Add custom nodes, Civitai loras (LFS), and vast.ai setup script

Includes 30 custom nodes committed directly, 7 Civitai-exclusive
loras stored via Git LFS, and a setup script that installs all
dependencies and downloads HuggingFace-hosted models on vast.ai.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom_nodes/comfyui-image-saver/README.md

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+[!] Forked from https://github.com/giriss/comfy-image-saver, which seems to be inactive since a while.
+
+# Save image with generation metadata in ComfyUI
+
+Allows you to save images with their **generation metadata**. Includes the metadata compatible with *Civitai* geninfo auto-detection. Works with PNG, JPG and WEBP. For PNG stores both the full workflow in comfy format, plus a1111-style parameters. For JPEG/WEBP only the a1111-style parameters are stored. **Includes hashes of Models, LoRAs and embeddings for proper resource linking** on civitai.
+
+You can find the example workflow file named `example-workflow.json`.
+<img width="1288" height="1039" alt="workflow" src="https://github.com/user-attachments/assets/dbbb9f67-afa3-48a2-8cd3-e4116393f8e0" />
+
+You can also add LoRAs to the prompt in \<lora:name:weight\> format, which would be translated into hashes and stored together with the metadata. For this it is recommended to use `ImpactWildcardEncode` from the fantastic [ComfyUI-Impact-Pack](https://github.com/ltdrdata/ComfyUI-Impact-Pack). It will allow you to convert the LoRAs directly to proper conditioning without having to worry about avoiding/concatenating lora strings, which have no effect in standard conditioning nodes. Here is an example:
+![workflow](https://github.com/user-attachments/assets/61440fac-f1d5-414b-ae69-dbdda9d6d442)
+
+This would have civitai autodetect all of the resources (assuming the model/lora/embedding hashes match):
+![image](https://github.com/alexopus/ComfyUI-Image-Saver/assets/25933468/f0642389-4f34-4a64-89a6-5cf9c33d5ed1)
+
+## How to install?
+
+### Method 1: Manager (Recommended)
+If you have *ComfyUI-Manager*, you can simply search "**ComfyUI Image Saver**" and install these custom nodes.
+
+### Method 2: Easy
+If you don't have *ComfyUI-Manager*, then:
+- Using CLI, go to the ComfyUI folder
+- `cd custom_nodes`
+- `git clone git@github.com:alexopus/ComfyUI-Image-Saver.git`
+- `cd ComfyUI-Image-Saver`
+- `pip install -r requirements.txt`
+- Start/restart ComfyUI
+
+## Customization of file/folder names
+
+You can use following placeholders:
+
+- `%date`
+- `%time` *– format taken from `time_format`*
+- `%time_format<format>` *– custom datetime format using Python strftime codes*
+- `%model` *– full name of model file*
+- `%basemodelname` *– name of model (without file extension)*
+- `%seed`
+- `%counter`
+- `%sampler_name`
+- `%scheduler`
+- `%steps`
+- `%cfg`
+- `%denoise`
+
+Example:
+
+| `filename` value | Result file name |
+| --- | --- |
+| `%time-%basemodelname-%cfg-%steps-%sampler_name-%scheduler-%seed` | `2023-11-16-131331-Anything-v4.5-pruned-mergedVae-7.0-25-dpm_2-normal-1_01.png` |
+| `%time_format<%Y%m%d_%H%M%S>-%seed` | `20231116_131331-1.png` |
+| `%time_format<%B %d, %Y> %basemodelname` | `November 16, 2023 Anything-v4.5.png` |
+| `img_%time_format<%Y-%m-%d>_%seed` | `img_2023-11-16_1.png` |
+
+**Common strftime format codes for `%time_format<format>`:**
+
+| Code | Meaning | Example |
+|------|---------|---------|
+| `%Y` | Year (4-digit) | 2023 |
+| `%y` | Year (2-digit) | 23 |
+| `%m` | Month (01-12) | 11 |
+| `%B` | Month name (full) | November |
+| `%b` | Month name (short) | Nov |
+| `%d` | Day (01-31) | 16 |
+| `%H` | Hour 24h | 13 |
+| `%I` | Hour 12h | 01 |
+| `%M` | Minute | 13 |
+| `%S` | Second | 31 |
+| `%p` | AM/PM | PM |
+| `%A` | Weekday (full) | Thursday |
+| `%a` | Weekday (short) | Thu |
+| `%F` | YYYY-MM-DD | 2023-11-16 |
+| `%T` | HH:MM:SS | 13:13:31 |