feat(inbox): graduate chat media send to GA (remove beta flag)

Photo/video/document/voice send has been validated in production, so it's
now available to every account. Removes the 'chat_media' beta gate:

- Composer always shows the attach menu + voice recorder (no
  useBetaFeature check).
- Send route no longer 403s media kinds for non-opted-in accounts.
- Deletes the now-unused beta-features helper, the useBetaFeature hook,
  and their test (added solely for this rollout; no other consumer).

The profiles.beta_features column (migration 011) is left in place for
future betas. typecheck/lint/build green; 411 tests pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/api/whatsapp/send/route.ts

@@ -21,7 +21,6 @@ import {
 } from '@/lib/rate-limit'
 import type { MessageTemplate } from '@/types'
 import { isMessageTemplate } from '@/lib/whatsapp/template-row-guard'
-import { hasBetaFeature, CHAT_MEDIA_BETA } from '@/lib/auth/beta-features'
 
 export async function POST(request: Request) {
   try {
@@ -52,7 +51,7 @@ export async function POST(request: Request) {
     // returned nothing for teammates who didn't author the row.
     const { data: profile } = await supabase
       .from('profiles')
-      .select('account_id, beta_features')
+      .select('account_id')
       .eq('user_id', user.id)
       .maybeSingle()
     const accountId = profile?.account_id as string | undefined
@@ -120,17 +119,6 @@ export async function POST(request: Request) {
       )
     }
 
-    // Media sends are beta-gated (issue #213). Text + templates stay
-    // available to everyone; only accounts opted into 'chat_media' may
-    // send media — mirrors the client gate so the endpoint can't be
-    // driven ahead of the rollout.
-    if (isMediaKind && !hasBetaFeature(profile?.beta_features, CHAT_MEDIA_BETA)) {
-      return NextResponse.json(
-        { error: 'Media messages are not enabled for your account.' },
-        { status: 403 }
-      )
-    }
-
     // Meta caps media captions at 1024 chars; reject before the upload is
     // wasted at the Meta call. (Audio carries no caption — see meta-api.)
     if (

src/components/inbox/message-composer.tsx

@@ -28,8 +28,6 @@ import {
   DropdownMenuTrigger,
 } from "@/components/ui/dropdown-menu";
 import { useCan } from "@/hooks/use-can";
-import { useBetaFeature } from "@/hooks/use-beta-feature";
-import { CHAT_MEDIA_BETA } from "@/lib/auth/beta-features";
 import { cn } from "@/lib/utils";
 import { toast } from "sonner";
 import {
@@ -162,10 +160,6 @@ export function MessageComposer({
   const readOnly = !canSend;
   // Media (like free-form text) is only allowed inside the 24h window.
   const inputsDisabled = readOnly || sessionExpired;
-  // Beta-gated: only accounts opted into 'chat_media' see the attach
-  // menu / voice recorder. Everyone else gets the original text + template
-  // composer with no visible change.
-  const chatMediaEnabled = useBetaFeature(CHAT_MEDIA_BETA);
 
   const clearTimer = useCallback(() => {
     if (timerRef.current !== null) {
@@ -411,10 +405,7 @@ export function MessageComposer({
         </div>
       )}
 
-      {/* Hidden file inputs driven by the attach menu — only mounted when
-          the beta feature is on. */}
-      {chatMediaEnabled && (
-        <>
+      {/* Hidden file inputs driven by the attach menu. */}
       <input
         ref={imageInputRef}
         type="file"
@@ -445,8 +436,6 @@ export function MessageComposer({
           e.target.value = "";
         }}
       />
-        </>
-      )}
 
       {draft ? (
         <MediaDraftPreview
@@ -483,9 +472,7 @@ export function MessageComposer({
         </div>
       ) : (
         <div className="flex items-end gap-2">
-          {/* Attach menu — photo / video / document / voice. Beta-gated:
-              hidden entirely for accounts not opted into 'chat_media'. */}
-          {chatMediaEnabled && (
+          {/* Attach menu — photo / video / document / voice. */}
           <DropdownMenu>
             <DropdownMenuTrigger
               disabled={inputsDisabled || busy}
@@ -523,7 +510,6 @@ export function MessageComposer({
               </DropdownMenuItem>
             </DropdownMenuContent>
           </DropdownMenu>
-          )}
 
           <GatedButton
             variant="ghost"
@@ -578,14 +564,7 @@ export function MessageComposer({
           `items-end` buttons below the textarea. Indented to line up
           under the textarea left edge. */}
       {!draft && !recording && (
-        <p
-          className={cn(
-            "mt-1 text-[10px] text-muted-foreground",
-            // Line up under the textarea: one button (template) when the
-            // attach menu is hidden, two when the beta feature adds it.
-            chatMediaEnabled ? "pl-[5.5rem]" : "pl-11",
-          )}
-        >
+        <p className="mt-1 pl-[5.5rem] text-[10px] text-muted-foreground">
           Type &apos;/&apos; for quick replies
         </p>
       )}

src/hooks/use-beta-feature.ts

@@ -1,20 +0,0 @@
-"use client";
-
-import { useAuth } from "@/hooks/use-auth";
-import { hasBetaFeature, type BetaFeature } from "@/lib/auth/beta-features";
-
-/**
- * Boolean gate for a per-profile beta feature flag (see
- * `@/lib/auth/beta-features`). Mirrors `useCan`: returns `false` while the
- * profile is still loading so a not-yet-opted-in user never sees a flash
- * of beta UI during the initial load window.
- *
- * Example:
- *   const chatMedia = useBetaFeature(CHAT_MEDIA_BETA);
- *   {chatMedia && <AttachButton />}
- */
-export function useBetaFeature(feature: BetaFeature): boolean {
-  const { profileLoading, profile } = useAuth();
-  if (profileLoading || !profile) return false;
-  return hasBetaFeature(profile.beta_features, feature);
-}

src/lib/auth/beta-features.test.ts

@@ -1,19 +0,0 @@
-import { describe, expect, it } from "vitest";
-import { CHAT_MEDIA_BETA, hasBetaFeature } from "./beta-features";
-
-describe("hasBetaFeature", () => {
-  it("is true when the feature key is present", () => {
-    expect(hasBetaFeature([CHAT_MEDIA_BETA], CHAT_MEDIA_BETA)).toBe(true);
-    expect(hasBetaFeature(["flows", CHAT_MEDIA_BETA], CHAT_MEDIA_BETA)).toBe(true);
-  });
-
-  it("is false when the key is absent", () => {
-    expect(hasBetaFeature(["flows"], CHAT_MEDIA_BETA)).toBe(false);
-    expect(hasBetaFeature([], CHAT_MEDIA_BETA)).toBe(false);
-  });
-
-  it("is false (not throwing) for null / undefined lists", () => {
-    expect(hasBetaFeature(null, CHAT_MEDIA_BETA)).toBe(false);
-    expect(hasBetaFeature(undefined, CHAT_MEDIA_BETA)).toBe(false);
-  });
-});

src/lib/auth/beta-features.ts

@@ -1,31 +0,0 @@
-/**
- * Beta feature flags, stored per-profile in `profiles.beta_features`
- * (a `TEXT[]`, migration 011). A feature is "on" for an account when its
- * key is present in that array; the owner opts in by editing the column
- * in Supabase Studio:
- *
- *   UPDATE profiles
- *   SET beta_features = array_append(beta_features, 'chat_media')
- *   WHERE email = 'someone@example.com';
- *
- * This module is the single source of truth for the keys + the membership
- * check so the client hook (`useBetaFeature`) and the server routes gate
- * on exactly the same logic.
- */
-
-/** Agent-initiated media sends in the inbox composer (issue #213). */
-export const CHAT_MEDIA_BETA = "chat_media";
-
-export type BetaFeature = typeof CHAT_MEDIA_BETA;
-
-/**
- * Whether an opted-in feature list contains `feature`. Pure + null-safe so
- * both the client (reading `profile.beta_features`) and the server
- * (reading the row from Supabase) share one implementation.
- */
-export function hasBetaFeature(
-  betaFeatures: readonly string[] | null | undefined,
-  feature: BetaFeature,
-): boolean {
-  return betaFeatures?.includes(feature) ?? false;
-}