Delete local conversations atomically, retain replay protection and sequence counters, and guard asynchronous media work by history generation. Add Android avatar menu and confirmation, persistent file cleanup, and regression coverage.
Fix unnamed member wire padding and compact Android member action spacing.
Validation: 158 core tests passed; targeted DM tests, desktop build, Android unit tests and debug APK build passed.
Refresh both AGENTS guides and clarify module purpose, usage, ownership, threading, return values and wire formats in headers. Remove the unused timeout_heap freed_count field and unimplemented getter.
- media cache: удаление сирот на старте (сверка ФС с сообщениями) + лимит
storage_total_size (удаление самых старых файлов, только старше backfill_days)
- ma_dir_walk(): кроссплатформенный рекурсивный обход каталога (POSIX/Windows)
- async_dns: первый драйв slow-пути отложен через call_soon (исключён
double-free при синхронном завершении запроса); cancel унифицирован
- chat: видимый WARN 'media too large' + честный счётчик started/skipped
- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll
- stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close
- utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP),
add deferred drain in both Phase J and L
- stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39,
exchange ed25519_pubkey in both handshake directions
- etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in
etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb
- chat_sync.c: fix lk->conn NULL dereference for TCP links
- test_stcp.c: update stcp_server_create/stcp_client_connect callsites
- tools/chat_tcp_test: change transport udp→tcp
evgeny