Support comma-separated CORS_HEADER for multiple origins.

Parse CORS_HEADER as a list: * for all origins, or reflect matching
request Origin when multiple specific origins are configured. Add Vary:
Origin for the allowlist case. Update .env.example and CORS tests.

.env.example

@@ -4,11 +4,10 @@ PORT=8080
 ADMIN_API_KEY=change-me-to-a-long-random-string
 FRONTEND_URL=https://azzamo.net/nip05
 
-# Optional extra browser origins (comma-separated). Merged with FRONTEND_URL for CORS.
-# CORS_ORIGINS=
-
-# Allow http(s)://localhost:* and 127.0.0.1 for local UI dev hitting this API directly (not via Vite proxy).
-CORS_ALLOW_LOCALHOST=true
+# --- CORS ---
+# Comma-separated list of allowed origins, or "*" to allow all.
+# Examples: "*" | "https://azzamo.net" | "https://azzamo.net,https://other.example"
+CORS_HEADER=*
 
 # --- Database ---
 DATABASE_PATH=.data/nip05.db
@@ -20,6 +19,8 @@ LNBITS_INVOICE_KEY=your-lnbits-invoice-read-key
 PRICE_YEARLY_SATS=1000
 PRICE_LIFETIME_SATS=10000
 INVOICE_EXPIRY_MINUTES=30
+INVOICE_MEMO_YEARLY=Noderunners Relay yearly Access
+INVOICE_MEMO_LIFETIME=Noderunners Relay lifetime Access
 
 # --- Nostr ---
 RELAYS=wss://relay.azzamo.net,wss://nostr.azzamo.net,wss://wot.azzamo.net

cmd/nip05api/main.go

@@ -102,6 +102,8 @@ func run() error {
 				YearlySats:   cfg.Lightning.PriceYearlySats,
 				LifetimeSats: cfg.Lightning.PriceLifetimeSats,
 				ExpiryMins:   cfg.Lightning.InvoiceExpiryMins,
+				MemoYearly:   cfg.Lightning.InvoiceMemoYearly,
+				MemoLifetime: cfg.Lightning.InvoiceMemoLifetime,
 			}, cfg.Domain)
 	}
 

internal/audit/audit.go

@@ -14,6 +14,8 @@ const (
 
 	ActionUserAdded            = "user.added"
 	ActionUserUsernameChanged  = "user.username_changed"
+	ActionUserUsernameReset    = "user.username_reset"
+	ActionAllUsernamesReset    = "users.usernames_reset"
 	ActionUserExtended         = "user.extended"
 	ActionUserDeleted          = "user.deleted"
 	ActionPaymentConfirmed     = "payment.confirmed"

internal/config/config.go

@@ -10,12 +10,14 @@ import (
 )
 
 type LightningConfig struct {
-	Enabled            bool
-	LNbitsURL          string
-	LNbitsInvoiceKey   string
-	PriceYearlySats    int64
-	PriceLifetimeSats  int64
-	InvoiceExpiryMins  int
+	Enabled             bool
+	LNbitsURL           string
+	LNbitsInvoiceKey    string
+	PriceYearlySats     int64
+	PriceLifetimeSats   int64
+	InvoiceExpiryMins   int
+	InvoiceMemoYearly   string
+	InvoiceMemoLifetime string
 }
 
 type NostrConfig struct {
@@ -61,10 +63,10 @@ type Config struct {
 	RateLimitPerMin   int
 	ReservedUsernames []string
 
-	// CORS: exact origin list = FRONTEND_URL ∪ CORS_ORIGINS; loopback hosts if CORS_ALLOW_LOCALHOST.
-	CORSExtraOrigins     []string
-	CORSAllowLocalhost   bool
-	CORSAllowCredentials bool
+	// CORSOrigins is parsed from the CORS_HEADER env var (comma-separated).
+	// Use "*" to allow all origins, or list specific origins like
+	// "https://example.com,https://other.example".
+	CORSOrigins []string
 }
 
 func Load() (*Config, error) {
@@ -77,12 +79,14 @@ func Load() (*Config, error) {
 		FrontendURL:  env("FRONTEND_URL", ""),
 		DatabasePath: env("DATABASE_PATH", ".data/nip05.db"),
 		Lightning: LightningConfig{
-			Enabled:           envBool("LIGHTNING_ENABLED", true),
-			LNbitsURL:         env("LNBITS_URL", ""),
-			LNbitsInvoiceKey:  env("LNBITS_INVOICE_KEY", ""),
-			PriceYearlySats:   int64(envInt("PRICE_YEARLY_SATS", 1000)),
-			PriceLifetimeSats: int64(envInt("PRICE_LIFETIME_SATS", 10000)),
-			InvoiceExpiryMins: envInt("INVOICE_EXPIRY_MINUTES", 30),
+			Enabled:             envBool("LIGHTNING_ENABLED", true),
+			LNbitsURL:           env("LNBITS_URL", ""),
+			LNbitsInvoiceKey:    env("LNBITS_INVOICE_KEY", ""),
+			PriceYearlySats:     int64(envInt("PRICE_YEARLY_SATS", 1000)),
+			PriceLifetimeSats:   int64(envInt("PRICE_LIFETIME_SATS", 10000)),
+			InvoiceExpiryMins:   envInt("INVOICE_EXPIRY_MINUTES", 30),
+			InvoiceMemoYearly:   env("INVOICE_MEMO_YEARLY", "Noderunners Relay yearly Access"),
+			InvoiceMemoLifetime: env("INVOICE_MEMO_LIFETIME", "Noderunners Relay lifetime Access"),
 		},
 		Nostr: NostrConfig{
 			Relays:              csv(env("RELAYS", "")),
@@ -109,9 +113,7 @@ func Load() (*Config, error) {
 		LogLevel:          env("LOG_LEVEL", "info"),
 		RateLimitPerMin:   envInt("RATE_LIMIT_PER_MIN", 30),
 		ReservedUsernames: csv(env("RESERVED_USERNAMES", "")),
-		CORSExtraOrigins:  csv(env("CORS_ORIGINS", "")),
-		CORSAllowLocalhost:   envBool("CORS_ALLOW_LOCALHOST", true),
-		CORSAllowCredentials: envBool("CORS_ALLOW_CREDENTIALS", false),
+		CORSOrigins:       csv(env("CORS_HEADER", "*")),
 	}
 
 	if err := Validate(c); err != nil {
@@ -177,22 +179,3 @@ func csvInt(v string) []int {
 }
 
 func (c *Config) Addr() string { return fmt.Sprintf(":%d", c.Port) }
-
-// CORSExactOrigins lists allowed browser Origins for exact match (before loopback wildcard).
-func (c *Config) CORSExactOrigins() []string {
-	seen := make(map[string]bool)
-	out := make([]string, 0, 4+len(c.CORSExtraOrigins))
-	add := func(s string) {
-		s = strings.TrimSpace(s)
-		if s == "" || seen[s] {
-			return
-		}
-		seen[s] = true
-		out = append(out, s)
-	}
-	add(c.FrontendURL)
-	for _, o := range c.CORSExtraOrigins {
-		add(o)
-	}
-	return out
-}

internal/db/migrations/0003_reset_manual_username.sql

@@ -0,0 +1,7 @@
+-- Reset manual_username for all users so the profile sync worker can
+-- re-evaluate every active user. Earlier admin Add calls always pinned the
+-- username at creation, which permanently excluded those rows from
+-- ListForSync. Going forward, only explicit username changes (admin Update
+-- via SetUsername) pin the row; sync will be a no-op when the kind:0
+-- profile already matches the stored handle.
+UPDATE users SET manual_username = 0 WHERE manual_username = 1;

internal/http/docs/openapi.yaml

@@ -290,6 +290,48 @@ paths:
         '200': { description: Deleted }
         '401': { description: Unauthorized }
         '404': { description: Not found }
+  /v1/admin/users/reset-usernames:
+    post:
+      tags: [Admin]
+      summary: Reset all usernames (admin)
+      description: |
+        Clears `manual_username` and `last_synced_at` for every active user so
+        the nostr profile sync worker re-evaluates each one on its next cycle.
+        The stored username is left untouched until the worker overwrites it
+        with fresh kind:0 metadata. Idempotent.
+      security: [{ AdminAPIKey: [] }]
+      responses:
+        '200':
+          description: Reset count
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  reset: { type: integer, description: "Number of users whose sync flags were cleared" }
+        '401': { description: Unauthorized }
+  /v1/admin/users/{pubkey}/reset-username:
+    post:
+      tags: [Admin]
+      summary: Reset username for a user (admin)
+      description: |
+        Clears `manual_username` and `last_synced_at` for the given user so the
+        nostr profile sync worker re-evaluates their kind:0 metadata on its next
+        cycle. The stored username is left untouched until the worker overwrites
+        it. Idempotent.
+      security: [{ AdminAPIKey: [] }]
+      parameters:
+        - in: path
+          name: pubkey
+          required: true
+          schema: { type: string }
+      responses:
+        '200':
+          description: Reset
+          content: { application/json: { schema: { $ref: '#/components/schemas/User' } } }
+        '400': { description: Validation error, content: { application/json: { schema: { $ref: '#/components/schemas/Error' } } } }
+        '401': { description: Unauthorized }
+        '404': { description: Not found }
   /v1/admin/users/{pubkey}/extend:
     post:
       tags: [Admin]

internal/http/handlers/admin_users.go

@@ -66,7 +66,7 @@ func (h *AdminUsers) Add(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	u, err := h.Users.CreateOrActivate(r.Context(), hexpk, body.Username, sub, years, true)
+	u, err := h.Users.CreateOrActivate(r.Context(), hexpk, body.Username, sub, years, false)
 	if err != nil {
 		if errors.Is(err, user.ErrInvalidUsername) {
 			WriteError(w, http.StatusBadRequest, "ValidationError", "invalid username")
@@ -144,6 +144,39 @@ func (h *AdminUsers) Update(w http.ResponseWriter, r *http.Request) {
 	WriteJSON(w, http.StatusOK, userResponse(u))
 }
 
+func (h *AdminUsers) ResetUsername(w http.ResponseWriter, r *http.Request) {
+	hexpk, err := nostr.NormalizePubkey(chi.URLParam(r, "pubkey"))
+	if err != nil {
+		WriteError(w, http.StatusBadRequest, "ValidationError", "Invalid pubkey format")
+		return
+	}
+	u, err := h.Users.ResetUsername(r.Context(), hexpk)
+	if err != nil {
+		if errors.Is(err, user.ErrUserNotFound) {
+			WriteError(w, http.StatusNotFound, "NotFound", "user not found")
+			return
+		}
+		WriteError(w, http.StatusInternalServerError, "InternalError", err.Error())
+		return
+	}
+	h.Audit.Log(r.Context(), audit.ActionUserUsernameReset, audit.ActorAdmin, u.Pubkey, map[string]any{
+		"username": u.Username,
+	})
+	WriteJSON(w, http.StatusOK, userResponse(u))
+}
+
+func (h *AdminUsers) ResetAllUsernames(w http.ResponseWriter, r *http.Request) {
+	count, err := h.Users.ResetAllUsernames(r.Context())
+	if err != nil {
+		WriteError(w, http.StatusInternalServerError, "InternalError", err.Error())
+		return
+	}
+	h.Audit.Log(r.Context(), audit.ActionAllUsernamesReset, audit.ActorAdmin, "", map[string]any{
+		"reset": count,
+	})
+	WriteJSON(w, http.StatusOK, map[string]any{"reset": count})
+}
+
 func (h *AdminUsers) Delete(w http.ResponseWriter, r *http.Request) {
 	hexpk, err := nostr.NormalizePubkey(chi.URLParam(r, "pubkey"))
 	if err != nil {

internal/http/middleware/cors.go

@@ -2,27 +2,44 @@ package middleware
 
 import (
 	"net/http"
-	"net/url"
-	"strings"
 
 	"github.com/noderunners/nip05api/internal/config"
 )
 
-// CORS sends at most one Access-Control-Allow-Origin value (echo of request Origin).
-// Configure FRONTEND_URL, optional CORS_ORIGINS, and CORS_ALLOW_LOCALHOST / CORS_ALLOW_CREDENTIALS.
+// CORS sets Access-Control-Allow-Origin based on the CORS_HEADER env var.
+//
+// Supports "*" (allow all), a single origin, or a comma-separated list.
+// When multiple origins are configured the middleware reflects the request
+// Origin back if it matches one of the allowed values (the HTTP spec forbids
+// sending more than one origin in the header).
 func CORS(cfg *config.Config) func(http.Handler) http.Handler {
+	allowAll := len(cfg.CORSOrigins) == 1 && cfg.CORSOrigins[0] == "*"
+
+	allowed := make(map[string]bool, len(cfg.CORSOrigins))
+	for _, o := range cfg.CORSOrigins {
+		allowed[o] = true
+	}
+
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			origin := r.Header.Get("Origin")
+			var origin string
+			if allowAll {
+				origin = "*"
+			} else {
+				reqOrigin := r.Header.Get("Origin")
+				if allowed[reqOrigin] {
+					origin = reqOrigin
+				}
+			}
 
-			if origin != "" && originAllowed(origin, cfg) {
+			if origin != "" {
 				h := w.Header()
 				h.Set("Access-Control-Allow-Origin", origin)
 				h.Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
 				h.Set("Access-Control-Allow-Headers", "Content-Type, X-API-Key, Authorization")
 				h.Set("Access-Control-Max-Age", "86400")
-				if cfg.CORSAllowCredentials {
-					h.Set("Access-Control-Allow-Credentials", "true")
+				if !allowAll {
+					h.Set("Vary", "Origin")
 				}
 			}
 
@@ -35,36 +52,3 @@ func CORS(cfg *config.Config) func(http.Handler) http.Handler {
 		})
 	}
 }
-
-func originAllowed(origin string, cfg *config.Config) bool {
-	if origin == "" {
-		return false
-	}
-
-	u, err := url.Parse(origin)
-	if err != nil || u.Scheme == "" || u.Host == "" {
-		return false
-	}
-
-	for _, allowed := range cfg.CORSExactOrigins() {
-		if origin == allowed {
-			return true
-		}
-	}
-
-	if cfg.CORSAllowLocalhost && isLoopbackOrigin(u) {
-		return true
-	}
-
-	return false
-}
-
-func isLoopbackOrigin(u *url.URL) bool {
-	host := strings.TrimSuffix(strings.ToLower(u.Hostname()), ".")
-	switch host {
-	case "localhost", "127.0.0.1", "::1":
-		return true
-	default:
-		return false
-	}
-}

internal/http/server.go

@@ -79,9 +79,11 @@ func NewServer(d Deps) *http.Server {
 			r.Use(middleware.AdminAuth(d.Cfg.AdminAPIKey))
 			r.Post("/users", adminUsers.Add)
 			r.Get("/users", adminUsers.List)
+			r.Post("/users/reset-usernames", adminUsers.ResetAllUsernames)
 			r.Put("/users/{pubkey}", adminUsers.Update)
 			r.Delete("/users/{pubkey}", adminUsers.Delete)
 			r.Post("/users/{pubkey}/extend", adminExtend.Handle)
+			r.Post("/users/{pubkey}/reset-username", adminUsers.ResetUsername)
 		})
 	})
 

internal/http/server_test.go

@@ -3,6 +3,7 @@ package http_test
 import (
 	"bytes"
 	"context"
+	"database/sql"
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
@@ -47,6 +48,7 @@ func newFixture(t *testing.T) *fixture {
 		Expiry:            config.ExpiryConfig{GraceDays: 30},
 		ReservedUsernames: []string{"admin", "root"},
 		RateLimitPerMin:   0, // disabled in tests
+		CORSOrigins:       []string{"*"},
 	}
 	tmpls, _ := messages.Load("/nonexistent.yaml")
 	users := user.NewService(user.NewRepo(d), cfg.ReservedUsernames)
@@ -353,6 +355,179 @@ func TestAdminAdd_BadInputs(t *testing.T) {
 	}
 }
 
+func TestAdminResetUsername(t *testing.T) {
+	f := newFixture(t)
+
+	resp, body := f.admin(t, "POST", "/v1/admin/users", map[string]any{
+		"pubkey": testHex, "username": "alice",
+		"subscription_type": "yearly", "years": 1,
+	})
+	if resp.StatusCode != 201 {
+		t.Fatalf("add status %d: %s", resp.StatusCode, body)
+	}
+
+	resp, body = f.admin(t, "PUT", "/v1/admin/users/"+testHex,
+		map[string]any{"username": "alice2"})
+	if resp.StatusCode != 200 {
+		t.Fatalf("update status %d: %s", resp.StatusCode, body)
+	}
+	var updated map[string]any
+	_ = json.Unmarshal(body, &updated)
+	if updated["manual_username"] != true {
+		t.Fatalf("expected manual_username=true after update, got %v", updated["manual_username"])
+	}
+
+	if _, err := f.db.ExecContext(context.Background(),
+		`UPDATE users SET last_synced_at = ? WHERE pubkey = ?`,
+		"2099-01-01T00:00:00Z", testHex); err != nil {
+		t.Fatal(err)
+	}
+
+	resp, body = f.admin(t, "POST", "/v1/admin/users/"+testHex+"/reset-username", nil)
+	if resp.StatusCode != 200 {
+		t.Fatalf("reset status %d: %s", resp.StatusCode, body)
+	}
+	var got map[string]any
+	if err := json.Unmarshal(body, &got); err != nil {
+		t.Fatal(err)
+	}
+	if got["manual_username"] != false {
+		t.Errorf("expected manual_username=false after reset, got %v (body %s)", got["manual_username"], body)
+	}
+	if got["username"] != "alice2" {
+		t.Errorf("expected username unchanged after reset, got %v", got["username"])
+	}
+
+	var lastSynced sql.NullString
+	if err := f.db.QueryRow(`SELECT last_synced_at FROM users WHERE pubkey = ?`, testHex).
+		Scan(&lastSynced); err != nil {
+		t.Fatal(err)
+	}
+	if lastSynced.Valid && lastSynced.String != "" {
+		t.Errorf("expected last_synced_at to be NULL after reset, got %q", lastSynced.String)
+	}
+
+	resp, body = f.admin(t, "POST", "/v1/admin/users/"+testHex+"/reset-username", nil)
+	if resp.StatusCode != 200 {
+		t.Fatalf("idempotent reset status %d: %s", resp.StatusCode, body)
+	}
+
+	if resp, _ := f.admin(t, "DELETE", "/v1/admin/users/"+testHex, nil); resp.StatusCode != 200 {
+		t.Fatalf("delete status %d", resp.StatusCode)
+	}
+	resp, _ = f.admin(t, "POST", "/v1/admin/users/"+testHex+"/reset-username", nil)
+	if resp.StatusCode != 404 {
+		t.Errorf("expected 404 for unknown pubkey, got %d", resp.StatusCode)
+	}
+
+	resp, _ = f.admin(t, "POST", "/v1/admin/users/notapubkey/reset-username", nil)
+	if resp.StatusCode != 400 {
+		t.Errorf("expected 400 for invalid pubkey, got %d", resp.StatusCode)
+	}
+
+	row := f.db.QueryRow(`SELECT COUNT(*) FROM audit_log WHERE action = ?`,
+		"user.username_reset")
+	var n int
+	if err := row.Scan(&n); err != nil {
+		t.Fatal(err)
+	}
+	if n < 1 {
+		t.Errorf("expected user.username_reset audit entry, got %d", n)
+	}
+}
+
+func TestAdminResetAllUsernames(t *testing.T) {
+	f := newFixture(t)
+
+	// Two more 64-char hex strings — not necessarily valid Schnorr keys, so we
+	// insert them via raw SQL to bypass the admin endpoint validation.
+	hexB := "1f8c41ebcd55a8d8db2e0a8c3a4b9c5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1d"
+	hexInactive := "2a8c41ebcd55a8d8db2e0a8c3a4b9c5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1e"
+
+	if resp, body := f.admin(t, "POST", "/v1/admin/users", map[string]any{
+		"pubkey": testHex, "username": "alice",
+		"subscription_type": "yearly", "years": 1,
+	}); resp.StatusCode != 201 {
+		t.Fatalf("add A status %d: %s", resp.StatusCode, body)
+	}
+	if resp, body := f.admin(t, "PUT", "/v1/admin/users/"+testHex,
+		map[string]any{"username": "alice2"}); resp.StatusCode != 200 {
+		t.Fatalf("pin A status %d: %s", resp.StatusCode, body)
+	}
+
+	if _, err := f.db.ExecContext(context.Background(),
+		`INSERT INTO users (pubkey, username, subscription_type, expires_at, is_active, manual_username, last_synced_at, created_at)
+		 VALUES (?, 'bob', 'yearly', NULL, 1, 1, ?, datetime('now'))`,
+		hexB, "2099-01-01T00:00:00Z"); err != nil {
+		t.Fatal(err)
+	}
+
+	if _, err := f.db.ExecContext(context.Background(),
+		`INSERT INTO users (pubkey, username, subscription_type, expires_at, is_active, manual_username, last_synced_at, created_at)
+		 VALUES (?, 'carol', 'yearly', NULL, 0, 1, ?, datetime('now'))`,
+		hexInactive, "2099-01-01T00:00:00Z"); err != nil {
+		t.Fatal(err)
+	}
+
+	if _, err := f.db.ExecContext(context.Background(),
+		`UPDATE users SET last_synced_at = ? WHERE pubkey = ?`,
+		"2099-01-01T00:00:00Z", testHex); err != nil {
+		t.Fatal(err)
+	}
+
+	resp, body := f.admin(t, "POST", "/v1/admin/users/reset-usernames", nil)
+	if resp.StatusCode != 200 {
+		t.Fatalf("bulk reset status %d: %s", resp.StatusCode, body)
+	}
+	var got map[string]any
+	if err := json.Unmarshal(body, &got); err != nil {
+		t.Fatal(err)
+	}
+	if cnt, _ := got["reset"].(float64); cnt != 2 {
+		t.Errorf("expected reset=2 (active users only), got %v (body %s)", got["reset"], body)
+	}
+
+	rows, err := f.db.Query(`SELECT pubkey, manual_username, last_synced_at FROM users`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var pk string
+		var manual int
+		var lastSynced sql.NullString
+		if err := rows.Scan(&pk, &manual, &lastSynced); err != nil {
+			t.Fatal(err)
+		}
+		switch pk {
+		case testHex, hexB:
+			if manual != 0 {
+				t.Errorf("%s: expected manual_username=0 after reset, got %d", pk, manual)
+			}
+			if lastSynced.Valid && lastSynced.String != "" {
+				t.Errorf("%s: expected last_synced_at NULL after reset, got %q", pk, lastSynced.String)
+			}
+		case hexInactive:
+			if manual != 1 {
+				t.Errorf("inactive user manual_username should be untouched, got %d", manual)
+			}
+			if !lastSynced.Valid || lastSynced.String == "" {
+				t.Errorf("inactive user last_synced_at should be untouched, got %v", lastSynced)
+			}
+		}
+	}
+
+	row := f.db.QueryRow(`SELECT COUNT(*) FROM audit_log WHERE action = ?`,
+		"users.usernames_reset")
+	var n int
+	if err := row.Scan(&n); err != nil {
+		t.Fatal(err)
+	}
+	if n != 1 {
+		t.Errorf("expected 1 users.usernames_reset audit entry, got %d", n)
+	}
+}
+
 func TestOpenAPI(t *testing.T) {
 	f := newFixture(t)
 	resp, body := f.get(t, "/openapi.json")
@@ -379,6 +554,29 @@ func TestDocsPage(t *testing.T) {
 	}
 }
 
+func TestCORSHeader(t *testing.T) {
+	f := newFixture(t)
+
+	resp, _ := f.get(t, "/healthz")
+	if got := resp.Header.Get("Access-Control-Allow-Origin"); got != "*" {
+		t.Errorf("expected Access-Control-Allow-Origin=*, got %q", got)
+	}
+
+	req, _ := http.NewRequest("OPTIONS", f.srv.URL+"/v1/pricing", nil)
+	req.Header.Set("Origin", "https://random-frontend.example")
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusNoContent {
+		t.Errorf("expected 204 on OPTIONS preflight, got %d", resp.StatusCode)
+	}
+	if got := resp.Header.Get("Access-Control-Allow-Origin"); got != "*" {
+		t.Errorf("expected Access-Control-Allow-Origin=*, got %q", got)
+	}
+}
+
 func TestBodyLimit(t *testing.T) {
 	f := newFixture(t)
 	huge := bytes.Repeat([]byte("a"), 2<<20) // 2 MiB

internal/invoice/lnbits.go

@@ -26,10 +26,11 @@ func NewLNbits(baseURL, invoiceKey string) *LNbitsClient {
 }
 
 type createReq struct {
-	Out    bool   `json:"out"`
-	Amount int64  `json:"amount"`
-	Memo   string `json:"memo"`
-	Expiry int    `json:"expiry,omitempty"`
+	Out    bool              `json:"out"`
+	Amount int64             `json:"amount"`
+	Memo   string            `json:"memo"`
+	Expiry int               `json:"expiry,omitempty"`
+	Extra  map[string]string `json:"extra,omitempty"`
 }
 
 type createResp struct {
@@ -47,8 +48,8 @@ type statusResp struct {
 	} `json:"details"`
 }
 
-func (c *LNbitsClient) Create(ctx context.Context, amountSats int64, memo string, expirySecs int) (string, string, error) {
-	body, err := json.Marshal(createReq{Out: false, Amount: amountSats, Memo: memo, Expiry: expirySecs})
+func (c *LNbitsClient) Create(ctx context.Context, amountSats int64, memo string, expirySecs int, extra map[string]string) (string, string, error) {
+	body, err := json.Marshal(createReq{Out: false, Amount: amountSats, Memo: memo, Expiry: expirySecs, Extra: extra})
 	if err != nil {
 		return "", "", err
 	}

internal/invoice/service.go

@@ -20,6 +20,8 @@ type Pricing struct {
 	YearlySats   int64
 	LifetimeSats int64
 	ExpiryMins   int
+	MemoYearly   string
+	MemoLifetime string
 }
 
 type Service struct {
@@ -131,17 +133,15 @@ func (s *Service) Create(ctx context.Context, req CreateRequest) (*PendingInvoic
 	}
 
 	amount := s.pricing.YearlySats * int64(req.Years)
+	memo := s.pricing.MemoYearly
 	if req.SubscriptionType == user.SubLifetime {
 		amount = s.pricing.LifetimeSats
-	}
-
-	memo := fmt.Sprintf("%s@%s", username, s.domain)
-	if isRenewal {
-		memo = "renewal: " + memo
+		memo = s.pricing.MemoLifetime
 	}
 
 	expirySecs := s.pricing.ExpiryMins * 60
-	hash, request, err := s.lnbits.Create(ctx, amount, memo, expirySecs)
+	extra := map[string]string{"pubkey": req.Pubkey}
+	hash, request, err := s.lnbits.Create(ctx, amount, memo, expirySecs, extra)
 	if err != nil {
 		return nil, err
 	}

internal/user/repo.go

@@ -133,6 +133,20 @@ func (r *Repo) Delete(ctx context.Context, pubkey string) error {
 	return err
 }
 
+// ResetAllSyncFlags clears manual_username and last_synced_at for every active
+// user so the profile sync worker re-evaluates them on its next tick. Returns
+// the number of affected rows.
+func (r *Repo) ResetAllSyncFlags(ctx context.Context) (int64, error) {
+	res, err := r.db.ExecContext(ctx, `UPDATE users SET
+        manual_username = 0,
+        last_synced_at = NULL
+        WHERE is_active = 1`)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
 // SetActiveExpiry sets a user's expires_at to an absolute value and reactivates
 // them. Idempotent: applying the same input twice produces the same end state.
 func (r *Repo) SetActiveExpiry(ctx context.Context, pubkey string, sub SubscriptionType, expiresAt *time.Time) error {

internal/user/service.go

@@ -100,6 +100,29 @@ func (s *Service) Delete(ctx context.Context, pubkey string) error {
 	return s.repo.Delete(ctx, pubkey)
 }
 
+// ResetUsername clears the manual_username pin and last_synced_at cooldown for
+// a single user so the next profile sync cycle re-evaluates their kind:0
+// metadata. The stored username is left untouched until the worker overwrites
+// it. Returns the updated user.
+func (s *Service) ResetUsername(ctx context.Context, pubkey string) (*User, error) {
+	u, err := s.repo.GetByPubkey(ctx, pubkey)
+	if err != nil {
+		return nil, err
+	}
+	u.ManualUsername = false
+	u.LastSyncedAt = nil
+	if err := s.repo.Update(ctx, u); err != nil {
+		return nil, err
+	}
+	return u, nil
+}
+
+// ResetAllUsernames clears manual_username and last_synced_at for every active
+// user. Returns the number of affected rows.
+func (s *Service) ResetAllUsernames(ctx context.Context) (int64, error) {
+	return s.repo.ResetAllSyncFlags(ctx)
+}
+
 // computeExpiry returns *time.Time (nil for lifetime).
 func computeExpiry(sub SubscriptionType, years int, current time.Time, now time.Time) *time.Time {
 	if sub == SubLifetime {