Implement install stages S0–S2: bootstrap, env, model and vision smoke.

Operator can run make bootstrap/install through S2 using nemohermes/openshell wrappers; docs and implement queue updated. No S3+ and no push.

.env.example

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+# Salon_Assistant / Lumina — environment configuration
+# Copy to .env and fill in real values. NEVER commit .env with real secrets.
+# See docs/INSTALL.md § S1 for details.
+
+# ── Sandbox identity ───────────────────────────────────────────────────────
+# NemoClaw sandbox name (used by nemohermes commands). Default: hermes
+LUMINA_SANDBOX=hermes
+
+# ── Inference (main model) ────────────────────────────────────────────────
+# OpenAI-compatible endpoint base URL (trailing slash optional).
+# Example: local llama.cpp server, remote API, etc.
+LUMINA_INFERENCE_BASE_URL=http://192.168.1.203:8083/v1
+
+# Model identifier on the inference endpoint (must match what the server advertises).
+LUMINA_INFERENCE_MODEL=/home/ty/models/qwen36-27b-mtp-gguf/Qwen3.6-27B-UD-Q4_K_XL.gguf
+
+# API key for the inference endpoint. Leave empty if the endpoint is unauthenticated.
+LUMINA_INFERENCE_API_KEY=
+
+# ── Vision (auxiliary model) ───────────────────────────────────────────────
+# Vision-capable model for social media / media understanding.
+# Often the same as LUMINA_INFERENCE_MODEL if the main model is multimodal.
+LUMINA_VISION_MODEL=/home/ty/models/qwen36-27b-mtp-gguf/Qwen3.6-27B-UD-Q4_K_XL.gguf
+
+# ── Gateway ────────────────────────────────────────────────────────────────
+# NemoClaw gateway URL (where OpenShell connects).
+LUMINA_GATEWAY_URL=https://127.0.0.1:8080
+
+# Dashboard port (for nemohermes dashboard-url).
+LUMINA_DASHBOARD_PORT=18789