journal: multi-select emotions and per-category writing templates

- Mood switches from a single enum column to a many-to-many
  JournalEntryMood table so an entry can carry several feelings at
  once; the vocabulary is trimmed to 9 named emotions (dropped the
  overlapping satisfaction scale) with unified noun-style labels.
- Categories can define a content_template that pre-fills the "new
  entry" textarea when selected (only if the user hasn't started
  typing), seeded with a Story/Feelings/Decisions/Insights/Actions
  reflection template on the default "일상" category.
- Fixes a real attribute-injection bug found while building the
  template feature: Jinja's built-in |tojson filter doesn't escape
  double quotes, which breaks a double-quoted x-data="..." attribute
  when the JSON payload contains one; added |forceescape and a
  regression test.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/services/journal_service.py

@@ -34,6 +34,27 @@ ALLOWED_IMAGE_TYPES = {"image/jpeg", "image/png", "image/webp", "image/gif"}
 ALLOWED_VIDEO_TYPES = {"video/mp4", "video/quicktime"}
 THUMBNAIL_WIDTH = 400
 DEFAULT_CATEGORY_NAME = "일상"
+DEFAULT_CATEGORY_TEMPLATE = """**1. Story : 오늘 무슨 일이 있었나요?**
+
+-
+
+**2. Feelings : 오늘 들었던 생각과 나의 감정은?**
+
+-
+
+**3. Decisions : 오늘 내가 내린 결정이 있나요?**
+
+-
+
+**4. Insights : 나에 대해 새롭게 알게된 사실이 있나요?**
+
+-
+
+→ 나에 대한 인사이트는 메타인지를 키워주는 **소중한 기록**입니다. 꼭 보관하세요.
+
+**5. Actions : 내가 다음에 할 행동은 무엇인가요?**
+
+- """
 
 
 # ---- 카테고리 ----
@@ -54,7 +75,9 @@ def get_category(db: Session, category_id: int, user_id: int) -> JournalCategory
 
 
 def create_category(db: Session, user_id: int, data: JournalCategoryCreate) -> JournalCategory:
-    category = JournalCategory(user_id=user_id, name=data.name, color=data.color)
+    category = JournalCategory(
+        user_id=user_id, name=data.name, color=data.color, content_template=data.content_template
+    )
     db.add(category)
     db.commit()
     db.refresh(category)
@@ -64,6 +87,7 @@ def create_category(db: Session, user_id: int, data: JournalCategoryCreate) -> J
 def update_category(db: Session, category: JournalCategory, data: JournalCategoryCreate) -> JournalCategory:
     category.name = data.name
     category.color = data.color
+    category.content_template = data.content_template
     db.commit()
     db.refresh(category)
     return category
@@ -79,7 +103,9 @@ def ensure_default_category(db: Session, user_id: int) -> JournalCategory:
     )
     if existing is not None:
         return existing
-    return create_category(db, user_id, JournalCategoryCreate(name=DEFAULT_CATEGORY_NAME))
+    return create_category(
+        db, user_id, JournalCategoryCreate(name=DEFAULT_CATEGORY_NAME, content_template=DEFAULT_CATEGORY_TEMPLATE)
+    )
 
 
 def reorder_categories(db: Session, user_id: int, ordered_ids: list[int]) -> None: