README.md

@@ -27,27 +27,22 @@ failure was fixed, not just papered over.
 ## Architecture
 
 Four small agents, each with one job, coordinated by plain Rust control
-flow — not a framework's agent graph, not an LLM deciding when to stop —
-plus an optional retrieval step when `--doc` documents are supplied:
+flow — not a framework's agent graph, not an LLM deciding when to stop:
 
 ```
-┌────────────┐   excerpts   ┌─────────────┐  approve/reject  ┌──────────┐
-│  retriever │ ───────────► │  researcher │ ───────────────► │ reviewer │
-│(--doc only)│              │ (tool-using)│ ◄─────────────── │          │
-└────────────┘              └──────┬──────┘   gaps/feedback  └────┬─────┘
+┌─────────────┐  approve/reject  ┌──────────┐
+│  researcher │ ───────────────► │ reviewer │
+│ (tool-using)│ ◄─────────────── │          │
+└──────┬──────┘   gaps/feedback  └────┬─────┘
        │ turn budget exhausted        │ approved,
        │ mid-investigation            │ or out of rounds
        ▼                              ▼
-                            ┌──────────────┐              ┌──────────────┐
-                            │ summarizer   │──findings───►│    writer    │──► report
-                            │ (recovery)   │              │              │
-                            └──────────────┘              └──────────────┘
+┌──────────────┐              ┌──────────────┐
+│ summarizer   │──findings───►│    writer    │──► report
+│ (recovery)   │              │              │
+└──────────────┘              └──────────────┘
 ```
 
-- **retriever** (only when `--doc` paths are given) — chunks and embeds
-  user-supplied documents with a dedicated embedding model, then retrieves
-  the excerpts most relevant to the topic once up front and folds them into
-  the researcher's task, cited with the same footnote scheme as web sources.
 - **researcher** — a tool-calling agent (`search_web`, `fetch_page`) that
   gathers and cross-checks evidence, capped at a fixed model-call budget so
   a confused model can't loop forever.