 
+export type Branding = {
+  productName: string;
+  logoUrl: string;
+  faviconUrl: string;
+  accentColor: string;
+  docsUrl: string;
+  supportUrl: string;
+};
+
+export type BrandingInput = Partial<{
+  productName: string;
+  logoUrl: string;
+  faviconUrl: string;
+  accentColor: string;
+  docsUrl: string;
+  supportUrl: string;
+}>;
+
 export type PlatformSettings = {
   signupEnabled: boolean;
   cloudflareTunnel: {
@@ -31,6 +49,7 @@ export type PlatformSettings = {
     source: 'app' | 'env' | 'none';
     container: string;
   };
+  branding: Branding;
 };
 
 export type ServiceEntity = {
@@ -542,6 +561,37 @@ function normalizeUserProfile(profile: RawUserProfile): UserProfile | null {
   };
 }
 
+function normalizeBranding(raw: {
+  product_name?: string;
+  logo_url?: string;
+  favicon_url?: string;
+  accent_color?: string;
+  docs_url?: string;
+  support_url?: string;
+} | undefined | null): Branding {
+  return {
+    productName: raw?.product_name ?? 'Containr',
+    logoUrl: raw?.logo_url ?? '',
+    faviconUrl: raw?.favicon_url ?? '',
+    accentColor: raw?.accent_color ?? '',
+    docsUrl: raw?.docs_url ?? '',
+    supportUrl: raw?.support_url ?? '',
+  };
+}
+
+// GET /branding is public — used before login to theme the shell.
+export async function getBranding(): Promise<Branding> {
+  const raw = await requestJson<{
+    product_name?: string;
+    logo_url?: string;
+    favicon_url?: string;
+    accent_color?: string;
+    docs_url?: string;
+    support_url?: string;
+  }>('/branding');
+  return normalizeBranding(raw);
+}
+
 function normalizePlatformSettings(raw: components['schemas']['PlatformSettings']): PlatformSettings {
   return {
     signupEnabled: raw.signup_enabled ?? false,
@@ -550,6 +600,7 @@ function normalizePlatformSettings(raw: components['schemas']['PlatformSettings'
       source: raw.cloudflare_tunnel?.source ?? 'none',
       container: raw.cloudflare_tunnel?.container ?? 'missing',
     },
+    branding: normalizeBranding(raw.branding),
   };
 }
 
@@ -561,6 +612,7 @@ export async function getPlatformSettings(): Promise<PlatformSettings> {
 export async function updatePlatformSettings(input: {
   signupEnabled?: boolean;
   cloudflareTunnelToken?: string;
+  branding?: BrandingInput;
 }): Promise<PlatformSettings> {
   const body: Record<string, unknown> = {};
   if (input.signupEnabled !== undefined) {
@@ -569,6 +621,16 @@ export async function updatePlatformSettings(input: {
   if (input.cloudflareTunnelToken !== undefined) {
     body.cloudflare_tunnel_token = input.cloudflareTunnelToken;
   }
+  if (input.branding !== undefined) {
+    const b: Record<string, string> = {};
+    if (input.branding.productName !== undefined) b.product_name = input.branding.productName;
+    if (input.branding.logoUrl !== undefined) b.logo_url = input.branding.logoUrl;
+    if (input.branding.faviconUrl !== undefined) b.favicon_url = input.branding.faviconUrl;
+    if (input.branding.accentColor !== undefined) b.accent_color = input.branding.accentColor;
+    if (input.branding.docsUrl !== undefined) b.docs_url = input.branding.docsUrl;
+    if (input.branding.supportUrl !== undefined) b.support_url = input.branding.supportUrl;
+    body.branding = b;
+  }
   const raw = await requestJson<components['schemas']['PlatformSettings']>('/settings', {
     method: 'PUT',
     body: JSON.stringify(body),
@@ -1910,6 +1972,55 @@ export async function deleteBanner(id: string): Promise<void> {
   await requestJson(`/admin/banners/${id}`, { method: 'DELETE' });
 }
 
+export type Invite = {
+  id: string;
+  email?: string;
+  expires_at: string;
+  used_at?: string;
+  created_at?: string;
+};
+
+export type InviteState = {
+  valid: boolean;
+  used: boolean;
+  expired: boolean;
+  email?: string | null;
+  expires_at: string;
+};
+
+export async function getInvite(token: string): Promise<InviteState> {
+  return requestJson<InviteState>(`/auth/invites/${token}`);
+}
+
+export async function acceptInvite(input: {
+  token: string;
+  name: string;
+  email: string;
+  password: string;
+}): Promise<void> {
+  await requestJson('/auth/accept-invite', { method: 'POST', body: JSON.stringify(input) });
+}
+
+export async function listInvites(): Promise<Invite[]> {
+  const payload = await requestJson<{ invites?: Invite[] }>('/admin/invites');
+  return payload.invites ?? [];
+}
+
+export async function createInvite(input: { email?: string; expiresInHours?: number }): Promise<{
+  invite: Invite;
+  token: string;
+  url: string;
+}> {
+  const body: Record<string, unknown> = {};
+  if (input.email) body.email = input.email;
+  if (input.expiresInHours) body.expires_in_hours = input.expiresInHours;
+  return requestJson('/admin/invites', { method: 'POST', body: JSON.stringify(body) });
+}
+
+export async function revokeInvite(id: string): Promise<void> {
+  await requestJson(`/admin/invites/${id}`, { method: 'DELETE' });
+}
+
 export function serviceStatusClass(status: ServiceStatus): string {
   switch (status) {
     case 'running':
@@ -2147,6 +2258,36 @@ export async function getGitHubAppInstallUrl(): Promise<string> {
   return payload.install_url;
 }
 
+export type GitHubAppStatus = {
+  configured: boolean;
+  source: 'env' | 'settings' | 'none';
+  app_id?: string;
+  slug?: string;
+  name?: string;
+};
+
+export async function getGitHubAppStatus(): Promise<GitHubAppStatus> {
+  return requestJson<GitHubAppStatus>('/admin/git/github-app');
+}
+
+export async function createGitHubAppManifest(input: {
+  base_url: string;
+  name?: string;
+  organization?: string;
+}): Promise<{ url: string; manifest: string; state: string }> {
+  return requestJson('/admin/git/github-app/manifest', {
+    method: 'POST',
+    body: JSON.stringify(input),
+  });
+}
+
+export async function convertGitHubAppCode(code: string): Promise<{ app_id: number; slug: string; name: string }> {
+  return requestJson('/admin/git/github-app/convert', {
+    method: 'POST',
+    body: JSON.stringify({ code }),
+  });
+}
+
 export async function connectGitHubApp(installationId: number, displayName?: string): Promise<GitProviderEntity> {
   const payload = await requestJson<{ provider?: GitProviderEntity }>('/git/github-app/connect', {
     method: 'POST',
@@ -2511,6 +2652,18 @@ export async function listAdminUsers(): Promise<AdminUser[]> {
   return payload.users ?? [];
 }
 
+export type ImpersonationResult = {
+  token: string;
+  expires_at: string;
+  user: { id: string; email: string; name: string };
+};
+
+export async function impersonateUser(userId: string): Promise<ImpersonationResult> {
+  return requestJson<ImpersonationResult>(`/admin/users/${encodeURIComponent(userId)}/impersonate`, {
+    method: 'POST',
+  });
+}
+
 export async function setUserAdmin(userId: string, isAdmin: boolean): Promise<void> {
   await requestJson(`/admin/users/${encodeURIComponent(userId)}`, {
     method: 'PATCH',

app/frontend/src/lib/use-branding.ts

@@ -0,0 +1,54 @@
+import { useEffect } from 'react';
+import { useQuery } from '@tanstack/react-query';
+import { getBranding, type Branding } from '@/lib/api-client';
+import { useDemoMode } from '@/lib/demo-mode';
+
+const DEFAULT_TITLE = 'containr';
+
+/**
+ * Loads the instance's white-label branding (public endpoint) and applies
+ * it: document title, favicon, and the accent CSS variable. Defaults keep
+ * the app Containr-branded.
+ */
+export function useBranding(): Branding {
+  const isDemoMode = useDemoMode();
+  const brandingQuery = useQuery({
+    queryKey: ['branding'],
+    queryFn: getBranding,
+    staleTime: 5 * 60_000,
+    enabled: !isDemoMode,
+  });
+
+  const branding = brandingQuery.data ?? {
+    productName: 'Containr',
+    logoUrl: '',
+    faviconUrl: '',
+    accentColor: '',
+    docsUrl: '',
+    supportUrl: '',
+  };
+
+  useEffect(() => {
+    const name = branding.productName;
+    document.title = name && name !== 'Containr' ? name : DEFAULT_TITLE;
+
+    const root = document.documentElement;
+    if (branding.accentColor && /^#[0-9a-fA-F]{3,8}$/.test(branding.accentColor)) {
+      root.style.setProperty('--accent-primary', branding.accentColor);
+    } else {
+      root.style.removeProperty('--accent-primary');
+    }
+
+    if (branding.faviconUrl) {
+      let link = document.querySelector<HTMLLinkElement>('link[rel="icon"]');
+      if (!link) {
+        link = document.createElement('link');
+        link.rel = 'icon';
+        document.head.appendChild(link);
+      }
+      link.href = branding.faviconUrl;
+    }
+  }, [branding.productName, branding.accentColor, branding.faviconUrl]);
+
+  return branding;
+}

app/frontend/src/shared/components/BrandWordmark.tsx

@@ -0,0 +1,28 @@
+import { useBranding } from '@/lib/use-branding';
+
+/**
+ * Instance wordmark — renders the configured logo when set, otherwise the
+ * product name with the signature accent on the last character
+ * ("contain[r]"). Falls back to Containr branding.
+ */
+export function BrandWordmark({ className = '' }: { className?: string }) {
+  const branding = useBranding();
+
+  if (branding.logoUrl) {
+    return (
+      <img
+        src={branding.logoUrl}
+        alt={branding.productName}
+        className={`h-6 w-auto object-contain ${className}`}
+      />
+    );
+  }
+
+  const name = branding.productName;
+  return (
+    <span className={className}>
+      {name.slice(0, -1)}
+      <span style={{ color: 'var(--accent-primary)' }}>{name.slice(-1)}</span>
+    </span>
+  );
+}

app/frontend/src/shared/components/index.ts

@@ -10,3 +10,4 @@ export * from './CommandPalette';
 export * from './StatusBadge';
 export { useToast } from '../hooks/use-toast';
 export type { ToastType, ToastContextValue } from '../hooks/use-toast';
+export * from './BrandWordmark';

docs/api/openapi.yaml

@@ -1791,6 +1791,45 @@ paths:
                   message:
                     type: string
 
+  /admin/users/{id}/impersonate:
+    post:
+      tags:
+        - Admin
+      summary: Impersonate a user
+      description: >-
+        Mint a 15-minute bearer token acting as the target user. Admin-only;
+        admin accounts cannot be impersonated and every mint is audit-logged.
+        The token carries an `impersonated_by` claim.
+      security:
+        - bearerAuth: []
+      parameters:
+        - name: id
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Impersonation token
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  token:
+                    type: string
+                  expires_at:
+                    type: string
+                    format: date-time
+                  user:
+                    type: object
+                    properties:
+                      id: {type: string}
+                      email: {type: string}
+                      name: {type: string}
+        '403':
+          description: Target is an admin account
+
   /admin/projects/{id}:
     patch:
       tags:
@@ -2702,6 +2741,130 @@ paths:
         '204':
           description: Deleted
 
+  /auth/invites/{token}:
+    get:
+      tags:
+        - Invites
+      summary: Validate an invite token (public)
+      responses:
+        '200':
+          description: Invite state
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  valid: {type: boolean}
+                  used: {type: boolean}
+                  expired: {type: boolean}
+                  email: {type: string, nullable: true}
+                  expires_at: {type: string, format: date-time}
+        '404':
+          description: Invite not found
+
+  /auth/accept-invite:
+    post:
+      tags:
+        - Invites
+      summary: Register via an invite link (public)
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [token, name, email, password]
+              properties:
+                token: {type: string}
+                name: {type: string}
+                email: {type: string}
+                password: {type: string, minLength: 8}
+      responses:
+        '201':
+          description: Created session
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/LoginResponse'
+        '410':
+          description: Invite used or expired
+
+  /admin/invites:
+    get:
+      tags:
+        - Invites
+      summary: List invites (admin)
+      security:
+        - bearerAuth: []
+      responses:
+        '200':
+          description: All invites
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  invites:
+                    type: array
+                    items:
+                      type: object
+    post:
+      tags:
+        - Invites
+      summary: Create an invite link (admin)
+      security:
+        - bearerAuth: []
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                email: {type: string, description: Optionally bind the invite to this email}
+                expires_in_hours: {type: integer, default: 168, minimum: 1, maximum: 2160}
+      responses:
+        '201':
+          description: Created invite with one-time token
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  invite: {type: object}
+                  token: {type: string, description: Shown once}
+                  url: {type: string}
+
+  /admin/invites/{id}:
+    delete:
+      tags:
+        - Invites
+      summary: Revoke an invite (admin)
+      security:
+        - bearerAuth: []
+      parameters:
+        - {name: id, in: path, required: true, schema: {type: string}}
+      responses:
+        '204':
+          description: Revoked
+
+  /branding:
+    get:
+      tags:
+        - Branding
+      summary: White-label branding (public)
+      description: |
+        Instance branding payload — product name, logo/favicon URLs,
+        accent color, docs/support links. Unauthenticated so the login
+        page and shell can brand themselves before a session exists.
+        Unset fields return Containr defaults.
+      responses:
+        '200':
+          description: Branding configuration
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Branding'
+
   # Audit Logs
   /audit-logs:
     get:
@@ -3325,6 +3488,16 @@ paths:
                 cloudflare_tunnel_token:
                   type: string
                   description: Cloudflare Tunnel token. Empty string clears the stored token and removes the cloudflared container.
+                branding:
+                  type: object
+                  description: White-label fields. Empty string clears a field back to the Containr default.
+                  properties:
+                    product_name: {type: string}
+                    logo_url: {type: string}
+                    favicon_url: {type: string}
+                    accent_color: {type: string}
+                    docs_url: {type: string}
+                    support_url: {type: string}
       responses:
         '200':
           description: Updated platform settings
@@ -3596,6 +3769,93 @@ paths:
               schema:
                 $ref: '#/components/schemas/Error'
 
+  /admin/git/github-app:
+    get:
+      tags:
+        - Admin
+      summary: GitHub App provisioning status
+      description: Shows whether the instance GitHub App is configured, and whether credentials come from app_settings or environment variables.
+      security:
+        - bearerAuth: []
+      responses:
+        '200':
+          description: Provisioning status
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  configured: {type: boolean}
+                  source: {type: string, enum: [settings, env, none]}
+                  app_id: {type: string}
+                  slug: {type: string}
+                  name: {type: string}
+
+  /admin/git/github-app/manifest:
+    post:
+      tags:
+        - Admin
+      summary: Build GitHub App manifest
+      description: >-
+        Returns a GitHub App manifest for self-provisioning. The client POSTs
+        `manifest` verbatim as a form field to `url`; GitHub then redirects to
+        the instance's /git/github-app/callback with a code.
+      security:
+        - bearerAuth: []
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [base_url]
+              properties:
+                base_url: {type: string, description: Public https base URL of this instance}
+                name: {type: string}
+                organization: {type: string, description: Create the app under this GitHub organization}
+      responses:
+        '200':
+          description: Manifest + submission URL
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  url: {type: string}
+                  manifest: {type: string, description: JSON string — POST as form field `manifest`}
+                  state: {type: string}
+
+  /admin/git/github-app/convert:
+    post:
+      tags:
+        - Admin
+      summary: Exchange manifest callback code
+      description: Exchanges the `code` from the manifest redirect for the app credentials and stores them in app_settings (overriding env vars).
+      security:
+        - bearerAuth: []
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [code]
+              properties:
+                code: {type: string}
+      responses:
+        '200':
+          description: App provisioned
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  app_id: {type: integer}
+                  slug: {type: string}
+                  name: {type: string}
+        '502':
+          description: GitHub conversion failed
+
   /git/providers/{providerId}:
     delete:
       tags:
@@ -5191,6 +5451,45 @@ paths:
               schema:
                 $ref: '#/components/schemas/Error'
 
+  /api/git/github-app/webhook:
+    servers:
+      - url: http://localhost:8080
+    post:
+      tags:
+        - Git
+      summary: GitHub App webhook receiver
+      description: >-
+        Single app-level webhook all installed repositories deliver to
+        (configured via the manifest's hook_attributes). Verified with
+        X-Hub-Signature-256 against the provisioned webhook secret. Push
+        events enqueue deployments for services tracking the repo+branch.
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+      responses:
+        '202':
+          description: Event accepted
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  received:
+                    type: boolean
+                  branch:
+                    type: string
+                  deployments:
+                    type: integer
+                  ignored:
+                    type: string
+        '401':
+          description: Invalid signature
+        '503':
+          description: GitHub App webhook secret not configured
+
   /api/agents/{id}/commands/{commandId}/result:
     servers:
       - url: http://localhost:8080
@@ -6090,6 +6389,25 @@ components:
             container:
               type: string
               description: cloudflared container state - running/exited/missing, or unavailable when Docker is unreachable
+        branding:
+          $ref: '#/components/schemas/Branding'
+
+    Branding:
+      type: object
+      description: White-label instance branding. Unset fields fall back to Containr defaults.
+      properties:
+        product_name:
+          type: string
+        logo_url:
+          type: string
+        favicon_url:
+          type: string
+        accent_color:
+          type: string
+        docs_url:
+          type: string
+        support_url:
+          type: string
 
     User:
       type: object

docs/guides/CLI.md

@@ -86,6 +86,11 @@ operations                       live ops view: active deploys, queue depth,
                                24h failures, cron runs, backups
 banners list|create|update|delete  announcement banners (admin);
                                active banners print on `auth status`
+invites list|create|revoke       team invite links (admin); create
+                               prints the one-time acceptance URL
+admin impersonate <id>           mint a 15-min token acting as a user
+admin github-app status|manifest|convert
+                               self-provision the instance GitHub App
 up                               deploy the current directory
 ```