Release v0.9.2-fixes — member count, avatar reset, precise ping-creator · xAlisher/peers

Rollout polish — seamless update from 0.9.1 (same signing key, just refresh F-Droid).

✨ Features

Group member count in the header (#444). Open a group and the member count shows as a second line under the name, matching the conversation list.

Reset now clears your custom avatar (#441). Resetting your identity (or restoring a backup) no longer keeps the previous identity's custom sigil — a fresh identity shows its own generated identicon; a restore re-hydrates the backed-up one.
"Ping creator" targets the real creator (#442, #433). In an ended group, Ping creator now DMs the group's actual recorded creator (read from authenticated MLS group state) instead of the first member on the roster. Groups created before this record no creator and fall back to a best guess.
Smoother restore into groups (#446, partial). After restoring a backup the app forces a catch-up, shrinking the window where a just-restored member can't post yet.

Native liblogoschat.so gains a group_creator accessor (the #442 enabler); rebuilt + re-provenanced (c5293f89…).

#446: the full auto-retry + friendlier "catching up / member offline" message (instead of the raw "No matching key package") is still in progress.
#442: the fix is verified/deployed; the final on-screen assertion awaits a dead post-#349 group to test against.