chore(copy): support@instanode.dev → contact@instanode.dev (public contact email) (#273)

User-facing contact email changed to contact@instanode.dev everywhere it appears
(error/agent_action messages, billing/checkout/plan-change copy, transactional
email footer, OpenAPI descriptions + snapshot). No senders changed (sender stays
noreply@instanode.dev). The /support URL is unchanged — only the email address.

Co-authored-by: Claude <noreply@anthropic.com>

Author: mastermanas805

internal/email/email.go

@@ -553,11 +553,11 @@ func clampAttemptCount(n int) int {
 // TEXT column on the table, so adding a new kind never needs a migration —
 // the only invariant is "operators can filter by kind in the dashboard".
 const (
-	EmailSendKindPaymentFailed    = "payment_failed"
-	EmailSendKindPaymentReceipt   = "receipt"
-	EmailSendKindTeamInvite       = "team_invite"
-	EmailSendKindDeletionConfirm  = "deletion_confirm"
-	EmailSendKindMagicLink        = "magic_link"
+	EmailSendKindPaymentFailed   = "payment_failed"
+	EmailSendKindPaymentReceipt  = "receipt"
+	EmailSendKindTeamInvite      = "team_invite"
+	EmailSendKindDeletionConfirm = "deletion_confirm"
+	EmailSendKindMagicLink       = "magic_link"
 )
 
 // SendPaymentFailed sends a payment failure notification email.
@@ -728,7 +728,7 @@ Receipt
 
 View your billing details: https://instanode.dev/app/billing
 
-Need help? Reply to this email or contact support@instanode.dev.
+Need help? Reply to this email or contact contact@instanode.dev.
 
 — The instanode.dev team
 `, headline, leadPlain, receipt.Plan, amountPlain, receipt.Period)
@@ -752,7 +752,7 @@ Need help? Reply to this email or contact support@instanode.dev.
   </p>
   <p style="margin-top:24px;color:#666;font-size:13px;">
     Need help? Reply to this email or contact
-    <a href="mailto:support@instanode.dev" style="color:#444;">support@instanode.dev</a>.
+    <a href="mailto:contact@instanode.dev" style="color:#444;">contact@instanode.dev</a>.
   </p>
   <p style="margin-top:40px;color:#666;font-size:13px;">— The instanode.dev team</p>
 </body>

internal/handlers/agent_action.go

@@ -347,7 +347,7 @@ const AgentActionBindingLookupFailed = "Tell the user the platform couldn't reso
 // the middleware can't import handlers (cycle), so both sides keep their
 // own copy. The contract test asserts only one of the two copies; touching
 // either without the other is the regression we want CI to catch.
-const AgentActionAdminRequired = "Tell the user this endpoint requires platform-admin access. Ask support@instanode.dev via https://instanode.dev/support if you think this is wrong."
+const AgentActionAdminRequired = "Tell the user this endpoint requires platform-admin access. Ask contact@instanode.dev via https://instanode.dev/support if you think this is wrong."
 
 // newAgentActionAdminTierChanged is returned in the success response of
 // POST /api/v1/admin/customers/:team_id/tier so the calling agent has

internal/handlers/billing.go

@@ -997,7 +997,7 @@ func (h *BillingHandler) CreateCheckoutAPI(c *fiber.Ctx) error {
 		// "contact sales / not yet available" message instead of telling
 		// the user they made a typo.
 		return respondError(c, fiber.StatusBadRequest, "tier_not_yet_available",
-			"The Team plan is not yet available for self-serve checkout — contact support@instanode.dev.")
+			"The Team plan is not yet available for self-serve checkout — contact contact@instanode.dev.")
 	default:
 		return respondError(c, fiber.StatusBadRequest, "invalid_plan", "plan must be 'hobby', 'hobby_plus', or 'pro'")
 	}
@@ -3141,7 +3141,7 @@ func resolveTeamFromNotes(ctx context.Context, h *BillingHandler, sub rzpSubscri
 // dashboard, executed by support staff, which fires the subscription.cancelled
 // webhook → handleSubscriptionCancelled in RazorpayWebhook (unchanged).
 //
-// The dashboard surfaces cancellation as a mailto:support@instanode.dev link,
+// The dashboard surfaces cancellation as a mailto:contact@instanode.dev link,
 // not as a button that calls this API.
 //
 // If a future internal flow (RTBF / team deletion) needs to cancel a
@@ -3461,7 +3461,7 @@ func (h *BillingHandler) ChangePlanAPI(c *fiber.Ctx) error {
 		// OK — fall through.
 	case "yearly":
 		return respondError(c, fiber.StatusBadRequest, "yearly_change_plan_unsupported",
-			"Changing to a yearly plan via /change-plan is not yet supported. Cancel and use POST /api/v1/billing/checkout with plan_frequency='yearly', or contact support@instanode.dev.")
+			"Changing to a yearly plan via /change-plan is not yet supported. Cancel and use POST /api/v1/billing/checkout with plan_frequency='yearly', or contact contact@instanode.dev.")
 	default:
 		return respondError(c, fiber.StatusBadRequest, "invalid_frequency",
 			"plan_frequency must be 'monthly' or 'yearly'")
@@ -3489,7 +3489,7 @@ func (h *BillingHandler) ChangePlanAPI(c *fiber.Ctx) error {
 	// happens to be set in this environment.
 	if target == "team" {
 		return respondError(c, fiber.StatusBadRequest, "tier_not_yet_available",
-			"The Team plan is not yet available for self-serve plan changes — contact support@instanode.dev.")
+			"The Team plan is not yet available for self-serve plan changes — contact contact@instanode.dev.")
 	}
 	planIDs := h.razorpayPlanIDs()
 	if _, ok := planIDs[target]; !ok {
@@ -3505,9 +3505,9 @@ func (h *BillingHandler) ChangePlanAPI(c *fiber.Ctx) error {
 	targetRank := plans.Rank(target)
 	if currentRank >= 0 && targetRank >= 0 && targetRank <= currentRank {
 		return respondErrorWithAgentAction(c, fiber.StatusBadRequest, "downgrade_not_self_serve",
-			"Plan downgrades are handled by support, not self-serve. Email support@instanode.dev to change to a lower tier.",
-			"Tell the user that downgrading to a lower plan is support-assisted. Have them email support@instanode.dev with their team and the target plan.",
-			"mailto:support@instanode.dev")
+			"Plan downgrades are handled by support, not self-serve. Email contact@instanode.dev to change to a lower tier.",
+			"Tell the user that downgrading to a lower plan is support-assisted. Have them email contact@instanode.dev with their team and the target plan.",
+			"mailto:contact@instanode.dev")
 	}
 	// (Target=team is rejected above with tier_not_yet_available — the
 	// 2026-06-04 CEO re-gate. Only hobby/hobby_plus/pro upgrades reach here.)

internal/handlers/billing_block_no_cancel_downgrade_test.go

@@ -140,7 +140,7 @@ func TestBillingBlock_NoSelfServeCancelOrDowngradeRoute(t *testing.T) {
 // paying team requesting a LOWER or EQUAL tier via the in-app change-plan path
 // is rejected with downgrade_not_self_serve and routed to support, NOT
 // silently dropped. Verified against billing.go:ChangePlanAPI (it returns 400
-// downgrade_not_self_serve + a mailto:support@instanode.dev agent_action for
+// downgrade_not_self_serve + a mailto:contact@instanode.dev agent_action for
 // any target whose rank ≤ the current tier's rank).
 func TestBillingBlock_ChangePlanRejectsDowngrade(t *testing.T) {
 	if billingBlockSkipNoDB(t) {

internal/handlers/error_envelope_test.go

@@ -236,7 +236,7 @@ func TestErrorEnvelope_500_NoRetryAfter(t *testing.T) {
 	assert.NotEmpty(t, body["agent_action"],
 		"5xx must always carry an agent_action — registry entry preferred, fallback as floor")
 	if action, ok := body["agent_action"].(string); ok {
-		assert.Contains(t, action, "support@instanode.dev",
+		assert.Contains(t, action, "contact@instanode.dev",
 			"every 5xx agent_action — whether registry or fallback — names the support contact")
 	}
 }
@@ -336,7 +336,7 @@ func TestErrorEnvelope_ContactSupportContract(t *testing.T) {
 	assert.Contains(t, s, "request_id",
 		"AgentActionContactSupport must name request_id so the user knows what to quote")
 	// 3. Exact next action.
-	assert.Contains(t, s, "support@instanode.dev",
+	assert.Contains(t, s, "contact@instanode.dev",
 		"AgentActionContactSupport must name the support email — that's the action")
 	// 4. Full https URL.
 	assert.Contains(t, s, "https://instanode.dev/",

internal/handlers/helpers.go

@@ -81,7 +81,7 @@ type errorCodeMeta struct {
 // Used by respondError when status >= 500 and the code is not in the
 // registry. Keeps the agent_action field populated even for plumbing
 // errors so the calling agent always has something concrete to relay.
-const AgentActionContactSupport = "Tell the user something on our side went wrong. Email support@instanode.dev with this request_id and a brief description — see https://instanode.dev/support."
+const AgentActionContactSupport = "Tell the user something on our side went wrong. Email contact@instanode.dev with this request_id and a brief description — see https://instanode.dev/support."
 
 // codeToAgentAction maps respondError `code` values to the sentence the
 // agent should surface and, where relevant, the upgrade URL. Codes absent
@@ -152,7 +152,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 	// right "not yet available / contact sales" message. Refs: memory
 	// `project_team_plan_not_rolled_out_no_payment`.
 	"tier_not_yet_available": {
-		AgentAction: "Tell the user the Team plan is not yet available for self-serve purchase. They should contact support@instanode.dev — see https://instanode.dev/pricing.",
+		AgentAction: "Tell the user the Team plan is not yet available for self-serve purchase. They should contact contact@instanode.dev — see https://instanode.dev/pricing.",
 		UpgradeURL:  "https://instanode.dev/pricing",
 	},
 	"events_query_failed": {
@@ -288,7 +288,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user this invitation has already been accepted — they're on the team. Have them open https://instanode.dev/app to see their resources.",
 	},
 	"already_claimed": {
-		AgentAction: "Tell the user these resources were already claimed by another account. If they believe this is wrong, have them email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user these resources were already claimed by another account. If they believe this is wrong, have them email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 
 	// ── Expired / gone ─────────────────────────────────────────────────────
@@ -663,7 +663,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user their session belongs to a different team than the storage token. Re-authenticate as the token's owning team — see https://instanode.dev/docs/auth.",
 	},
 	"env_load_failed": {
-		AgentAction: "Tell the user the persisted environment variables could not be loaded for this stack. Retry the redeploy in 30 seconds — see https://instanode.dev/status. If it keeps failing, email support@instanode.dev with the request_id.",
+		AgentAction: "Tell the user the persisted environment variables could not be loaded for this stack. Retry the redeploy in 30 seconds — see https://instanode.dev/status. If it keeps failing, email contact@instanode.dev with the request_id.",
 	},
 	"invalid_service": {
 		AgentAction: "Tell the user the service value is unknown. Use one of: postgres, redis, mongodb, queue, storage, webhook, vector — see https://instanode.dev/docs.",
@@ -876,7 +876,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user billing is not configured on this deployment. Operators must set RAZORPAY_KEY_ID / SECRET — see https://instanode.dev/docs/billing.",
 	},
 	"downgrade_not_self_serve": {
-		AgentAction: "Tell the user downgrades and cancellations are not self-serve. Email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user downgrades and cancellations are not self-serve. Email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"yearly_change_plan_unsupported": {
 		AgentAction: "Tell the user yearly subscriptions can't switch plans inline. Cancel the current subscription, then start the new plan at https://instanode.dev/pricing.",
@@ -888,7 +888,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 
 	// ── Razorpay codes (kept as raw passthrough) ───────────────────────────
 	"razorpay_error": {
-		AgentAction: "Tell the user Razorpay returned an error completing the payment. Check the error message and retry, or contact support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user Razorpay returned an error completing the payment. Check the error message and retry, or contact contact@instanode.dev — see https://instanode.dev/support.",
 	},
 
 	// ── Validation 4xx: signature / state ──────────────────────────────────
@@ -939,7 +939,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user the platform database hit a transient error. Retry in 30 seconds with exponential backoff — see https://instanode.dev/status if it persists.",
 	},
 	"internal_error": {
-		AgentAction: "Tell the user something on our side went wrong. Email support@instanode.dev with this request_id, or check https://instanode.dev/status.",
+		AgentAction: "Tell the user something on our side went wrong. Email contact@instanode.dev with this request_id, or check https://instanode.dev/status.",
 	},
 	"lookup_failed": {
 		AgentAction: "Tell the user a lookup on the platform backend timed out. Retry in 30 seconds — see https://instanode.dev/status.",
@@ -988,7 +988,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user creating the restore failed. Retry in 60 seconds — see https://instanode.dev/status.",
 	},
 	"restore_failed": {
-		AgentAction: "Tell the user the restore did not complete. Retry in 60 seconds; if it persists email support@instanode.dev — see https://instanode.dev/status.",
+		AgentAction: "Tell the user the restore did not complete. Retry in 60 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/status.",
 	},
 	"deletion_request_failed": {
 		AgentAction: "Tell the user the team-deletion request failed to persist. Retry in 30 seconds — see https://instanode.dev/status.",
@@ -1000,10 +1000,10 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user recording the promote rejection failed. Retry the rejection in 30 seconds — see https://instanode.dev/status.",
 	},
 	"execute_failed": {
-		AgentAction: "Tell the user executing the action failed. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user executing the action failed. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"summary_failed": {
-		AgentAction: "Tell the user computing the summary failed. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user computing the summary failed. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"status_failed": {
 		AgentAction: "Tell the user reading the status failed. Retry in 30 seconds — see https://instanode.dev/status.",
@@ -1012,13 +1012,13 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user reading the resource status failed. Retry in 30 seconds — see https://instanode.dev/status.",
 	},
 	"tier_failed": {
-		AgentAction: "Tell the user updating the tier failed. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user updating the tier failed. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"upgrade_failed": {
-		AgentAction: "Tell the user the tier upgrade could not be applied right now. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user the tier upgrade could not be applied right now. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"revocation_failed": {
-		AgentAction: "Tell the user revoking the session failed. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user revoking the session failed. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"role_lookup_failed": {
 		AgentAction: "Tell the user a team-role lookup failed. Retry in 30 seconds — see https://instanode.dev/status.",
@@ -1027,13 +1027,13 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user a team lookup failed. Retry in 30 seconds — see https://instanode.dev/status.",
 	},
 	"team_creation_failed": {
-		AgentAction: "Tell the user creating the team failed. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user creating the team failed. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"team_has_no_users": {
 		AgentAction: "Tell the user this team has no users yet — add an owner before issuing operations against it. See https://instanode.dev/docs/team.",
 	},
 	"user_creation_failed": {
-		AgentAction: "Tell the user creating the user account failed. Retry in 30 seconds; if it persists email support@instanode.dev — see https://instanode.dev/support.",
+		AgentAction: "Tell the user creating the user account failed. Retry in 30 seconds; if it persists email contact@instanode.dev — see https://instanode.dev/support.",
 	},
 	"user_upsert_failed": {
 		AgentAction: "Tell the user upserting the user record failed. Retry in 30 seconds — see https://instanode.dev/status.",
@@ -1061,10 +1061,10 @@ var codeToAgentAction = map[string]errorCodeMeta{
 	},
 	// (deletion_token_invalid covered in the deletion-confirmed section above)
 	"encryption_failed": {
-		AgentAction: "Tell the user the encryption step failed. Retry in 30 seconds; if it persists email support@instanode.dev with this request_id — see https://instanode.dev/support.",
+		AgentAction: "Tell the user the encryption step failed. Retry in 30 seconds; if it persists email contact@instanode.dev with this request_id — see https://instanode.dev/support.",
 	},
 	"decrypt_failed": {
-		AgentAction: "Tell the user decrypting the stored credential failed. Retry in 30 seconds; if it persists email support@instanode.dev with this request_id — see https://instanode.dev/support.",
+		AgentAction: "Tell the user decrypting the stored credential failed. Retry in 30 seconds; if it persists email contact@instanode.dev with this request_id — see https://instanode.dev/support.",
 	},
 	"encryption_unavailable": {
 		AgentAction: "Tell the user the encryption backend is temporarily unavailable. Retry in 60 seconds — see https://instanode.dev/status.",
@@ -1127,7 +1127,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user the quota check failed. Retry in 30 seconds — see https://instanode.dev/status.",
 	},
 	"billing_persistence_failed": {
-		AgentAction: "Tell the user persisting the billing change failed. Retry the action in 30 seconds; if it persists email support@instanode.dev with this request_id — see https://instanode.dev/support.",
+		AgentAction: "Tell the user persisting the billing change failed. Retry the action in 30 seconds; if it persists email contact@instanode.dev with this request_id — see https://instanode.dev/support.",
 	},
 
 	// ── 429 rate-limited (canonical) ───────────────────────────────────────
@@ -1186,7 +1186,7 @@ var codeToAgentAction = map[string]errorCodeMeta{
 		AgentAction: "Tell the user marking the deletion as confirmed failed. Retry in 30 seconds — see https://instanode.dev/status.",
 	},
 	"subscription_cancel_failed": {
-		AgentAction: "Tell the user cancelling the Razorpay subscription failed. The team-delete is paused; email support@instanode.dev so an operator can reconcile — see https://instanode.dev/support.",
+		AgentAction: "Tell the user cancelling the Razorpay subscription failed. The team-delete is paused; email contact@instanode.dev so an operator can reconcile — see https://instanode.dev/support.",
 	},
 
 	// ── Auth content-type gate (AUTH-163, CSRF). Per-IP rate-limit (AUTH-097/107)