feat(nvim): add Notes authoring workflow

modules/home/programs/nvim/NOTES.md

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+# Notes authoring in Neovim
+
+This module provides a Neovim interface for the personal website's public Notes
+workflow. It is a native Lua integration and does not add a third-party plugin.
+
+The website repository remains the source of truth for Entry creation,
+validation, publication timestamps, media conversion, and builds. Neovim only
+calls the existing Bun scripts.
+
+## Requirements
+
+- The website repository is available at
+  `~/Development/MyWeb/magnum-opus/main`.
+- `direnv` is installed and the website `.envrc` is allowed.
+- The website development shell provides Bun.
+
+Set `RASYIDANAF_SITE_ROOT` before starting Neovim to use another checkout:
+
+```sh
+export RASYIDANAF_SITE_ROOT=/path/to/rasyidan-personal-web
+```
+
+## Commands and mappings
+
+The Notes group uses the local leader (`\`).
+
+| Command | Mapping | Action |
+| --- | --- | --- |
+| `:NotesNewLog` | `\nl` | Prompt for an optional title and tags, create a Log draft, and open it |
+| `:NotesNewNote` | `\nn` | Prompt for a required title and optional tags, create a Note draft, and open it |
+| `:NotesPublish` | `\np` | Save and publish the current Entry after confirmation |
+| `:NotesValidate` | `\nv` | Validate public Notes metadata, routes, lifecycle, tags, and media |
+| `:NotesBuild` | `\nb` | Run the complete production build |
+
+`NotesPublish` accepts only Markdown files inside `vault/public-notes/`. It
+does not commit, push, or deploy. Review the Jujutsu diff and push the website
+repository separately.
+
+## Normal workflow
+
+1. Press `\nl` for a Log or `\nn` for a titled Note.
+2. Write and save the Entry.
+3. Press `\np` and confirm publication.
+4. Press `\nv`, then `\nb`.
+5. Review, describe, and push the website change with Jujutsu.
+
+The publication command reloads the current buffer after the repository script
+writes `publishedAt` and processes referenced images.
+
+## Apply the configuration
+
+Home Manager owns the Neovim configuration. Apply dotfiles changes with:
+
+```sh
+cd ~/Development/dotfiles
+sudo darwin-rebuild switch --flake .#macbook-pro
+```