AI skills: suggestion to limit the number of PRs (#9141)

* AI skills: suggestion to limit the number of PRs

* review comments

* tweak phrasing

* Bump to 10

---------

Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

.github/skills/freshrss-i18n/SKILL.md

@@ -31,3 +31,7 @@ When adding a new UI element:
 	```php
 	<button><?= _t('gen.action.my_new_button') ?></button>
 	```
+
+## Machine translation
+
+**Note:** Do not complete translations unless explicitly instructed by the user. Ask for approval and point out that unless the user intends to review the result, translations may be inaccurate. Translate only as a last resort, and only if the user approves.

AGENTS.md

@@ -20,6 +20,7 @@ More information can be found in [README](README.md) and in the [documentation](
 * **`AGENTS.md`** is the entry point description for AI coding agents and contributors, referencing other documents such as instructions and skills.
 * Favour standard conventions over vendor-specific ones.
 * To reduce duplication, refer to enforceable configuration files instead of excessive free-text repetitions.
+* **Note:** Please limit AI-assisted pull requests to **10 open at a time** per contributor.
 
 ## Code structure
 

docs/en/contributing.md

@@ -74,3 +74,7 @@ This checklist is designed to ensure high-quality system themes while minimizing
 * Utilize CSS variables for colors to facilitate easy color adjustments with [CustomCSS extension](https://github.com/FreshRSS/Extensions).
 * Implement a dark mode that aligns with the `.darkMode` CSS class.
 * To streamline maintenance, avoid using CSS preprocessors; instead, employ well-structured plain CSS.
+
+## AI-assisted pull requests
+
+**Note:** Please limit AI-assisted pull requests to **10 open at a time** per contributor.