Chat: Concord encrypted community messaging, with a default coinos room

Implements the Concord protocol (CORD-01..04) — private streams, the
control-plane fold, guestbook membership, owner-rooted authority — and
ships a built-in "coinos" community founded by Adam's npub (owner/admin).
Messages sign with the nostr login identity when a signer is live, else
the wallet's NIP-06 key; all encryption rides derived stream keys so
remote signers only ever sign seals.

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Wvj4aoeMZwA7VUGdJP9Swi

1 files changed, 2 insertions, 0 deletions

diff --git a/src/app.js b/src/app.js
index 0bce8b6..b31c136 100644
--- a/src/app.js
+++ b/src/app.js
@@ -1954,6 +1954,7 @@ function tabsBar() {
     // Watch-only wallets show Send too — it prompts to load the seed to spend.
     ['send', t('tabSend')],
     ['history', t('tabHistory')],
+    ...featureAll('tabs'), // feature-provided tabs (e.g. messages) sit before Settings
     ['settings', t('tabSettings')],
   ];
   return h(
@@ -1982,6 +1983,7 @@ function tabContent() {
     case 'send': return sendTab();
     case 'history': return historyTab();
     case 'settings': return settingsTab();
+    default: return featureHook('tabContent', ui.tab);
   }
 }