ECHO-712 Enhance verification artifact generation with project language support

echo/server/dembrane/api/verify.py

@@ -878,11 +878,14 @@ async def generate_verification_artifacts(
             except Exception as exc:
                 logger.warning("Failed to attach audio chunk %s: %s", chunk_id, exc)
 
+    project_language = (conversation.get("project_id") or {}).get("language") or "en"
+
     system_prompt = render_prompt(
         "generate_artifact",
         "en",
         {
             "prompt": target_topic.prompt,
+            "language": project_language,
         },
     )
 
@@ -973,6 +976,9 @@ async def update_verification_artifact(
         reference_conversation_id = body.use_conversation.conversation_id
         reference_timestamp = body.use_conversation.timestamp
 
+        conversation = await _get_conversation_with_project(reference_conversation_id, client)
+        project_language = (conversation.get("project_id") or {}).get("language") or "en"
+
         chunks = await _get_conversation_chunks(reference_conversation_id, client)
 
         conversation_transcript = _build_transcript_text(chunks)
@@ -995,6 +1001,7 @@ async def update_verification_artifact(
                 "transcript": conversation_transcript or "No transcript available.",
                 "outcome": artifact.get("content") or "",
                 "feedback": feedback_text or "No textual feedback available.",
+                "language": project_language,
             },
         )
 

echo/server/prompt_templates/generate_artifact.en.jinja

@@ -1,13 +1,17 @@
 You will receive a conversation transcript (and optionally audio fragments). Turn it into a concrete outcome that captures key decisions or insights.
+
+Project language: {{ language }}
+Your entire response MUST be written in {{ language }}. The participants expect to read the outcome in this language.
+
 Specific Ask:
 {{ prompt }}
+
 Guidelines:
 
 Start with a clear title that reflects what was discussed
 Skip preambles—go directly to the outcome
 Use "we/our" language for collective ownership
 Be concise but complete enough to stand alone
 Include context for future readers
-Match the transcript's language
 Acknowledge uncertainty when present
 Make it feel worth signing—true, not perfect

echo/server/prompt_templates/revise_artifact.en.jinja

@@ -4,6 +4,9 @@ A conversation transcript
 An outcome artifact summarizing that conversation
 Participant feedback on the outcome
 
+Project language: {{ language }}
+Your entire response MUST be written in {{ language }}. The participants expect to read the revised outcome in this language.
+
 Transcript:
 {{ transcript }}
 Outcome:
@@ -19,5 +22,5 @@ Integrate all changes naturally into the main content—don't append meta-commen
 Address whatever participants need: add missing details, clarify ambiguities, expand on nuances, or correct errors
 State what something is, not what it isn't (avoid "X is not Y" unless essential)
 Maintain coherent structure even when adding depth or detail
-Match the original language and tone
+Maintain the original tone
 Remove any references to the feedback process itself