Add an interactive Tree view (pan/zoom genealogy chart)

Researched how FamilySearch/Geni/MyHeritage lay out trees (switchable pedigree/portrait/fan, an interactive canvas with pan/zoom + click-to-recenter, gender colors, birth-death years) and built a real Tree page on the MIT d3 library family-chart instead of a flat list. Ancestors + descendants around a focus person, click any card to recenter, drag to pan, scroll to zoom — scales to large imported trees. Tree is now the first per-tree sidebar item and the default when opening a tree; People keeps the searchable directory + add/edit.

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

backend/app/api/v1/__init__.py

@@ -6,6 +6,7 @@ from app.api.v1 import (
     auth,
     citations,
     events,
+    gedcom,
     media,
     persons,
     relationships,
@@ -24,3 +25,4 @@ api_router.include_router(relationships.router)
 api_router.include_router(sources.router)
 api_router.include_router(citations.router)
 api_router.include_router(media.router)
+api_router.include_router(gedcom.router)

backend/app/api/v1/gedcom.py

@@ -0,0 +1,37 @@
+import uuid
+
+from fastapi import APIRouter, File, Response, UploadFile
+
+from app.api.deps import CurrentUser, SessionDep
+from app.schemas.gedcom import ImportReport
+from app.services import gedcom, tree_service
+
+router = APIRouter(prefix="/trees", tags=["gedcom"])
+
+
+@router.post("/{tree_id}/gedcom/import", response_model=ImportReport)
+async def import_gedcom(
+    tree_id: uuid.UUID,
+    session: SessionDep,
+    current: CurrentUser,
+    file: UploadFile = File(...),
+) -> ImportReport:
+    # NOTE: additive — records are created as new; existing people are not merged.
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    text = (await file.read()).decode("utf-8", errors="replace")
+    report = await gedcom.import_gedcom(session, actor=current, tree=tree, text=text)
+    return ImportReport(**report)
+
+
+@router.get("/{tree_id}/gedcom/export")
+async def export_gedcom(
+    tree_id: uuid.UUID, session: SessionDep, current: CurrentUser
+) -> Response:
+    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
+    text = await gedcom.export_gedcom(session, viewer_id=current.id, tree=tree)
+    safe = "".join(c for c in tree.name if c.isalnum() or c in " -_").strip() or "tree"
+    return Response(
+        content=text,
+        media_type="text/plain",
+        headers={"Content-Disposition": f'attachment; filename="{safe}.ged"'},
+    )

backend/app/schemas/gedcom.py

@@ -0,0 +1,6 @@
+from pydantic import BaseModel
+
+
+class ImportReport(BaseModel):
+    counts: dict[str, int]
+    unmapped_tags: list[str]

backend/app/services/gedcom.py

@@ -0,0 +1,451 @@
+"""GEDCOM import/export.
+
+A pragmatic parser + mapper for the common subset of GEDCOM (5.5.1 / 7 share
+the line grammar): INDI, FAM, SOUR. Import maps records into a tree and returns
+a mapping report (counts + unmapped tags); export serializes the tree back to
+GEDCOM. Runs inline for now — large files should move to the worker later.
+"""
+
+import re
+import uuid
+from collections import defaultdict
+from datetime import date
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.enums import ParentChildQualifier, RelationshipType
+from app.models.event import Event
+from app.models.person import Name, Person
+from app.models.place import Place
+from app.models.relationship import Relationship
+from app.models.source import Citation, Source
+from app.models.tree import Tree
+from app.models.user import User
+from app.services import privacy
+from app.services.audit import record_audit
+from app.services.exceptions import Forbidden
+
+# GEDCOM event tag -> our event_type (INDI-level).
+INDI_EVENTS = {
+    "BIRT": "birth", "DEAT": "death", "BAPM": "baptism", "CHR": "christening",
+    "BURI": "burial", "CREM": "cremation", "RESI": "residence", "CENS": "census",
+    "IMMI": "immigration", "EMIG": "emigration", "OCCU": "occupation",
+    "EDUC": "education", "GRAD": "graduation", "RETI": "retirement",
+    "NATU": "naturalization", "BAPL": "baptism",
+}
+# FAM-level events.
+FAM_EVENTS = {"MARR": "marriage", "DIV": "divorce", "ENGA": "engagement"}
+EVENT_TO_GED = {v: k for k, v in {**INDI_EVENTS, **FAM_EVENTS}.items()}
+
+
+class GedcomNode:
+    __slots__ = ("level", "tag", "value", "xref", "children")
+
+    def __init__(self, level: int, tag: str, value: str = "", xref: str | None = None):
+        self.level = level
+        self.tag = tag
+        self.value = value
+        self.xref = xref
+        self.children: list[GedcomNode] = []
+
+    def first(self, tag: str) -> "GedcomNode | None":
+        return next((c for c in self.children if c.tag == tag), None)
+
+    def all(self, tag: str) -> list["GedcomNode"]:
+        return [c for c in self.children if c.tag == tag]
+
+    def text(self, tag: str, default: str | None = None) -> str | None:
+        n = self.first(tag)
+        return n.value if n is not None else default
+
+
+def parse_records(text: str) -> list[GedcomNode]:
+    roots: list[GedcomNode] = []
+    stack: list[GedcomNode] = []
+    for raw in text.replace("\r\n", "\n").replace("\r", "\n").split("\n"):
+        line = raw.lstrip("").rstrip()
+        if not line.strip():
+            continue
+        parts = line.split(" ", 1)
+        try:
+            level = int(parts[0])
+        except ValueError:
+            continue
+        rest = parts[1] if len(parts) > 1 else ""
+        xref: str | None = None
+        if rest.startswith("@"):
+            end = rest.find("@", 1)
+            if end != -1:
+                xref = rest[: end + 1]
+                rest = rest[end + 1:].strip()
+        tparts = rest.split(" ", 1)
+        tag = tparts[0]
+        value = tparts[1] if len(tparts) > 1 else ""
+
+        while stack and stack[-1].level >= level:
+            stack.pop()
+        parent = stack[-1] if stack else None
+
+        if tag in ("CONC", "CONT") and parent is not None:
+            parent.value += ("" if tag == "CONC" else "\n") + value
+            continue
+
+        node = GedcomNode(level, tag, value, xref)
+        if parent is None:
+            roots.append(node)
+        else:
+            parent.children.append(node)
+        stack.append(node)
+    return roots
+
+
+def _parse_name(value: str) -> tuple[str | None, str | None]:
+    if "/" in value:
+        given, _, rest = value.partition("/")
+        surname = rest.split("/", 1)[0]
+        return given.strip() or None, surname.strip() or None
+    return value.strip() or None, None
+
+
+def _year(date_value: str | None) -> str | None:
+    if not date_value:
+        return None
+    m = re.search(r"\b(\d{3,4})\b", date_value)
+    return m.group(1) if m else None
+
+
+def _date_start(date_value: str | None) -> date | None:
+    y = _year(date_value)
+    if not y:
+        return None
+    try:
+        return date(int(y), 1, 1)
+    except ValueError:
+        return None
+
+
+def _sex(value: str | None) -> str | None:
+    if not value:
+        return None
+    v = value.strip().upper()
+    return {"M": "male", "F": "female"}.get(v, value.strip().lower() or None)
+
+
+async def import_gedcom(
+    session: AsyncSession, *, actor: User, tree: Tree, text: str
+) -> dict:
+    if not await privacy.can_edit_tree(session, user_id=actor.id, tree=tree):
+        raise Forbidden("not an editor of this tree")
+
+    roots = parse_records(text)
+    counts = defaultdict(int)
+    unmapped: set[str] = set()
+    place_cache: dict[str, uuid.UUID] = {}
+    source_map: dict[str, uuid.UUID] = {}
+    person_map: dict[str, uuid.UUID] = {}
+
+    async def place_id(name: str | None) -> uuid.UUID | None:
+        if not name:
+            return None
+        if name in place_cache:
+            return place_cache[name]
+        p = Place(tree_id=tree.id, name=name)
+        session.add(p)
+        await session.flush()
+        place_cache[name] = p.id
+        counts["places"] += 1
+        return p.id
+
+    # Sources first (so citations can reference them).
+    for rec in roots:
+        if rec.tag == "SOUR" and rec.xref:
+            src = Source(
+                tree_id=tree.id,
+                title=rec.text("TITL") or rec.text("ABBR") or "Untitled source",
+                author=rec.text("AUTH"),
+                publication_info=rec.text("PUBL"),
+                citation_text=rec.text("TEXT"),
+            )
+            session.add(src)
+            await session.flush()
+            source_map[rec.xref] = src.id
+            counts["sources"] += 1
+
+    async def add_citations(holder: GedcomNode, **target) -> None:
+        for s in holder.all("SOUR"):
+            sid = source_map.get(s.value.strip())
+            if sid is None:
+                continue
+            session.add(
+                Citation(tree_id=tree.id, source_id=sid, page=s.text("PAGE"), **target)
+            )
+            counts["citations"] += 1
+
+    # Individuals.
+    for rec in roots:
+        if rec.tag != "INDI" or not rec.xref:
+            continue
+        person = Person(tree_id=tree.id, gender=_sex(rec.text("SEX")))
+        session.add(person)
+        await session.flush()
+        person_map[rec.xref] = person.id
+        counts["persons"] += 1
+
+        for i, nm in enumerate(rec.all("NAME")):
+            given, surname = _parse_name(nm.value)
+            session.add(
+                Name(
+                    tree_id=tree.id,
+                    person_id=person.id,
+                    name_type="birth",
+                    given=given,
+                    surname=surname,
+                    display_name=nm.value or None,
+                    is_primary=(i == 0),
+                    sort_order=i,
+                )
+            )
+            counts["names"] += 1
+
+        await add_citations(rec, person_id=person.id)
+
+        for child in rec.children:
+            if child.tag in INDI_EVENTS:
+                dv = child.text("DATE")
+                ev = Event(
+                    tree_id=tree.id,
+                    person_id=person.id,
+                    event_type=INDI_EVENTS[child.tag],
+                    date_value=dv,
+                    date_start=_date_start(dv),
+                    place_id=await place_id(child.text("PLAC")),
+                )
+                session.add(ev)
+                await session.flush()
+                counts["events"] += 1
+                await add_citations(child, event_id=ev.id)
+            elif child.tag in ("NAME", "SEX", "SOUR", "FAMC", "FAMS", "CHAN", "OBJE", "_UID"):
+                continue
+            else:
+                unmapped.add(child.tag)
+
+    # Families -> partnerships, parent-child edges, marriage events.
+    for rec in roots:
+        if rec.tag != "FAM":
+            continue
+        counts["families"] += 1
+        husb = person_map.get((rec.text("HUSB") or "").strip())
+        wife = person_map.get((rec.text("WIFE") or "").strip())
+        partnership_id: uuid.UUID | None = None
+        if husb and wife:
+            rel = Relationship(
+                tree_id=tree.id,
+                type=RelationshipType.partnership,
+                person_from_id=husb,
+                person_to_id=wife,
+            )
+            session.add(rel)
+            await session.flush()
+            partnership_id = rel.id
+            counts["relationships"] += 1
+
+        for fe in rec.children:
+            if fe.tag in FAM_EVENTS and partnership_id is not None:
+                dv = fe.text("DATE")
+                ev = Event(
+                    tree_id=tree.id,
+                    relationship_id=partnership_id,
+                    event_type=FAM_EVENTS[fe.tag],
+                    date_value=dv,
+                    date_start=_date_start(dv),
+                    place_id=await place_id(fe.text("PLAC")),
+                )
+                session.add(ev)
+                await session.flush()
+                counts["events"] += 1
+
+        for chil in rec.all("CHIL"):
+            cp = person_map.get(chil.value.strip())
+            if cp is None:
+                continue
+            for parent in (husb, wife):
+                if parent and parent != cp:
+                    session.add(
+                        Relationship(
+                            tree_id=tree.id,
+                            type=RelationshipType.parent_child,
+                            person_from_id=parent,
+                            person_to_id=cp,
+                            qualifier=ParentChildQualifier.biological,
+                        )
+                    )
+                    counts["relationships"] += 1
+
+    record_audit(
+        session,
+        action="import",
+        entity_type="Gedcom",
+        tree_id=tree.id,
+        actor_user_id=actor.id,
+        after=dict(counts),
+    )
+    await session.commit()
+    return {"counts": dict(counts), "unmapped_tags": sorted(unmapped)}
+
+
+def _ged_date(value: str | None) -> str | None:
+    return value.strip() if value else None
+
+
+async def export_gedcom(session: AsyncSession, *, viewer_id: uuid.UUID, tree: Tree) -> str:
+    if not await privacy.can_view_tree(session, user_id=viewer_id, tree=tree):
+        raise Forbidden("not permitted to view this tree")
+
+    persons = list(
+        (
+            await session.execute(
+                select(Person).where(Person.tree_id == tree.id, Person.deleted_at.is_(None))
+            )
+        ).scalars().all()
+    )
+    names = list(
+        (
+            await session.execute(
+                select(Name).where(Name.tree_id == tree.id, Name.deleted_at.is_(None))
+            )
+        ).scalars().all()
+    )
+    events = list(
+        (
+            await session.execute(
+                select(Event).where(Event.tree_id == tree.id, Event.deleted_at.is_(None))
+            )
+        ).scalars().all()
+    )
+    rels = list(
+        (
+            await session.execute(
+                select(Relationship).where(
+                    Relationship.tree_id == tree.id, Relationship.deleted_at.is_(None)
+                )
+            )
+        ).scalars().all()
+    )
+    sources = list(
+        (
+            await session.execute(
+                select(Source).where(Source.tree_id == tree.id, Source.deleted_at.is_(None))
+            )
+        ).scalars().all()
+    )
+    places = {
+        p.id: p
+        for p in (
+            await session.execute(select(Place).where(Place.tree_id == tree.id))
+        ).scalars().all()
+    }
+
+    pxref = {p.id: f"@I{i + 1}@" for i, p in enumerate(persons)}
+    gender_by_id = {p.id: p.gender for p in persons}
+    sxref = {s.id: f"@S{i + 1}@" for i, s in enumerate(sources)}
+    names_by_person: dict[uuid.UUID, list[Name]] = defaultdict(list)
+    for n in sorted(names, key=lambda n: (n.sort_order, not n.is_primary)):
+        names_by_person[n.person_id].append(n)
+    events_by_person: dict[uuid.UUID, list[Event]] = defaultdict(list)
+    events_by_rel: dict[uuid.UUID, list[Event]] = defaultdict(list)
+    for e in events:
+        if e.person_id:
+            events_by_person[e.person_id].append(e)
+        elif e.relationship_id:
+            events_by_rel[e.relationship_id].append(e)
+
+    # Build families from parent-child + partnership edges (group by parent set).
+    parents_of: dict[uuid.UUID, set[uuid.UUID]] = defaultdict(set)
+    for r in rels:
+        if r.type == RelationshipType.parent_child:
+            parents_of[r.person_to_id].add(r.person_from_id)
+    fams: dict[frozenset, dict] = {}
+    for child, ps in parents_of.items():
+        key = frozenset(ps)
+        fams.setdefault(key, {"parents": set(ps), "children": [], "rel_id": None})
+        fams[key]["children"].append(child)
+    for r in rels:
+        if r.type == RelationshipType.partnership:
+            key = frozenset({r.person_from_id, r.person_to_id})
+            fam = fams.setdefault(
+                key,
+                {"parents": {r.person_from_id, r.person_to_id}, "children": [], "rel_id": None},
+            )
+            fam["rel_id"] = r.id
+    fam_list = list(fams.values())
+    fxref = {id(f): f"@F{i + 1}@" for i, f in enumerate(fam_list)}
+    # person -> the families they are a spouse in / a child in
+    spouse_fams: dict[uuid.UUID, list[str]] = defaultdict(list)
+    child_fams: dict[uuid.UUID, str] = {}
+    for f in fam_list:
+        x = fxref[id(f)]
+        for pid in f["parents"]:
+            spouse_fams[pid].append(x)
+        for cid in f["children"]:
+            child_fams[cid] = x
+
+    out: list[str] = ["0 HEAD", "1 SOUR Provenance", "1 GEDC", "2 VERS 5.5.1", "1 CHAR UTF-8"]
+
+    for p in persons:
+        out.append(f"0 {pxref[p.id]} INDI")
+        for n in names_by_person.get(p.id, []):
+            display = n.display_name or f"{n.given or ''} /{n.surname or ''}/".strip()
+            out.append(f"1 NAME {display}")
+        sex = {"male": "M", "female": "F"}.get(p.gender or "")
+        if sex:
+            out.append(f"1 SEX {sex}")
+        for e in events_by_person.get(p.id, []):
+            tag = EVENT_TO_GED.get(e.event_type)
+            if not tag:
+                continue
+            out.append(f"1 {tag}")
+            if _ged_date(e.date_value):
+                out.append(f"2 DATE {e.date_value}")
+            if e.place_id and e.place_id in places:
+                out.append(f"2 PLAC {places[e.place_id].name}")
+        if p.id in child_fams:
+            out.append(f"1 FAMC {child_fams[p.id]}")
+        for x in spouse_fams.get(p.id, []):
+            out.append(f"1 FAMS {x}")
+
+    for f in fam_list:
+        x = fxref[id(f)]
+        out.append(f"0 {x} FAM")
+        ps = list(f["parents"])
+        # HUSB/WIFE by recorded gender where possible.
+        males = [pid for pid in ps if gender_by_id.get(pid) == "male"]
+        females = [pid for pid in ps if gender_by_id.get(pid) == "female"]
+        husb = males[0] if males else (ps[0] if ps else None)
+        wife = females[0] if females else next((pid for pid in ps if pid != husb), None)
+        if husb:
+            out.append(f"1 HUSB {pxref[husb]}")
+        if wife:
+            out.append(f"1 WIFE {pxref[wife]}")
+        for cid in f["children"]:
+            out.append(f"1 CHIL {pxref[cid]}")
+        if f["rel_id"]:
+            for e in events_by_rel.get(f["rel_id"], []):
+                tag = EVENT_TO_GED.get(e.event_type)
+                if not tag:
+                    continue
+                out.append(f"1 {tag}")
+                if _ged_date(e.date_value):
+                    out.append(f"2 DATE {e.date_value}")
+
+    for s in sources:
+        out.append(f"0 {sxref[s.id]} SOUR")
+        if s.title:
+            out.append(f"1 TITL {s.title}")
+        if s.author:
+            out.append(f"1 AUTH {s.author}")
+        if s.publication_info:
+            out.append(f"1 PUBL {s.publication_info}")
+
+    out.append("0 TRLR")
+    return "\n".join(out) + "\n"

backend/tests/test_gedcom.py

@@ -0,0 +1,77 @@
+"""GEDCOM import + export round-trip."""
+
+from tests.conftest import auth, register
+
+SAMPLE = b"""0 HEAD
+1 CHAR UTF-8
+0 @I1@ INDI
+1 NAME John /Smith/
+1 SEX M
+1 BIRT
+2 DATE 1850
+2 PLAC Boston, Massachusetts
+0 @I2@ INDI
+1 NAME Mary /Jones/
+1 SEX F
+0 @I3@ INDI
+1 NAME Junior /Smith/
+1 BIRT
+2 DATE 1872
+0 @F1@ FAM
+1 HUSB @I1@
+1 WIFE @I2@
+1 CHIL @I3@
+1 MARR
+2 DATE 1870
+0 TRLR
+"""
+
+
+async def _tree(client, email):
+    h = auth(await register(client, email))
+    tid = (await client.post("/api/v1/trees", json={"name": "Imported"}, headers=h)).json()["id"]
+    return h, tid
+
+
+async def test_gedcom_import(client):
+    h, tid = await _tree(client, "ged1@example.com")
+    resp = await client.post(
+        f"/api/v1/trees/{tid}/gedcom/import",
+        files={"file": ("sample.ged", SAMPLE, "text/plain")},
+        headers=h,
+    )
+    assert resp.status_code == 200, resp.text
+    counts = resp.json()["counts"]
+    assert counts["persons"] == 3
+    assert counts["families"] == 1
+    # partnership (1) + parent_child from both parents to the child (2)
+    assert counts["relationships"] == 3
+    assert counts["events"] == 3  # 2 births + 1 marriage
+
+    people = (await client.get(f"/api/v1/trees/{tid}/persons", headers=h)).json()
+    assert len(people) == 3
+    rels = (await client.get(f"/api/v1/trees/{tid}/relationships", headers=h)).json()
+    assert len(rels) == 3
+
+
+async def test_gedcom_export_and_reimport(client):
+    h, tid = await _tree(client, "ged2@example.com")
+    await client.post(
+        f"/api/v1/trees/{tid}/gedcom/import",
+        files={"file": ("sample.ged", SAMPLE, "text/plain")},
+        headers=h,
+    )
+    exported = await client.get(f"/api/v1/trees/{tid}/gedcom/export", headers=h)
+    assert exported.status_code == 200
+    text = exported.text
+    assert "INDI" in text and "FAM" in text and "John /Smith/" in text
+
+    # Re-import the export into a fresh tree: people are preserved.
+    tid2 = (await client.post("/api/v1/trees", json={"name": "Round"}, headers=h)).json()["id"]
+    resp = await client.post(
+        f"/api/v1/trees/{tid2}/gedcom/import",
+        files={"file": ("rt.ged", text.encode(), "text/plain")},
+        headers=h,
+    )
+    assert resp.json()["counts"]["persons"] == 3
+    assert resp.json()["counts"]["relationships"] == 3

frontend/app/globals.css

@@ -54,3 +54,55 @@ h3,
 ::selection {
   background: color-mix(in srgb, var(--color-bronze) 22%, transparent);
 }
+
+/* Pedigree bracket connectors (ancestors grow rightward). Each leaf draws its
+   own half of the vertical spine + a horizontal stub, so lines stay correct
+   regardless of box heights: focus → 2 parents, each parent → 2 grandparents. */
+.ped-person {
+  display: flex;
+  align-items: center;
+}
+.ped-self {
+  flex-shrink: 0;
+}
+.ped-branch {
+  position: relative;
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+  margin-left: 2.5rem;
+}
+.ped-branch::before {
+  content: "";
+  position: absolute;
+  left: -2.5rem;
+  top: 50%;
+  width: 2.5rem;
+  border-top: 1px solid var(--border);
+}
+.ped-leaf {
+  position: relative;
+  padding-left: 1.5rem;
+}
+.ped-leaf::before {
+  content: "";
+  position: absolute;
+  left: 0;
+  top: 50%;
+  width: 1.5rem;
+  border-top: 1px solid var(--border);
+}
+.ped-leaf::after {
+  content: "";
+  position: absolute;
+  left: 0;
+  top: 0;
+  bottom: 0;
+  border-left: 1px solid var(--border);
+}
+.ped-leaf:first-child::after {
+  top: 50%;
+}
+.ped-leaf:last-child::after {
+  bottom: 50%;
+}

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

@@ -0,0 +1,163 @@
+"use client";
+
+import Link from "next/link";
+import { useParams } from "next/navigation";
+import { useRef, useState } from "react";
+
+import { api } from "@/lib/api/client";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+
+type Report = { counts: Record<string, number>; unmapped_tags: string[] };
+
+export default function GedcomPage() {
+  const params = useParams<{ id: string }>();
+  const treeId = params.id;
+
+  const [target, setTarget] = useState<"new" | "this">("new");
+  const [newName, setNewName] = useState("");
+  const [busy, setBusy] = useState(false);
+  const [report, setReport] = useState<Report | null>(null);
+  const [importedTreeId, setImportedTreeId] = useState<string | null>(null);
+  const fileRef = useRef<HTMLInputElement>(null);
+
+  async function onFile(e: React.ChangeEvent<HTMLInputElement>) {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    setBusy(true);
+    setReport(null);
+    setImportedTreeId(null);
+
+    let tid = treeId;
+    if (target === "new") {
+      const { data } = await api.POST("/api/v1/trees", {
+        body: { name: newName.trim() || "Imported tree" },
+      });
+      if (!data) {
+        setBusy(false);
+        return;
+      }
+      tid = data.id;
+      setImportedTreeId(tid);
+    } else {
+      setImportedTreeId(treeId);
+    }
+
+    const fd = new FormData();
+    fd.append("file", file);
+    const resp = await fetch(`/api/v1/trees/${tid}/gedcom/import`, {
+      method: "POST",
+      body: fd,
+      credentials: "include",
+    });
+    if (resp.ok) setReport(await resp.json());
+    setBusy(false);
+    if (fileRef.current) fileRef.current.value = "";
+  }
+
+  async function exportGed() {
+    const resp = await fetch(`/api/v1/trees/${treeId}/gedcom/export`, {
+      credentials: "include",
+    });
+    if (!resp.ok) return;
+    const blob = await resp.blob();
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = "tree.ged";
+    a.click();
+    URL.revokeObjectURL(url);
+  }
+
+  return (
+    <div className="space-y-6">
+      <h1 className="text-2xl font-semibold">Import &amp; export GEDCOM</h1>
+
+      <Card>
+        <CardHeader>
+          <CardTitle className="text-base">Import a GEDCOM file</CardTitle>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          <label className="flex items-center gap-2 text-sm">
+            <input
+              type="radio"
+              name="target"
+              checked={target === "new"}
+              onChange={() => setTarget("new")}
+            />
+            Import into a <strong>new tree</strong> (recommended)
+          </label>
+          {target === "new" && (
+            <Input
+              className="max-w-xs"
+              placeholder="New tree name"
+              value={newName}
+              onChange={(e) => setNewName(e.target.value)}
+            />
+          )}
+          <label className="flex items-center gap-2 text-sm">
+            <input
+              type="radio"
+              name="target"
+              checked={target === "this"}
+              onChange={() => setTarget("this")}
+            />
+            Import into <strong>this tree</strong> (appends)
+          </label>
+          {target === "this" && (
+            <p className="rounded-md bg-bronze/[0.08] px-3 py-2 text-sm text-[var(--muted)]">
+              Importing appends everyone in the file as new records — it does not merge with
+              people already in this tree, so duplicates are possible.
+            </p>
+          )}
+
+          <input ref={fileRef} type="file" accept=".ged,.gedcom,text/plain" onChange={onFile} className="hidden" />
+          <Button onClick={() => fileRef.current?.click()} disabled={busy}>
+            {busy ? "Importing…" : "Choose GEDCOM file"}
+          </Button>
+
+          {report && (
+            <div className="space-y-3 rounded-lg border border-[var(--border)] p-4">
+              <div className="font-medium">Import complete</div>
+              <div className="flex flex-wrap gap-x-6 gap-y-1 text-sm text-[var(--muted)]">
+                {Object.entries(report.counts).map(([k, v]) => (
+                  <span key={k}>
+                    <span className="font-medium text-[var(--foreground)]">{v}</span> {k}
+                  </span>
+                ))}
+              </div>
+              {report.unmapped_tags.length > 0 && (
+                <div className="text-xs text-[var(--muted)]">
+                  Unmapped tags (skipped): {report.unmapped_tags.join(", ")}
+                </div>
+              )}
+              {importedTreeId && (
+                <Link
+                  href={`/trees/${importedTreeId}`}
+                  className="inline-block text-sm text-bronze hover:underline"
+                >
+                  Open the imported tree →
+                </Link>
+              )}
+            </div>
+          )}
+        </CardContent>
+      </Card>
+
+      <Card>
+        <CardHeader>
+          <CardTitle className="text-base">Export this tree</CardTitle>
+        </CardHeader>
+        <CardContent className="space-y-3">
+          <p className="text-sm text-[var(--muted)]">
+            Download this tree as a GEDCOM file — people, relationships, events, and sources.
+          </p>
+          <Button variant="outline" onClick={exportGed}>
+            Download .ged
+          </Button>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}

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

@@ -36,7 +36,9 @@ export default function FamilyViewPage() {
   const [search, setSearch] = useState("");
   const [firstName, setFirstName] = useState("");
   // Inline add-relative form: which anchor + kind is open, and the typed name.
-  const [adding, setAdding] = useState<{ kind: AddKind; anchor: string } | null>(null);
+  // `key` keeps each empty slot's inline form independent (a person has 2
+  // parents, 4 grandparents — many same-kind/anchor slots can coexist).
+  const [adding, setAdding] = useState<{ key: string; kind: AddKind; anchor: string } | null>(null);
   const [addName, setAddName] = useState("");
 
   const load = useCallback(async () => {
@@ -179,8 +181,18 @@ export default function FamilyViewPage() {
     );
   };
 
-  const AddSlot = ({ kind, anchor, label }: { kind: AddKind; anchor: string; label: string }) =>
-    adding && adding.kind === kind && adding.anchor === anchor ? (
+  const AddSlot = ({
+    formKey,
+    kind,
+    anchor,
+    label,
+  }: {
+    formKey: string;
+    kind: AddKind;
+    anchor: string;
+    label: string;
+  }) =>
+    adding?.key === formKey ? (
       <form onSubmit={submitAdd} className="flex w-44 flex-col gap-1">
         <Input
           autoFocus
@@ -205,7 +217,7 @@ export default function FamilyViewPage() {
     ) : (
       <button
         onClick={() => {
-          setAdding({ kind, anchor });
+          setAdding({ key: formKey, kind, anchor });
           setAddName("");
         }}
         className="w-44 rounded-lg border border-dashed border-[var(--border)] px-3 py-2 text-left text-sm text-[var(--muted)] hover:border-bronze hover:text-bronze"
@@ -214,7 +226,39 @@ export default function FamilyViewPage() {
       </button>
     );
 
-  const parents = parentsOf(focus.id);
+  // Recursive ancestor chart (grows rightward): a node is its box plus a
+  // two-leaf "branch" of its parents, with CSS bracket connectors. Depth 0 =
+  // focus, capped at grandparents (depth 2).
+  const renderNode = (
+    slotPersonId: string | null,
+    childId: string,
+    keyPrefix: string,
+    depth: number,
+  ): React.ReactNode => {
+    const box = slotPersonId ? (
+      <PersonBox id={slotPersonId} muted={depth > 0} />
+    ) : (
+      <AddSlot formKey={keyPrefix} kind="parent" anchor={childId} label="add parent" />
+    );
+    if (!slotPersonId || depth >= 2) {
+      return <div className="ped-person">{box}</div>;
+    }
+    const ps = parentsOf(slotPersonId);
+    return (
+      <div className="ped-person">
+        <div className="ped-self">{box}</div>
+        <div className="ped-branch">
+          <div className="ped-leaf">
+            {renderNode(ps[0] ?? null, slotPersonId, `${keyPrefix}-a`, depth + 1)}
+          </div>
+          <div className="ped-leaf">
+            {renderNode(ps[1] ?? null, slotPersonId, `${keyPrefix}-b`, depth + 1)}
+          </div>
+        </div>
+      </div>
+    );
+  };
+
   const partners = partnersOf(focus.id);
   const children = childrenOf(focus.id);
 
@@ -224,6 +268,7 @@ export default function FamilyViewPage() {
   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
 
   return (
     <div className="space-y-8">
@@ -237,46 +282,10 @@ export default function FamilyViewPage() {
         </Link>
       </div>
 
-      {/* Pedigree: focus → parents → grandparents */}
+      {/* Pedigree: focus → parents → grandparents, with bracket connectors */}
       <Card>
         <CardContent className="overflow-x-auto p-6">
-          <div className="flex min-w-[40rem] items-stretch gap-8">
-            <div className="flex flex-1 flex-col justify-center gap-3">
-              <div className="mb-1 text-xs font-semibold uppercase tracking-wider text-[var(--muted)]">
-                Focus
-              </div>
-              <PersonBox id={focus.id} />
-            </div>
-
-            <div className="flex flex-1 flex-col justify-center gap-4">
-              <div className="mb-1 text-xs font-semibold uppercase tracking-wider text-[var(--muted)]">
-                Parents
-              </div>
-              {parents.map((pid) => (
-                <PersonBox key={pid} id={pid} muted />
-              ))}
-              {parents.length < 2 && <AddSlot kind="parent" anchor={focus.id} label="add parent" />}
-            </div>
-
-            <div className="flex flex-1 flex-col justify-center gap-4">
-              <div className="mb-1 text-xs font-semibold uppercase tracking-wider text-[var(--muted)]">
-                Grandparents
-              </div>
-              {parents.length === 0 && (
-                <div className="text-sm text-[var(--muted)]">Add parents first.</div>
-              )}
-              {parents.map((pid) => (
-                <div key={pid} className="flex flex-col gap-2">
-                  {parentsOf(pid).map((gp) => (
-                    <PersonBox key={gp} id={gp} muted />
-                  ))}
-                  {parentsOf(pid).length < 2 && (
-                    <AddSlot kind="parent" anchor={pid} label="add parent" />
-                  )}
-                </div>
-              ))}
-            </div>
-          </div>
+          <div className="min-w-[44rem]">{renderNode(focus.id, focus.id, "ped", 0)}</div>
         </CardContent>
       </Card>
 
@@ -289,7 +298,12 @@ export default function FamilyViewPage() {
               {partners.map((id) => (
                 <PersonBox key={id} id={id} muted />
               ))}
-              <AddSlot kind="partner" anchor={focus.id} label="add spouse" />
+              <AddSlot
+                formKey={`partner-${focus.id}`}
+                kind="partner"
+                anchor={focus.id}
+                label="add spouse"
+              />
             </div>
           </CardContent>
         </Card>
@@ -301,38 +315,55 @@ export default function FamilyViewPage() {
               {children.map((id) => (
                 <PersonBox key={id} id={id} muted />
               ))}
-              <AddSlot kind="child" anchor={focus.id} label="add child" />
+              <AddSlot
+                formKey={`child-${focus.id}`}
+                kind="child"
+                anchor={focus.id}
+                label="add child"
+              />
             </div>
           </CardContent>
         </Card>
       </div>
 
-      {/* Searchable index of everyone in the tree */}
+      {/* Scrollable, searchable people directory (scales to large trees) */}
       <div className="space-y-3">
-        <div className="flex items-center justify-between gap-3">
-          <h2 className="font-serif text-base font-semibold">All people ({people.length})</h2>
+        <div className="flex flex-wrap items-center justify-between gap-3">
+          <h2 className="font-serif text-base font-semibold">People ({people.length})</h2>
           <Input
-            className="w-56"
-            placeholder="Search…"
+            className="w-64"
+            placeholder="Search by name…"
             value={search}
             onChange={(e) => setSearch(e.target.value)}
           />
         </div>
-        <div className="flex flex-wrap gap-2">
-          {matches.map((p) => (
-            <button
-              key={p.id}
-              onClick={() => setFocusId(p.id)}
-              className={`rounded-full border px-3 py-1 text-sm transition-colors ${
-                p.id === focusId
-                  ? "border-bronze bg-bronze/[0.08] text-bronze"
-                  : "border-[var(--border)] hover:border-bronze/60"
-              }`}
-            >
-              {p.primary_name ?? "Unnamed"}
-            </button>
-          ))}
-        </div>
+        <Card className="overflow-hidden">
+          <div className="max-h-96 overflow-y-auto">
+            {shown.length === 0 ? (
+              <div className="px-4 py-6 text-sm text-[var(--muted)]">No matches.</div>
+            ) : (
+              shown.map((p, i) => (
+                <button
+                  key={p.id}
+                  onClick={() => setFocusId(p.id)}
+                  className={`flex w-full items-center justify-between gap-3 px-4 py-2.5 text-left text-sm transition-colors ${
+                    i > 0 ? "border-t border-[var(--border)]" : ""
+                  } ${p.id === focusId ? "bg-bronze/[0.08]" : "hover:bg-bronze/[0.05]"}`}
+                >
+                  <span className="truncate font-medium">{p.primary_name ?? "Unnamed"}</span>
+                  <span className="shrink-0 text-xs text-[var(--muted)]">
+                    {years.get(p.id) ?? ""}
+                  </span>
+                </button>
+              ))
+            )}
+          </div>
+          {matches.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.
+            </div>
+          )}
+        </Card>
       </div>
     </div>
   );

frontend/app/trees/[id]/tree/chart.css

@@ -0,0 +1,880 @@
+.f3 {
+  --female-color: rgb(196, 138, 146);
+  --male-color: rgb(120, 159, 172);
+  --genderless-color: lightgray;
+  --background-color: rgb(33, 33, 33);
+  --text-color: #fff;
+
+  font-family: 'Roboto', sans-serif;
+}
+
+.f3 * {
+  box-sizing: border-box;
+}
+
+.f3 .cursor-pointer {
+  cursor: pointer;
+}
+.f3 svg.main_svg {
+  width: 100%;
+  height: 100%;
+}
+.f3 svg.main_svg text {
+  fill: currentColor;
+}
+.f3 rect.card-female, .f3 .card-female .card-body-rect, .f3 .card-female .text-overflow-mask {
+  fill: var(--female-color);
+}
+.f3 rect.card-male, .f3 .card-male .card-body-rect, .f3 .card-male .text-overflow-mask {
+  fill: var(--male-color);
+}
+.f3 .card-genderless .card-body-rect, .f3 .card-genderless .text-overflow-mask {
+  fill: var(--genderless-color);
+}
+.f3 .card_add .card-body-rect {
+  fill: #3b5560;
+  stroke-width: 4px;
+  stroke: #fff;
+  cursor: pointer;
+}
+.f3 g.card_add text {
+  fill: #fff;
+}
+.f3 .card-main-outline {
+  stroke: currentColor;
+  stroke-width: 3px;
+}
+.f3 .card_family_tree rect {
+  transition: 0.3s;
+}
+.f3 .card_family_tree:hover rect {
+  transform: scale(1.1);
+}
+.f3 .card_add_relative {
+  cursor: pointer;
+  color: #fff;
+  transition: 0.3s;
+}
+.f3 .card_add_relative circle {
+  fill: rgba(0, 0, 0, 0);
+}
+.f3 .card_add_relative:hover {
+  color: black;
+}
+.f3 .card_edit.pencil_icon {
+  color: #fff;
+  transition: 0.3s;
+}
+.f3 .card_edit.pencil_icon:hover {
+  color: black;
+}
+.f3 .card_break_link, .f3 .link_upper, .f3 .link_lower, .f3 .link_particles {
+  transform-origin: 50% 50%;
+  transition: 1s;
+}
+.f3 .card_break_link {
+  color: #fff;
+}
+.f3 .card_break_link.closed .link_upper {
+  transform: translate(-140.5px, 655.6px);
+}
+.f3 .card_break_link.closed .link_upper g {
+  transform: rotate(-58deg);
+}
+.f3 .card_break_link.closed .link_particles {
+  transform: scale(0);
+}
+.f3 .input-field input {
+  height: 2.5rem !important;
+}
+.f3 .input-field > label:not(.label-icon).active {
+  -webkit-transform: translateY(-8px) scale(0.8);
+  transform: translateY(-8px) scale(0.8);
+}
+.f3.f3-cont {
+  width:100%;
+  height:900px;
+  max-height:70vh;
+  background-color: var(--background-color);
+  color: var(--text-color);
+}
+.f3 {
+  position: relative;
+  display: flex;
+}
+
+
+
+
+/* form-info */
+.f3-form input[type="text"],
+.f3-form textarea,
+.f3-form select {
+  width: 100%;
+  padding: 8px 12px;
+  margin: 8px 0;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  box-sizing: border-box;
+  font-size: 14px;
+  background: var(--background-color);
+  color: currentColor;
+}
+
+.f3-form input[type="text"]:focus,
+.f3-form textarea:focus,
+.f3-form select:focus {
+  box-shadow: 0 0 5px rgba(76, 175, 80, 0.2);
+}
+
+.f3-form button {
+  padding: 10px 20px;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 14px;
+  margin: 10px 0;
+  transition: background-color 0.3s ease-in-out, border-color 0.3s ease-in-out, color 0.3s ease-in-out;
+}
+
+.f3-form button[type="submit"] {
+  background-color: #4CAF50;
+  color: white;
+}
+
+.f3-cancel-btn {
+  background-color: #ccc;
+}
+
+.f3-form .f3-delete-btn {
+  background-color: transparent;
+  border: 1px solid #f44336;
+  color: #f44336;
+  width: 100%;
+  padding: 5px 10px;
+}
+
+.f3-delete-btn:hover {
+  background-color: #da190b;
+  border-color: #da190b;
+  color: #fff;
+}
+
+.f3-delete-btn:disabled {
+  opacity: 0.5;
+  background-color: transparent;
+  color: #f44336;
+  cursor: not-allowed;
+}
+
+.f3-form .f3-remove-relative-btn {
+  background-color: transparent;
+  border: 1px solid currentColor;
+  color: currentColor;
+  width: 100%;
+  padding: 5px 10px;
+}
+
+.f3-remove-relative-btn:hover, .f3-remove-relative-btn.active {
+  background-color: var(--text-color);
+  border-color: var(--text-color);
+  color: var(--background-color);
+}
+
+.f3-radio-group {
+  margin: 15px 0;
+}
+
+.f3-radio-group label {
+  margin-right: 15px;
+  cursor: pointer;
+}
+
+.f3-radio-group input[type="radio"] {
+  margin-right: 5px;
+}
+
+.f3-info-field-label, .f3-form-field label {
+  font-weight: bold;
+  font-size: 12px;
+  display: block;
+  opacity: 0.8;
+}
+
+.f3-info-field-value {
+  font-weight: normal;
+  display: block;
+  border: none;
+  outline: none;
+  border-bottom: 1px solid rgba(255,255,255,0.2);
+  padding-bottom: 1px;
+  margin-bottom: 10px;
+  min-height: 18px;
+}
+
+.f3-form-buttons {
+  text-align: right;
+}
+
+.f3-form-title {
+  text-align: center;
+}
+
+.f3-form.non-editable .f3-form-buttons,
+.f3-form.non-editable .f3-delete-btn,
+.f3-form.non-editable .f3-remove-relative-btn,
+.f3-form.non-editable .f3-link-existing-relative {
+  display: none;
+}
+
+.f3-close-btn {
+  cursor: pointer;
+  position: absolute;
+  left: 10px;
+  top: 8px;
+  font-size: 30px;
+  color: var(--text-color);
+}
+
+.f3-edit-btn {
+  position: relative;
+  top: -1px;
+  width: 24px;
+  height: 24px;
+  cursor: pointer;
+  display: inline-block;
+}
+
+.f3-add-relative-btn {
+  cursor: pointer;
+  width: 27px;
+  height: 27px;
+  margin-right: 5px;
+  display: inline-block;
+}
+
+/* card-html */
+
+.f3 div.card {
+  cursor: pointer;
+  color: var(--text-color);
+  position: relative;
+  line-height: 1.2;
+}
+
+.f3 div.card-image-circle {
+  border-radius: 50%;
+  padding: 5px;
+  width: 90px;
+  height: 90px;
+}
+
+.f3 div.card-image-circle div.card-label {
+  position: absolute;
+  bottom: -10px;
+  left: 50%;
+  transform: translate(-50%, 50%);
+  max-width: 150%;
+  min-height: 22px;
+  text-align: center;
+  background-color: rgba(0, 0, 0, 0.5);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  border-radius: 3px;
+  padding: 0 5px;
+}
+
+.f3 div.card-image-circle img {
+  width: 100%;
+  height: 100%;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.f3 div.card-image-circle svg {
+  width: 100%;
+  height: 100%;
+  padding: 5px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.f3 div.card-image-circle img {
+  width: 100%;
+  height: 100%;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.f3 div.card-rect {
+  padding: 5px;
+  border-radius: 3px;
+  width: 120px;
+  min-height: 70px;
+  overflow: hidden;
+  text-align: center;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+}
+
+
+.f3 div.card-image-rect {
+  width: 200px;
+  min-height: 70px;
+  display: flex;
+  align-items: center;
+  border-radius: 5px;
+}
+
+.f3 div.card-image-rect .person-icon {
+  height: 70px;
+  width: 70px;
+  object-fit: cover;
+  flex: 0 0 auto;
+  padding: 5px;
+  margin-right: 10px;
+}
+
+.f3 div.card-image-rect img {
+  height: 70px;
+  width: 70px;
+  object-fit: cover;
+  flex: 0 0 auto;
+  padding: 5px;
+  margin-right: 10px;
+  border-radius: 8px;
+}
+
+.f3 div.card-image-rect svg {
+  object-fit: cover;
+  width: 100%;
+  height: 100%;
+  padding: 5px;
+  border-radius: 7px;
+}
+
+.f3 div.card-image-rect div.card-label {
+  height: 100%;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+}
+
+.f3 div.mini-tree {
+  text-align: right;
+  position: absolute;
+  top: -15px;
+  right: -2px;
+  z-index: -1;
+}
+.f3 div.mini-tree svg {
+  width: 55px;
+}
+
+.f3 .f3-card-duplicate-tag {
+  position: absolute;
+  top: 2px;
+  right: 2px;
+  color: rgb(255, 251, 220);
+  background-color: rgba(255, 251, 220, 0);
+  border-radius: 50%;
+  padding: 2px;
+  transition: color 0.2s ease-in-out, background-color 0.2s ease-in-out;
+}
+
+.f3 .f3-card-duplicate-hover div.card-inner {
+  transform: translate(0, -2px);
+  outline: 4px solid rgb(255, 251, 220);
+}
+
+.f3 .f3-card-duplicate-hover .f3-card-duplicate-tag {
+  background-color: rgba(255, 251, 220, .8);
+  color: #000;
+}
+
+.f3 .f3-remove-relative-active .card {
+  background-color: var(--background-color);
+}
+
+.f3 .f3-remove-relative-active .card-inner {
+  transition: border 0.2s ease-in-out, opacity 0.2s ease-in-out, transform 0.2s ease-in-out;
+  opacity: .75;
+}
+
+.f3 .f3-remove-relative-active .card:hover .card-inner {
+  opacity: .25;
+}
+
+.f3 .f3-remove-relative-active .card-male.card-depth--1:hover .card-inner {
+  transform: translate(-8px, -8px);
+}
+
+.f3 .f3-remove-relative-active .card.card-female.card-depth--1:hover .card-inner {
+  transform: translate(8px, -8px);
+}
+
+.f3 .f3-remove-relative-active .card.card-female.card-depth-0:hover .card-inner {
+  transform: translate(8px, 0);
+}
+
+.f3 .f3-remove-relative-active .card.card-male.card-depth-0:hover .card-inner {
+  transform: translate(-8px, 0);
+}
+
+.f3 .f3-remove-relative-active .card.card-depth-1:hover .card-inner {
+  transform: translate(0, 8px);
+}
+
+.f3 .f3-remove-relative-active .card.card-main .card-inner {
+  transform: translate(0, 0)!important;
+  opacity: 1!important;
+}
+
+
+
+.f3 div.card > div {
+  transition: transform 0.2s ease-in-out;
+  box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.8);
+}
+
+.f3 .card-inner {
+  outline: 0px solid rgba(255, 255, 255, 1);
+  transition: outline 0.5s ease-in-out;
+}
+
+.f3 div.card-female .card-inner, .f3 div.card-female .person-icon svg {
+  background-color: var(--female-color);
+}
+.f3 div.card-male .card-inner, .f3 div.card-male .person-icon svg {
+  background-color: var(--male-color);
+}
+.f3 div.card-genderless .card-inner, .f3 div.card-genderless .person-icon svg {
+  background-color: var(--genderless-color);
+}
+
+.f3 div.card-new-rel .card-inner, .f3 div.card-new-rel .person-icon svg {
+  background-color: var(--background-color);
+}
+
+.f3 div.card-to-add .card-inner {
+  background-color: var(--background-color);
+  border: 1px solid;
+}
+
+.f3 div.card-to-add .card-inner .card-label {
+  margin: 0 auto;
+}
+
+.f3 div.card-to-add .person-icon {
+  display: none;
+}
+
+.f3 div.card-new-rel .card-inner {
+  border-width: 1px;
+  border-style: dashed;
+  outline: 0px !important;
+}
+.f3 div.card-new-rel.card-female .card-inner, .f3 div.card-to-add.card-female .card-inner {
+  border-color: var(--female-color);
+  color: var(--female-color);
+}
+.f3 div.card-new-rel.card-male .card-inner, .f3 div.card-to-add.card-male .card-inner {
+  color: var(--male-color);
+  border-color: var(--male-color);
+}
+
+.f3 div.card-unknown .card-inner {
+  background-color: var(--background-color);
+  border: 1px solid;
+}
+
+.f3 div.card-unknown .card-inner .card-label {
+  margin: 0 auto;
+}
+
+.f3 div.card-unknown .person-icon {
+  display: none;
+}
+
+.f3 div.card-new-rel .card-inner {
+  border-width: 1px;
+  border-style: dashed;
+  outline: 0px !important;
+}
+.f3 div.card-new-rel.card-female .card-inner, .f3 div.card-unknown.card-female .card-inner {
+  border-color: var(--female-color);
+  color: var(--female-color);
+}
+.f3 div.card-new-rel.card-male .card-inner, .f3 div.card-unknown.card-male .card-inner {
+  color: var(--male-color);
+  border-color: var(--male-color);
+}
+
+.f3 div.card:hover > div {
+  transform: translate(0, -2px);
+}
+.f3 div.card-main .card-inner, .f3 div.card:hover .card-inner {
+  box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.8);
+}
+
+.f3 div.card-main .card-inner {
+  outline: 4px solid rgba(220, 220, 220, 1);
+}
+
+.f3 div.card-inner.f3-path-to-main {
+  outline: 4px solid rgba(255, 255, 255, 1);
+}
+
+.f3 .link {
+  transition: stroke-width 0.2s ease-in-out;
+}
+
+.f3 .link.f3-path-to-main {
+  stroke-width: 4px;
+}
+
+
+
+
+
+.f3-form-cont {
+  position: relative;
+  z-index: 6;
+  right: 0;
+  top: 0;
+  width: 0;
+  height: 100%;
+  background-color: var(--background-color);
+  overflow: auto;
+  flex: 0 0 auto;
+  box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.5);
+}
+
+.f3-form-cont.opened {
+  width: 350px;
+}
+
+.f3-form {
+  padding: 20px;
+}
+
+.f3-form hr {
+  border-style: solid; 
+  border-width: thin 0 0 0;
+  opacity: 0.15;
+}
+
+.f3-nav-cont {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  display: flex;
+}
+
+.f3-history-controls {
+  padding: 8px 5px 7px 9px;
+  display: inline-block;
+  position: relative;
+  z-index: 2;
+}
+
+.f3-back-button, .f3-forward-button {
+  width: 30px;
+  height: 30px;
+  transition: opacity 0.3s ease;
+  cursor: pointer;
+  display: inline-block;
+  background-color: transparent;
+  border: none;
+  margin-right: 10px;
+  color: currentColor;
+}
+
+.f3-history-controls svg {
+  height: 100%;
+}
+
+.f3-back-button.disabled, .f3-forward-button.disabled {
+  opacity: 0.5;
+}
+
+.f3-modal {
+  display: none;
+  position: absolute;
+  z-index: 10;
+  left: 0;
+  top: 0;
+  width: 100%;
+  height: 100%;
+  overflow: auto;
+  background-color: rgb(0,0,0);
+  background-color: rgba(0,0,0,0.4);
+}
+
+.f3-modal-content {
+  position: relative;
+  background-color: var(--background-color);
+  margin: 15% auto;
+  padding: 20px;
+  border: 1px solid #888;
+  border-radius: 5px;
+  width: 500px;
+  max-width: 90%;
+}
+
+.f3-modal-close {
+  color: #aaa;
+  position: absolute;
+  right: 10px;
+  top: 7px;
+  font-size: 28px;
+  font-weight: bold;
+}
+
+.f3-modal-close:hover,
+.f3-modal-close:focus {
+  color: black;
+  text-decoration: none;
+  cursor: pointer;
+} 
+
+.f3-popup {
+  position: fixed;
+  box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.8);
+}
+
+.f3-popup-content {
+  position: relative;
+  background-color: var(--background-color);
+  border: 1px solid #888;
+  border-radius: 5px;
+  overflow: hidden;
+  width: 100%;
+  height: 100%;
+}
+
+.f3-popup-nav {
+  height: 20px;
+}
+
+.f3-popup-content-inner {
+  width: 100%;
+  height: 100%;
+}
+
+.f3-popup-close {
+  color: #aaa;
+  position: absolute;
+  z-index: 4;
+  right: 6px;
+  top: 1px;
+  font-size: 28px;
+  font-weight: bold;
+  line-height: 1;
+}
+
+.f3-popup-close:hover,
+.f3-popup-close:focus {
+  color: black;
+  text-decoration: none;
+  cursor: pointer;
+} 
+
+
+
+.f3-btn {
+  position: relative;
+  cursor: pointer;
+  padding: 5px 10px;
+
+  overflow: hidden;
+
+  border-width: 0;
+  outline: none;
+  border-radius: 3px;
+  box-shadow: 0 1px 4px rgba(0, 0, 0, .6);
+  
+  background-color: var(--text-color);
+  color: var(--background-color);
+  
+  transition: background-color .3s;
+  font-size: 14px;
+}
+
+.f3-btn:hover, .f3-btn:focus {
+  background-color: var(--background-color);
+  color: var(--text-color);
+}
+
+.f3-female-bg {
+  background-color: var(--female-color);
+}
+
+.f3-male-bg {
+  background-color: var(--male-color);
+}
+
+.f3-genderless-bg {
+  background-color: var(--genderless-color);
+}
+
+.f3-female-color {
+  color: var(--female-color);
+}
+
+.f3-male-color {
+  color: var(--male-color);
+}
+
+.f3-genderless-color {
+  color: var(--genderless-color);
+}
+
+.f3-autocomplete-cont {
+  position: relative;
+  display: inline-block;
+  z-index: 2;
+  font-size: 14px;
+  width: 200px;
+}
+
+.f3-autocomplete input {
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  background-color: var(--background-color);
+  color: var(--text-color);
+  padding: 10px;
+  width: 100%;
+}
+.f3-autocomplete input:focus {
+  outline: none;
+}
+
+.f3-autocomplete-toggle {
+  position: absolute;
+  right: 10px;
+  top: 10px;
+  cursor: pointer;
+  color: var(--text-color);
+  transition: color 0.3s ease-in-out;
+  width: 20px;
+}
+
+.f3-autocomplete-items {
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  border-top: none;
+  overflow-y: auto;
+  max-height: 0;
+  background-color: var(--background-color);
+  transition: max-height 0.3s ease-in-out;
+}
+
+.f3-autocomplete.active .f3-autocomplete-items {
+  max-height: 300px;
+}
+
+.f3-autocomplete-item > div {
+  padding: 10px;
+  cursor: pointer;
+  background-color: var(--background-color);
+  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
+  transition: background-color 0.3s ease-in-out, color 0.3s ease-in-out;
+}
+.f3-autocomplete-item > div:hover, .f3-autocomplete-item.f3-selected > div {
+  background-color: var(--text-color);
+  color: var(--background-color);
+}
+
+.f3-autocomplete-active {
+  background-color: DodgerBlue !important;
+  color: #ffffff;
+}
+
+.f3-kinship-info {
+  padding: 10px 20px;
+}
+
+.f3-kinship-info .f3-info-field {
+  color:#b3b01e
+}
+
+.f3-kinship-info-icon {
+  cursor:pointer;
+  display:inline-block;
+  width:18px;
+  height:18px;
+  color:#04a4f4;
+  position:relative;
+  top:4px;
+  left:2px;
+}
+
+.f3-kinship-info .f3 {
+  width:100%;
+  height: 100%;
+  position:relative;
+  background-color:rgb(33,33,33);
+  color:#fff;
+}
+
+.f3 .f3-kinship-info .card-kinship-self {
+  min-height: 0px;
+  width: 60px;
+  height: 60px;
+  border-radius: 50%;
+  background-color: var(--background-color) !important;
+  border: solid 3px;
+  color: #437fae;
+  font-weight: bold;
+}
+
+.f3 .f3-kinship-info .card-kinship-self.f3-real-label {
+  width: 150px;
+  height: 50px;
+  border-radius: 50px;
+}
+
+.f3 .f3-kinship-info .card-kinship-rel {
+  min-height: 0px;
+  width: 150px;
+  height: 50px;
+  border-radius: 50px;
+  background-color: #1d3456 !important;
+  font-weight: bold;
+}
+
+.f3 .f3-kinship-info .card-kinship-default {
+  min-height: 0px;
+  width: 150px;
+  height: 50px;
+  border-radius: 50px;
+  background-color: var(--background-color) !important;
+  border: solid 1px;
+}
+
+.f3-kinship-labels-toggle {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: 10;
+  font-size: 12px;
+}
+
+.f3-kinship-labels-toggle label {
+  cursor: pointer;
+  color: #fff;
+  font-weight: bold;
+  text-align: center;
+  padding: 2px 5px;
+}
+
+.f3-kinship-labels-toggle input[type="checkbox"] {
+  cursor: pointer;
+  margin-left: 5px;
+  margin-right: 5px;
+  margin-top: 5px;
+  margin-bottom: 5px;
+}

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

@@ -0,0 +1,127 @@
+"use client";
+
+// Vendored from family-chart/dist/styles (the package blocks the CSS subpath export).
+import "./chart.css";
+
+import { useParams, useRouter } from "next/navigation";
+import { useEffect, useRef, useState } from "react";
+
+import { api } from "@/lib/api/client";
+import type { components } from "@/lib/api/schema";
+
+type Relationship = components["schemas"]["RelationshipRead"];
+type Event = components["schemas"]["EventRead"];
+
+function splitName(name: string | null | undefined): [string, string] {
+  const t = (name ?? "").trim().split(/\s+/).filter(Boolean);
+  if (t.length <= 1) return [name ?? "", ""];
+  return [t.slice(0, -1).join(" "), t[t.length - 1]];
+}
+
+export default function TreePage() {
+  const router = useRouter();
+  const params = useParams<{ id: string }>();
+  const treeId = params.id;
+  const containerRef = useRef<HTMLDivElement>(null);
+  const [status, setStatus] = useState<"loading" | "empty" | "ready" | "error">("loading");
+
+  useEffect(() => {
+    let cancelled = false;
+
+    (async () => {
+      const p = await api.GET("/api/v1/trees/{tree_id}/persons", {
+        params: { path: { tree_id: treeId } },
+      });
+      if (p.response.status === 401) {
+        router.push("/login");
+        return;
+      }
+      const [r, e] = await Promise.all([
+        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);
+        }
+      }
+
+      const data = people.map((pp) => {
+        const [fn, ln] = splitName(pp.primary_name);
+        return {
+          id: pp.id,
+          data: {
+            "first name": fn || "Unnamed",
+            "last name": ln,
+            birthday: birthYear.get(pp.id) ?? "",
+            gender: pp.gender === "female" ? "F" : "M",
+          },
+          rels: {
+            spouses: partnersOf(pp.id),
+            parents: parentsOf(pp.id),
+            children: childrenOf(pp.id),
+          },
+        };
+      });
+
+      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");
+    });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [router, treeId]);
+
+  return (
+    <div className="space-y-4">
+      <div className="flex flex-wrap items-center justify-between gap-2">
+        <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>
+      {status === "empty" && (
+        <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)" }}
+      />
+    </div>
+  );
+}

frontend/app/trees/page.tsx

@@ -77,7 +77,7 @@ export default function TreesPage() {
             <li key={tree.id}>
               <Card className="transition-colors hover:border-bronze/50">
                 <CardContent className="flex items-center justify-between p-4">
-                  <Link href={`/trees/${tree.id}`} className="min-w-0 flex-1">
+                  <Link href={`/trees/${tree.id}/tree`} className="min-w-0 flex-1">
                     <div className="truncate font-medium">{tree.name}</div>
                     <div className="text-xs uppercase tracking-wide text-bronze">
                       {tree.visibility}

frontend/components/app-sidebar.tsx

@@ -1,6 +1,15 @@
 "use client";
 
-import { Archive, BookText, FolderTree, Image as ImageIcon, LogOut, Users } from "lucide-react";
+import {
+  Archive,
+  ArrowDownUp,
+  BookText,
+  FolderTree,
+  Image as ImageIcon,
+  LogOut,
+  Network,
+  Users,
+} from "lucide-react";
 import Link from "next/link";
 import { usePathname, useRouter } from "next/navigation";
 import { useEffect, useState } from "react";
@@ -69,6 +78,12 @@ export function AppSidebar() {
           <div className="truncate px-3 pb-1 text-xs font-semibold uppercase tracking-wider text-[var(--muted)]">
             {treeName ?? "Tree"}
           </div>
+          <Item
+            href={`/trees/${treeId}/tree`}
+            label="Tree"
+            icon={Network}
+            active={pathname.startsWith(`/trees/${treeId}/tree`)}
+          />
           <Item
             href={`/trees/${treeId}`}
             label="People"
@@ -87,6 +102,12 @@ export function AppSidebar() {
             icon={ImageIcon}
             active={pathname.startsWith(`/trees/${treeId}/media`)}
           />
+          <Item
+            href={`/trees/${treeId}/gedcom`}
+            label="Import / Export"
+            icon={ArrowDownUp}
+            active={pathname.startsWith(`/trees/${treeId}/gedcom`)}
+          />
           <Item
             href={`/trees/${treeId}/recovery`}
             label="Recovery"

frontend/lib/api/schema.d.ts

@@ -490,10 +490,49 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/v1/trees/{tree_id}/gedcom/import": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Import Gedcom */
+        post: operations["import_gedcom_api_v1_trees__tree_id__gedcom_import_post"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/v1/trees/{tree_id}/gedcom/export": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /** Export Gedcom */
+        get: operations["export_gedcom_api_v1_trees__tree_id__gedcom_export_get"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
 }
 export type webhooks = Record<string, never>;
 export interface components {
     schemas: {
+        /** Body_import_gedcom_api_v1_trees__tree_id__gedcom_import_post */
+        Body_import_gedcom_api_v1_trees__tree_id__gedcom_import_post: {
+            /** File */
+            file: string;
+        };
         /** Body_upload_media_api_v1_trees__tree_id__media_post */
         Body_upload_media_api_v1_trees__tree_id__media_post: {
             /** File */
@@ -642,6 +681,15 @@ export interface components {
             /** Detail */
             detail?: components["schemas"]["ValidationError"][];
         };
+        /** ImportReport */
+        ImportReport: {
+            /** Counts */
+            counts: {
+                [key: string]: number;
+            };
+            /** Unmapped Tags */
+            unmapped_tags: string[];
+        };
         /** LoginRequest */
         LoginRequest: {
             /** Email */
@@ -2130,4 +2178,70 @@ export interface operations {
             };
         };
     };
+    import_gedcom_api_v1_trees__tree_id__gedcom_import_post: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                tree_id: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "multipart/form-data": components["schemas"]["Body_import_gedcom_api_v1_trees__tree_id__gedcom_import_post"];
+            };
+        };
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["ImportReport"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
+    export_gedcom_api_v1_trees__tree_id__gedcom_export_get: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                tree_id: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": unknown;
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
 }

frontend/openapi.json

@@ -1679,10 +1679,118 @@
           }
         }
       }
+    },
+    "/api/v1/trees/{tree_id}/gedcom/import": {
+      "post": {
+        "tags": [
+          "gedcom"
+        ],
+        "summary": "Import Gedcom",
+        "operationId": "import_gedcom_api_v1_trees__tree_id__gedcom_import_post",
+        "parameters": [
+          {
+            "name": "tree_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Tree Id"
+            }
+          }
+        ],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "multipart/form-data": {
+              "schema": {
+                "$ref": "#/components/schemas/Body_import_gedcom_api_v1_trees__tree_id__gedcom_import_post"
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ImportReport"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/HTTPValidationError"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/v1/trees/{tree_id}/gedcom/export": {
+      "get": {
+        "tags": [
+          "gedcom"
+        ],
+        "summary": "Export Gedcom",
+        "operationId": "export_gedcom_api_v1_trees__tree_id__gedcom_export_get",
+        "parameters": [
+          {
+            "name": "tree_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid",
+              "title": "Tree Id"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {}
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/HTTPValidationError"
+                }
+              }
+            }
+          }
+        }
+      }
     }
   },
   "components": {
     "schemas": {
+      "Body_import_gedcom_api_v1_trees__tree_id__gedcom_import_post": {
+        "properties": {
+          "file": {
+            "type": "string",
+            "contentMediaType": "application/octet-stream",
+            "title": "File"
+          }
+        },
+        "type": "object",
+        "required": [
+          "file"
+        ],
+        "title": "Body_import_gedcom_api_v1_trees__tree_id__gedcom_import_post"
+      },
       "Body_upload_media_api_v1_trees__tree_id__media_post": {
         "properties": {
           "file": {
@@ -2250,6 +2358,30 @@
         "type": "object",
         "title": "HTTPValidationError"
       },
+      "ImportReport": {
+        "properties": {
+          "counts": {
+            "additionalProperties": {
+              "type": "integer"
+            },
+            "type": "object",
+            "title": "Counts"
+          },
+          "unmapped_tags": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array",
+            "title": "Unmapped Tags"
+          }
+        },
+        "type": "object",
+        "required": [
+          "counts",
+          "unmapped_tags"
+        ],
+        "title": "ImportReport"
+      },
       "LoginRequest": {
         "properties": {
           "email": {

frontend/package-lock.json

@@ -10,6 +10,7 @@
       "dependencies": {
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
+        "family-chart": "^0.9.0",
         "lucide-react": "^0.469.0",
         "next": "^15.1.0",
         "openapi-fetch": "^0.13.0",
@@ -1111,12 +1112,390 @@
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       "dev": true
     },
+    "node_modules/commander": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-7.2.0.tgz",
+      "integrity": "sha512-QrWXB+ZQSVPmIWIhtEO9H+gwHaMGYiF5ChvoJ+K9ZGHG/sVsa6yiesAD1GC/x46sET00Xlwo1u49RVVVzvcSkw==",
+      "engines": {
+        "node": ">= 10"
+      }
+    },
     "node_modules/csstype": {
       "version": "3.2.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
       "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
       "dev": true
     },
+    "node_modules/d3": {
+      "version": "7.9.0",
+      "resolved": "https://registry.npmjs.org/d3/-/d3-7.9.0.tgz",
+      "integrity": "sha512-e1U46jVP+w7Iut8Jt8ri1YsPOvFpg46k+K8TpCb0P+zjCkjkPnV7WzfDJzMHy1LnA+wj5pLT1wjO901gLXeEhA==",
+      "dependencies": {
+        "d3-array": "3",
+        "d3-axis": "3",
+        "d3-brush": "3",
+        "d3-chord": "3",
+        "d3-color": "3",
+        "d3-contour": "4",
+        "d3-delaunay": "6",
+        "d3-dispatch": "3",
+        "d3-drag": "3",
+        "d3-dsv": "3",
+        "d3-ease": "3",
+        "d3-fetch": "3",
+        "d3-force": "3",
+        "d3-format": "3",
+        "d3-geo": "3",
+        "d3-hierarchy": "3",
+        "d3-interpolate": "3",
+        "d3-path": "3",
+        "d3-polygon": "3",
+        "d3-quadtree": "3",
+        "d3-random": "3",
+        "d3-scale": "4",
+        "d3-scale-chromatic": "3",
+        "d3-selection": "3",
+        "d3-shape": "3",
+        "d3-time": "3",
+        "d3-time-format": "4",
+        "d3-timer": "3",
+        "d3-transition": "3",
+        "d3-zoom": "3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-array": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-3.2.4.tgz",
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+        "internmap": "1 - 2"
+      },
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+    "node_modules/d3-axis": {
+      "version": "3.0.0",
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+      "resolved": "https://registry.npmjs.org/d3-brush/-/d3-brush-3.0.0.tgz",
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+        "d3-selection": "3"
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+      "dependencies": {
+        "d3-color": "1 - 3",
+        "d3-interpolate": "1 - 3"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/d3-selection": {
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+      "resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
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+      "engines": {
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+    "node_modules/d3-shape": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/d3-shape/-/d3-shape-3.2.0.tgz",
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+      "dependencies": {
+        "d3-path": "^3.1.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-time": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/d3-time/-/d3-time-3.1.0.tgz",
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+      "dependencies": {
+        "d3-array": "2 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-time-format": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/d3-time-format/-/d3-time-format-4.1.0.tgz",
+      "integrity": "sha512-dJxPBlzC7NugB2PDLwo9Q8JiTR3M3e4/XANkreKSUxF8vvXKqm1Yfq4Q5dl8budlunRVlUUaDUgFt7eA8D6NLg==",
+      "dependencies": {
+        "d3-time": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-timer": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-timer/-/d3-timer-3.0.1.tgz",
+      "integrity": "sha512-ndfJ/JxxMd3nw31uyKoY2naivF+r29V+Lc0svZxe1JvvIRmi8hUsrMvdOwgS1o6uBHmiz91geQ0ylPP0aj1VUA==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-transition": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-3.0.1.tgz",
+      "integrity": "sha512-ApKvfjsSR6tg06xrL434C0WydLr7JewBB3V+/39RMHsaXTOG0zmt/OAXeng5M5LBm0ojmxJrpomQVZ1aPvBL4w==",
+      "dependencies": {
+        "d3-color": "1 - 3",
+        "d3-dispatch": "1 - 3",
+        "d3-ease": "1 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-timer": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "peerDependencies": {
+        "d3-selection": "2 - 3"
+      }
+    },
+    "node_modules/d3-zoom": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-3.0.0.tgz",
+      "integrity": "sha512-b8AmV3kfQaqWAuacbPuNbL6vahnOJflOhexLzMMNLga62+/nh0JzvJ0aO/5a5MVgUFGS7Hu1P9P03o3fJkDCyw==",
+      "dependencies": {
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "2 - 3",
+        "d3-transition": "2 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -1134,6 +1513,14 @@
         }
       }
     },
+    "node_modules/delaunator": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/delaunator/-/delaunator-5.1.0.tgz",
+      "integrity": "sha512-AGrQ4QSgssa1NGmWmLPqN5NY2KajF5MqxetNEO+o0n3ZwZZeTmt7bBnvzHWrmkZFxGgr4HdyFgelzgi06otLuQ==",
+      "dependencies": {
+        "robust-predicates": "^3.0.2"
+      }
+    },
     "node_modules/detect-libc": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.1.2.tgz",
@@ -1156,6 +1543,14 @@
         "node": ">=10.13.0"
       }
     },
+    "node_modules/family-chart": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/family-chart/-/family-chart-0.9.0.tgz",
+      "integrity": "sha512-+JdLr1Oo+YFnQWUXgdnk4nCMTbe1MXKdpbx3KEBXPeq2oX+2v5ccmrcK39CZ761/zQfgSHFZ2cT/+gbaeeACcA==",
+      "dependencies": {
+        "d3": "^7.9.0"
+      }
+    },
     "node_modules/fast-deep-equal": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -1181,6 +1576,17 @@
         "node": ">= 14"
       }
     },
+    "node_modules/iconv-lite": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+      "dependencies": {
+        "safer-buffer": ">= 2.1.2 < 3.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/index-to-position": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/index-to-position/-/index-to-position-1.2.0.tgz",
@@ -1193,6 +1599,14 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/jiti": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/jiti/-/jiti-2.7.0.tgz",
@@ -1734,6 +2148,21 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/robust-predicates": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.3.tgz",
+      "integrity": "sha512-NS3levdsRIUOmiJ8FZWCP7LG3QpJyrs/TE0Zpf1yvZu8cAJJ6QMW92H1c7kWpdIHo8RvmLxN/o2JXTKHp74lUA=="
+    },
+    "node_modules/rw": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz",
+      "integrity": "sha512-PdhdWy89SiZogBLaw42zdeqtRJ//zFd2PgQavcICDUgJT5oW10QCRKbJ6bg4r0/UY2M6BWd5tkxuGFRvCkgfHQ=="
+    },
+    "node_modules/safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    },
     "node_modules/scheduler": {
       "version": "0.27.0",
       "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.27.0.tgz",

frontend/package.json

@@ -10,23 +10,24 @@
     "gen:api": "openapi-typescript ./openapi.json -o ./lib/api/schema.d.ts --default-non-nullable false"
   },
   "dependencies": {
-    "next": "^15.1.0",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0",
-    "openapi-fetch": "^0.13.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "tailwind-merge": "^2.6.0",
-    "lucide-react": "^0.469.0"
+    "family-chart": "^0.9.0",
+    "lucide-react": "^0.469.0",
+    "next": "^15.1.0",
+    "openapi-fetch": "^0.13.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
+    "tailwind-merge": "^2.6.0"
   },
   "devDependencies": {
-    "typescript": "^5.7.0",
+    "@tailwindcss/postcss": "^4.0.0",
     "@types/node": "^22.10.0",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
-    "tailwindcss": "^4.0.0",
-    "@tailwindcss/postcss": "^4.0.0",
+    "openapi-typescript": "^7.5.0",
     "postcss": "^8.4.49",
-    "openapi-typescript": "^7.5.0"
+    "tailwindcss": "^4.0.0",
+    "typescript": "^5.7.0"
   }
 }

frontend/types/family-chart.d.ts

@@ -0,0 +1,2 @@
+declare module "family-chart";
+declare module "family-chart/dist/styles/family-chart.css";