chore: release v1.0.7

Playout: slate fallback, strict ffprobe validation, Prometheus metrics
Chat: history on join, DM offline delivery, env-config rate limits,
  Redis auto-reconnect, heartbeat, ban/mute enforcement, DM metrics
Viewer: presence indicators, schedule overlay, public /api/schedule
Admin: playlist drag-reorder, schedule overrides CRUD, user actions,
  inline mod buttons, CSV export, config editor, restart buttons,
  upload normalization gate, analytics time range
nginx: CORS preflight, JSON health, stub_status
Docs: test-lab vs production distinction across all configs/docs
Infra: Redis maxmemory, CD health IP-agnostic, slate volume mount

SETUP.md

@@ -21,6 +21,42 @@ This guide covers prerequisites, environment setup, running the application loca
     - `DATABASE_URL`: The production database connection string (e.g., `postgres://linearvoid:<password>@db:5432/linearvoid?sslmode=disable`)
 - **Hetzner Cloud Account** (optional for production): For the US-East VPS (Ashburn, VA recommended per ADR-001).
 
+## Network Environments
+
+Linear Void operates in two distinct environments. Know which one you're targeting.
+
+```mermaid
+flowchart LR
+    subgraph Test_Lab["Test Lab (192.168.88.0/24)"]
+        TEST_HOST["192.168.88.40<br/>Docker Engine :2375"]
+    end
+
+    subgraph Prod["Production (Hetzner — NOT provisioned)"]
+        PROD_HOST["Hetzner CX22 Ashburn, VA<br/>Public IP TBD"]
+    end
+
+    subgraph Gitea["Gitea CI/CD"]
+        CI["CI: build + push images"]
+        CD["CD: deploy via DOCKER_HOST"]
+    end
+
+    subgraph CF["Cloudflare"]
+        DNS["linearvoid.tv"]
+        R2["R2 Bucket"]
+    end
+
+    CD -->|"DOCKER_HOST=tcp://192.168.88.40:2375"| TEST_HOST
+    CD -.->|"DOCKER_HOST=tcp://&lt;hetzner-ip&gt;:2375<br/>(when provisioned)"| PROD_HOST
+    TEST_HOST -->|"test traffic"| DNS
+    PROD_HOST -.->|"production traffic"| DNS
+    TEST_HOST --> R2
+    PROD_HOST -.-> R2
+```
+
+**Test Lab (active):** Internal network `192.168.88.0/24`, host `192.168.88.40`. Receives automated CD deploys from Gitea Actions. Used for integration testing and staging validation.
+
+**Production (pending):** Hetzner Cloud VPS, Ashburn VA. Not yet provisioned. CD workflow and compose files are ready — only `DOCKER_HOST` needs changing. See `TODO.md` Production Deployment section.
+
 ## Development Prerequisites
 
 - **Frontend dependencies**: Run `cd frontend && npm install` before `npm run dev` or `npm run build`.