v1.2.7

🛠️ Amber finally pops up — signing works
The big one. On some Android setups (notably GrapheneOS), tapping delete,
accepting a crew invite, sending a zap, or editing your profile would spin
forever and Amber never appeared. Under the hood the app was asking Amber
through a silent background channel that stalls on locked-down devices.

Now every signing and encryption action launches Amber's approval screen
directly (the same reliable path login already used) and hands the result
straight back to the app — so the action completes instead of hanging. If
Amber genuinely doesn't respond, you get a clear "open Amber and approve"
message in seconds instead of an endless spinner.

IMPORTANT: after updating, log OUT and log back IN once so Amber re-grants
the signing permission. Then delete/accept/zap will just work.

🔔 Notification bell "Mark read" actually clears the badge
Marking notifications read now clears the count for crew items too, while
your pending invites and requests stay visible in the Crews tab until you
act on them.

🧹 Housekeeping
Behind-the-scenes reliability fixes across the signing and notification flows.