Add LoRA import script and InvokeAI usage guide

Adds invokeai-import-lora.sh to copy LoRA .safetensors files directly
into InvokeAI's Docker model volume, bypassing the greyed-out UI upload
buttons. Also adds README documentation for LoRA usage and troubleshooting.

https://claude.ai/code/session_01RU7NQuTbA8S8NRoWojvhR5

README.md

@@ -65,6 +65,7 @@ sudo systemctl status local-ai
 | `ubuntu-post-install.sh` | 8,889 | Full Ubuntu 24.04 post-install (dev tools, fonts, apps, tweaks). Run once on a fresh OS install. Independent of the AI stack. |
 | `configure-storage.sh` | 239 | Storage/mount configuration helper. Run separately if you have a secondary drive for AI data. |
 | `kiwix_download.sh` | 198 | Downloads ZIM files (Wikipedia, Stack Overflow, etc.) for offline use. Run separately — files are large. |
+| `invokeai-import-lora.sh` | 85 | Copies a LoRA `.safetensors` file into InvokeAI's Docker model volume. |
 
 ### Which setup script should I use?
 
@@ -131,6 +132,38 @@ Both scripts are **idempotent** — safe to re-run for updates. Config files are
 
 ---
 
+## Using LoRA Models in InvokeAI
+
+LoRA (Low-Rank Adaptation) files let you customize image generation with fine-tuned styles or characters. If you trained a LoRA on RunPod or elsewhere, here's how to use it.
+
+### Import a LoRA file
+
+```bash
+# Copy your LoRA into the InvokeAI Docker volume:
+./invokeai-import-lora.sh ~/Downloads/my-lora.safetensors
+
+# Optionally give it a display name:
+./invokeai-import-lora.sh ~/Downloads/my-lora.safetensors "My Custom Style"
+```
+
+### Use the LoRA in InvokeAI
+
+1. Open InvokeAI at `http://<ip>:9090`
+2. Go to **Model Manager** (cube icon, left sidebar) and click **Scan for Models** / **Sync Models**
+3. Your LoRA should appear in the model list
+4. Switch to **Text to Image** tab
+5. In the left panel, find the **LoRA** section (below the model selector)
+6. Click **+** to add your LoRA, then adjust the **weight** slider (start at 0.7–0.85)
+
+### Troubleshooting greyed-out upload buttons
+
+- **No base model installed:** You need a fully downloaded base model (e.g., SD 1.5) before InvokeAI enables LoRA uploads. Use Model Manager to install one first.
+- **Model not synced:** After copying files, click **Scan for Models** in Model Manager.
+- **Architecture mismatch:** A LoRA trained on SD 1.5 only works with SD 1.5 base models — not SDXL or SD 2.x.
+- **Use the import script instead:** The greyed-out UI upload can be bypassed entirely by using `invokeai-import-lora.sh` to copy files directly into the model volume.
+
+---
+
 ## Updating
 
 Re-run the setup script — it detects an existing install and skips prereqs: