diff --git a/.gitignore b/.gitignore
index 8e5c946..c958be0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 node_modules/
 dist/
-*.js
-*.js.map
+AGENTS.md
+.pi-lens
diff --git a/.pi-lens/cache/review-graph.json b/.pi-lenss/cache/review-graph.json
similarity index 100%
rename from .pi-lens/cache/review-graph.json
rename to .pi-lenss/cache/review-graph.json
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7ba9487
--- /dev/null
+++ b/README.md
@@ -0,0 +1,98 @@
+# Deep Research
+
+Multi-round deep web research powered by Firecrawl with iterative query refinement.
+
+```bash
+pi install npm:@mikefreno/deep-research
+```
+
+## Features
+
+- **Multi-round iteration**: Each round generates follow-up queries based on previous findings (depth 1-3)
+- **Parallel query expansion**: Multiple diverse search queries per round (breadth 1-5) covering technical, practical, comparative, critical, and forward-looking angles
+- **LLM-driven analysis**: Each round's results are analyzed by an agent session to extract structured findings with confidence ratings
+- **Automatic deduplication**: Search results are deduplicated by URL across all queries
+- **Graceful degradation**: Individual search or analysis failures don't crash the full research — partial results are preserved
+- **Progress streaming**: Real-time progress widget with spinner, phase indicators, and progress bar
+- **Abort support**: Research can be cancelled mid-flight via `AbortSignal`
+- **Rich TUI rendering**: Compact collapsed view and detailed expanded view in the terminal UI
+- **Fallback resilience**: Built-in fallback query generation and report synthesis when LLM calls fail
+
+## Usage
+
+### Tool (LLM-callable)
+
+Registers the `deep_research` tool for AI agent use:
+
+```
+deep_research — multi-round deep web research via Firecrawl with iterative query refinement
+```
+
+Parameters:
+| Parameter | Type | Default | Description |
+|-----------|------|---------|-------------|
+| `question` | string | — | The research question to investigate |
+| `depth` | integer (1-3) | 2 | Number of research rounds |
+| `breadth` | integer (1-5) | 3 | Search queries per round |
+| `format` | "markdown" \| "structured" | "markdown" | Output format for the report |
+| `details.showRoundDetails` | boolean | false | Include per-round search metadata in output |
+
+### Command (interactive)
+
+```
+/deep-research <your research question>
+```
+
+Prompts for depth (1-3 rounds) and breadth (1-5 queries) interactively, then runs the research and sends the final report as a user message.
+
+### Recommended usage
+
+- Use `deep_research` for complex, multi-faceted questions that benefit from multiple search angles and iterative refinement.
+- The tool handles query generation, web search, result analysis, and report synthesis automatically.
+- For simple fact-finding questions, use `firecrawl_search` directly instead.
+
+## Architecture
+
+```
+Research Flow:
+
+  Question
+     ↓
+  ┌─ Round 1 ───────────────────────────┐
+  │  LLM → generate queries (N angles)   │
+  │  Firecrawl → search each query       │
+  │  LLM → analyze results → findings    │
+  └──────────────┬───────────────────────┘
+                 ↓ (follow-up queries)
+  ┌─ Round 2 ───────────────────────────┐
+  │  LLM → identify knowledge gaps       │
+  │  Firecrawl → search follow-ups       │
+  │  LLM → analyze → new findings        │
+  └──────────────┬───────────────────────┘
+                 ↓ (iterate depth times)
+  ┌─ Synthesis ─────────────────────────┐
+  │  LLM → synthesize all findings       │
+  │  → comprehensive research report     │
+  └─────────────────────────────────────┘
+```
+
+## Configuration
+
+Deep Research reads Firecrawl configuration from `~/.pi/agent/settings.json`:
+
+```json
+{
+  "firecrawl": {
+    "baseUrl": "http://localhost:3002",
+    "apiKey": "your-api-key"
+  }
+}
+```
+
+Environment variables are also supported:
+- `FIRECRAWL_BASE_URL` — overrides the Firecrawl endpoint (default: `http://localhost:3002`)
+- `FIRECRAWL_API_KEY` — API key for authenticated Firecrawl instances
+
+### Session startup check
+
+On `session_start`, the extension checks whether the Firecrawl endpoint is reachable. If not, it shows a warning notification so you know searches will fail before you try to use it.