Add update (CRUD) for events and people; record the full-CRUD invariant

Events and people are now editable, not write-once: PATCH /events/{id} (type, structured date, place, notes) and PATCH /persons/{id} (vitals, privacy, and the primary name's given/surname). CLAUDE.md gains rule #8: every stored object must support full CRUD in API and UI — historical research is constant correction. Tests cover both updates.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Justin Paul <justin@jpaul.me>

backend/app/schemas/event.py

@@ -20,6 +20,19 @@ class EventCreate(BaseModel):
     notes: str | None = None
 
 
+class EventUpdate(BaseModel):
+    # All optional; only fields explicitly sent are changed (PATCH semantics).
+    event_type: str | None = None
+    place_id: uuid.UUID | None = None
+    date_value: str | None = None
+    date_start: date | None = None
+    date_end: date | None = None
+    date_precision: str | None = None
+    calendar: str | None = None
+    detail: str | None = None
+    notes: str | None = None
+
+
 class EventRead(BaseModel):
     model_config = ConfigDict(from_attributes=True)
 

backend/app/schemas/person.py

@@ -15,6 +15,16 @@ class PersonCreate(BaseModel):
     notes: str | None = None
 
 
+class PersonUpdate(BaseModel):
+    # Person fields + the primary name's parts; only sent fields are changed.
+    given: str | None = None
+    surname: str | None = None
+    gender: str | None = None
+    is_living: bool | None = None
+    privacy: PersonPrivacy | None = None
+    notes: str | None = None
+
+
 class PersonRead(BaseModel):
     model_config = ConfigDict(from_attributes=True)