core, ui: terminal chat layout for LLM and service bot chats (#7811)

* plan: UI improvements to improve LLM usage via SimpleX

* core, ui: types for chat layout

* core, ui: settings for alternative terminal-like chat layout for managing LLMs or other service bots

* plan: message priority

* fixes

* query plan

* update plans

* remove silent messages plan

* rename migrations

* implement layout

* amend

* fix

* fix

* fix

* improve

* time on the right, sender name in blue

* no avatar in direct chats

* better previews

* update, fixes

* update

* time gap

* changes

* ui: terminal layout line heights, gaps and time placement

* ui: simplify terminal meta layout, correct its docs and tests

* ui: right-to-left emoji edge in terminal rows, time placement tests

* android, desktop: raise Kotlin compiler memory to 4 GB

* ui: terminal captions as follow-up text, classic event separators

* ui: terminal media edge and overlay time, plan decisions

* ui: simplify terminal row separation, correct doc line references

* ui: keep the media time inside terminal rows, restore caption conditions

* ui: terminal heading capitals at large font scales, idle live message time

* ui: rename the classic voice-with-text flag, correct the meta copy docs

* ui: smaller terminal layout diff, sender gap and meta names

* ui: terminal row as tall as the media time

* docs: remove the chat layout section from the bots readme

* docs: shorten the terminal layout section of the chat view

* core: address settings API as on master, /auto_accept reads the stored layout

* ui: smaller terminal headings

* ui: classic sender rows and avatar rule as on master

* ui: classic reply quote text colour as on master

* ios: keep the chat layout setting with other UI settings

* ui: go-to button at the end of terminal rows, no gutter in direct chats

* ui: forwarded arrow on the header line of terminal rows, above the time

* ui: forwarded arrow centred above the time line of terminal rows

---------

Co-authored-by: Evgeny Poberezkin <evgeny@poberezkin.com>

simplex-chat.cabal

@@ -172,6 +172,7 @@ library
           Simplex.Chat.Store.Postgres.Migrations.M20261010_invite_member_via_group
           Simplex.Chat.Store.Postgres.Migrations.M20261012_delivery_job_notification
           Simplex.Chat.Store.Postgres.Migrations.M20261016_badge_store_receipts
+          Simplex.Chat.Store.Postgres.Migrations.M20261019_chat_layout
   else
       exposed-modules:
           Simplex.Chat.Archive
@@ -354,6 +355,7 @@ library
           Simplex.Chat.Store.SQLite.Migrations.M20261012_delivery_job_notification
           Simplex.Chat.Store.SQLite.Migrations.M20261016_badge_store_receipts
           Simplex.Chat.Store.SQLite.Migrations.M20261018_autoincrement_ids
+          Simplex.Chat.Store.SQLite.Migrations.M20261019_chat_layout
   other-modules:
       Paths_simplex_chat
   hs-source-dirs: