Add platform poster header text settings

RAA.md

@@ -1,6 +1,6 @@
 # RAA deployment
 
-Last updated: 2026-08-03.
+Last updated: 2026-08-04.
 
 RAA is not a separate code project anymore. The source of truth for code and
 documentation is:
@@ -23,7 +23,7 @@ continue feature work there.
 - Coolify git branch: `main`
 - Postgres container: `m9v14hzfh5mk9kelxzcqvhc6`
 - Postgres DB/user: `raa_parser` / `raa_parser_user`
-- Destination: `vk-parser-lxc`, CTID `105`, IP `192.168.1.105`
+- Destination: `raa-fn8`, CTID `105`, IP `192.168.1.105`
 - Edge proxy: Caddy in CTID `110` proxies `raa.panel.f-n8.ru` to Coolify Traefik at `192.168.1.105:80`
 - Health check: `https://raa.panel.f-n8.ru/health`
 
@@ -55,6 +55,11 @@ Database settings:
 - `vk_poster_access_token` is the RAA community token
 - `site_poster_enabled=false`
 - `site_poster_provider=""` until a website adapter is configured
+- Optional social text headers/footers:
+  - `tg_poster_header_text` / `tg_poster_footer_text`
+  - `vk_poster_header_text` / `vk_poster_footer_text`
+  - `max_poster_header_text` / `max_poster_footer_text`
+  Empty header/footer settings add nothing.
 
 ## Workers
 
@@ -103,6 +108,11 @@ automatic rejection of non-target content.
 
 ## Deployment Notes
 
+Legacy CT cleanup:
+
+- CT `107` (`raa-parser-poster`) was stopped and removed on 2026-08-04.
+- CT `104` (`raa-sender`) is not an error: it still runs the legacy VK reposting app (`vk-reposter`) and can legitimately post to its configured Telegram channel.
+
 To deploy code changes for both FN-8 and RAA:
 
 1. Work only in `D:\DEVELOPMENT\new_vk_parser`.