Improve ghostwriter output language guidance (#248)

docs-site/docs/features/ghostwriter.md

@@ -27,6 +27,7 @@ Typical use cases:
 - cover letter and outreach drafts
 - interview prep tied to the job description
 - rephrasing with tone constraints
+- multilingual drafting when you want replies in a specific language
 
 ## How to use it
 
@@ -44,6 +45,10 @@ Global settings affecting generations:
 - `Constraints`
 - `Do-not-use terms`
 
+Ghostwriter follows the output language you request in your prompt. For example, `Ecris en français` should produce a French reply.
+
+If you want a persistent default language, put it in `Constraints`, for example: `Always respond in French.`
+
 `Do-not-use terms` are passed as guidance in the prompt. They are not enforced by a hard post-generation filter, so the model should avoid them but may still use them occasionally.
 
 Defaults:
@@ -80,6 +85,7 @@ Compatibility thread endpoints remain, but UI behavior is one thread per job.
 
 - Check model/provider configuration in Settings.
 - Tighten prompts with explicit output intent (for example, "3 bullet points for recruiter outreach").
+- If you need a non-English response every time, add that language requirement to `Constraints`.
 
 ### Missing context in answers
 

docs-site/docs/features/settings.md

@@ -73,6 +73,7 @@ Settings gives you runtime overrides for the key parts of discovery, scoring, ta
   - Constraints
   - Do-not-use terms
 - These settings apply to Ghostwriter and resume tailoring
+- `Constraints` can also set a default output language, for example `Always respond in French.`
 - Do-not-use terms are model guidance, not a guaranteed output filter
 
 ### Reactive Resume