enlarge journal calendar cells and pair day/title on one line

- calendar-cell-journal: bump min-height 44px -> 76px, scale up date/dot/title font sizes
- journal calendar titles were centered; left-align them
- rework JournalCalendarDay: replace separate category_colors/titles lists
  (mismatched lengths, no way to pair a dot with its title) with a single
  entries list of (color, title) pairs so the dot and its title render on
  the same non-wrapping row per entry

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

app/static/css/style.css

@@ -872,15 +872,48 @@ label {
 }
 
 /* 저널링 */
-.journal-day-dots {
+.calendar-cell-journal {
+  aspect-ratio: auto;
+  min-height: 76px;
+  padding: 6px 5px;
+  overflow: hidden;
+}
+
+.calendar-cell-journal .calendar-date {
+  font-size: 13px;
+}
+
+.journal-day-entries {
   display: flex;
-  gap: 2px;
+  flex-direction: column;
+  align-items: flex-start;
+  width: 100%;
+}
+
+.journal-day-entry {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  width: 100%;
+  min-width: 0;
 }
 
 .journal-day-dot {
-  width: 5px;
-  height: 5px;
+  width: 6px;
+  height: 6px;
   border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.journal-day-title {
+  min-width: 0;
+  font-size: 10px;
+  line-height: 1.3;
+  color: var(--color-text-muted);
+  text-align: left;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
 }
 
 .journal-prompt-card,