After-Ready conversation was going to /dev/null. With this change every
inbound Telegram text + every bot response is persisted to a SQLite +
FTS5 archive via the existing kei-chat-store primitive (no new crate).
Each Telegram chat_id maps 1:1 to a kei-chat-store session
(project="kei-buddy", title="tg-<chat_id>", model="telegram"). Cache
prevents per-message session lookups.
New file:
* src/chat_log.rs (198 LOC) — ChatLog adapter wrapping
kei_chat_store::Store + a chat_id→session_id Mutex cache.
API: from_path / from_memory / ensure_session / log_user /
log_bot / search(query, chat_id?, limit). Errors map to
BuddyError::Memory and never propagate from on_event — chat-log
failure is logged but does not block the conversation.
Modified:
* Cargo.toml — kei-chat-store path dep added.
* src/lib.rs — pub mod chat_log + re-export ChatLog.
* src/serve.rs — BuddyContext gains Arc<ChatLog>;
process_text calls log_user before handle_step + log_bot after
send_message; ServeConfig gains chat_log_db_path.
* src/bin/kei-buddy.rs — KEI_BUDDY_CHAT_LOG_PATH env
(default ./kei-buddy-chat.db); migrate subcommand applies the
chat-store schema alongside buddy_state schema.
Tests (3 new in src/chat_log.rs, all pass):
* log_user_creates_session_and_message
* log_bot_uses_same_session_as_log_user
* different_chats_get_different_sessions
Verify-before-commit:
* cargo check -p kei-buddy (default): PASS
* cargo check -p kei-buddy --features extractor-openai: PASS
* cargo test -p kei-buddy --lib: 23 passed / 0 failed
(was 20 before this commit; 3 new ChatLog tests)
NOT deployed — user is in active conversation with the live bot.
Will roll forward when user signals readiness.
Two additions on top of the MVP serve binary:
1. Whitelist by chat_id (KEI_BUDDY_ALLOWED_CHAT_IDS env, CSV).
* BuddyContext gains Arc<Option<Vec<i64>>> allowed_chat_ids
* chat_allowed() check fires before process_text
* Non-whitelisted chats: warn-log + ignore (no response sent)
* None or empty list = accept all (back-compat with prior behaviour)
2. Real LLM wiring (KEI_BUDDY_LLM_PROXY / _LLM_KEY / _LLM_MODEL).
* When extractor-openai feature compiled in AND both proxy+key set,
run_serve instantiates OpenAiExtractor instead of MockExtractor
* Defaults: proxy=https://api.openai.com, key=OPENAI_API_KEY env,
model=gpt-4o-mini
* Fallback: warns + MockExtractor (state machine still walks, but
LLM-extracted fields are empty)
* extractor::OpenAiExtractor gains new_with_model(proxy, key, model);
model is now per-instance instead of compile-time DEFAULT_MODEL
3. start_listener extracted as helper — keeps run_serve readable across
the two feature-gated branches.
Verify-before-commit:
* cargo check -p kei-buddy (default): PASS
* cargo check -p kei-buddy --features extractor-openai: PASS
* cargo test -p kei-buddy --lib: 20/0 unchanged
Parfii-bot