Remove REGISTRY-SUBMIT.md (publishing handled directly via comfy-cli)

.comfyignore

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 __pycache__/
 tests/
-REGISTRY-SUBMIT.md
 .comfyignore

REGISTRY-SUBMIT.md

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-# Submitting ComfyUI-HiCache to the Comfy Registry
-
-Status: the node is GPU-validated end-to-end (see README, *Validated on*) and
-version 0.2.0 is ready to publish. Everything below the "human-only" line is
-prepared; the two human-only steps need Krishi's browser login.
-
-## What is already in place
-
-* `pyproject.toml` has the required `[project]` fields (`name`,
-  `description`, `version = "0.2.0"`, `license`, `dependencies`) and the
-  `[tool.comfy]` block:
-  * `PublisherId = "archerkattri"`
-  * `DisplayName = "ComfyUI-HiCache"`
-* `.comfyignore` excludes tests and tooling files from the published package.
-* The repo is public at `https://github.com/Archerkattri/ComfyUI-HiCache`.
-
-## Human-only steps (browser, one time)
-
-1. Create the publisher account: go to https://registry.comfy.org, log in,
-   and create a publisher. The publisher ID is the part after the `@` on the
-   profile page; it is globally unique and immutable. It MUST be
-   `archerkattri` to match `pyproject.toml`. If that ID is taken, pick
-   another and update `PublisherId` in `pyproject.toml` before publishing.
-2. Create an API key: registry nodes section -> select the publisher ->
-   create a new API key. Name it (for example `comfyui-hicache-publish`) and
-   store it safely; lost keys cannot be recovered, only replaced.
-
-## Publish (CLI, after the human-only steps)
-
-```bash
-pip install comfy-cli            # if not already installed
-cd ComfyUI-HiCache               # repo root, where pyproject.toml lives
-comfy node publish               # prompts for the API key
-```
-
-Expected confirmation: `Version 0.2.0 Published.` The node then appears at
-`https://registry.comfy.org/publishers/archerkattri/nodes/comfyui-hicache`
-and becomes installable through ComfyUI-Manager once the registry index
-picks it up.
-
-Do NOT use the registry's GitHub Actions auto-publish flow
-(`publish_action.yml` + `REGISTRY_ACCESS_TOKEN` secret): this repo
-deliberately carries no CI. Publish from the CLI for each release.
-
-## Releasing future versions
-
-1. Bump `version` in `pyproject.toml` AND `__version__` in `__init__.py`
-   (keep them identical, semver).
-2. Run the tests: `pytest` (38 must pass).
-3. Commit, push, then `comfy node publish` again with the same API key.