V5.1 Modify Person table: split full name into first & last, added tags support

docs/schema.md

@@ -22,9 +22,11 @@ erDiagram
     Document ||--o{ DocumentPerson : links
     Document ||--o{ DocumentTag : tagged
     Person ||--o{ DocumentPerson : links
+    Person ||--o{ PersonTag : tagged
     Person ||--o{ Photo : owns
     PersonRole ||--o{ DocumentPerson : labels
     Tag ||--o{ DocumentTag : labels
+    Tag ||--o{ PersonTag : labels
     Job ||--o{ JobSource : includes
     Source ||--o{ JobSource : participates
     JobSource ||--o{ ExecutionAttempt : attempts
@@ -110,9 +112,8 @@ erDiagram
 | Field | Type | Notes |
 | :--- | :--- | :--- |
 | `id` | `UUID` | PK |
-| `full_name` | `str` | required |
-| `display_name` | `str \| None` | optional |
-| `maiden_name` | `str \| None` | optional |
+| `last_name` | `str` | required |
+| `given_names` | `str` | required |
 | `birth_date` | `date \| None` | optional |
 | `birth_date_raw` | `str \| None` | optional |
 | `birth_place` | `str \| None` | optional |
@@ -164,6 +165,19 @@ Constraint:
 Constraint:
 - `UniqueConstraint(document_id, tag_id)` named `uq_document_tag`
 
+### `PersonTag`
+
+| Field | Type | Notes |
+| :--- | :--- | :--- |
+| `id` | `UUID` | PK |
+| `person_id` | `UUID` | FK -> `person.id`, indexed |
+| `tag_id` | `UUID` | FK -> `tag.id`, indexed |
+| `created_at` | `datetime` | default now |
+| `updated_at` | `datetime` | default now, onupdate |
+
+Constraint:
+- `UniqueConstraint(person_id, tag_id)` named `uq_person_tag`
+
 ### `Job`
 
 | Field | Type | Notes |