Update docs/build-notes.md

Update development roadmap

docs/build-notes.md

@@ -53,10 +53,53 @@ Wallet configuration, label storage, transaction scanning, and notification func
 
 ## Next steps
 
-* Add persistent storage
+### Milestone 3 — Query Bitcoin data through Fulcrum
-* Add wallet configuration
+
-* Add BIP-329 support
+* Query blockchain data through the Fulcrum Electrum server
-* Add wallet/address scanning
+* Verify address and transaction queries
-* Add transaction monitoring
+* Build the backend foundation for wallet monitoring
-* Display live wallet and transaction data in the web interface
+
-* Add transaction notifications with label reminders
+### Milestone 4 — Address watchlist
+
+* Add watch-only Bitcoin addresses
+* Store monitored addresses persistently
+* Display address activity and UTXOs
+* Display transaction history
+
+### Milestone 5 — xpub watch-only wallets
+
+* Import xpub-based watch-only wallets
+* Derive addresses for monitoring
+* Support common extended public key formats
+* Track wallet activity without private keys
+
+### Milestone 6 — BSMS multisig wallets
+
+* Import BSMS wallet files
+* Support multisig wallet/watch-only configuration
+* Monitor multisig wallet addresses and transactions
+* Keep private signing material out of Munin
+
+### Milestone 7 — BIP-329 labels
+
+* Import BIP-329 labels
+* Export BIP-329 labels
+* Store and manage labels persistently
+* Associate labels with relevant Bitcoin objects
+
+### Milestone 8 — Notifications
+
+* Add NTFY notifications
+* Add email notifications through SMTP
+* Allow notification settings to be configured per wallet
+* Support notifications for new transactions
+* Support notifications for relevant wallet/UTXO changes
+* Use the NTFY documentation and Start9 SMTP packaging examples as implementation references
+
+### Milestone 9 — PWA
+
+* Make the web interface a fully installable PWA
+* Add responsive desktop and mobile layouts
+* Add service worker and application manifest
+* Improve offline application-shell behaviour
+* Polish wallet, transaction, label, and notification views