add editorconfig and quota section to readme

Author: jdwit

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+max_line_length = 100
+
+[*.{yml,yaml,toml}]
+indent_size = 2

README.md

@@ -11,10 +11,11 @@ Manage and analyze your YouTube channel from the terminal. Ideal for automation
 
 ## Motivation
 
-I built this because I needed to bulk update video titles for a YouTube channel I manage with 300+ videos. YouTube 
-Studio does not support bulk search-replace operations, which made it a tedious manual process. This tool uses the 
-YouTube Data API to perform bulk operations on video metadata. Furthermore, it provides features for analytics and 
-comment moderation, all accesible from the command line.
+I built this because I needed to bulk update video titles for a YouTube channel I manage with 300+
+videos. YouTube Studio does not support bulk search-replace operations, which made it a tedious
+manual process. This tool uses the YouTube Data API to perform bulk operations on video metadata.
+Furthermore, it provides features for analytics and comment moderation, all accesible from the
+command line.
 
 ## Installation
 
@@ -27,19 +28,19 @@ uv tool install ytstudio-cli
 ## Setup
 
 1. Create a [Google Cloud project](https://console.cloud.google.com/)
-2. Enable **YouTube Data API v3** and **YouTube Analytics API**
-3. Configure OAuth consent screen:
+1. Enable **YouTube Data API v3** and **YouTube Analytics API**
+1. Configure OAuth consent screen:
    - Go to **APIs & Services** → **OAuth consent screen**
    - Select **External** and create
    - Fill in app name and your email
    - Skip scopes, then add yourself as a test user
    - Leave the app in "Testing" mode (no verification needed)
-4. Create OAuth credentials:
+1. Create OAuth credentials:
    - Go to **APIs & Services** → **Credentials**
-   - Click **Create Credentials** → **OAuth client ID**
+   - Click **Create Credentials** → **OAuth client ID**how
    - Select **Desktop app** as application type
    - Download the JSON file
-5. Configure ytstudio:
+1. Configure ytstudio:
 
 ```bash
 ytstudio init --client-secrets path/to/client_secret_<id>.json
@@ -48,7 +49,21 @@ ytstudio login
 
 Credentials stored in `~/.config/ytstudio/`.
 
+## API quota
+
+The YouTube Data API enforces a default quota of 10_000 units per project per day. Most read
+operations (listing videos, comments, channel info) cost 1 unit, while write operations like
+updating video metadata or moderating comments cost 50 units each. Bulk updates can consume quota
+quickly. When exceeded, the API returns a 403 error; quota resets at midnight Pacific Time.
+
+You can request a quota increase via **IAM & Admin** → **Quotas** in the
+[Google Cloud Console](https://console.cloud.google.com/). See the
+[official quota documentation](https://developers.google.com/youtube/v3/getting-started#quota) for
+full details.
+
 ## Disclaimer
 
-This project is not affiliated with or endorsed by Google. YouTube and YouTube Studio are trademarks of Google.
-All channel data is accessed exclusively through the official [YouTube Data API](https://developers.google.com/youtube/v3) and [YouTube Analytics API](https://developers.google.com/youtube/analytics).
+This project is not affiliated with or endorsed by Google. YouTube and YouTube Studio are trademarks
+of Google. All channel data is accessed exclusively through the official
+[YouTube Data API](https://developers.google.com/youtube/v3) and
+[YouTube Analytics API](https://developers.google.com/youtube/analytics).