feat(journal): add per-user mood journal module (task 86)

Ship journal entries with mood tracking, insights, and Recharts charts.

Adds v1 API endpoints per ADR 0005 and migration 0020_journal_entries.

docs/api/openapi.yaml

@@ -152,6 +152,32 @@ components:
         pinned: { type: boolean, default: false }
         remindAt: { type: string, format: date-time, nullable: true }
 
+    JournalEntry:
+      type: object
+      properties:
+        id: { type: string, format: uuid }
+        householdId: { type: string, format: uuid }
+        userId: { type: string, format: uuid }
+        recordedAt: { type: string, format: date-time }
+        title: { type: string, nullable: true }
+        body: { type: string }
+        moods: { type: array, items: { type: string } }
+        stress: { type: integer, minimum: 1, maximum: 10, nullable: true }
+        pillsTaken: { type: boolean, nullable: true }
+        createdAt: { type: string, format: date-time }
+        updatedAt: { type: string, format: date-time }
+
+    JournalEntryInput:
+      type: object
+      required: [recordedAt]
+      properties:
+        recordedAt: { type: string, format: date-time }
+        title: { type: string, nullable: true }
+        body: { type: string, default: "" }
+        moods: { type: array, items: { type: string }, default: [] }
+        stress: { type: integer, minimum: 1, maximum: 10, nullable: true }
+        pillsTaken: { type: boolean, nullable: true }
+
     GardenContainer:
       type: object
       properties:
@@ -820,10 +846,74 @@ paths:
             application/json:
               schema: { $ref: "#/components/schemas/OkResponse" }
 
+  /api/v1/journal/entries:
+    get:
+      summary: List journal entries for the authenticated user
+      tags: [Journal]
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                type: array
+                items: { $ref: "#/components/schemas/JournalEntry" }
+    post:
+      summary: Create journal entry
+      tags: [Journal]
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/JournalEntryInput" }
+      responses:
+        "201":
+          content:
+            application/json:
+              schema: { $ref: "#/components/schemas/JournalEntry" }
+
+  /api/v1/journal/entries/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema: { type: string, format: uuid }
+    get:
+      summary: Get journal entry
+      tags: [Journal]
+      responses:
+        "200":
+          content:
+            application/json:
+              schema: { $ref: "#/components/schemas/JournalEntry" }
+    patch:
+      summary: Update journal entry
+      tags: [Journal]
+      requestBody:
+        content:
+          application/json:
+            schema:
+              allOf:
+                - $ref: "#/components/schemas/JournalEntryInput"
+              description: All fields optional
+      responses:
+        "200":
+          content:
+            application/json:
+              schema: { $ref: "#/components/schemas/JournalEntry" }
+    delete:
+      summary: Delete journal entry
+      tags: [Journal]
+      responses:
+        "200":
+          content:
+            application/json:
+              schema: { $ref: "#/components/schemas/OkResponse" }
+
 tags:
   - name: Calendars
   - name: Events
   - name: Lists
   - name: Notes
+  - name: Journal
   - name: Garden
   - name: Bangs