Merge branch 'dev' into sonarqube/maintainability-2026-03-14

Author: dozro

.changeset/add_command_for_msc4268_e2ee_history_sharing.md

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+---
+default: minor
+---
+
+added a `/sharehistory` command to [share encrypted history with a user](https://github.com/matrix-org/matrix-spec-proposals/blob/rav/proposal/encrypted_history_sharing/proposals/4268-encrypted-history-sharing.md)

.changeset/add_tombstone_settings_toggle_for_redacted_msgs.md

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+---
+default: patch
+---
+
+Add Ctrl+F / Cmd+F keyboard shortcut to open Sable search instead of browser find-in-page

.changeset/compat_msc2723_msg_forwarding.md

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+---
+default: minor
+---
+
+Push notifications now use `event_id_only` format — Sygnal never sees message content or sender metadata, and encrypted messages are decrypted client-side when the app tab is open

.changeset/disable_quick_add_for_encrypted_sticker.md

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+---
+default: minor
+---
+
+Added a toggle to enable/disable showing the call button for large (> 10 member) rooms.