docs: update docs and README for Dragonfly and new structure

apps/docs/getting-started/configuration.md

@@ -7,28 +7,28 @@ description: All environment variables for TRAWL, with defaults and examples.
 
 All configuration is via environment variables. Copy `.env.example` to `.env` and edit before starting.
 
-## Redis
+## Dragonfly
 
 ### `REDIS_URL`
 
 **Default:** `redis://localhost:6379`
 
-Standard Redis connection URL. When running inside Docker Compose use the service name:
+Standard Redis-protocol connection URL — TRAWL's default cache backend is [Dragonfly](https://www.dragonflydb.io/), which is wire-compatible with Redis, so the URL scheme and env var name are unchanged. When running inside Docker Compose use the service name:
 
 ```ini
-REDIS_URL=redis://redis:6379
+REDIS_URL=redis://dragonfly:6379
 ```
 
 With authentication:
 
 ```ini
-REDIS_URL=redis://:yourpassword@redis:6379
+REDIS_URL=redis://:yourpassword@dragonfly:6379
 ```
 
 With a specific database index:
 
 ```ini
-REDIS_URL=redis://redis:6379/1
+REDIS_URL=redis://dragonfly:6379/1
 ```
 
 ## Browser Pool
@@ -91,7 +91,7 @@ BROWSER_CONTENT_PROCESSES=4   # raise if CF/Imperva challenges stall
 
 **Default:** `3600` (1 hour)
 
-How long Cloudflare cookies are cached in Redis per domain. After this TTL the next request to the domain triggers a fresh challenge solve (Tier 3) and refreshes the cache.
+How long Cloudflare cookies are cached in Dragonfly per domain. After this TTL the next request to the domain triggers a fresh challenge solve (Tier 3) and refreshes the cache.
 
 Cloudflare's `cf_clearance` cookie typically has a 30-minute expiry. Setting `SESSION_TTL_SECONDS` below 1800 wastes cache hits; setting it above 7200 risks replaying expired cookies (TRAWL handles this gracefully by invalidating the cache and falling back to Tier 3).
 
@@ -176,7 +176,7 @@ Port the Nuxt landing page listens on.
 ## Full `.env.example`
 
 ```ini
-# ── Redis ─────────────────────────────────────
+# ── Dragonfly ─────────────────────────────────
 REDIS_URL=redis://localhost:6379
 
 # ── Browser pool ──────────────────────────────

apps/docs/getting-started/local-development.md

@@ -12,7 +12,7 @@ TRAWL is a Bun workspace monorepo. You can run each service locally with hot-rel
 | Tool | Version | Install |
 |------|---------|---------|
 | Bun | ≥ 1.2 | `curl -fsSL https://bun.sh/install \| bash` |
-| Redis | 7+ | Docker (see below) or system package |
+| Dragonfly | 1.39+ | Docker (see below) — Redis-protocol compatible |
 
 ## 1. Install dependencies
 
@@ -33,13 +33,13 @@ bun x camoufox-js fetch
 
 This downloads the browser into the local cache. It only needs to run once per machine.
 
-## 3. Start Redis
+## 3. Start Dragonfly
 
 ```bash
-docker run -d --name trawl-redis -p 6379:6379 redis:7-alpine
+docker run -d --name trawl-dragonfly -p 6379:6379 docker.dragonflydb.io/dragonflydb/dragonfly:v1.39.0
 ```
 
-Or use a local Redis installation if you have one.
+Or use any Redis-protocol-compatible server you already have — Dragonfly speaks the same wire protocol.
 
 ## 4. Create your `.env`
 
@@ -92,8 +92,8 @@ trawl/
 │   ├── types/       Shared TypeScript interfaces — no runtime logic
 │   ├── browser/     BrowserPool + SessionCache
 │   └── tiers/       Tier 1–4 executors + orchestrator
-├── docker-compose.yml          scraper + Redis (default)
-├── docker-compose.minimal.yml  scraper only, no Redis
+├── docker-compose.yml          scraper + Dragonfly (default)
+├── docker-compose.minimal.yml  scraper only, no Dragonfly
 ├── docker-compose.prod.yml     production with restart + healthcheck
 └── docker-compose.full.yml     full stack including web + docs
 ```

apps/docs/getting-started/quick-start.md

@@ -32,7 +32,7 @@ This starts three containers:
 
 | Container | Purpose                 | Port     |
 | --------- | ----------------------- | -------- |
-| `redis`   | Session cache backend   | internal |
+| `dragonfly` | Session cache backend | internal |
 | `api`     | Browser pool + HTTP API | 8191     |
 | `web`     | Landing page & docs UI  | 3000     |