Рабочий вариант

README.md

@@ -1,3 +1,6 @@
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 # RAG Agent (Postgres)
 
 Custom RAG agent that indexes text files from a git repository into Postgres
@@ -14,7 +17,7 @@ and answers queries using retrieval + LLM generation. **Changes are always in th
 2. Configure environment variables:
    - `RAG_REPO_PATH` — path to git repo with text files
    - `RAG_DB_DSN` — Postgres DSN (e.g. `postgresql://rag:rag_secret@localhost:5432/rag`)
-   - `RAG_EMBEDDINGS_DIM` — embedding vector dimension (e.g. `1536`)
+   - `RAG_EMBEDDINGS_DIM` — embedding vector dimension: **1024** for GigaChat Embeddings (default), 1536 for OpenAI
 3. Create DB schema (only if not using Docker, or if init was disabled):
    - `python scripts/create_db.py` (or `psql "$RAG_DB_DSN" -f scripts/schema.sql`)
 4. Index files for a story (e.g. branch name as story slug). Use the **full story range** so all commits in the story are included:
@@ -40,6 +43,35 @@ When the app runs as a service in Docker, it can start a **webhook server** so t
 
 Health check: `GET http://<host>:8000/health` → `ok`. Port is configurable via `WEBHOOK_PORT` (default 8000) in docker-compose.
 
+### Webhook diagnostics (202 Accepted but no new rows in DB)
+
+1. **Logs** — After a push, check app logs. Each webhook logs `pull_and_index started branch=… repo_path=…`; then one of:
+   - `not a git repo or missing` — `/data` in the container is not a git clone; clone the repo into the mounted dir.
+   - `git fetch failed` — SSH/network (see `docker/ssh/README.md`) or wrong remote.
+   - `git checkout … failed` — branch missing in the clone.
+   - `git merge --ff-only failed` — non–fast-forward (e.g. force-push); index is skipped. Use a normal push or re-clone.
+   - `no new commits for branch=…` — merge was a no-op (already up to date); nothing to index.
+   - `running index story=…` then `index completed` — index ran; check tables for that story.
+   - `index failed` — stderr shows the `rag-agent index` error (e.g. DB, embeddings, repo path).
+
+   ```bash
+   docker compose logs -f app
+   # or: docker logs -f rag-agent
+   ```
+   Trigger a push and watch for the lines above.
+
+2. **Story and tables** — Rows are per **story** (branch name). Query by story, e.g. `SELECT * FROM stories;` then `SELECT * FROM chunks WHERE story_id = (SELECT id FROM stories WHERE slug = 'main');`.
+
+3. **Manual index** — Run index inside the container to confirm DB and repo work:
+   ```bash
+   docker compose exec app rag-agent index --story main --changed --base-ref main --head-ref HEAD
+   ```
+   If this inserts rows, the issue is in the webhook path (fetch/merge/refs).
+
+4. **Allowed extensions** — Only `.md`, `.txt`, `.rst` (or `RAG_ALLOWED_EXTENSIONS`) are indexed; other files are skipped.
+
+5. **"expected 1536 dimensions, not 1024"** — GigaChat Embeddings returns 1024-dim vectors; the default is now 1024. If the DB was created earlier with vector(1536), drop and recreate the tables so the app can create them with 1024: `psql "$RAG_DB_DSN" -c "DROP TABLE IF EXISTS chunks; DROP TABLE IF EXISTS documents;"` then restart the app (ensure_schema will recreate the tables).
+
 ## Git hook (index on commit)
 
 Install the post-commit hook so changed files are indexed after each commit: