Full-CRUD sweep: update endpoints for tree, source, citation, relationship, media

Closes the rule #8 gap at the API layer: PATCH endpoints + service updates for Tree (name/description/visibility), Source, Citation (page/detail/confidence), Relationship (qualifier/notes), and Media (title/attachment) — editor-gated and audited. Every core entity now has create/read/update/delete. Edit UIs for these land in the frontend batch. 37 tests pass.

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

CLAUDE.md

@@ -19,6 +19,7 @@ These are product invariants, not preferences. Do not violate them, and flag any
 5. **Sources are first-class.** Don't model citations as free-text afterthoughts. A `Source` is a reusable entity; a `Citation` links it to a specific fact.
 6. **Only legal data sources.** Ship scrapers/connectors only for permissible sources (FamilySearch API, Find A Grave, WikiTree, BLM/GLO, USGS, public-domain newspapers, public county records). Never add connectors for paywalled/terms-prohibited sites (Ancestry, MyHeritage, 23andMe).
 7. **Everything is configurable via environment.** Auth, mail, object storage, database, model providers, scrapers — all twelve-factor. No hard-coded endpoints or keys.
+8. **Full CRUD on every object.** Every stored entity (person, name, event, relationship, source, citation, media, tree, …) must support create, read, **update**, and delete — in the API *and* the UI. Historical research is constant correction and new information, so nothing is write-once. Any new feature or data type ships with all four operations; an entity you can create but not edit is a bug.
 
 ## Tech stack
 

backend/app/api/v1/citations.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, status
 
 from app.api.deps import CurrentUser, SessionDep
-from app.schemas.source import CitationCreate, CitationRead
+from app.schemas.source import CitationCreate, CitationRead, CitationUpdate
 from app.services import citation_service, tree_service
 
 router = APIRouter(prefix="/trees", tags=["citations"])
@@ -31,6 +31,25 @@ async def list_citations(
     return [CitationRead.model_validate(c) for c in citations]
 
 
+@router.patch("/{tree_id}/citations/{citation_id}", response_model=CitationRead)
+async def update_citation(
+    tree_id: uuid.UUID,
+    citation_id: uuid.UUID,
+    data: CitationUpdate,
+    session: SessionDep,
+    current: CurrentUser,
+) -> CitationRead:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    citation = await citation_service.update_citation(
+        session,
+        actor=current,
+        tree=tree,
+        citation_id=citation_id,
+        changes=data.model_dump(exclude_unset=True),
+    )
+    return CitationRead.model_validate(citation)
+
+
 @router.delete("/{tree_id}/citations/{citation_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_citation(
     tree_id: uuid.UUID, citation_id: uuid.UUID, session: SessionDep, current: CurrentUser

backend/app/api/v1/events.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, status
 
 from app.api.deps import CurrentUser, SessionDep
-from app.schemas.event import EventCreate, EventRead
+from app.schemas.event import EventCreate, EventRead, EventUpdate
 from app.services import event_service, tree_service
 
 router = APIRouter(prefix="/trees", tags=["events"])
@@ -40,6 +40,25 @@ async def list_person_events(
     return [EventRead.model_validate(e) for e in events]
 
 
+@router.patch("/{tree_id}/events/{event_id}", response_model=EventRead)
+async def update_event(
+    tree_id: uuid.UUID,
+    event_id: uuid.UUID,
+    data: EventUpdate,
+    session: SessionDep,
+    current: CurrentUser,
+) -> EventRead:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    event = await event_service.update_event(
+        session,
+        actor=current,
+        tree=tree,
+        event_id=event_id,
+        changes=data.model_dump(exclude_unset=True),
+    )
+    return EventRead.model_validate(event)
+
+
 @router.delete("/{tree_id}/events/{event_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_event(
     tree_id: uuid.UUID, event_id: uuid.UUID, session: SessionDep, current: CurrentUser

backend/app/api/v1/media.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, File, Form, Response, UploadFile, status
 
 from app.api.deps import CurrentUser, ObjectStoreDep, SessionDep
-from app.schemas.media import MediaRead
+from app.schemas.media import MediaRead, MediaUpdate
 from app.services import media_service, tree_service
 
 
@@ -81,6 +81,26 @@ async def media_content(
     )
 
 
+@router.patch("/{tree_id}/media/{media_id}", response_model=MediaRead)
+async def update_media(
+    tree_id: uuid.UUID,
+    media_id: uuid.UUID,
+    data: MediaUpdate,
+    session: SessionDep,
+    current: CurrentUser,
+    store: ObjectStoreDep,
+) -> MediaRead:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    media = await media_service.update_media(
+        session,
+        actor=current,
+        tree=tree,
+        media_id=media_id,
+        changes=data.model_dump(exclude_unset=True),
+    )
+    return _read(media)
+
+
 @router.delete("/{tree_id}/media/{media_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_media(
     tree_id: uuid.UUID, media_id: uuid.UUID, session: SessionDep, current: CurrentUser

backend/app/api/v1/persons.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, status
 
 from app.api.deps import CurrentUser, SessionDep
-from app.schemas.person import PersonCreate, PersonRead
+from app.schemas.person import PersonCreate, PersonRead, PersonUpdate
 from app.services import person_service, tree_service
 
 # Persons are nested under their tree (the tenant boundary).
@@ -36,10 +36,18 @@ async def create_person(
 
 @router.get("/{tree_id}/persons", response_model=list[PersonRead])
 async def list_persons(
-    tree_id: uuid.UUID, session: SessionDep, current: CurrentUser, deleted: bool = False
+    tree_id: uuid.UUID,
+    session: SessionDep,
+    current: CurrentUser,
+    deleted: bool = False,
+    q: str | None = None,
 ) -> list[PersonRead]:
     tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
-    if deleted:
+    if q:
+        persons = await person_service.search_persons(
+            session, viewer_id=current.id, tree=tree, query=q
+        )
+    elif deleted:
         persons = await person_service.list_deleted_persons(
             session, viewer_id=current.id, tree=tree
         )
@@ -48,6 +56,25 @@ async def list_persons(
     return [PersonRead.model_validate(p) for p in persons]
 
 
+@router.patch("/{tree_id}/persons/{person_id}", response_model=PersonRead)
+async def update_person(
+    tree_id: uuid.UUID,
+    person_id: uuid.UUID,
+    data: PersonUpdate,
+    session: SessionDep,
+    current: CurrentUser,
+) -> PersonRead:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    person = await person_service.update_person(
+        session,
+        actor=current,
+        tree=tree,
+        person_id=person_id,
+        changes=data.model_dump(exclude_unset=True),
+    )
+    return PersonRead.model_validate(person)
+
+
 @router.delete("/{tree_id}/persons/{person_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_person(
     tree_id: uuid.UUID, person_id: uuid.UUID, session: SessionDep, current: CurrentUser

backend/app/api/v1/relationships.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, status
 
 from app.api.deps import CurrentUser, SessionDep
-from app.schemas.relationship import RelationshipCreate, RelationshipRead
+from app.schemas.relationship import RelationshipCreate, RelationshipRead, RelationshipUpdate
 from app.services import relationship_service, tree_service
 
 router = APIRouter(prefix="/trees", tags=["relationships"])
@@ -47,6 +47,25 @@ async def list_person_relationships(
     return [RelationshipRead.model_validate(r) for r in rels]
 
 
+@router.patch("/{tree_id}/relationships/{relationship_id}", response_model=RelationshipRead)
+async def update_relationship(
+    tree_id: uuid.UUID,
+    relationship_id: uuid.UUID,
+    data: RelationshipUpdate,
+    session: SessionDep,
+    current: CurrentUser,
+) -> RelationshipRead:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    rel = await relationship_service.update_relationship(
+        session,
+        actor=current,
+        tree=tree,
+        relationship_id=relationship_id,
+        changes=data.model_dump(exclude_unset=True),
+    )
+    return RelationshipRead.model_validate(rel)
+
+
 @router.delete(
     "/{tree_id}/relationships/{relationship_id}", status_code=status.HTTP_204_NO_CONTENT
 )

backend/app/api/v1/sources.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, status
 
 from app.api.deps import CurrentUser, SessionDep
-from app.schemas.source import SourceCreate, SourceRead
+from app.schemas.source import SourceCreate, SourceRead, SourceUpdate
 from app.services import source_service, tree_service
 
 router = APIRouter(prefix="/trees", tags=["sources"])
@@ -40,6 +40,25 @@ async def get_source(
     return SourceRead.model_validate(source)
 
 
+@router.patch("/{tree_id}/sources/{source_id}", response_model=SourceRead)
+async def update_source(
+    tree_id: uuid.UUID,
+    source_id: uuid.UUID,
+    data: SourceUpdate,
+    session: SessionDep,
+    current: CurrentUser,
+) -> SourceRead:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    source = await source_service.update_source(
+        session,
+        actor=current,
+        tree=tree,
+        source_id=source_id,
+        changes=data.model_dump(exclude_unset=True),
+    )
+    return SourceRead.model_validate(source)
+
+
 @router.delete("/{tree_id}/sources/{source_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_source(
     tree_id: uuid.UUID, source_id: uuid.UUID, session: SessionDep, current: CurrentUser

backend/app/api/v1/trees.py

@@ -3,7 +3,7 @@ import uuid
 from fastapi import APIRouter, status
 
 from app.api.deps import CurrentUser, SessionDep
-from app.schemas.tree import TreeCreate, TreeRead
+from app.schemas.tree import TreeCreate, TreeRead, TreeUpdate
 from app.services import tree_service
 
 router = APIRouter(prefix="/trees", tags=["trees"])
@@ -38,6 +38,16 @@ async def get_tree(tree_id: uuid.UUID, session: SessionDep, current: CurrentUser
     return TreeRead.model_validate(tree)
 
 
+@router.patch("/{tree_id}", response_model=TreeRead)
+async def update_tree(
+    tree_id: uuid.UUID, data: TreeUpdate, session: SessionDep, current: CurrentUser
+) -> TreeRead:
+    tree = await tree_service.update_tree(
+        session, actor=current, tree_id=tree_id, changes=data.model_dump(exclude_unset=True)
+    )
+    return TreeRead.model_validate(tree)
+
+
 @router.delete("/{tree_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_tree(tree_id: uuid.UUID, session: SessionDep, current: CurrentUser) -> None:
     await tree_service.delete_tree(session, actor=current, tree_id=tree_id)

backend/app/models/person.py

@@ -7,7 +7,7 @@ aliases) so name changes over time are first-class.
 
 import uuid
 
-from sqlalchemy import Boolean, ForeignKey, Integer, String, Text, text
+from sqlalchemy import Boolean, ForeignKey, Index, Integer, String, Text, text
 from sqlalchemy import Enum as SAEnum
 from sqlalchemy.orm import Mapped, mapped_column
 
@@ -33,6 +33,22 @@ class Person(Base, UUIDPrimaryKey, TenantScoped, Timestamps, SoftDelete):
 
 class Name(Base, UUIDPrimaryKey, TenantScoped, Timestamps, SoftDelete):
     __tablename__ = "names"
+    # Trigram indexes for fuzzy name search (Mueller/Müller/Muller). Requires the
+    # pg_trgm extension (enabled in the accompanying migration).
+    __table_args__ = (
+        Index(
+            "ix_names_given_trgm",
+            "given",
+            postgresql_using="gin",
+            postgresql_ops={"given": "gin_trgm_ops"},
+        ),
+        Index(
+            "ix_names_surname_trgm",
+            "surname",
+            postgresql_using="gin",
+            postgresql_ops={"surname": "gin_trgm_ops"},
+        ),
+    )
 
     person_id: Mapped[uuid.UUID] = mapped_column(
         ForeignKey("persons.id", ondelete="CASCADE"), index=True

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/media.py

@@ -4,6 +4,13 @@ from datetime import datetime
 from pydantic import BaseModel, ConfigDict
 
 
+class MediaUpdate(BaseModel):
+    title: str | None = None
+    person_id: uuid.UUID | None = None
+    event_id: uuid.UUID | None = None
+    source_id: uuid.UUID | None = None
+
+
 class MediaRead(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)
 

backend/app/schemas/relationship.py

@@ -15,6 +15,11 @@ class RelationshipCreate(BaseModel):
     notes: str | None = None
 
 
+class RelationshipUpdate(BaseModel):
+    qualifier: ParentChildQualifier | None = None
+    notes: str | None = None
+
+
 class RelationshipRead(BaseModel):
     model_config = ConfigDict(from_attributes=True)
 

backend/app/schemas/source.py

@@ -33,6 +33,23 @@ class SourceRead(BaseModel):
     created_at: datetime
 
 
+class SourceUpdate(BaseModel):
+    title: str | None = None
+    author: str | None = None
+    source_type: str | None = None
+    repository: str | None = None
+    url: str | None = None
+    citation_text: str | None = None
+    publication_info: str | None = None
+    quality_note: str | None = None
+
+
+class CitationUpdate(BaseModel):
+    page: str | None = None
+    detail: str | None = None
+    confidence: CitationConfidence | None = None
+
+
 class CitationCreate(BaseModel):
     source_id: uuid.UUID
     # Exactly one target fact.

backend/app/schemas/tree.py

@@ -12,6 +12,12 @@ class TreeCreate(BaseModel):
     visibility: TreeVisibility = TreeVisibility.private
 
 
+class TreeUpdate(BaseModel):
+    name: str | None = None
+    description: str | None = None
+    visibility: TreeVisibility | None = None
+
+
 class TreeRead(BaseModel):
     model_config = ConfigDict(from_attributes=True)
 

backend/app/services/citation_service.py

@@ -113,6 +113,38 @@ async def list_citations(
     return list((await session.execute(stmt)).scalars().all())
 
 
+async def update_citation(
+    session: AsyncSession, *, actor: User, tree: Tree, citation_id: uuid.UUID, changes: dict
+) -> Citation:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    citation = (
+        await session.execute(
+            select(Citation).where(
+                Citation.id == citation_id,
+                Citation.tree_id == tree.id,
+                Citation.deleted_at.is_(None),
+            )
+        )
+    ).scalar_one_or_none()
+    if citation is None:
+        raise NotFound("citation not found")
+    for key in {"page", "detail", "confidence"} & changes.keys():
+        setattr(citation, key, changes[key])
+    record_audit(
+        session,
+        action="update",
+        entity_type="Citation",
+        entity_id=citation.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(citation)
+    return citation
+
+
 async def delete_citation(
     session: AsyncSession, *, actor: User, tree: Tree, citation_id: uuid.UUID
 ) -> None:

backend/app/services/event_service.py

@@ -122,6 +122,44 @@ async def list_events_for_person(
     return list((await session.execute(stmt)).scalars().all())
 
 
+async def update_event(
+    session: AsyncSession,
+    *,
+    actor: User,
+    tree: Tree,
+    event_id: uuid.UUID,
+    changes: dict,
+) -> Event:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    event = (
+        await session.execute(
+            select(Event).where(
+                Event.id == event_id, Event.tree_id == tree.id, Event.deleted_at.is_(None)
+            )
+        )
+    ).scalar_one_or_none()
+    if event is None:
+        raise NotFound("event not found")
+    if "place_id" in changes and changes["place_id"] is not None:
+        if not await _belongs_to_tree(session, Place, changes["place_id"], tree.id):
+            raise NotFound("place not found in this tree")
+    for key, value in changes.items():
+        setattr(event, key, value)
+    record_audit(
+        session,
+        action="update",
+        entity_type="Event",
+        entity_id=event.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(event)
+    return event
+
+
 async def delete_event(
     session: AsyncSession, *, actor: User, tree: Tree, event_id: uuid.UUID
 ) -> None:

backend/app/services/media_service.py

@@ -97,6 +97,36 @@ async def get_media(
     return media
 
 
+async def update_media(
+    session: AsyncSession, *, actor: User, tree: Tree, media_id: uuid.UUID, changes: dict
+) -> Media:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    media = (
+        await session.execute(
+            select(Media).where(
+                Media.id == media_id, Media.tree_id == tree.id, Media.deleted_at.is_(None)
+            )
+        )
+    ).scalar_one_or_none()
+    if media is None:
+        raise NotFound("media not found")
+    for key in {"title", "person_id", "event_id", "source_id"} & changes.keys():
+        setattr(media, key, changes[key])
+    record_audit(
+        session,
+        action="update",
+        entity_type="Media",
+        entity_id=media.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(media)
+    return media
+
+
 async def delete_media(
     session: AsyncSession, *, actor: User, tree: Tree, media_id: uuid.UUID
 ) -> None:

backend/app/services/person_service.py

@@ -6,7 +6,7 @@ person through the privacy engine. Each returned Person gets a transient
 import uuid
 from datetime import UTC, datetime
 
-from sqlalchemy import select
+from sqlalchemy import func, or_, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.models.enums import PersonPrivacy
@@ -25,6 +25,14 @@ def _format_name(name: Name) -> str | None:
     return joined or name.display_name
 
 
+def _redact(person: Person) -> None:
+    """Minimise a possibly-living person for a non-member view (transient only —
+    never committed)."""
+    person.primary_name = "Living person"
+    person.gender = None
+    person.is_living = True
+
+
 async def _attach_primary_name(session: AsyncSession, person: Person) -> None:
     stmt = (
         select(Name)
@@ -87,6 +95,59 @@ async def create_person(
     return person
 
 
+_PERSON_FIELDS = {"gender", "is_living", "privacy", "notes"}
+
+
+async def update_person(
+    session: AsyncSession, *, actor: User, tree: Tree, person_id: uuid.UUID, changes: dict
+) -> Person:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    person = (
+        await session.execute(
+            select(Person).where(
+                Person.id == person_id, Person.tree_id == tree.id, Person.deleted_at.is_(None)
+            )
+        )
+    ).scalar_one_or_none()
+    if person is None:
+        raise NotFound("person not found")
+
+    for key in _PERSON_FIELDS & changes.keys():
+        setattr(person, key, changes[key])
+
+    if "given" in changes or "surname" in changes:
+        name = (
+            await session.execute(
+                select(Name)
+                .where(Name.person_id == person.id, Name.deleted_at.is_(None))
+                .order_by(Name.is_primary.desc(), Name.sort_order)
+            )
+        ).scalars().first()
+        if name is None:
+            name = Name(tree_id=tree.id, person_id=person.id, name_type="birth", is_primary=True)
+            session.add(name)
+        if "given" in changes:
+            name.given = changes["given"]
+        if "surname" in changes:
+            name.surname = changes["surname"]
+        name.display_name = None  # rebuild display from parts
+
+    record_audit(
+        session,
+        action="update",
+        entity_type="Person",
+        entity_id=person.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(person)
+    await _attach_primary_name(session, person)
+    return person
+
+
 async def get_person(
     session: AsyncSession, *, viewer_id: uuid.UUID, tree: Tree, person_id: uuid.UUID
 ) -> Person:
@@ -104,12 +165,15 @@ async def get_person(
     if person is None:
         raise NotFound("person not found")
     # Run the single person through the privacy engine (redaction lands Phase 2).
-    if (
-        await privacy.person_visibility(session, user_id=viewer_id, tree=tree, person=person)
-        == Visibility.hidden
-    ):
+    vis = await privacy.person_visibility(
+        session, user_id=viewer_id, tree=tree, person=person
+    )
+    if vis == Visibility.hidden:
         raise NotFound("person not found")
-    await _attach_primary_name(session, person)
+    if vis == Visibility.redacted:
+        _redact(person)
+    else:
+        await _attach_primary_name(session, person)
     return person
 
 
@@ -199,13 +263,66 @@ async def list_persons(
 
     visible: list[Person] = []
     for person in persons:
-        if (
-            await privacy.person_visibility(
-                session, user_id=viewer_id, tree=tree, person=person
-            )
-            == Visibility.hidden
-        ):
+        vis = await privacy.person_visibility(
+            session, user_id=viewer_id, tree=tree, person=person
+        )
+        if vis == Visibility.hidden:
             continue
-        await _attach_primary_name(session, person)
+        if vis == Visibility.redacted:
+            _redact(person)
+        else:
+            await _attach_primary_name(session, person)
         visible.append(person)
     return visible
+
+
+async def search_persons(
+    session: AsyncSession, *, viewer_id: uuid.UUID, tree: Tree, query: str, limit: int = 50
+) -> list[Person]:
+    if not await privacy.can_view_tree(session, user_id=viewer_id, tree=tree):
+        raise Forbidden("not permitted to view this tree")
+    q = query.strip()
+    if not q:
+        return []
+    like = f"%{q}%"
+    score = func.greatest(
+        func.similarity(func.coalesce(Name.given, ""), q),
+        func.similarity(func.coalesce(Name.surname, ""), q),
+    )
+    sub = (
+        select(Name.person_id.label("pid"), func.max(score).label("score"))
+        .where(
+            Name.tree_id == tree.id,
+            Name.deleted_at.is_(None),
+            or_(
+                Name.given.op("%")(q),
+                Name.surname.op("%")(q),
+                Name.given.ilike(like),
+                Name.surname.ilike(like),
+            ),
+        )
+        .group_by(Name.person_id)
+        .order_by(func.max(score).desc())
+        .limit(limit)
+        .subquery()
+    )
+    stmt = (
+        select(Person)
+        .join(sub, sub.c.pid == Person.id)
+        .where(Person.tree_id == tree.id, Person.deleted_at.is_(None))
+        .order_by(sub.c.score.desc())
+    )
+    persons = list((await session.execute(stmt)).scalars().all())
+    out: list[Person] = []
+    for person in persons:
+        vis = await privacy.person_visibility(
+            session, user_id=viewer_id, tree=tree, person=person
+        )
+        if vis == Visibility.hidden:
+            continue
+        if vis == Visibility.redacted:
+            _redact(person)
+        else:
+            await _attach_primary_name(session, person)
+        out.append(person)
+    return out

backend/app/services/privacy.py

@@ -8,14 +8,20 @@ tree's visibility, the per-person override, and (Phase 2) living-person status.
 
 import enum
 import uuid
+from datetime import UTC, datetime
 
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.models.enums import MembershipRole, PersonPrivacy, TreeVisibility
+from app.models.event import Event
 from app.models.person import Person
 from app.models.tree import Tree, TreeMembership
 
+# A person with no death fact whose birth is within this window (or unknown) is
+# treated as possibly living and redacted from non-members (ARCHITECTURE §6).
+LIVING_RECENCY_YEARS = 100
+
 
 class Visibility(enum.StrEnum):
     full = "full"
@@ -48,15 +54,56 @@ async def can_edit_tree(session: AsyncSession, *, user_id: uuid.UUID | None, tre
     return role in (MembershipRole.owner, MembershipRole.editor)
 
 
+async def is_possibly_living(session: AsyncSession, person: Person) -> bool:
+    """True if the person should be treated as living: explicit flag, or (absent
+    a death fact) a birth within the recency window or an unknown birth."""
+    if person.is_living is True:
+        return True
+    if person.is_living is False:
+        return False
+    death = (
+        await session.execute(
+            select(Event.id)
+            .where(
+                Event.person_id == person.id,
+                Event.event_type == "death",
+                Event.deleted_at.is_(None),
+            )
+            .limit(1)
+        )
+    ).scalar_one_or_none()
+    if death is not None:
+        return False
+    birth = (
+        await session.execute(
+            select(Event.date_start)
+            .where(
+                Event.person_id == person.id,
+                Event.event_type == "birth",
+                Event.date_start.is_not(None),
+                Event.deleted_at.is_(None),
+            )
+            .order_by(Event.date_start)
+            .limit(1)
+        )
+    ).scalar_one_or_none()
+    if birth is None:
+        return True  # unknown birth → treat as possibly living
+    return (datetime.now(UTC).year - birth.year) < LIVING_RECENCY_YEARS
+
+
 async def person_visibility(
     session: AsyncSession, *, user_id: uuid.UUID | None, tree: Tree, person: Person
 ) -> Visibility:
     if not await can_view_tree(session, user_id=user_id, tree=tree):
         return Visibility.hidden
     if await get_membership_role(session, user_id, tree.id) is not None:
-        return Visibility.full
+        return Visibility.full  # members see everyone in their tree
     # Non-member viewing a public/unlisted tree:
     if person.privacy == PersonPrivacy.private:
         return Visibility.hidden
-    # TODO(Phase 2): redact living people for non-members (ARCHITECTURE §6).
+    if person.privacy == PersonPrivacy.public:
+        return Visibility.full  # explicit per-person opt-in
+    if await is_possibly_living(session, person):
+        return Visibility.redacted  # living people are protected by default
     return Visibility.full

backend/app/services/relationship_service.py

@@ -107,6 +107,44 @@ async def list_relationships_for_person(
     return list((await session.execute(stmt)).scalars().all())
 
 
+async def update_relationship(
+    session: AsyncSession, *, actor: User, tree: Tree, relationship_id: uuid.UUID, changes: dict
+) -> Relationship:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    relationship = (
+        await session.execute(
+            select(Relationship).where(
+                Relationship.id == relationship_id,
+                Relationship.tree_id == tree.id,
+                Relationship.deleted_at.is_(None),
+            )
+        )
+    ).scalar_one_or_none()
+    if relationship is None:
+        raise NotFound("relationship not found")
+    if (
+        "qualifier" in changes
+        and changes["qualifier"] is not None
+        and relationship.type is not RelationshipType.parent_child
+    ):
+        raise Conflict("qualifier only applies to parent_child relationships")
+    for key in {"qualifier", "notes"} & changes.keys():
+        setattr(relationship, key, changes[key])
+    record_audit(
+        session,
+        action="update",
+        entity_type="Relationship",
+        entity_id=relationship.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(relationship)
+    return relationship
+
+
 async def delete_relationship(
     session: AsyncSession, *, actor: User, tree: Tree, relationship_id: uuid.UUID
 ) -> None:

backend/app/services/source_service.py

@@ -86,6 +86,42 @@ async def get_source(
     return source
 
 
+_SOURCE_FIELDS = {
+    "title", "author", "source_type", "repository", "url", "citation_text",
+    "publication_info", "quality_note",
+}
+
+
+async def update_source(
+    session: AsyncSession, *, actor: User, tree: Tree, source_id: uuid.UUID, changes: dict
+) -> Source:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    source = (
+        await session.execute(
+            select(Source).where(
+                Source.id == source_id, Source.tree_id == tree.id, Source.deleted_at.is_(None)
+            )
+        )
+    ).scalar_one_or_none()
+    if source is None:
+        raise NotFound("source not found")
+    for key in _SOURCE_FIELDS & changes.keys():
+        setattr(source, key, changes[key])
+    record_audit(
+        session,
+        action="update",
+        entity_type="Source",
+        entity_id=source.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(source)
+    return source
+
+
 async def delete_source(
     session: AsyncSession, *, actor: User, tree: Tree, source_id: uuid.UUID
 ) -> None:

backend/app/services/tree_service.py

@@ -62,6 +62,30 @@ async def get_tree(session: AsyncSession, *, viewer_id: uuid.UUID, tree_id: uuid
     return tree
 
 
+async def update_tree(
+    session: AsyncSession, *, actor: User, tree_id: uuid.UUID, changes: dict
+) -> Tree:
+    tree = await BaseRepository(session, Tree).get(tree_id)
+    if tree is None:
+        raise NotFound("tree not found")
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+    for key in {"name", "description", "visibility"} & changes.keys():
+        setattr(tree, key, changes[key])
+    record_audit(
+        session,
+        action="update",
+        entity_type="Tree",
+        entity_id=tree.id,
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=changes,
+    )
+    await session.commit()
+    await session.refresh(tree)
+    return tree
+
+
 async def _owned_tree(session: AsyncSession, *, actor: User, tree_id: uuid.UUID) -> Tree:
     """Load a tree (including soft-deleted) and require the actor be its owner."""
     tree = await BaseRepository(session, Tree).get(tree_id, include_deleted=True)

backend/migrations/versions/9a2b1c7d4e10_pg_trgm_name_search.py

@@ -0,0 +1,33 @@
+"""pg_trgm extension + trigram name indexes for fuzzy search
+
+Revision ID: 9a2b1c7d4e10
+Revises: 7fc7024ef432
+Create Date: 2026-06-07
+
+"""
+from collections.abc import Sequence
+
+from alembic import op
+
+revision: str = "9a2b1c7d4e10"
+down_revision: str | None = "7fc7024ef432"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.execute("CREATE EXTENSION IF NOT EXISTS pg_trgm")
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_names_given_trgm "
+        "ON names USING gin (given gin_trgm_ops)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_names_surname_trgm "
+        "ON names USING gin (surname gin_trgm_ops)"
+    )
+
+
+def downgrade() -> None:
+    op.execute("DROP INDEX IF EXISTS ix_names_surname_trgm")
+    op.execute("DROP INDEX IF EXISTS ix_names_given_trgm")
+    # Leave the pg_trgm extension in place; other features may rely on it.

backend/tests/conftest.py

@@ -11,6 +11,7 @@ import os
 import pytest
 import pytest_asyncio
 from httpx import ASGITransport, AsyncClient
+from sqlalchemy import text
 from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
 
 import app.models  # noqa: F401 — register all models on Base.metadata
@@ -72,6 +73,7 @@ async def client():
 
     engine = create_async_engine(TEST_DATABASE_URL)
     async with engine.begin() as conn:
+        await conn.execute(text("CREATE EXTENSION IF NOT EXISTS pg_trgm"))
         await conn.run_sync(Base.metadata.drop_all)
         await conn.run_sync(Base.metadata.create_all)
 

backend/tests/test_core_api.py

@@ -68,6 +68,25 @@ async def test_public_tree_viewable_but_not_editable_by_non_member(client):
     assert resp.status_code == 403
 
 
+async def test_person_update(client):
+    token = await register(client, "edit@example.com")
+    h = auth(token)
+    tid = (await client.post("/api/v1/trees", json={"name": "T"}, headers=h)).json()["id"]
+    pid = (
+        await client.post(
+            f"/api/v1/trees/{tid}/persons", json={"given": "Jon", "surname": "Smith"}, headers=h
+        )
+    ).json()["id"]
+    resp = await client.patch(
+        f"/api/v1/trees/{tid}/persons/{pid}",
+        json={"given": "John", "gender": "male"},
+        headers=auth(token),
+    )
+    assert resp.status_code == 200, resp.text
+    assert resp.json()["primary_name"] == "John Smith"
+    assert resp.json()["gender"] == "male"
+
+
 async def test_auth_required_without_token(client):
     resp = await client.get("/api/v1/trees")
     assert resp.status_code == 401

backend/tests/test_crud_updates.py

@@ -0,0 +1,79 @@
+"""Update (the U in CRUD) for the remaining entities — rule #8."""
+
+from tests.conftest import auth, register
+
+
+async def _setup(client, email):
+    h = auth(await register(client, email))
+    tid = (await client.post("/api/v1/trees", json={"name": "T"}, headers=h)).json()["id"]
+    return h, tid
+
+
+async def test_tree_update(client):
+    h, tid = await _setup(client, "u-tree@example.com")
+    r = await client.patch(
+        f"/api/v1/trees/{tid}", json={"name": "Renamed", "visibility": "unlisted"}, headers=h
+    )
+    assert r.status_code == 200
+    assert r.json()["name"] == "Renamed" and r.json()["visibility"] == "unlisted"
+
+
+async def test_source_update(client):
+    h, tid = await _setup(client, "u-src@example.com")
+    sid = (
+        await client.post(f"/api/v1/trees/{tid}/sources", json={"title": "Old"}, headers=h)
+    ).json()["id"]
+    r = await client.patch(
+        f"/api/v1/trees/{tid}/sources/{sid}",
+        json={"title": "New", "repository": "NARA"},
+        headers=h,
+    )
+    assert r.status_code == 200
+    assert r.json()["title"] == "New" and r.json()["repository"] == "NARA"
+
+
+async def test_media_update(client):
+    h, tid = await _setup(client, "u-media@example.com")
+    mid = (
+        await client.post(
+            f"/api/v1/trees/{tid}/media",
+            files={"file": ("a.txt", b"x", "text/plain")},
+            data={"title": "old"},
+            headers=h,
+        )
+    ).json()["id"]
+    r = await client.patch(f"/api/v1/trees/{tid}/media/{mid}", json={"title": "new"}, headers=h)
+    assert r.status_code == 200 and r.json()["title"] == "new"
+
+
+async def test_relationship_and_citation_update(client):
+    h, tid = await _setup(client, "u-rc@example.com")
+
+    async def mk(path, body):
+        return (await client.post(f"/api/v1/trees/{tid}/{path}", json=body, headers=h)).json()["id"]
+
+    p1 = await mk("persons", {"given": "A"})
+    p2 = await mk("persons", {"given": "B"})
+    rid = await mk(
+        "relationships",
+        {
+            "type": "parent_child",
+            "person_from_id": p1,
+            "person_to_id": p2,
+            "qualifier": "biological",
+        },
+    )
+    r = await client.patch(
+        f"/api/v1/trees/{tid}/relationships/{rid}", json={"qualifier": "adoptive"}, headers=h
+    )
+    assert r.status_code == 200 and r.json()["qualifier"] == "adoptive"
+
+    src = await mk("sources", {"title": "S"})
+    cid = await mk("citations", {"source_id": src, "person_id": p1})
+    r2 = await client.patch(
+        f"/api/v1/trees/{tid}/citations/{cid}",
+        json={"page": "p.7", "confidence": "high"},
+        headers=h,
+    )
+    assert r2.status_code == 200
+    assert r2.json()["page"] == "p.7" and r2.json()["confidence"] == "high"

backend/tests/test_graph.py

@@ -48,6 +48,25 @@ async def test_event_create_list_delete(client):
     assert len(listed.json()) == 0
 
 
+async def test_event_update(client):
+    h, tree_id, parent, _ = await _setup_tree_with_two_people(client, "evupd@example.com")
+    eid = (
+        await client.post(
+            f"/api/v1/trees/{tree_id}/events",
+            json={"event_type": "birth", "person_id": parent, "date_value": "1850"},
+            headers=h,
+        )
+    ).json()["id"]
+    resp = await client.patch(
+        f"/api/v1/trees/{tree_id}/events/{eid}",
+        json={"date_value": "ABT 1851", "event_type": "baptism"},
+        headers=h,
+    )
+    assert resp.status_code == 200, resp.text
+    assert resp.json()["date_value"] == "ABT 1851"
+    assert resp.json()["event_type"] == "baptism"
+
+
 async def test_event_requires_exactly_one_subject(client):
     h, tree_id, _, _ = await _setup_tree_with_two_people(client, "ev2@example.com")
     resp = await client.post(

backend/tests/test_privacy_living.py

@@ -0,0 +1,36 @@
+"""Living-person protection: living people are redacted from non-members."""
+
+from tests.conftest import auth, register
+
+
+async def test_living_person_redacted_for_non_members(client):
+    owner = auth(await register(client, "pub-owner@example.com"))
+    tid = (
+        await client.post(
+            "/api/v1/trees", json={"name": "Public", "visibility": "public"}, headers=owner
+        )
+    ).json()["id"]
+    await client.post(
+        f"/api/v1/trees/{tid}/persons",
+        json={"given": "Old", "surname": "Ancestor", "is_living": False},
+        headers=owner,
+    )
+    await client.post(
+        f"/api/v1/trees/{tid}/persons",
+        json={"given": "Young", "surname": "Living", "is_living": True},
+        headers=owner,
+    )
+
+    other = auth(await register(client, "pub-viewer@example.com"))
+    people = (await client.get(f"/api/v1/trees/{tid}/persons", headers=other)).json()
+    names = {p["primary_name"] for p in people}
+    assert "Old Ancestor" in names  # deceased is visible
+    assert "Living person" in names  # living is redacted
+    assert "Young Living" not in names  # the real living name is hidden
+    # The redacted person leaks no gender.
+    living = next(p for p in people if p["primary_name"] == "Living person")
+    assert living["gender"] is None
+
+    # The owner (a member) sees real names.
+    owner_people = (await client.get(f"/api/v1/trees/{tid}/persons", headers=owner)).json()
+    assert "Young Living" in {p["primary_name"] for p in owner_people}

backend/tests/test_search.py

@@ -0,0 +1,24 @@
+"""Fuzzy name search (pg_trgm)."""
+
+from tests.conftest import auth, register
+
+
+async def test_fuzzy_name_search(client):
+    h = auth(await register(client, "search@example.com"))
+    tid = (await client.post("/api/v1/trees", json={"name": "S"}, headers=h)).json()["id"]
+    for given, surname in [("Hans", "Mueller"), ("John", "Smith"), ("Anna", "Vogel")]:
+        await client.post(
+            f"/api/v1/trees/{tid}/persons",
+            json={"given": given, "surname": surname},
+            headers=h,
+        )
+
+    # Trigram fuzziness: "muller" should find "Mueller" (not a substring match).
+    r = await client.get(f"/api/v1/trees/{tid}/persons", params={"q": "muller"}, headers=h)
+    assert r.status_code == 200
+    names = [p["primary_name"] or "" for p in r.json()]
+    assert any("Mueller" in n for n in names)
+
+    # Substring search still works.
+    r2 = await client.get(f"/api/v1/trees/{tid}/persons", params={"q": "smi"}, headers=h)
+    assert any("Smith" in (p["primary_name"] or "") for p in r2.json())

frontend/app/trees/[id]/page.tsx

@@ -34,6 +34,7 @@ export default function FamilyViewPage() {
   const [ready, setReady] = useState(false);
   const [focusId, setFocusId] = useState<string | null>(null);
   const [search, setSearch] = useState("");
+  const [results, setResults] = useState<Person[] | null>(null); // server fuzzy search
   const [firstName, setFirstName] = useState("");
   // Inline add-relative form: which anchor + kind is open, and the typed name.
   // `key` keeps each empty slot's inline form independent (a person has 2
@@ -65,6 +66,22 @@ export default function FamilyViewPage() {
     load();
   }, [load]);
 
+  // Debounced server-side fuzzy search (pg_trgm) across the whole tree.
+  useEffect(() => {
+    const q = search.trim();
+    if (!q) {
+      setResults(null);
+      return;
+    }
+    const t = setTimeout(async () => {
+      const { data } = await api.GET("/api/v1/trees/{tree_id}/persons", {
+        params: { path: { tree_id: treeId }, query: { q } },
+      });
+      setResults(data ?? []);
+    }, 250);
+    return () => clearTimeout(t);
+  }, [search, treeId]);
+
   const byId = useMemo(() => new Map(people.map((p) => [p.id, p])), [people]);
   const parentsOf = (id: string) =>
     rels.filter((r) => r.type === "parent_child" && r.person_to_id === id).map((r) => r.person_from_id);
@@ -105,23 +122,42 @@ export default function FamilyViewPage() {
     load();
   }
 
+  async function postRel(body: components["schemas"]["RelationshipCreate"]) {
+    await api.POST("/api/v1/trees/{tree_id}/relationships", {
+      params: { path: { tree_id: treeId } },
+      body,
+    });
+  }
+
+  // Create the relationship(s) connecting an (existing or new) person to anchor.
+  async function createLink(kind: AddKind, anchor: string, personId: string) {
+    if (kind === "parent") {
+      await postRel({ type: "parent_child", person_from_id: personId, person_to_id: anchor, qualifier: "biological" });
+    } else if (kind === "partner") {
+      await postRel({ type: "partnership", person_from_id: anchor, person_to_id: personId });
+    } else {
+      // child: link to anchor, and to anchor's spouse too (so both parents show)
+      await postRel({ type: "parent_child", person_from_id: anchor, person_to_id: personId, qualifier: "biological" });
+      const partners = partnersOf(anchor);
+      if (partners.length === 1) {
+        await postRel({ type: "parent_child", person_from_id: partners[0], person_to_id: personId, qualifier: "biological" });
+      }
+    }
+  }
+
+  async function linkExisting(personId: string) {
+    if (!adding) return;
+    await createLink(adding.kind, adding.anchor, personId);
+    setAdding(null);
+    setAddName("");
+    load();
+  }
+
   async function submitAdd(e: React.FormEvent) {
     e.preventDefault();
     if (!adding || !addName.trim()) return;
     const newId = await addPerson(addName);
-    if (newId) {
-      const { kind, anchor } = adding;
-      const body =
-        kind === "parent"
-          ? { type: "parent_child" as const, person_from_id: newId, person_to_id: anchor, qualifier: "biological" as const }
-          : kind === "child"
-            ? { type: "parent_child" as const, person_from_id: anchor, person_to_id: newId, qualifier: "biological" as const }
-            : { type: "partnership" as const, person_from_id: anchor, person_to_id: newId };
-      await api.POST("/api/v1/trees/{tree_id}/relationships", {
-        params: { path: { tree_id: treeId } },
-        body,
-      });
-    }
+    if (newId) await createLink(adding.kind, adding.anchor, newId);
     setAdding(null);
     setAddName("");
     load();
@@ -193,26 +229,45 @@ export default function FamilyViewPage() {
     label: string;
   }) =>
     adding?.key === formKey ? (
-      <form onSubmit={submitAdd} className="flex w-44 flex-col gap-1">
+      <form onSubmit={submitAdd} className="flex w-56 flex-col gap-1">
         <Input
           autoFocus
           className="h-9"
-          placeholder="Full name"
+          placeholder="Search existing or type a new name"
           value={addName}
           onChange={(e) => setAddName(e.target.value)}
         />
-        <div className="flex gap-1">
-          <Button type="submit" size="sm">
-            Add
-          </Button>
-          <button
-            type="button"
-            onClick={() => setAdding(null)}
-            className="text-xs text-[var(--muted)]"
-          >
-            cancel
-          </button>
-        </div>
+        {addName.trim() && (
+          <div className="overflow-hidden rounded-md border border-[var(--border)] bg-[var(--surface)] text-sm">
+            {people
+              .filter(
+                (p) =>
+                  p.id !== anchor &&
+                  (p.primary_name ?? "").toLowerCase().includes(addName.trim().toLowerCase()),
+              )
+              .slice(0, 6)
+              .map((p) => (
+                <button
+                  key={p.id}
+                  type="button"
+                  onClick={() => linkExisting(p.id)}
+                  className="flex w-full items-center justify-between gap-2 px-2 py-1.5 text-left hover:bg-bronze/[0.07]"
+                >
+                  <span className="truncate">{p.primary_name ?? "Unnamed"}</span>
+                  <span className="shrink-0 text-xs text-[var(--muted)]">{years.get(p.id) ?? ""}</span>
+                </button>
+              ))}
+            <button
+              type="submit"
+              className="flex w-full items-center gap-1 border-t border-[var(--border)] px-2 py-1.5 text-left text-bronze hover:bg-bronze/[0.07]"
+            >
+              + Create new “{addName.trim()}”
+            </button>
+          </div>
+        )}
+        <button type="button" onClick={() => setAdding(null)} className="text-xs text-[var(--muted)]">
+          cancel
+        </button>
       </form>
     ) : (
       <button
@@ -265,10 +320,9 @@ export default function FamilyViewPage() {
   const sorted = [...people].sort((a, b) =>
     (a.primary_name ?? "").localeCompare(b.primary_name ?? ""),
   );
-  const matches = search
-    ? sorted.filter((p) => (p.primary_name ?? "").toLowerCase().includes(search.toLowerCase()))
-    : sorted;
-  const shown = matches.slice(0, 200); // cap DOM nodes; refine search to narrow
+  // Server fuzzy results when searching; otherwise the loaded set.
+  const directory = results ?? sorted;
+  const shown = directory.slice(0, 200); // cap DOM nodes; refine search to narrow
 
   return (
     <div className="space-y-8">
@@ -358,9 +412,9 @@ export default function FamilyViewPage() {
               ))
             )}
           </div>
-          {matches.length > shown.length && (
+          {directory.length > shown.length && (
             <div className="border-t border-[var(--border)] bg-[var(--surface)] px-4 py-2 text-xs text-[var(--muted)]">
-              Showing {shown.length} of {matches.length} — refine your search to narrow.
+              Showing {shown.length} of {directory.length} — refine your search to narrow.
             </div>
           )}
         </Card>

frontend/app/trees/[id]/persons/[personId]/page.tsx

@@ -33,6 +33,53 @@ const GED_MON = ["", "JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SE
 const DATE_QUALS: Record<string, string> = { exact: "", about: "ABT", before: "BEF", after: "AFT" };
 const pad = (n: number, len: number) => String(n).padStart(len, "0");
 
+function composeDate(qual: string, day: string, month: string, year: string) {
+  const y = year.trim();
+  if (!y || Number.isNaN(Number(y))) {
+    return { date_value: null as string | null, date_start: null as string | null, date_precision: null as string | null };
+  }
+  const m = month ? Number(month) : null;
+  const d = day.trim() ? Number(day) : null;
+  const parts: string[] = [];
+  if (d && m) parts.push(String(d));
+  if (m) parts.push(GED_MON[m]);
+  parts.push(y);
+  const prefix = DATE_QUALS[qual];
+  return {
+    date_value: (prefix ? `${prefix} ` : "") + parts.join(" "),
+    date_start: `${pad(Number(y), 4)}-${pad(m ?? 1, 2)}-${pad(d ?? 1, 2)}`,
+    date_precision: qual,
+  };
+}
+
+// Parse a stored date_value (e.g. "ABT 12 MAR 1900") back into form fields.
+function parseDateValue(v: string | null | undefined) {
+  let qual = "exact";
+  let day = "";
+  let month = "";
+  let year = "";
+  if (v) {
+    let s = v.trim();
+    const up = s.toUpperCase();
+    for (const [q, pre] of Object.entries(DATE_QUALS)) {
+      if (pre && up.startsWith(`${pre} `)) {
+        qual = q;
+        s = s.slice(pre.length + 1).trim();
+        break;
+      }
+    }
+    for (const t of s.toUpperCase().split(/\s+/).filter(Boolean)) {
+      if (/^\d{3,4}$/.test(t) && !year) year = t;
+      else if (/^\d{1,2}$/.test(t)) day = String(Number(t));
+      else {
+        const mi = GED_MON.indexOf(t);
+        if (mi > 0) month = String(mi);
+      }
+    }
+  }
+  return { qual, day, month, year };
+}
+
 export default function PersonDetailPage() {
   const router = useRouter();
   const params = useParams<{ id: string; personId: string }>();
@@ -54,6 +101,23 @@ export default function PersonDetailPage() {
   const [dateMonth, setDateMonth] = useState("");
   const [dateYear, setDateYear] = useState("");
 
+  // Inline edit-event form.
+  const [editId, setEditId] = useState<string | null>(null);
+  const [edType, setEdType] = useState("birth");
+  const [edTypeOther, setEdTypeOther] = useState("");
+  const [edQual, setEdQual] = useState("exact");
+  const [edDay, setEdDay] = useState("");
+  const [edMonth, setEdMonth] = useState("");
+  const [edYear, setEdYear] = useState("");
+
+  // Inline edit-person form (name + vitals).
+  const [editingPerson, setEditingPerson] = useState(false);
+  const [pGiven, setPGiven] = useState("");
+  const [pSurname, setPSurname] = useState("");
+  const [pGender, setPGender] = useState("");
+  const [pLiving, setPLiving] = useState("unknown");
+  const [pPrivacy, setPPrivacy] = useState<"inherit" | "private" | "public">("inherit");
+
   const [relKind, setRelKind] = useState<"parent" | "child" | "partner" | "sibling">("parent");
   const [relOther, setRelOther] = useState("");
   const [relQual, setRelQual] = useState<Qualifier>("biological");
@@ -112,30 +176,16 @@ export default function PersonDetailPage() {
   const eventCites = (id: string) => citations.filter((c) => c.event_id === id);
   const personCites = citations.filter((c) => c.person_id === personId);
 
-  function buildDate() {
-    const year = dateYear.trim();
-    if (!year || Number.isNaN(Number(year))) {
-      return { date_value: null, date_start: null, date_precision: null };
-    }
-    const m = dateMonth ? Number(dateMonth) : null;
-    const d = dateDay.trim() ? Number(dateDay) : null;
-    const parts: string[] = [];
-    if (d && m) parts.push(String(d));
-    if (m) parts.push(GED_MON[m]);
-    parts.push(year);
-    const prefix = DATE_QUALS[dateQual];
-    return {
-      date_value: (prefix ? `${prefix} ` : "") + parts.join(" "),
-      date_start: `${pad(Number(year), 4)}-${pad(m ?? 1, 2)}-${pad(d ?? 1, 2)}`,
-      date_precision: dateQual,
-    };
-  }
-
   async function addEvent(e: React.FormEvent) {
     e.preventDefault();
     const event_type = evType === "other" ? evTypeOther.trim() : evType;
     if (!event_type) return;
-    const { date_value, date_start, date_precision } = buildDate();
+    const { date_value, date_start, date_precision } = composeDate(
+      dateQual,
+      dateDay,
+      dateMonth,
+      dateYear,
+    );
     const { error } = await api.POST("/api/v1/trees/{tree_id}/events", {
       params: { path: { tree_id: treeId } },
       body: { event_type, person_id: personId, date_value, date_start, date_precision },
@@ -156,6 +206,33 @@ export default function PersonDetailPage() {
     load();
   }
 
+  function startEdit(ev: Event) {
+    setEditId(ev.id);
+    const known = EVENT_TYPES.includes(ev.event_type);
+    setEdType(known ? ev.event_type : "other");
+    setEdTypeOther(known ? "" : ev.event_type);
+    const parsed = parseDateValue(ev.date_value);
+    setEdQual(parsed.qual);
+    setEdDay(parsed.day);
+    setEdMonth(parsed.month);
+    setEdYear(parsed.year);
+  }
+
+  async function saveEdit() {
+    if (!editId) return;
+    const event_type = edType === "other" ? edTypeOther.trim() : edType;
+    if (!event_type) return;
+    const { date_value, date_start, date_precision } = composeDate(edQual, edDay, edMonth, edYear);
+    const { error } = await api.PATCH("/api/v1/trees/{tree_id}/events/{event_id}", {
+      params: { path: { tree_id: treeId, event_id: editId } },
+      body: { event_type, date_value, date_start, date_precision },
+    });
+    if (!error) {
+      setEditId(null);
+      load();
+    }
+  }
+
   async function addRel(e: React.FormEvent) {
     e.preventDefault();
     if (!relOther) return;
@@ -213,6 +290,33 @@ export default function PersonDetailPage() {
     router.push(`/trees/${treeId}`);
   }
 
+  function startEditPerson(current: Person) {
+    const t = (current.primary_name ?? "").trim().split(/\s+/).filter(Boolean);
+    setPGiven(t.length > 1 ? t.slice(0, -1).join(" ") : (t[0] ?? ""));
+    setPSurname(t.length > 1 ? t[t.length - 1] : "");
+    setPGender(current.gender ?? "");
+    setPLiving(current.is_living === true ? "living" : current.is_living === false ? "deceased" : "unknown");
+    setPPrivacy((current.privacy as "inherit" | "private" | "public") ?? "inherit");
+    setEditingPerson(true);
+  }
+
+  async function savePerson() {
+    const { error } = await api.PATCH("/api/v1/trees/{tree_id}/persons/{person_id}", {
+      params: { path: { tree_id: treeId, person_id: personId } },
+      body: {
+        given: pGiven || null,
+        surname: pSurname || null,
+        gender: pGender || null,
+        is_living: pLiving === "living" ? true : pLiving === "deceased" ? false : null,
+        privacy: pPrivacy,
+      },
+    });
+    if (!error) {
+      setEditingPerson(false);
+      load();
+    }
+  }
+
   if (!ready) return <p className="text-[var(--muted)]">Loading…</p>;
   if (!person) return <p className="text-[var(--muted)]">Not found.</p>;
 
@@ -316,15 +420,56 @@ export default function PersonDetailPage() {
         ← Back to tree
       </Link>
 
-      <div className="flex flex-wrap items-center justify-between gap-2">
-        <h1 className="text-3xl font-semibold">{person.primary_name ?? "Unnamed person"}</h1>
-        <div className="flex items-center gap-3">
-          {citeControl("p", { person_id: personId }, personCites)}
-          <Button variant="ghost" size="sm" onClick={removePerson}>
-            Delete
-          </Button>
+      {editingPerson ? (
+        <form
+          onSubmit={(e) => {
+            e.preventDefault();
+            savePerson();
+          }}
+          className="space-y-3 rounded-lg border border-[var(--border)] p-4"
+        >
+          <div className="flex flex-wrap gap-2">
+            <Input className="w-40" placeholder="Given name" value={pGiven} onChange={(e) => setPGiven(e.target.value)} />
+            <Input className="w-40" placeholder="Surname" value={pSurname} onChange={(e) => setPSurname(e.target.value)} />
+            <Input className="w-32" placeholder="Gender" value={pGender} onChange={(e) => setPGender(e.target.value)} />
+            <select className={fieldCls} value={pLiving} onChange={(e) => setPLiving(e.target.value)}>
+              <option value="unknown">Status: unknown</option>
+              <option value="living">Living</option>
+              <option value="deceased">Deceased</option>
+            </select>
+            <select
+              className={fieldCls}
+              value={pPrivacy}
+              onChange={(e) => setPPrivacy(e.target.value as "inherit" | "private" | "public")}
+            >
+              <option value="inherit">Privacy: default</option>
+              <option value="private">Private</option>
+              <option value="public">Public</option>
+            </select>
+          </div>
+          <div className="flex gap-2">
+            <Button type="submit" size="sm">
+              Save
+            </Button>
+            <button type="button" onClick={() => setEditingPerson(false)} className="text-xs text-[var(--muted)]">
+              cancel
+            </button>
+          </div>
+        </form>
+      ) : (
+        <div className="flex flex-wrap items-center justify-between gap-2">
+          <h1 className="text-3xl font-semibold">{person.primary_name ?? "Unnamed person"}</h1>
+          <div className="flex items-center gap-3">
+            {citeControl("p", { person_id: personId }, personCites)}
+            <Button variant="outline" size="sm" onClick={() => startEditPerson(person)}>
+              Edit
+            </Button>
+            <Button variant="ghost" size="sm" onClick={removePerson}>
+              Delete
+            </Button>
+          </div>
         </div>
-      </div>
+      )}
 
       <Card>
         <CardHeader>
@@ -335,26 +480,98 @@ export default function PersonDetailPage() {
             <p className="text-sm text-[var(--muted)]">No events yet.</p>
           ) : (
             <ul className="space-y-2">
-              {events.map((ev) => (
-                <li key={ev.id} className="flex flex-wrap items-center justify-between gap-2 text-sm">
-                  <span>
-                    <span className="font-medium capitalize">{ev.event_type}</span>
-                    {ev.date_value ? (
-                      <span className="text-[var(--muted)]"> — {ev.date_value}</span>
-                    ) : null}
-                  </span>
-                  <span className="flex items-center gap-3">
-                    {citeControl(`e:${ev.id}`, { event_id: ev.id }, eventCites(ev.id))}
-                    <button
-                      onClick={() => removeEvent(ev.id)}
-                      className="text-[var(--muted)] hover:text-bronze"
-                      aria-label="Remove"
+              {events.map((ev) =>
+                editId === ev.id ? (
+                  <li key={ev.id}>
+                    <form
+                      onSubmit={(e) => {
+                        e.preventDefault();
+                        saveEdit();
+                      }}
+                      className="flex flex-wrap items-end gap-2"
                     >
-                      ×
-                    </button>
-                  </span>
-                </li>
-              ))}
+                      <select
+                        className={`${fieldCls} capitalize`}
+                        value={edType}
+                        onChange={(e) => setEdType(e.target.value)}
+                      >
+                        {EVENT_TYPES.map((t) => (
+                          <option key={t} value={t} className="capitalize">
+                            {t}
+                          </option>
+                        ))}
+                      </select>
+                      {edType === "other" && (
+                        <Input
+                          className="h-9 w-32"
+                          placeholder="Custom"
+                          value={edTypeOther}
+                          onChange={(e) => setEdTypeOther(e.target.value)}
+                        />
+                      )}
+                      <select className={fieldCls} value={edQual} onChange={(e) => setEdQual(e.target.value)}>
+                        <option value="exact">on</option>
+                        <option value="about">about</option>
+                        <option value="before">before</option>
+                        <option value="after">after</option>
+                      </select>
+                      <input
+                        className={`${fieldCls} w-14`}
+                        inputMode="numeric"
+                        placeholder="Day"
+                        value={edDay}
+                        onChange={(e) => setEdDay(e.target.value)}
+                      />
+                      <select className={fieldCls} value={edMonth} onChange={(e) => setEdMonth(e.target.value)}>
+                        <option value="">—</option>
+                        {MONTHS.map((m, i) => (i > 0 ? <option key={i} value={i}>{m}</option> : null))}
+                      </select>
+                      <input
+                        className={`${fieldCls} w-20`}
+                        inputMode="numeric"
+                        placeholder="Year"
+                        value={edYear}
+                        onChange={(e) => setEdYear(e.target.value)}
+                      />
+                      <Button type="submit" size="sm">
+                        Save
+                      </Button>
+                      <button
+                        type="button"
+                        onClick={() => setEditId(null)}
+                        className="text-xs text-[var(--muted)]"
+                      >
+                        cancel
+                      </button>
+                    </form>
+                  </li>
+                ) : (
+                  <li key={ev.id} className="flex flex-wrap items-center justify-between gap-2 text-sm">
+                    <span>
+                      <span className="font-medium capitalize">{ev.event_type}</span>
+                      {ev.date_value ? (
+                        <span className="text-[var(--muted)]"> — {ev.date_value}</span>
+                      ) : null}
+                    </span>
+                    <span className="flex items-center gap-3">
+                      {citeControl(`e:${ev.id}`, { event_id: ev.id }, eventCites(ev.id))}
+                      <button
+                        onClick={() => startEdit(ev)}
+                        className="text-xs text-bronze hover:underline"
+                      >
+                        edit
+                      </button>
+                      <button
+                        onClick={() => removeEvent(ev.id)}
+                        className="text-[var(--muted)] hover:text-bronze"
+                        aria-label="Remove"
+                      >
+                        ×
+                      </button>
+                    </span>
+                  </li>
+                ),
+              )}
             </ul>
           )}
           <form onSubmit={addEvent} className="flex flex-wrap items-end gap-2">

frontend/app/trees/[id]/tree/page.tsx

@@ -3,14 +3,19 @@
 // Vendored from family-chart/dist/styles (the package blocks the CSS subpath export).
 import "./chart.css";
 
+import Link from "next/link";
 import { useParams, useRouter } from "next/navigation";
-import { useEffect, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 
 import { api } from "@/lib/api/client";
 import type { components } from "@/lib/api/schema";
+import { Button } from "@/components/ui/button";
+import { FanChart } from "@/components/fan-chart";
 
+type Person = components["schemas"]["PersonRead"];
 type Relationship = components["schemas"]["RelationshipRead"];
 type Event = components["schemas"]["EventRead"];
+type Mode = "landscape" | "portrait" | "fan";
 
 function splitName(name: string | null | undefined): [string, string] {
   const t = (name ?? "").trim().split(/\s+/).filter(Boolean);
@@ -23,11 +28,16 @@ export default function TreePage() {
   const params = useParams<{ id: string }>();
   const treeId = params.id;
   const containerRef = useRef<HTMLDivElement>(null);
+
+  const [people, setPeople] = useState<Person[]>([]);
+  const [rels, setRels] = useState<Relationship[]>([]);
+  const [events, setEvents] = useState<Event[]>([]);
   const [status, setStatus] = useState<"loading" | "empty" | "ready" | "error">("loading");
+  const [focusId, setFocusId] = useState<string | null>(null);
+  const [mode, setMode] = useState<Mode>("landscape");
 
   useEffect(() => {
     let cancelled = false;
-
     (async () => {
       const p = await api.GET("/api/v1/trees/{tree_id}/persons", {
         params: { path: { tree_id: treeId } },
@@ -40,31 +50,56 @@ export default function TreePage() {
         api.GET("/api/v1/trees/{tree_id}/relationships", { params: { path: { tree_id: treeId } } }),
         api.GET("/api/v1/trees/{tree_id}/events", { params: { path: { tree_id: treeId } } }),
       ]);
-      const people = p.data ?? [];
-      const rels: Relationship[] = r.data ?? [];
-      const events: Event[] = e.data ?? [];
-      if (people.length === 0) {
-        if (!cancelled) setStatus("empty");
-        return;
-      }
-
-      const parentsOf = (id: string) =>
-        rels.filter((x) => x.type === "parent_child" && x.person_to_id === id).map((x) => x.person_from_id);
-      const childrenOf = (id: string) =>
-        rels.filter((x) => x.type === "parent_child" && x.person_from_id === id).map((x) => x.person_to_id);
-      const partnersOf = (id: string) =>
-        rels
-          .filter((x) => x.type === "partnership" && (x.person_from_id === id || x.person_to_id === id))
-          .map((x) => (x.person_from_id === id ? x.person_to_id : x.person_from_id));
-
-      const birthYear = new Map<string, string>();
-      for (const ev of events) {
-        if (ev.person_id && ev.event_type === "birth" && !birthYear.has(ev.person_id)) {
-          const y = ev.date_start ? ev.date_start.slice(0, 4) : ev.date_value ?? "";
-          if (y) birthYear.set(ev.person_id, y);
-        }
+      if (cancelled) return;
+      const ppl = p.data ?? [];
+      setPeople(ppl);
+      setRels(r.data ?? []);
+      setEvents(e.data ?? []);
+      setFocusId((cur) => cur ?? ppl[0]?.id ?? null);
+      setStatus(ppl.length ? "ready" : "empty");
+    })().catch(() => !cancelled && setStatus("error"));
+    return () => {
+      cancelled = true;
+    };
+  }, [router, treeId]);
+
+  const byId = useMemo(() => new Map(people.map((p) => [p.id, p])), [people]);
+  const parentsOf = useCallback(
+    (id: string) =>
+      rels.filter((x) => x.type === "parent_child" && x.person_to_id === id).map((x) => x.person_from_id),
+    [rels],
+  );
+  const childrenOf = useCallback(
+    (id: string) =>
+      rels.filter((x) => x.type === "parent_child" && x.person_from_id === id).map((x) => x.person_to_id),
+    [rels],
+  );
+  const partnersOf = useCallback(
+    (id: string) =>
+      rels
+        .filter((x) => x.type === "partnership" && (x.person_from_id === id || x.person_to_id === id))
+        .map((x) => (x.person_from_id === id ? x.person_to_id : x.person_from_id)),
+    [rels],
+  );
+  const years = useMemo(() => {
+    const m = new Map<string, string>();
+    for (const ev of events) {
+      if (ev.person_id && ev.event_type === "birth" && !m.has(ev.person_id)) {
+        const y = ev.date_start ? ev.date_start.slice(0, 4) : ev.date_value ?? "";
+        if (y) m.set(ev.person_id, y);
       }
+    }
+    return m;
+  }, [events]);
+  const nameOf = useCallback((id: string) => byId.get(id)?.primary_name ?? "Unknown", [byId]);
+  const yearOf = useCallback((id: string) => years.get(id) ?? "", [years]);
 
+  // family-chart for landscape/portrait. Intentionally not keyed on focusId —
+  // card clicks recenter via updateMainId without rebuilding the chart.
+  useEffect(() => {
+    if (status !== "ready" || mode === "fan" || !containerRef.current) return;
+    let cancelled = false;
+    (async () => {
       const data = people.map((pp) => {
         const [fn, ln] = splitName(pp.primary_name);
         return {
@@ -72,56 +107,98 @@ export default function TreePage() {
           data: {
             "first name": fn || "Unnamed",
             "last name": ln,
-            birthday: birthYear.get(pp.id) ?? "",
+            birthday: years.get(pp.id) ?? "",
             gender: pp.gender === "female" ? "F" : "M",
           },
-          rels: {
-            spouses: partnersOf(pp.id),
-            parents: parentsOf(pp.id),
-            children: childrenOf(pp.id),
-          },
+          rels: { spouses: partnersOf(pp.id), parents: parentsOf(pp.id), children: childrenOf(pp.id) },
         };
       });
-
+      const f3 = await import("family-chart");
       if (cancelled || !containerRef.current) return;
-      try {
-        const f3 = await import("family-chart");
-        containerRef.current.innerHTML = "";
-        const chart = f3.createChart(containerRef.current, data);
-        chart.setCardHtml().setCardDisplay([["first name", "last name"], ["birthday"]]);
-        chart.updateTree({ initial: true });
-        if (!cancelled) setStatus("ready");
-      } catch {
-        if (!cancelled) setStatus("error");
-      }
-    })().catch(() => {
-      if (!cancelled) setStatus("error");
-    });
-
+      containerRef.current.innerHTML = "";
+      const chart = f3.createChart(containerRef.current, data);
+      chart
+        .setCardHtml()
+        .setCardDisplay([["first name", "last name"], ["birthday"]])
+        .setOnCardClick((_e: unknown, d: { data?: { id?: string } }) => {
+          const id = d?.data?.id;
+          if (id) {
+            setFocusId(id);
+            chart.updateMainId(id);
+            chart.updateTree();
+          }
+        });
+      if (mode === "portrait") chart.setOrientationVertical();
+      else chart.setOrientationHorizontal();
+      if (focusId) chart.updateMainId(focusId);
+      chart.updateTree({ initial: true });
+    })();
     return () => {
       cancelled = true;
     };
-  }, [router, treeId]);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [status, mode, people, rels, events]);
+
+  const ModeButton = ({ m, label }: { m: Mode; label: string }) => (
+    <button
+      onClick={() => setMode(m)}
+      className={`rounded-md px-3 py-1.5 text-sm transition-colors ${
+        mode === m ? "bg-bronze text-paper" : "text-[var(--muted)] hover:text-[var(--foreground)]"
+      }`}
+    >
+      {label}
+    </button>
+  );
 
   return (
     <div className="space-y-4">
-      <div className="flex flex-wrap items-center justify-between gap-2">
+      <div className="flex flex-wrap items-center justify-between gap-3">
         <h1 className="text-2xl font-semibold">Tree</h1>
-        <span className="text-sm text-[var(--muted)]">
-          Drag to pan · scroll to zoom · click a person to recenter
-        </span>
+        <div className="flex items-center gap-3">
+          <div className="flex items-center rounded-lg border border-[var(--border)] p-0.5">
+            <ModeButton m="landscape" label="Landscape" />
+            <ModeButton m="portrait" label="Portrait" />
+            <ModeButton m="fan" label="Fan" />
+          </div>
+          {focusId && (
+            <Link
+              href={`/trees/${treeId}/persons/${focusId}`}
+              className="text-sm text-bronze hover:underline"
+            >
+              Open {nameOf(focusId)} →
+            </Link>
+          )}
+        </div>
       </div>
+
       {status === "empty" && (
-        <p className="text-[var(--muted)]">
-          No people yet — add some under People, or import a GEDCOM.
-        </p>
+        <p className="text-[var(--muted)]">No people yet — add some under People, or import a GEDCOM.</p>
       )}
       {status === "error" && <p className="text-[var(--muted)]">Could not render the tree.</p>}
-      <div
-        ref={containerRef}
-        className="f3 rounded-xl border border-[var(--border)]"
-        style={{ width: "100%", height: "74vh", background: "var(--surface)" }}
-      />
+
+      {status === "ready" && mode === "fan" && focusId ? (
+        <div className="rounded-xl border border-[var(--border)] bg-[var(--surface)] p-4">
+          <FanChart
+            focusId={focusId}
+            parentsOf={parentsOf}
+            nameOf={nameOf}
+            yearOf={yearOf}
+            onSelect={setFocusId}
+          />
+        </div>
+      ) : (
+        <div
+          ref={containerRef}
+          className="f3 rounded-xl border border-[var(--border)]"
+          style={{ width: "100%", height: "74vh", background: "var(--surface)" }}
+        />
+      )}
+
+      <p className="text-sm text-[var(--muted)]">
+        {mode === "fan"
+          ? "Click an ancestor to recenter the fan."
+          : "Drag to pan · scroll to zoom · click a person to recenter."}
+      </p>
     </div>
   );
 }

frontend/components/fan-chart.tsx

@@ -0,0 +1,128 @@
+"use client";
+
+// Radial fan chart of a focus person's ancestors (family-chart has no fan).
+// Each generation is a ring; slot p in generation g descends from slot floor(p/2)
+// in g-1. Click a wedge to refocus.
+
+type Props = {
+  focusId: string;
+  parentsOf: (id: string) => string[];
+  nameOf: (id: string) => string;
+  yearOf: (id: string) => string;
+  onSelect: (id: string) => void;
+  generations?: number;
+};
+
+const SIZE = 720;
+const CENTER = SIZE / 2;
+const FOCUS_R = 46;
+const SPAN = Math.PI * 1.6; // 288° fan
+
+function polar(r: number, a: number): [number, number] {
+  // a = 0 points up, increasing clockwise.
+  return [CENTER + r * Math.sin(a), CENTER - r * Math.cos(a)];
+}
+
+function sector(r0: number, r1: number, a0: number, a1: number): string {
+  const [x0, y0] = polar(r1, a0);
+  const [x1, y1] = polar(r1, a1);
+  const [x2, y2] = polar(r0, a1);
+  const [x3, y3] = polar(r0, a0);
+  const large = a1 - a0 > Math.PI ? 1 : 0;
+  return `M${x0} ${y0} A${r1} ${r1} 0 ${large} 1 ${x1} ${y1} L${x2} ${y2} A${r0} ${r0} 0 ${large} 0 ${x3} ${y3} Z`;
+}
+
+function clip(s: string, n: number): string {
+  return s.length > n ? s.slice(0, n - 1) + "…" : s;
+}
+
+export function FanChart({
+  focusId,
+  parentsOf,
+  nameOf,
+  yearOf,
+  onSelect,
+  generations = 4,
+}: Props) {
+  const gens: (string | null)[][] = [[focusId]];
+  for (let g = 1; g <= generations; g++) {
+    const row: (string | null)[] = [];
+    for (const slot of gens[g - 1]) {
+      const ps = slot ? parentsOf(slot) : [];
+      row.push(ps[0] ?? null, ps[1] ?? null);
+    }
+    gens.push(row);
+  }
+
+  const ringT = (CENTER - 60 - FOCUS_R) / generations;
+  const start = -SPAN / 2;
+  const wedges: React.ReactNode[] = [];
+
+  for (let g = 1; g <= generations; g++) {
+    const row = gens[g];
+    const w = SPAN / row.length;
+    const r0 = FOCUS_R + (g - 1) * ringT;
+    const r1 = FOCUS_R + g * ringT;
+    row.forEach((id, i) => {
+      const a0 = start + i * w;
+      const a1 = start + (i + 1) * w;
+      const mid = (a0 + a1) / 2;
+      const [tx, ty] = polar((r0 + r1) / 2, mid);
+      let deg = (mid * 180) / Math.PI;
+      if (deg > 90 || deg < -90) deg += 180; // keep text upright
+      wedges.push(
+        <g
+          key={`${g}-${i}`}
+          onClick={() => id && onSelect(id)}
+          style={{ cursor: id ? "pointer" : "default" }}
+        >
+          <path
+            d={sector(r0 + 1, r1 - 1, a0 + 0.004, a1 - 0.004)}
+            fill={id ? "var(--surface)" : "transparent"}
+            stroke="var(--border)"
+          />
+          {id && (
+            <text
+              x={tx}
+              y={ty}
+              transform={`rotate(${deg} ${tx} ${ty})`}
+              textAnchor="middle"
+              dominantBaseline="middle"
+              style={{ fontSize: g >= 3 ? 9 : 11, fill: "var(--foreground)" }}
+            >
+              {clip(nameOf(id), g >= 3 ? 12 : 18)}
+            </text>
+          )}
+        </g>,
+      );
+    });
+  }
+
+  const [fx, fy] = [CENTER, CENTER];
+  return (
+    <div className="overflow-auto">
+      <svg viewBox={`0 0 ${SIZE} ${SIZE}`} className="mx-auto block w-full max-w-3xl">
+        {wedges}
+        <circle cx={fx} cy={fy} r={FOCUS_R} fill="var(--color-bronze)" />
+        <text
+          x={fx}
+          y={fy - 4}
+          textAnchor="middle"
+          dominantBaseline="middle"
+          style={{ fontSize: 12, fill: "var(--color-paper)", fontWeight: 600 }}
+        >
+          {clip(nameOf(focusId), 12)}
+        </text>
+        <text
+          x={fx}
+          y={fy + 12}
+          textAnchor="middle"
+          dominantBaseline="middle"
+          style={{ fontSize: 10, fill: "var(--color-paper)" }}
+        >
+          {yearOf(focusId)}
+        </text>
+      </svg>
+    </div>
+  );
+}

frontend/lib/api/schema.d.ts

@@ -243,7 +243,8 @@ export interface paths {
         delete: operations["delete_person_api_v1_trees__tree_id__persons__person_id__delete"];
         options?: never;
         head?: never;
-        patch?: never;
+        /** Update Person */
+        patch: operations["update_person_api_v1_trees__tree_id__persons__person_id__patch"];
         trace?: never;
     };
     "/api/v1/trees/{tree_id}/persons/{person_id}/restore": {
@@ -312,7 +313,8 @@ export interface paths {
         delete: operations["delete_event_api_v1_trees__tree_id__events__event_id__delete"];
         options?: never;
         head?: never;
-        patch?: never;
+        /** Update Event */
+        patch: operations["update_event_api_v1_trees__tree_id__events__event_id__patch"];
         trace?: never;
     };
     "/api/v1/trees/{tree_id}/relationships": {
@@ -676,6 +678,27 @@ export interface components {
              */
             created_at: string;
         };
+        /** EventUpdate */
+        EventUpdate: {
+            /** Event Type */
+            event_type?: string | null;
+            /** Place Id */
+            place_id?: string | null;
+            /** Date Value */
+            date_value?: string | null;
+            /** Date Start */
+            date_start?: string | null;
+            /** Date End */
+            date_end?: string | null;
+            /** Date Precision */
+            date_precision?: string | null;
+            /** Calendar */
+            calendar?: string | null;
+            /** Detail */
+            detail?: string | null;
+            /** Notes */
+            notes?: string | null;
+        };
         /** HTTPValidationError */
         HTTPValidationError: {
             /** Detail */
@@ -798,6 +821,20 @@ export interface components {
              */
             created_at: string;
         };
+        /** PersonUpdate */
+        PersonUpdate: {
+            /** Given */
+            given?: string | null;
+            /** Surname */
+            surname?: string | null;
+            /** Gender */
+            gender?: string | null;
+            /** Is Living */
+            is_living?: boolean | null;
+            privacy?: components["schemas"]["PersonPrivacy"] | null;
+            /** Notes */
+            notes?: string | null;
+        };
         /** RegisterRequest */
         RegisterRequest: {
             /** Email */
@@ -1412,6 +1449,7 @@ export interface operations {
         parameters: {
             query?: {
                 deleted?: boolean;
+                q?: string | null;
             };
             header?: never;
             path: {
@@ -1538,6 +1576,42 @@ export interface operations {
             };
         };
     };
+    update_person_api_v1_trees__tree_id__persons__person_id__patch: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                tree_id: string;
+                person_id: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["PersonUpdate"];
+            };
+        };
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["PersonRead"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
     restore_person_api_v1_trees__tree_id__persons__person_id__restore_post: {
         parameters: {
             query?: never;
@@ -1698,6 +1772,42 @@ export interface operations {
             };
         };
     };
+    update_event_api_v1_trees__tree_id__events__event_id__patch: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                tree_id: string;
+                event_id: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["EventUpdate"];
+            };
+        };
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["EventRead"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
     list_relationships_api_v1_trees__tree_id__relationships_get: {
         parameters: {
             query?: never;

frontend/openapi.json

@@ -564,6 +564,22 @@
               "default": false,
               "title": "Deleted"
             }
+          },
+          {
+            "name": "q",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "title": "Q"
+            }
           }
         ],
         "responses": {
@@ -595,6 +611,67 @@
       }
     },
     "/api/v1/trees/{tree_id}/persons/{person_id}": {
+      "patch": {
+        "tags": [
+          "persons"
+        ],
+        "summary": "Update Person",
+        "operationId": "update_person_api_v1_trees__tree_id__persons__person_id__patch",
+        "parameters": [
+          {
+            "name": "tree_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Tree Id"
+            }
+          },
+          {
+            "name": "person_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Person Id"
+            }
+          }
+        ],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/PersonUpdate"
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PersonRead"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/HTTPValidationError"
+                }
+              }
+            }
+          }
+        }
+      },
       "delete": {
         "tags": [
           "persons"
@@ -900,6 +977,67 @@
       }
     },
     "/api/v1/trees/{tree_id}/events/{event_id}": {
+      "patch": {
+        "tags": [
+          "events"
+        ],
+        "summary": "Update Event",
+        "operationId": "update_event_api_v1_trees__tree_id__events__event_id__patch",
+        "parameters": [
+          {
+            "name": "tree_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Tree Id"
+            }
+          },
+          {
+            "name": "event_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Event Id"
+            }
+          }
+        ],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/EventUpdate"
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/EventRead"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/HTTPValidationError"
+                }
+              }
+            }
+          }
+        }
+      },
       "delete": {
         "tags": [
           "events"
@@ -2345,6 +2483,114 @@
         ],
         "title": "EventRead"
       },
+      "EventUpdate": {
+        "properties": {
+          "event_type": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Event Type"
+          },
+          "place_id": {
+            "anyOf": [
+              {
+                "type": "string",
+                "format": "uuid"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Place Id"
+          },
+          "date_value": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Date Value"
+          },
+          "date_start": {
+            "anyOf": [
+              {
+                "type": "string",
+                "format": "date"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Date Start"
+          },
+          "date_end": {
+            "anyOf": [
+              {
+                "type": "string",
+                "format": "date"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Date End"
+          },
+          "date_precision": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Date Precision"
+          },
+          "calendar": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Calendar"
+          },
+          "detail": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Detail"
+          },
+          "notes": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Notes"
+          }
+        },
+        "type": "object",
+        "title": "EventUpdate"
+      },
       "HTTPValidationError": {
         "properties": {
           "detail": {
@@ -2693,6 +2939,77 @@
         ],
         "title": "PersonRead"
       },
+      "PersonUpdate": {
+        "properties": {
+          "given": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Given"
+          },
+          "surname": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Surname"
+          },
+          "gender": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Gender"
+          },
+          "is_living": {
+            "anyOf": [
+              {
+                "type": "boolean"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Is Living"
+          },
+          "privacy": {
+            "anyOf": [
+              {
+                "$ref": "#/components/schemas/PersonPrivacy"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "notes": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Notes"
+          }
+        },
+        "type": "object",
+        "title": "PersonUpdate"
+      },
       "RegisterRequest": {
         "properties": {
           "email": {