Rebrand: hal → coinos v3

The app already presents as Coinos; this finishes the job in the repo:
package name, README, GitHub link, code comments, and the stale locale
lines that still explained the old "Hal Wallet" name (they fall back to
the English tribute line). Kept: the hal-nwc-pouch IndexedDB name (an
upgrade-compat identifier), the halwallet.app domain in the BIP-353
names feature (live infrastructure), and the Hal Finney tribute itself.

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

1 files changed, 4 insertions, 3 deletions

diff --git a/README.md b/README.md
index c15bf76..5986748 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Hal Wallet
+# coinos v3
 
 A self-contained, **single-file** Bitcoin wallet that runs entirely in the
 browser — think bitaddress.org, but a modern BIP84 HD wallet from a seed phrase
@@ -6,10 +6,11 @@ that scans history, watches for payments, spends on-chain, pays Lightning
 invoices, and holds an off-chain balance on **Ark**. The whole wallet is one
 static `index.html` you can save and run offline, forever.
 
-Live at **https://halwallet.app** (the built `index.html` also runs straight
+Live at **https://v3.coinos.io** (the built `index.html` also runs straight
 from the filesystem with no server).
 
-The name is a nod to [Hal Finney](https://en.wikipedia.org/wiki/Hal_Finney_(computer_scientist)).
+Built on the shoulders of [Hal Finney](https://en.wikipedia.org/wiki/Hal_Finney_(computer_scientist)) —
+this project began life as "Hal Wallet" in his memory.
 
 ## Features