diff --git a/src/components/ArrowLink.tsx b/src/components/ArrowLink.tsx
index b2f9af0..056fd49 100644
--- a/src/components/ArrowLink.tsx
+++ b/src/components/ArrowLink.tsx
@@ -4,7 +4,15 @@ import { Link } from "react-router-dom";
    ARROW LINK
    ═══════════════════════════════════════════════════════════════ */
 
-export default function ArrowLink({ to, label, color, size = "h-9 w-9" }) {
+type ArrowLinkProps = {
+  to: string;
+  label: string;
+  color: string;
+  /** Tailwind size classes for the circle. */
+  size?: string;
+};
+
+export default function ArrowLink({ to, label, color, size = "h-9 w-9" }: ArrowLinkProps) {
   return (
     <Link
       to={to}
diff --git a/src/components/Layout.tsx b/src/components/Layout.tsx
index 2073f0a..5474c73 100644
--- a/src/components/Layout.tsx
+++ b/src/components/Layout.tsx
@@ -117,7 +117,7 @@ export default function Layout() {
 
     const targets = sections
       .map((s) => document.querySelector(s.hash))
-      .filter(Boolean);
+      .filter((el): el is Element => el !== null);
     if (targets.length === 0) return;
 
     const observer = new IntersectionObserver(
diff --git a/src/components/PageShell.tsx b/src/components/PageShell.tsx
index 63ce434..496f926 100644
--- a/src/components/PageShell.tsx
+++ b/src/components/PageShell.tsx
@@ -29,9 +29,27 @@
      />
    ═══════════════════════════════════════════════════════════════ */
 
+import type { ReactNode } from "react";
+
 const TEAL = "#138ba0";
 
-export function Section({ section }) {
+export type ShellSection = {
+  id: string;
+  title: string;
+  blurb?: string;
+  accent: string;
+  background: string;
+  actions?: ReactNode;
+  content: ReactNode;
+};
+
+type PageShellProps = {
+  title: ReactNode;
+  intro?: ReactNode;
+  sections: ShellSection[];
+};
+
+export function Section({ section }: { section: ShellSection }) {
   const {
     id,
     title,
@@ -70,7 +88,7 @@ export function Section({ section }) {
   );
 }
 
-export default function PageShell({ title, intro, sections }) {
+export default function PageShell({ title, intro, sections }: PageShellProps) {
   return (
     <>
       {/* Page header */}
diff --git a/src/components/PeopleTiles.tsx b/src/components/PeopleTiles.tsx
index 61fd716..bd738a9 100644
--- a/src/components/PeopleTiles.tsx
+++ b/src/components/PeopleTiles.tsx
@@ -164,7 +164,7 @@ export default function PeopleTiles({
 
     Promise.all(
       specs.map((spec) =>
-        get(`/teams/${spec.id}/people`, { ttl }).then((data: TeamResponse) => ({
+        get<TeamResponse>(`/teams/${spec.id}/people`, { ttl }).then((data) => ({
           spec,
           data,
         })),
@@ -198,8 +198,8 @@ export default function PeopleTiles({
     let live = true;
     setFailed(false);
 
-    get(`/people?ids=${encodeURIComponent(slugKey)}`, { ttl })
-      .then((data: { people: Person[] }) => {
+    get<{ people: Person[] }>(`/people?ids=${encodeURIComponent(slugKey)}`, { ttl })
+      .then((data) => {
         if (!live) return;
         const byId: Record<string, Person> = {};
         for (const person of data.people) byId[String(person.id)] = person;
@@ -304,11 +304,10 @@ function resolveAll(
     }
 
     const { peopleslug, ...overrides } = entry;
-    const merged: Person = { ...base };
-    for (const [key, value] of Object.entries(overrides)) {
-      if (value !== undefined) (merged as Record<string, unknown>)[key] = value;
-    }
-    resolved.push(merged);
+    const defined: Partial<Person> = Object.fromEntries(
+      Object.entries(overrides).filter(([, value]) => value !== undefined),
+    );
+    resolved.push({ ...base, ...defined });
   }
 
   return resolved;
diff --git a/src/components/admin/fields.tsx b/src/components/admin/fields.tsx
index 95296f8..c56f092 100644
--- a/src/components/admin/fields.tsx
+++ b/src/components/admin/fields.tsx
@@ -32,7 +32,16 @@
                 able to read and copy.
    ═══════════════════════════════════════════════════════════════ */
 
-import { useRef, useState } from "react";
+import { useRef, useState, type ChangeEvent, type ReactNode } from "react";
+
+import type { FieldErrors } from "../../lib/api.js";
+import type {
+  AdminFieldSpec,
+  AdminOption,
+  AdminOptions,
+  AdminRow,
+  CollectionSpec,
+} from "../../lib/adminSchema.js";
 
 const input =
   "w-full rounded-lg border border-[#4a6b72]/25 bg-white px-3 py-2 text-sm text-[#26454c] " +
@@ -56,37 +65,56 @@ const inputLocked =
 
 /* ── Dotted paths ────────────────────────────────────────────── */
 
-export function getPath(object, path) {
+export function getPath(object: unknown, path: string | null | undefined): unknown {
   // An entity with no slug has no heading path either, and a missing
   // path should read as "no value" rather than throwing on .split.
   if (!path) return undefined;
-  return path.split(".").reduce((value, key) => value?.[key], object);
+  return path
+    .split(".")
+    .reduce<unknown>((value, key) => (value == null ? undefined : (value as AdminRow)[key]), object);
 }
 
-export function setPath(object, path, value) {
+export function setPath(object: AdminRow | null | undefined, path: string, value: unknown): AdminRow {
   const [head, ...rest] = path.split(".");
   if (rest.length === 0) return { ...object, [head]: value };
-  return { ...object, [head]: setPath(object?.[head] ?? {}, rest.join("."), value) };
+  const inner = (object?.[head] ?? {}) as AdminRow;
+  return { ...object, [head]: setPath(inner, rest.join("."), value) };
 }
 
 /* ── Field ───────────────────────────────────────────────────── */
 
-export function Field({ field, value, row, options, error, onChange }) {
+/* [value, label, the option row it came from]. Manifest options
+   have no row, which is what filterBy's `!raw` lets through. */
+type Choice = [id: string, label: string, raw?: AdminOption];
+
+type FieldProps = {
+  field: AdminFieldSpec;
+  /* Whatever the row holds at field.path; shown as text. */
+  value: unknown;
+  row?: AdminRow;
+  options?: AdminOptions | null;
+  error?: string;
+  onChange: (value: string | number) => void;
+};
+
+export function Field({ field, value, row, options, error, onChange }: FieldProps) {
   const id = `f-${field.path.replace(/\./g, "-")}`;
   const widget = field.widget ?? "text";
   const locked = Boolean(field.readOnly);
+  const text = value == null ? "" : String(value);
 
-  let list = null;
+  let list: Choice[] = [];
   let orphaned = false;
 
   if (widget === "select") {
     list = field.optionsFrom
-      ? (options?.[field.optionsFrom] ?? []).map((o) => [o.id, o.label, o])
-      : (field.options ?? []).map((o) =>
-          Array.isArray(o) ? [o[0], o[1]] : [o, o],
+      ? (options?.[field.optionsFrom] ?? []).map((o): Choice => [o.id, o.label, o])
+      : (field.options ?? []).map((o): Choice =>
+          typeof o === "string" ? [o, o] : [o[0], o[1]],
         );
-    if (field.filterBy && row) {
-      list = list.filter(([, , raw]) => !raw || field.filterBy(raw, row));
+    const { filterBy } = field;
+    if (filterBy && row) {
+      list = list.filter(([, , raw]) => !raw || filterBy(raw, row));
     }
 
     // A stored value with no matching option renders as the blank
@@ -102,8 +130,9 @@ export function Field({ field, value, row, options, error, onChange }) {
   const common = {
     id,
     className: `${input} ${error ? inputError : ""}`,
-    value: value ?? "",
-    onChange: (e) => onChange(e.target.value),
+    value: text,
+    onChange: (e: ChangeEvent<HTMLInputElement | HTMLTextAreaElement | HTMLSelectElement>) =>
+      onChange(e.target.value),
   };
 
   return (
@@ -145,7 +174,7 @@ export function Field({ field, value, row, options, error, onChange }) {
             }`}
           >
             <option value="">{field.blankLabel ?? "— choose —"}</option>
-            {orphaned && <option value={value}>{value} — no longer exists</option>}
+            {orphaned && <option value={text}>{text} — no longer exists</option>}
             {list.map(([id2, label]) => (
               <option key={id2} value={id2}>
                 {label}
@@ -156,7 +185,7 @@ export function Field({ field, value, row, options, error, onChange }) {
           <div className="flex gap-2">
             <input
               type="color"
-              value={/^#[0-9a-f]{6}$/i.test(value ?? "") ? value : "#138ba0"}
+              value={/^#[0-9a-f]{6}$/i.test(text) ? text : "#138ba0"}
               disabled={locked}
               onChange={(e) => onChange(e.target.value)}
               className="h-9 w-12 shrink-0 rounded border border-[#4a6b72]/25 bg-white disabled:opacity-50"
@@ -188,7 +217,7 @@ export function Field({ field, value, row, options, error, onChange }) {
             <input
               id={id}
               type="text"
-              value={value ?? ""}
+              value={text}
               onChange={(e) => onChange(e.target.value)}
               placeholder={field.placeholder}
               className="w-full border-0 bg-transparent p-0 text-[#26454c] outline-none placeholder:text-[#4a6b72]/45"
@@ -222,26 +251,36 @@ export function Field({ field, value, row, options, error, onChange }) {
   );
 }
 
-export function FieldGrid({ children }) {
+export function FieldGrid({ children }: { children: ReactNode }) {
   return <div className="grid gap-4 sm:grid-cols-2">{children}</div>;
 }
 
 /* ── Repeater ────────────────────────────────────────────────── */
 
-export function Repeater({ spec, rows, options, errors, errorPrefix, onChange }) {
+type RepeaterProps = {
+  spec: CollectionSpec;
+  rows: AdminRow[] | null | undefined;
+  options?: AdminOptions | null;
+  errors?: Partial<FieldErrors> | null;
+  /** Where this collection's rows sit in the server's error keys. */
+  errorPrefix: string;
+  onChange: (rows: AdminRow[]) => void;
+};
+
+export function Repeater({ spec, rows, options, errors, errorPrefix, onChange }: RepeaterProps) {
   const list = rows ?? [];
 
   // Which row is in flight, and which one it's currently over.
   // Both are per-Repeater, which is what keeps a drag inside a
   // nested collection from being accepted by the outer one.
-  const [dragIndex, setDragIndex] = useState(null);
-  const [overIndex, setOverIndex] = useState(null);
-  const rowRefs = useRef([]);
+  const [dragIndex, setDragIndex] = useState<number | null>(null);
+  const [overIndex, setOverIndex] = useState<number | null>(null);
+  const rowRefs = useRef<Array<HTMLDivElement | null>>([]);
 
-  const update = (index, next) =>
+  const update = (index: number, next: AdminRow) =>
     onChange(list.map((row, i) => (i === index ? next : row)));
 
-  const move = (index, delta) => {
+  const move = (index: number, delta: number) => {
     const target = index + delta;
     if (target < 0 || target >= list.length) return;
     const next = [...list];
@@ -249,7 +288,7 @@ export function Repeater({ spec, rows, options, errors, errorPrefix, onChange })
     onChange(next);
   };
 
-  const relocate = (from, to) => {
+  const relocate = (from: number | null, to: number | null) => {
     if (from === to || from == null || to == null) return;
     const next = [...list];
     const [moved] = next.splice(from, 1);
@@ -382,7 +421,7 @@ export function Repeater({ spec, rows, options, errors, errorPrefix, onChange })
                 <div key={nested.key} className="mt-4 border-t border-[#4a6b72]/15 pt-2">
                   <Repeater
                     spec={nested}
-                    rows={row[nested.key]}
+                    rows={row[nested.key] as AdminRow[] | undefined}
                     options={options}
                     errors={errors}
                     errorPrefix={`${errorPrefix}${index}.${nested.key}.`}
@@ -398,7 +437,15 @@ export function Repeater({ spec, rows, options, errors, errorPrefix, onChange })
   );
 }
 
-function IconButton({ label, onClick, danger, disabled, children }) {
+type IconButtonProps = {
+  label: string;
+  onClick: () => void;
+  danger?: boolean;
+  disabled?: boolean;
+  children: ReactNode;
+};
+
+function IconButton({ label, onClick, danger, disabled, children }: IconButtonProps) {
   return (
     <button
       type="button"
diff --git a/src/data/bannerConfig.d.ts b/src/data/bannerConfig.d.ts
new file mode 100644
index 0000000..fb9f86d
--- /dev/null
+++ b/src/data/bannerConfig.d.ts
@@ -0,0 +1,10 @@
+/* Types for bannerConfig.js. */
+
+export type BannerPart = { text: string; href?: string; external?: boolean };
+
+export declare const SITE_BANNER: {
+  enabled: boolean;
+  id: string;
+  content: BannerPart[];
+  dismissible: boolean;
+};
diff --git a/src/data/chapters.d.ts b/src/data/chapters.d.ts
new file mode 100644
index 0000000..aa09570
--- /dev/null
+++ b/src/data/chapters.d.ts
@@ -0,0 +1,47 @@
+/* Types for chapters.js: GET /organizations rows with their
+   kind-specific details lifted to the top level. */
+
+import type { OrganizationListItem, RegionArea, RegionScope } from "../lib/useContent.ts";
+import type { AreaSlice, RegionAreaRow } from "./mapGrid.js";
+
+export { initialsFor } from "./organizations.js";
+
+export type Region = OrganizationListItem & {
+  scope: RegionScope | null;
+  map_note: string | null;
+  areas: RegionArea[];
+};
+
+export type Chapter = OrganizationListItem & {
+  region_id: string | null;
+  region_name: string | null;
+  region_color: string | null;
+  meets: string | null;
+  started: string | null;
+  /** The map tile this chapter lights up, or null if it has none. */
+  area_code: string | null;
+};
+
+export type Community = {
+  loading: boolean;
+  error: Error | null;
+
+  regions: Region[];
+  regionAreas: RegionAreaRow[];
+  regionById: Record<string, Region>;
+  domestic: Region[];
+  international: Region[];
+  virtual: Region[];
+
+  chapters: Chapter[];
+  chaptersIn: (regionId: string) => Chapter[];
+
+  slices: Record<string, AreaSlice[]>;
+  chapterCounts: Record<string, number>;
+  regionsForArea: (areaCode: string) => Region[];
+
+  areasLabelFor: (regionId: string) => string;
+  subtextFor: (region: Pick<Region, "id" | "map_note">) => string;
+};
+
+export declare function useCommunity(): Community;
diff --git a/src/data/eventData.d.ts b/src/data/eventData.d.ts
new file mode 100644
index 0000000..1542ac6
--- /dev/null
+++ b/src/data/eventData.d.ts
@@ -0,0 +1,27 @@
+/* Types for eventData.js. Rows are GET /events as shapeEvent in
+   server/src/routes/content.js sends them. */
+
+import type { EventType } from "../lib/eventTypes.ts";
+import type { EventListItem } from "../lib/useContent.ts";
+
+export type EventFilter = {
+  section?: string;
+  host?: string;
+  status?: EventListItem["status"];
+  type?: EventType | EventType[];
+};
+
+export declare function useEvents(filter?: EventFilter): {
+  events: EventListItem[];
+  loading: boolean;
+  error: Error | null;
+};
+
+export declare function splitByStatus<T extends { status: string }>(
+  events?: T[],
+): { upcoming: T[]; past: T[] };
+
+export declare function typesPresent<D extends { id: string }>(
+  events?: Array<{ event_type: string }>,
+  declared?: readonly D[],
+): D[];
diff --git a/src/data/feedbackTypes.d.ts b/src/data/feedbackTypes.d.ts
new file mode 100644
index 0000000..27fc58b
--- /dev/null
+++ b/src/data/feedbackTypes.d.ts
@@ -0,0 +1,7 @@
+/* Types for feedbackTypes.js. */
+
+export type FeedbackType = { id: string; label: string; hint: string };
+
+export declare const FEEDBACK_TYPES: FeedbackType[];
+
+export declare function feedbackTypeLabel(id: string): string;
diff --git a/src/data/mapGrid.d.ts b/src/data/mapGrid.d.ts
new file mode 100644
index 0000000..1bad7c9
--- /dev/null
+++ b/src/data/mapGrid.d.ts
@@ -0,0 +1,51 @@
+/* Types for mapGrid.js. */
+
+import type { RegionArea } from "../lib/useContent.ts";
+
+export declare const GRID_COLS: number;
+export declare const GRID_ROWS: number;
+
+export declare const AREA_NAMES: Record<string, string>;
+
+/** One tile: a state, or a band such as CANADA with a span. */
+export type MapArea = {
+  code: string;
+  name: string;
+  col: number;
+  row: number;
+  span: number;
+  isState: boolean;
+};
+
+export declare const AREAS: readonly MapArea[];
+export declare const AREA_BY_CODE: Record<string, MapArea>;
+
+/** A region_areas row flattened with its region, as buildAreaSlices takes it. */
+export type RegionAreaRow = RegionArea & { region_id: string };
+
+/** One region's share of a tile. */
+export type AreaSlice = {
+  regionId: string;
+  name: string;
+  color: string | null | undefined;
+  share: number;
+  edge: RegionArea["edge"];
+  note: string | null;
+};
+
+type Locatable = {
+  is_online?: boolean;
+  country?: string | null;
+  state_code?: string | null;
+};
+
+export declare function areaForChapter(chapter: Locatable | null | undefined): string | null;
+
+export declare function buildAreaSlices(
+  regionAreas?: RegionAreaRow[],
+  regions?: Array<{ id: string; name: string; color?: string | null }>,
+): Record<string, AreaSlice[]>;
+
+export declare function countChaptersByArea(chapters?: Locatable[]): Record<string, number>;
+
+export declare function areasLabel(regionId: string, regionAreas?: RegionAreaRow[]): string;
diff --git a/src/data/organizations.d.ts b/src/data/organizations.d.ts
new file mode 100644
index 0000000..61234f1
--- /dev/null
+++ b/src/data/organizations.d.ts
@@ -0,0 +1,21 @@
+/* Types for organizations.js. Rows are GET /organizations as
+   shapeOrganization in server/src/routes/content.js sends them. */
+
+import type { OrgKind } from "../lib/hrefs.ts";
+import type { OrganizationListItem, RegionArea } from "../lib/useContent.ts";
+
+export declare function useOrganizations(kind?: OrgKind): {
+  organizations: OrganizationListItem[];
+  loading: boolean;
+  error: Error | null;
+};
+
+export declare function orgPath(
+  org: { id: string; kind?: string | null } | null | undefined,
+): string | null;
+
+export declare function areasSentence(
+  areas?: Array<Pick<RegionArea, "area_code" | "note">>,
+): string;
+
+export declare function initialsFor(name?: string): string;
diff --git a/src/lib/adminSchema.d.ts b/src/lib/adminSchema.d.ts
new file mode 100644
index 0000000..99754b1
--- /dev/null
+++ b/src/lib/adminSchema.d.ts
@@ -0,0 +1,118 @@
+/* Types for adminSchema.js: the client half of the descriptor-driven
+   admin CRUD engine. Rows are whatever columns the server-side
+   descriptor in server/src/admin-schema.js declares, so they stay a
+   string-keyed record; the descriptors are what's fixed. */
+
+/** A row from /api/admin/:entity or /:entity/:id. Nested paths
+ *  ('region.scope') are side-table objects under their key, and
+ *  child collections are arrays of rows under theirs. */
+export type AdminRow = Record<string, unknown>;
+
+/** One row of an OPTION_QUERIES result. `kind` and `org_id` ride
+ *  along on the lists that filterBy narrows. */
+export type AdminOption = {
+  id: string;
+  label: string;
+  kind?: string;
+  org_id?: string | null;
+};
+
+/** GET /api/admin/options, keyed by OPTION_QUERIES name. */
+export type AdminOptions = Record<string, AdminOption[]>;
+
+export type FieldWidget =
+  | "text"
+  | "textarea"
+  | "select"
+  | "checkbox"
+  | "color"
+  | "number"
+  | "date";
+
+/** A bare value, or [value, label]. */
+export type SelectOption = string | readonly [string, string];
+
+/** Show a group or collection only when another field has this value. */
+export type FieldCondition = { path: string; value: unknown };
+
+export type AdminFieldSpec = {
+  path: string;
+  label: string;
+  widget?: FieldWidget;
+  required?: boolean;
+  full?: boolean;
+  help?: string;
+  options?: readonly SelectOption[];
+  optionsFrom?: string;
+  blankLabel?: string;
+  filterBy?: (option: AdminOption, row: AdminRow) => boolean;
+  /* Set by EntityEdit on the id field rather than in a manifest. */
+  readOnly?: boolean;
+  prefix?: string;
+  prefixPending?: boolean;
+  placeholder?: string;
+};
+
+export type FieldGroupSpec = {
+  legend: string;
+  note?: string;
+  when?: FieldCondition;
+  fields: AdminFieldSpec[];
+};
+
+export type CollectionSpec = {
+  key: string;
+  label: string;
+  addLabel?: string;
+  note?: string;
+  when?: FieldCondition;
+  title?: (row: AdminRow, options: AdminOptions | null | undefined) => string;
+  blank: AdminRow;
+  fields: AdminFieldSpec[];
+  children?: CollectionSpec[];
+};
+
+export type ListColumn = {
+  key: string;
+  label: string;
+  primary?: boolean;
+  widget?: "bool";
+};
+
+export type ListFilter = {
+  key: string;
+  label: string;
+  options?: readonly SelectOption[];
+  optionsFrom?: string;
+};
+
+export type EntitySpec = {
+  key: string;
+  label: string;
+  singular: string;
+  idLabel: string;
+  /** "auto": the table assigns the id, so the form shows it rather than asking. */
+  idKind?: "auto";
+  /** Field(s) the slug is composed from. Absent when idKind is "auto". */
+  slugFrom?: string | string[];
+  titleFrom?: string;
+  list: { columns: ListColumn[]; filters: ListFilter[] };
+  groups: FieldGroupSpec[];
+  children?: CollectionSpec[];
+};
+
+export type AdminEntityKey =
+  | "organizations"
+  | "events"
+  | "people"
+  | "teams"
+  | "awards"
+  | "timeline";
+
+/* Indexed by route param as often as by name, so any other string
+   reads as possibly missing. */
+export declare const ADMIN_ENTITIES: { readonly [K in AdminEntityKey]: EntitySpec } & {
+  readonly [key: string]: EntitySpec | undefined;
+};
+
+export declare function slugify(value: unknown): string;
diff --git a/src/lib/adminTitle.tsx b/src/lib/adminTitle.tsx
index 602694d..e51b16c 100644
--- a/src/lib/adminTitle.tsx
+++ b/src/lib/adminTitle.tsx
@@ -14,12 +14,14 @@
 
 import { createContext, useContext, useEffect } from "react";
 
-export const AdminTitleContext = createContext(null);
+export type AdminTitleValue = { setDetail: (value: string | null) => void };
+
+export const AdminTitleContext = createContext<AdminTitleValue | null>(null);
 
 /* Publish the name of whatever this page is showing. Clears on
    unmount, so navigating away can't leave a stale record name in
    the tab. */
-export function useAdminDetail(name) {
+export function useAdminDetail(name: string | null | undefined) {
   const setDetail = useContext(AdminTitleContext)?.setDetail;
 
   useEffect(() => {
diff --git a/src/lib/api.d.ts b/src/lib/api.d.ts
new file mode 100644
index 0000000..fa080a0
--- /dev/null
+++ b/src/lib/api.d.ts
@@ -0,0 +1,26 @@
+/* Types for api.js. The response type is the caller's to name:
+   every endpoint sends a different body, so get<T> defaults to
+   unknown rather than pretending to know. */
+
+/** Per-field messages, as admin-crud.js and feedback.js send them. */
+export type FieldErrors = Record<string, string>;
+
+export declare class ApiError extends Error {
+  status?: number;
+  fields?: FieldErrors;
+  constructor(message: string, options?: { status?: number; fields?: FieldErrors });
+}
+
+export declare function get<T = unknown>(
+  path: string,
+  options?: { ttl?: number; fallback?: T },
+): Promise<T>;
+
+export declare function invalidate(path?: string): void;
+
+export declare function post<T = unknown>(path: string, data: unknown): Promise<T>;
+
+export declare function patch<T = unknown>(path: string, data: unknown): Promise<T>;
+
+/* A 204 comes back as null. */
+export declare function del<T = null>(path: string): Promise<T>;
diff --git a/src/lib/auth.tsx b/src/lib/auth.tsx
index 37c96c5..9ece77f 100644
--- a/src/lib/auth.tsx
+++ b/src/lib/auth.tsx
@@ -13,21 +13,40 @@
    staring at an empty table.
    ═══════════════════════════════════════════════════════════════ */
 
-import { createContext, useCallback, useContext, useEffect, useState } from "react";
+import { createContext, useCallback, useContext, useEffect, useState, type ReactNode } from "react";
 import { Navigate, Outlet, useLocation } from "react-router-dom";
 
 import { get, post, ApiError } from "./api.js";
+import type { Role } from "./roles.ts";
 
-const AuthContext = createContext(null);
+/* What currentUser() in server/src/auth.js returns, and what
+   /auth/me and /auth/login send under `user`. */
+export type AdminUser = {
+  id: number;
+  email: string;
+  name: string | null;
+  role: Role;
+};
 
-export function AuthProvider({ children }) {
-  const [user, setUser] = useState(null);
+type AuthResponse = { user: AdminUser };
+
+type AuthValue = {
+  user: AdminUser | null;
+  loading: boolean;
+  login: (email: string, password: string) => Promise<AdminUser>;
+  logout: () => Promise<void>;
+};
+
+const AuthContext = createContext<AuthValue | null>(null);
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  const [user, setUser] = useState<AdminUser | null>(null);
   const [loading, setLoading] = useState(true);
 
   useEffect(() => {
     let ignore = false;
 
-    get("/auth/me", { ttl: 0 })
+    get<AuthResponse>("/auth/me", { ttl: 0 })
       .then((data) => {
         if (!ignore) setUser(data.user);
       })
@@ -43,8 +62,8 @@ export function AuthProvider({ children }) {
     };
   }, []);
 
-  const login = useCallback(async (email, password) => {
-    const data = await post("/auth/login", { email, password });
+  const login = useCallback(async (email: string, password: string) => {
+    const data = await post<AuthResponse>("/auth/login", { email, password });
     setUser(data.user);
     return data.user;
   }, []);
@@ -73,7 +92,7 @@ export function useAuth() {
 
 /* Signals a session that ended while the page was open — the
    admin pages call this when a request comes back 401. */
-export function isUnauthorized(error) {
+export function isUnauthorized(error: unknown): boolean {
   return error instanceof ApiError && error.status === 401;
 }
 
diff --git a/src/lib/sections.tsx b/src/lib/sections.tsx
index 9d69fdb..b9184ba 100644
--- a/src/lib/sections.tsx
+++ b/src/lib/sections.tsx
@@ -1,4 +1,4 @@
-import { useState } from "react";
+import { useState, type ComponentType, type ReactNode } from "react";
 
 /* ═══════════════════════════════════════════════════════════════
    SECTION MANIFEST
@@ -33,25 +33,69 @@ import { useState } from "react";
    want them.
    ═══════════════════════════════════════════════════════════════ */
 
-export function useSectionManifest(manifest) {
+/* What every section Component is handed on top of its own props. */
+export type SectionInjected = { accent: string; view?: string };
+
+export type SectionToggleProps = {
+  view: string;
+  setView: (value: string) => void;
+  accent: string;
+  options: string[];
+};
+
+export type SectionViews = {
+  options: string[];
+  default?: string;
+  Toggle: ComponentType<SectionToggleProps>;
+};
+
+export type SectionHeading = {
+  id: string;
+  title: string;
+  blurb?: string;
+  accent: string;
+  background: string;
+};
+
+export type SectionEntry<P extends object = Record<string, unknown>> = SectionHeading & {
+  Component: ComponentType<P & SectionInjected>;
+  /* The Component decides P; props are checked against it. */
+  props?: NoInfer<P>;
+  views?: SectionViews;
+};
+
+/* A manifest mixes components with different props, which no single
+   array element type can check. This checks each entry against its
+   own Component where it's written, then forgets P so the entries
+   fit one array. */
+export function defineSection<P extends object>(entry: SectionEntry<P>): SectionEntry {
+  return entry as unknown as SectionEntry;
+}
+
+export type ManifestSection = SectionHeading & {
+  actions?: ReactNode;
+  content: ReactNode;
+};
+
+export function useSectionManifest(manifest: SectionEntry[]): ManifestSection[] {
   // One entry per section that has a toggle, seeded from its
   // declared default so the control is right before anything loads.
-  const [views, setViews] = useState(() =>
+  const [views, setViews] = useState<Record<string, string | null>>(() =>
     Object.fromEntries(
       manifest
         .filter(entry => entry.views)
         .map(entry => [
           entry.id,
-          entry.views.default ?? entry.views.options?.[0] ?? null,
+          entry.views?.default ?? entry.views?.options[0] ?? null,
         ]),
     ),
   );
 
-  const setView = (id, value) => setViews(prev => ({ ...prev, [id]: value }));
+  const setView = (id: string, value: string) => setViews(prev => ({ ...prev, [id]: value }));
 
   return manifest.map(entry => {
     const { Component, props, views: spec, ...heading } = entry;
-    const view = views[entry.id];
+    const view = views[entry.id] ?? undefined;
     const Toggle = spec?.Toggle;
 
     return {
@@ -59,7 +103,7 @@ export function useSectionManifest(manifest) {
 
       actions: Toggle ? (
         <Toggle
-          view={view}
+          view={view ?? ""}
           setView={value => setView(entry.id, value)}
           accent={entry.accent}
           options={spec.options}
diff --git a/src/lib/timeline.ts b/src/lib/timeline.ts
index 29d02e9..5f77d2d 100644
--- a/src/lib/timeline.ts
+++ b/src/lib/timeline.ts
@@ -23,6 +23,8 @@
  * and the public/ layout stay the frontend's business.
  */
 
+import type { OrgKind } from './hrefs.ts'
+
 export type DatePrecision = 'year' | 'month' | 'day'
 
 /** What an entry is about. Drives the marker and the body layout. */
@@ -41,6 +43,8 @@ export type TimelineRef = {
   kind: RefKind
   /** The row's TEXT primary key — an event id, org slug, team slug. */
   id: string
+  /** Only on organizations: history.js copies v_timeline.org_kind. */
+  orgKind?: OrgKind
 }
 
 /** Filename plus the table it came from; the directory is derived
diff --git a/src/lib/useContent.ts b/src/lib/useContent.ts
index f81cd06..1753f6a 100644
--- a/src/lib/useContent.ts
+++ b/src/lib/useContent.ts
@@ -103,12 +103,22 @@ export type EventRecord = {
   hosts: EventHost[]
   description: string[]
   links: Link[]
-  instagram?: Link | null
+  /** The instagram link's label, the handle. See splitLinks in shape.js. */
+  instagram?: string | null
   blocks: ContentBlock[]
   people: EventPerson[]
   awards: EventAward[]
 }
 
+/** One row of GET /events: shapeEvent without the detail-only
+ *  blocks, people and awards. */
+export type EventListItem = Omit<EventRecord, 'blocks' | 'people' | 'awards'>
+
+/** An event_sections row, as GET /events sends it beside the list. */
+export type EventSection = { id: string; name: string; sort_order: number }
+
+export type EventsResponse = { sections: EventSection[]; events: EventListItem[] }
+
 export const useEvent = (id?: string): Resource<EventRecord> =>
   useRecord<EventRecord>(detailPath('/events', id), 'event')
 
@@ -154,6 +164,17 @@ export type OrgEvent = {
   color?: string | null
 }
 
+/** regions.scope's CHECK values. */
+export type RegionScope = 'domestic' | 'international' | 'virtual'
+
+/** A region_areas row as attachRegionDetails sends it. */
+export type RegionArea = {
+  area_code: string
+  share: number
+  edge: 'top' | 'bottom' | null
+  note: string | null
+}
+
 export type OrganizationRecord = {
   id: string
   kind: 'national' | 'region' | 'chapter' | 'partner'
@@ -173,14 +194,16 @@ export type OrganizationRecord = {
   blocks: ContentBlock[]
   links: Link[]
   socials: Link[]
-  website?: Link | null
-  email?: Link | null
-  instagram?: Link | null
+  /* splitLinks in shape.js lifts these out as bare strings: the
+     website's url, the email's label, the instagram handle. */
+  website?: string | null
+  email?: string | null
+  instagram?: string | null
   /** Shape depends on `kind`; empty object for national and partner. */
   details: {
-    scope?: string | null
+    scope?: RegionScope | null
     map_note?: string | null
-    areas?: Array<{ area_code: string; share?: number | null; edge?: string | null; note?: string | null }>
+    areas?: RegionArea[]
     chapters?: Array<{ id: string; name: string; location_label?: string | null; logo?: string | null }>
     region_id?: string | null
     region_name?: string | null
@@ -194,6 +217,14 @@ export type OrganizationRecord = {
   events: OrgEvent[]
 }
 
+/** One row of GET /organizations: the card surface and details,
+ *  without the sections only the org's own page loads. */
+export type OrganizationListItem = Omit<OrganizationRecord, 'teams' | 'awards' | 'events'> & {
+  sort_order: number
+}
+
+export type OrganizationsResponse = { organizations: OrganizationListItem[] }
+
 export const useOrganization = (id?: string): Resource<OrganizationRecord> =>
   useRecord<OrganizationRecord>(detailPath('/organizations', id), 'organization')
 
@@ -211,7 +242,8 @@ export type TeamRecord = {
   description: string[]
   links: Link[]
   socials: Link[]
-  instagram?: Link | null
+  /** The instagram handle. See splitLinks in shape.js. */
+  instagram?: string | null
   blocks: ContentBlock[]
 }
 
diff --git a/src/lib/useRecord.ts b/src/lib/useRecord.ts
index bc26d16..10c07fd 100644
--- a/src/lib/useRecord.ts
+++ b/src/lib/useRecord.ts
@@ -89,7 +89,7 @@ export function useRecord<T>(path: string | null, key: string): Resource<T> {
       setError(null)
       setNotFound(false)
       try {
-        const body = await get(path as string)
+        const body = await get<Record<string, unknown> | null>(path as string)
         if (!live) return
         // A 200 with the key absent is a server-side shaping bug,
         // not an empty record. Say so rather than rendering a page
diff --git a/src/navConfig.d.ts b/src/navConfig.d.ts
new file mode 100644
index 0000000..75ace2e
--- /dev/null
+++ b/src/navConfig.d.ts
@@ -0,0 +1,20 @@
+/* Types for navConfig.js. */
+
+export type PageLink = { label: string; path: string };
+
+export type PageSectionLink = { label: string; hash: string };
+
+export type NavAction = {
+  label: string;
+  to: string;
+  /** Picks the styling, not the destination. */
+  variant: "ghost" | "fancy";
+  external?: boolean;
+};
+
+export declare const PAGE_LINKS: PageLink[];
+
+/** Keyed by the owning page's path. */
+export declare const PAGE_SECTIONS: Record<string, PageSectionLink[]>;
+
+export declare const NAV_ACTIONS: NavAction[];
diff --git a/src/pages/Community.tsx b/src/pages/Community.tsx
index 3a7dc6f..7b062ca 100644
--- a/src/pages/Community.tsx
+++ b/src/pages/Community.tsx
@@ -1,5 +1,5 @@
 import PageShell from "../components/PageShell.tsx";
-import { useSectionManifest } from "../lib/sections.tsx";
+import { defineSection, useSectionManifest } from "../lib/sections.tsx";
 import OrgListMap, { OrgMapToggle } from "./sections/OrgList-Map.tsx";
 import OrgListVertical from "./sections/OrgList-Vertical.tsx";
 import OrgListCards from "./sections/OrgList-Card.tsx";
@@ -13,7 +13,7 @@ import OrgListCards from "./sections/OrgList-Card.tsx";
    ═══════════════════════════════════════════════════════════════ */
 
 const SECTIONS = [
-  {
+  defineSection({
     id: "chapters",
     title: "Local Chapters",
     blurb:
@@ -22,8 +22,8 @@ const SECTIONS = [
     background: "#eef9fb",
     Component: OrgListMap,
     views: { options: ["map", "grid"], default: "map", Toggle: OrgMapToggle },
-  },
-  {
+  }),
+  defineSection({
     id: "regions",
     title: "Unity Regions",
     blurb:
@@ -40,8 +40,8 @@ const SECTIONS = [
         { key: "international", title: "International Unity Regions" },
       ],
     },
-  },
-  {
+  }),
+  defineSection({
     id: "partners",
     title: "Partner Organizations",
     blurb:
@@ -54,7 +54,7 @@ const SECTIONS = [
       pageLabel: "Partner page",
       empty: "· Partner organizations coming soon ·",
     },
-  },
+  }),
 ];
 
 export default function CommunityPage() {
diff --git a/src/pages/EventDetail.tsx b/src/pages/EventDetail.tsx
index c4460be..87a2ace 100644
--- a/src/pages/EventDetail.tsx
+++ b/src/pages/EventDetail.tsx
@@ -18,7 +18,7 @@
 
 import { Link, useParams } from 'react-router-dom'
 
-import PageShell from '../components/PageShell.tsx'
+import PageShell, { type ShellSection } from '../components/PageShell.tsx'
 import PageState from '../components/PageState.tsx'
 import ContentBlocks from '../components/ContentBlocks.tsx'
 import PeopleTiles, { type PeopleGroupInput } from '../components/PeopleTiles.tsx'
@@ -85,7 +85,7 @@ export default function EventDetail() {
   const accent = event.color || TEAL
   const groups = peopleGroups(event.people, accent)
 
-  const sections = [
+  const sections: ShellSection[] = [
     {
       id: 'about',
       title: event.theme || 'About',
diff --git a/src/pages/Home.tsx b/src/pages/Home.tsx
index af2ed62..521ac5e 100644
--- a/src/pages/Home.tsx
+++ b/src/pages/Home.tsx
@@ -149,7 +149,15 @@ const EDGE_FADE = `linear-gradient(to right,
   transparent calc(50% + (${HALF_SLIDE} + ${FADE_DIST})))`;
 
 {/* Functions */}
-function WaveText({ text, baseDelay = 0, step = 0.1 }) {
+function WaveText({
+  text,
+  baseDelay = 0,
+  step = 0.1,
+}: {
+  text: string;
+  baseDelay?: number;
+  step?: number;
+}) {
   return (
     <>
       {text.split("").map((char, i) => (
@@ -179,7 +187,7 @@ export default function Home() {
   const prev = () => setIndex(i => Math.max(0, i - 1));
   const next = () => setIndex(i => Math.min(EVENTS.length - 1, i + 1));
 
-  const arrowStyle = enabled => ({
+  const arrowStyle = (enabled: boolean) => ({
     border: `1px solid ${TEAL}`,
     background: "rgba(255,255,255,0.6)",
     color: enabled ? TEAL : "#b8c6c9",
diff --git a/src/pages/OrganizationDetail.tsx b/src/pages/OrganizationDetail.tsx
index ec9977a..e427a39 100644
--- a/src/pages/OrganizationDetail.tsx
+++ b/src/pages/OrganizationDetail.tsx
@@ -331,7 +331,13 @@ function Contact({ org, accent }: { org: OrganizationRecord; accent: string }) {
         </a>
       ))}
 
-      {[org.website, org.email, ...org.socials]
+      {/* website and email arrive as bare strings (splitLinks in
+          shape.js); socials are whole link rows. */}
+      {[
+        org.website ? { url: org.website, label: 'Website' } : null,
+        org.email ? { url: `mailto:${org.email}`, label: org.email } : null,
+        ...org.socials,
+      ]
         .filter((link): link is NonNullable<typeof link> => Boolean(link))
         .map((link) => (
           <a
diff --git a/src/pages/Retreats.tsx b/src/pages/Retreats.tsx
index 17d3bbd..119bb20 100644
--- a/src/pages/Retreats.tsx
+++ b/src/pages/Retreats.tsx
@@ -1,5 +1,5 @@
 import PageShell from "../components/PageShell.tsx";
-import { useSectionManifest } from "../lib/sections.tsx";
+import { defineSection, useSectionManifest } from "../lib/sections.tsx";
 import EventListCards, { EventCardsToggle } from "./sections/EventList-Cards.tsx";
 
 /* ═══════════════════════════════════════════════════════════════
@@ -35,10 +35,10 @@ const CARD_VIEWS = { options: ["carousel", "grid"], Toggle: EventCardsToggle };
 
 /* Pinned on every band. Named rather than repeated so turning this
    page into "everything, filtered" later is one deletion. */
-const RETREATS = { type: "retreat" };
+const RETREATS = { type: "retreat" } as const;
 
 const SECTIONS = [
-  {
+  defineSection({
     id: "national",
     title: "National Retreats",
     blurb: "Our flagship gatherings, open to young adults across the country.",
@@ -47,8 +47,8 @@ const SECTIONS = [
     Component: EventListCards,
     props: { section: "national", ...RETREATS },
     views: { ...CARD_VIEWS, default: "carousel" },
-  },
-  {
+  }),
+  defineSection({
     id: "regional",
     title: "Regional Retreats",
     blurb: "Smaller gatherings hosted by regions throughout the year.",
@@ -57,8 +57,8 @@ const SECTIONS = [
     Component: EventListCards,
     props: { section: "regional", ...RETREATS },
     views: { ...CARD_VIEWS, default: "grid" },
-  },
-  {
+  }),
+  defineSection({
     id: "partner",
     title: "Partner Events",
     blurb: "Retreats hosted by organizations we collaborate with.",
@@ -67,13 +67,13 @@ const SECTIONS = [
     Component: EventListCards,
     props: { section: "partner", ...RETREATS },
     views: { ...CARD_VIEWS, default: "grid" },
-  },
+  }),
 
   /* The other three scopes, ready to uncomment. Each needs an accent
      and a background of its own — those are presentation and live
      here, not in event_sections.
 
-  {
+  defineSection({
     id: "local",
     title: "Local Events",
     blurb: "Hosted by individual chapters.",
@@ -82,8 +82,8 @@ const SECTIONS = [
     Component: EventListCards,
     props: { section: "local", ...RETREATS_ONLY },
     views: { ...CARD_VIEWS, default: "grid" },
-  },
-  {
+  }),
+  defineSection({
     id: "international",
     title: "International Events",
     blurb: "Gatherings beyond the US.",
@@ -92,8 +92,8 @@ const SECTIONS = [
     Component: EventListCards,
     props: { section: "international", ...RETREATS_ONLY },
     views: { ...CARD_VIEWS, default: "grid" },
-  },
-  {
+  }),
+  defineSection({
     id: "other",
     title: "Other Events",
     blurb: "Everything that doesn't fit the categories above.",
@@ -102,7 +102,7 @@ const SECTIONS = [
     Component: EventListCards,
     props: { section: "other", ...RETREATS_ONLY },
     views: { ...CARD_VIEWS, default: "grid" },
-  },
+  }),
 
   */
 ];
diff --git a/src/pages/admin/AdminFeedback.tsx b/src/pages/admin/AdminFeedback.tsx
index dbfbb3d..c2ef0fb 100644
--- a/src/pages/admin/AdminFeedback.tsx
+++ b/src/pages/admin/AdminFeedback.tsx
@@ -25,9 +25,37 @@ import { isUnauthorized, useAuth } from "../../lib/auth.tsx";
 import { canWrite as roleCanWrite, canDelete } from "../../lib/roles.ts";
 import { feedbackTypeLabel } from "../../data/feedbackTypes.js";
 
-const STATUSES = ["new", "read", "actioned", "archived", "spam"];
+/* feedback.status's CHECK values, in triage order. */
+const STATUSES = ["new", "read", "actioned", "archived", "spam"] as const;
 
-const STATUS_STYLE = {
+type FeedbackStatus = (typeof STATUSES)[number];
+
+/* The columns GET /api/admin/feedback selects. */
+type FeedbackRow = {
+  id: number;
+  created_at: string;
+  feedback_type: string;
+  message: string;
+  name: string | null;
+  email: string | null;
+  page_path: string | null;
+  section_id: string | null;
+  status: FeedbackStatus;
+  admin_note: string | null;
+};
+
+type FeedbackPage = {
+  feedback: FeedbackRow[];
+  /** Unfiltered, one per status. */
+  counts: Record<FeedbackStatus, number>;
+  nextCursor: number | null;
+};
+
+type FeedbackChanges = { status?: FeedbackStatus; admin_note?: string };
+
+type StatusFilter = FeedbackStatus | "all";
+
+const STATUS_STYLE: Record<FeedbackStatus, string> = {
   new: "bg-[#138ba0] text-white",
   read: "bg-[#eef9fb] text-[#138ba0]",
   actioned: "bg-[#eaf3e2] text-[#4a6b2f]",
@@ -37,7 +65,7 @@ const STATUS_STYLE = {
 
 // created_at is UTC in 'YYYY-MM-DD HH:MM:SS' form, which Safari
 // won't parse without the T and the Z.
-function formatDate(value) {
+function formatDate(value: string) {
   const date = new Date(`${value.replace(" ", "T")}Z`);
   return date.toLocaleString(undefined, {
     dateStyle: "medium",
@@ -45,26 +73,34 @@ function formatDate(value) {
   });
 }
 
-function locationOf(row) {
+function locationOf(row: FeedbackRow) {
   if (!row.page_path) return "Not page-specific";
   return row.section_id ? `${row.page_path} #${row.section_id}` : row.page_path;
 }
 
 /* ── One submission ──────────────────────────────────────────── */
 
-function FeedbackCard({ row, onChange, onRemove, canWrite, canRemove }) {
+type FeedbackCardProps = {
+  row: FeedbackRow;
+  onChange: (row: FeedbackRow) => void;
+  onRemove: (row: FeedbackRow) => void;
+  canWrite: boolean;
+  canRemove: boolean;
+};
+
+function FeedbackCard({ row, onChange, onRemove, canWrite, canRemove }: FeedbackCardProps) {
   const [note, setNote] = useState(row.admin_note ?? "");
   const [busy, setBusy] = useState(false);
-  const [error, setError] = useState(null);
+  const [error, setError] = useState<string | null>(null);
   const [confirming, setConfirming] = useState(false);
 
   const noteDirty = note !== (row.admin_note ?? "");
 
-  async function save(changes) {
+  async function save(changes: FeedbackChanges) {
     setBusy(true);
     setError(null);
     try {
-      const data = await patch(`/admin/feedback/${row.id}`, changes);
+      const data = await patch<{ feedback: FeedbackRow }>(`/admin/feedback/${row.id}`, changes);
       onChange(data.feedback);
     } catch (err) {
       setError(err instanceof ApiError ? err.message : "Couldn't save that.");
@@ -141,7 +177,8 @@ function FeedbackCard({ row, onChange, onRemove, canWrite, canRemove }) {
               id={`status-${row.id}`}
               value={row.status}
               disabled={busy}
-              onChange={(e) => save({ status: e.target.value })}
+              // The options are STATUSES, so the value is always one of them.
+              onChange={(e) => save({ status: e.target.value as FeedbackStatus })}
               className="rounded-lg border border-[#4a6b72]/25 bg-white px-3 py-1.5 text-sm text-[#26454c] outline-none focus:border-[#138ba0] focus:ring-2 focus:ring-[#138ba0]/25"
             >
               {STATUSES.map((s) => (
@@ -228,22 +265,22 @@ export default function AdminFeedback() {
   const { user } = useAuth();
   const navigate = useNavigate();
 
-  const [status, setStatus] = useState("new");
+  const [status, setStatus] = useState<StatusFilter>("new");
   const [query, setQuery] = useState("");
   const [search, setSearch] = useState(""); // applied, not typed
 
-  const [rows, setRows] = useState([]);
-  const [counts, setCounts] = useState({});
-  const [cursor, setCursor] = useState(null);
+  const [rows, setRows] = useState<FeedbackRow[]>([]);
+  const [counts, setCounts] = useState<Partial<Record<FeedbackStatus, number>>>({});
+  const [cursor, setCursor] = useState<number | null>(null);
   const [loading, setLoading] = useState(true);
-  const [error, setError] = useState(null);
+  const [error, setError] = useState<string | null>(null);
 
   // Minimums, not equality — see lib/roles.ts.
   const canWrite = roleCanWrite(user);
   const canRemove = canDelete(user);
 
   const load = useCallback(
-    async (before = null) => {
+    async (before: number | null = null) => {
       setLoading(true);
       setError(null);
 
@@ -253,7 +290,7 @@ export default function AdminFeedback() {
       if (before) params.set("before", String(before));
 
       try {
-        const data = await get(`/admin/feedback?${params}`, { ttl: 0 });
+        const data = await get<FeedbackPage>(`/admin/feedback?${params}`, { ttl: 0 });
         setRows((prev) => (before ? [...prev, ...data.feedback] : data.feedback));
         setCounts(data.counts);
         setCursor(data.nextCursor);
@@ -277,7 +314,7 @@ export default function AdminFeedback() {
     load();
   }, [load]);
 
-  function replaceRow(updated) {
+  function replaceRow(updated: FeedbackRow) {
     setRows((prev) =>
       prev
         .map((row) => (row.id === updated.id ? updated : row))
@@ -290,7 +327,7 @@ export default function AdminFeedback() {
 
   // The deleted row is passed whole rather than by id: its status
   // is what says which tab count to drop.
-  function removeRow(removed) {
+  function removeRow(removed: FeedbackRow) {
     setRows((prev) => prev.filter((row) => row.id !== removed.id));
     setCounts((prev) => ({
       ...prev,
@@ -298,7 +335,7 @@ export default function AdminFeedback() {
     }));
   }
 
-  const tabs = [
+  const tabs: Array<{ id: StatusFilter; label: string; count?: number }> = [
     { id: "all", label: "All" },
     ...STATUSES.map((s) => ({ id: s, label: s, count: counts[s] })),
   ];
diff --git a/src/pages/admin/AdminHome.tsx b/src/pages/admin/AdminHome.tsx
index 0d17675..610b0dc 100644
--- a/src/pages/admin/AdminHome.tsx
+++ b/src/pages/admin/AdminHome.tsx
@@ -18,17 +18,18 @@
    record) wants to be a separate component that fails on its own.
    ═══════════════════════════════════════════════════════════════ */
 
+import type { ReactNode } from "react";
 import { Link } from "react-router-dom";
 import { useAuth } from "../../lib/auth.tsx";
 import { SITE_VERSION } from "../../lib/version.ts";
 import { ROLE_LABELS, isSuper } from "../../lib/roles.ts";
-import { CMS_NAV, FORMS_NAV, PANEL_NAV, target } from "./adminNav.js";
+import { CMS_NAV, FORMS_NAV, PANEL_NAV, target, type AdminNavItem } from "./adminNav.js";
 
 /* One card. The title link is stretched over the whole card with
    `after:absolute`, which makes the card clickable without nesting
    an anchor inside an anchor; the sub-links sit above it on z-10 so
    they stay separately clickable. */
-function NavCard({ item }) {
+function NavCard({ item }: { item: AdminNavItem }) {
   const to = target(item);
 
   // Drop the child that just repeats the card's own destination —
@@ -75,7 +76,15 @@ function NavCard({ item }) {
   );
 }
 
-function CardBlock({ title, blurb, children }) {
+function CardBlock({
+  title,
+  blurb,
+  children,
+}: {
+  title: string;
+  blurb?: string;
+  children: ReactNode;
+}) {
   return (
     <div className="mt-10">
       <div className="flex items-baseline gap-3">
@@ -87,7 +96,7 @@ function CardBlock({ title, blurb, children }) {
   );
 }
 
-function PanelSection({ title, children }) {
+function PanelSection({ title, children }: { title: string; children: ReactNode }) {
   return (
     <section className="border-b border-[#138ba0]/10 px-5 py-4 last:border-b-0">
       <h2 className="text-xs font-semibold uppercase tracking-wider text-[#4a6b72]/70">
@@ -107,7 +116,7 @@ const QUICK_ADD = [
 
 export default function AdminHome() {
   const { user } = useAuth();
-  const role = ROLE_LABELS[user?.role] ?? user?.role;
+  const role = user ? (ROLE_LABELS[user.role] ?? user.role) : undefined;
 
   return (
     <div className="grid gap-8 lg:grid-cols-[1fr_17rem] lg:items-start">
diff --git a/src/pages/admin/AdminLayout.tsx b/src/pages/admin/AdminLayout.tsx
index ab073ec..51c8344 100644
--- a/src/pages/admin/AdminLayout.tsx
+++ b/src/pages/admin/AdminLayout.tsx
@@ -56,8 +56,8 @@ export default function AdminLayout() {
   // What the page below has published about itself — a record
   // name, or null on a list. setDetail is stable so publishing
   // can't loop.
-  const [detail, setDetail] = useState(null);
-  const stableSet = useCallback((value) => setDetail(value), []);
+  const [detail, setDetail] = useState<string | null>(null);
+  const stableSet = useCallback((value: string | null) => setDetail(value), []);
   const titleContext = useMemo(() => ({ setDetail: stableSet }), [stableSet]);
 
   useEffect(() => {
diff --git a/src/pages/admin/AdminLogin.tsx b/src/pages/admin/AdminLogin.tsx
index e558dda..44c6720 100644
--- a/src/pages/admin/AdminLogin.tsx
+++ b/src/pages/admin/AdminLogin.tsx
@@ -10,7 +10,7 @@
    starts working.
    ═══════════════════════════════════════════════════════════════ */
 
-import { useState } from "react";
+import { useState, type FormEvent } from "react";
 import { useLocation, useNavigate } from "react-router-dom";
 
 import { useAuth } from "../../lib/auth.tsx";
@@ -29,12 +29,12 @@ export default function AdminLogin() {
 
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
-  const [error, setError] = useState(null);
+  const [error, setError] = useState<string | null>(null);
   const [busy, setBusy] = useState(false);
 
   const destination = location.state?.from?.pathname ?? "/admin/home";
 
-  async function handleSubmit(event) {
+  async function handleSubmit(event: FormEvent<HTMLFormElement>) {
     event.preventDefault();
     if (busy) return;
 
diff --git a/src/pages/admin/AdminPanel.tsx b/src/pages/admin/AdminPanel.tsx
index 5a9e22c..a2219c2 100644
--- a/src/pages/admin/AdminPanel.tsx
+++ b/src/pages/admin/AdminPanel.tsx
@@ -24,23 +24,54 @@
    the reason shows up before the click rather than after it.
    ═══════════════════════════════════════════════════════════════ */
 
-import { useCallback, useEffect, useState } from "react";
+import { useCallback, useEffect, useState, type ReactNode } from "react";
 import { del, get, patch } from "../../lib/api.js";
 import { isUnauthorized, useAuth } from "../../lib/auth.tsx";
 import { useNavigate } from "react-router-dom";
-import { ROLES, ROLE_LABELS, ROLE_NOTES } from "../../lib/roles.ts";
+import { ROLES, ROLE_LABELS, ROLE_NOTES, type Role } from "../../lib/roles.ts";
+
+/* An admin_users row as panel.js selects it, with its live session count. */
+type PanelUser = {
+  id: number;
+  email: string;
+  name: string | null;
+  role: Role;
+  is_active: number;
+  created_at: string;
+  last_login_at: string | null;
+  sessions: number;
+};
+
+/* GET /api/admin/panel/overview. A count is null when its table
+   doesn't exist yet. */
+type Overview = {
+  system: {
+    schemaVersion: number;
+    dbPath: string | null;
+    nodeVersion: string;
+    platform: string;
+    uptimeSeconds: number;
+    startedAt: string;
+    sessions: number | null;
+    roles: Role[];
+  };
+  content: Array<{ label: string; count: number | null }>;
+  users: PanelUser[];
+};
+
+type UserResponse = { user: PanelUser };
 
 /* SQLite hands back "2026-09-22 04:11:07" — UTC, but without the
    marker that says so. Left alone, browsers read it as local time
    and last-login drifts by the timezone offset. */
-function when(value) {
+function when(value: string | null | undefined) {
   if (!value) return "—";
   const iso = value.includes("T") ? value : `${value.replace(" ", "T")}Z`;
   const date = new Date(iso);
   return Number.isNaN(date.getTime()) ? value : date.toLocaleString();
 }
 
-function uptime(seconds) {
+function uptime(seconds: number | null | undefined) {
   if (seconds == null) return "—";
   const d = Math.floor(seconds / 86400);
   const h = Math.floor((seconds % 86400) / 3600);
@@ -50,7 +81,15 @@ function uptime(seconds) {
   return `${m}m`;
 }
 
-function Block({ title, note, children }) {
+function Block({
+  title,
+  note,
+  children,
+}: {
+  title: string;
+  note?: string;
+  children: ReactNode;
+}) {
   return (
     <section className="mt-8 first:mt-0">
       <div className="flex items-baseline gap-3">
@@ -62,7 +101,7 @@ function Block({ title, note, children }) {
   );
 }
 
-function Stat({ label, value }) {
+function Stat({ label, value }: { label: string; value: ReactNode }) {
   return (
     <div className="rounded-xl border border-[#138ba0]/20 bg-white px-4 py-3">
       <div className="text-xs font-medium uppercase tracking-wider text-[#4a6b72]/70">
@@ -77,23 +116,23 @@ export default function AdminPanel() {
   const { user: me } = useAuth();
   const navigate = useNavigate();
 
-  const [data, setData] = useState(null);
+  const [data, setData] = useState<Overview | null>(null);
   const [loading, setLoading] = useState(true);
-  const [error, setError] = useState(null);
+  const [error, setError] = useState<string | null>(null);
 
   // Which row is mid-request, and what went wrong on it. Scoped to
   // the row so a failure on one account doesn't blank the table.
-  const [busyId, setBusyId] = useState(null);
-  const [rowError, setRowError] = useState(null);
+  const [busyId, setBusyId] = useState<number | null>(null);
+  const [rowError, setRowError] = useState<{ id: number; message: string } | null>(null);
 
   const load = useCallback(async () => {
     setLoading(true);
     setError(null);
     try {
-      setData(await get("/admin/panel/overview", { ttl: 0 }));
+      setData(await get<Overview>("/admin/panel/overview", { ttl: 0 }));
     } catch (err) {
       if (isUnauthorized(err)) return navigate("/admin/login", { replace: true });
-      setError(err.message || "Couldn't load the panel.");
+      setError((err instanceof Error && err.message) || "Couldn't load the panel.");
     } finally {
       setLoading(false);
     }
@@ -105,7 +144,7 @@ export default function AdminPanel() {
 
   /* Replace the one row the server returns rather than refetching
      the whole overview — the counts didn't change. */
-  function mergeUser(updated) {
+  function mergeUser(updated: PanelUser) {
     setData((current) =>
       current
         ? {
@@ -116,30 +155,37 @@ export default function AdminPanel() {
     );
   }
 
-  async function run(id, work) {
+  async function run(id: number, work: () => Promise<PanelUser>) {
     setBusyId(id);
     setRowError(null);
     try {
       mergeUser(await work());
     } catch (err) {
       if (isUnauthorized(err)) return navigate("/admin/login", { replace: true });
-      setRowError({ id, message: err.message || "That didn't work." });
+      setRowError({ id, message: (err instanceof Error && err.message) || "That didn't work." });
     } finally {
       setBusyId(null);
     }
   }
 
-  const changeRole = (row, role) =>
-    run(row.id, async () => (await patch(`/admin/panel/users/${row.id}`, { role })).user);
-
-  const setActive = (row, is_active) =>
+  const changeRole = (row: PanelUser, role: Role) =>
     run(
       row.id,
-      async () => (await patch(`/admin/panel/users/${row.id}`, { is_active })).user,
+      async () => (await patch<UserResponse>(`/admin/panel/users/${row.id}`, { role })).user,
     );
 
-  const revoke = (row) =>
-    run(row.id, async () => (await del(`/admin/panel/users/${row.id}/sessions`)).user);
+  const setActive = (row: PanelUser, is_active: number) =>
+    run(
+      row.id,
+      async () =>
+        (await patch<UserResponse>(`/admin/panel/users/${row.id}`, { is_active })).user,
+    );
+
+  const revoke = (row: PanelUser) =>
+    run(
+      row.id,
+      async () => (await del<UserResponse>(`/admin/panel/users/${row.id}/sessions`)).user,
+    );
 
   if (loading) {
     return (
@@ -164,6 +210,9 @@ export default function AdminPanel() {
     );
   }
 
+  // Not loading and no error means the overview arrived.
+  if (!data) return null;
+
   const { system, content, users } = data;
   const activeSupers = users.filter(
     (u) => u.role === "superadmin" && u.is_active === 1,
@@ -254,7 +303,7 @@ export default function AdminPanel() {
                       <select
                         value={row.role}
                         disabled={locked || busy}
-                        onChange={(e) => changeRole(row, e.target.value)}
+                        onChange={(e) => changeRole(row, e.target.value as Role)}
                         className="rounded-lg border border-[#138ba0]/30 bg-white px-2 py-1 text-sm text-[#0f2f36] disabled:cursor-not-allowed disabled:bg-[#f6fbfc] disabled:text-[#4a6b72]/60"
                         title={
                           isMe
diff --git a/src/pages/admin/EntityEdit.tsx b/src/pages/admin/EntityEdit.tsx
index 6be500c..8ee6118 100644
--- a/src/pages/admin/EntityEdit.tsx
+++ b/src/pages/admin/EntityEdit.tsx
@@ -43,26 +43,36 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { useNavigate, useParams } from "react-router-dom";
 
-import { get, post, patch, del, ApiError } from "../../lib/api.js";
+import { get, post, patch, del, ApiError, type FieldErrors } from "../../lib/api.js";
 import { isUnauthorized, useAuth } from "../../lib/auth.tsx";
 import { useAdminDetail } from "../../lib/adminTitle.tsx";
-import { ADMIN_ENTITIES, slugify } from "../../lib/adminSchema.js";
+import {
+  ADMIN_ENTITIES,
+  slugify,
+  type AdminOptions,
+  type AdminRow,
+  type FieldCondition,
+} from "../../lib/adminSchema.js";
 import { atLeast } from "../../lib/roles.ts";
 import { Field, FieldGrid, Repeater, getPath, setPath } from "../../components/admin/fields.tsx";
 
 /* A foreign key refusing to budge is the most common way a save or
    delete fails here, and SQLite's own wording explains nothing to
    whoever is filling in the form. */
-function friendly(message, singular) {
+function friendly(message: string, singular: string): string {
   if (/FOREIGN KEY constraint failed/i.test(message ?? "")) {
     return `Something still points at this ${singular}. Reassign or remove those first.`;
   }
   return message;
 }
 
+type RowResponse = { row: AdminRow };
+
+type Notice = { tone: "ok" | "error"; text: string; recover?: "reload" };
+
 export default function EntityEdit() {
   const { entity: entityKey, id } = useParams();
-  const manifest = ADMIN_ENTITIES[entityKey];
+  const manifest = entityKey ? ADMIN_ENTITIES[entityKey] : undefined;
   const navigate = useNavigate();
   const { user } = useAuth();
 
@@ -79,9 +89,9 @@ export default function EntityEdit() {
   // Hoisted above the loading guards: the title hook below is a
   // hook, so it can't sit after an early return, and it needs the
   // same paths the heading uses.
-  const slugPaths = Array.isArray(manifest?.slugFrom)
+  const slugPaths: string[] = Array.isArray(manifest?.slugFrom)
     ? manifest.slugFrom
-    : [manifest?.slugFrom].filter(Boolean);
+    : [manifest?.slugFrom].filter((path): path is string => Boolean(path));
 
   // Everything before the last path is a qualifier: a fact about
   // another field rather than something to type. It renders as
@@ -91,7 +101,7 @@ export default function EntityEdit() {
 
   // Empty until every qualifier is chosen, because half a prefix
   // would be saved into an id that then never matches.
-  const prefixOf = (source) => {
+  const prefixOf = (source: AdminRow | null) => {
     if (qualifierPaths.length === 0) return "";
     const parts = qualifierPaths.map((path) => getPath(source, path));
     if (parts.some((part) => !part)) return "";
@@ -103,9 +113,9 @@ export default function EntityEdit() {
     ? `${qualifierPaths.map((path) => path.replace(/_id$/, "")).join("-")}-`
     : "";
 
-  const tailOf = (source) => {
+  const tailOf = (source: AdminRow | null) => {
     const prefix = prefixOf(source);
-    const value = source?.id ?? "";
+    const value = String(source?.id ?? "");
     return prefix && value.startsWith(prefix) ? value.slice(prefix.length) : value;
   };
 
@@ -114,24 +124,27 @@ export default function EntityEdit() {
   // names the field to read instead.
   const headingPath = slugPaths[slugPaths.length - 1] ?? manifest?.titleFrom;
 
-  const [form, setForm] = useState(null);
-  const [options, setOptions] = useState({});
-  const [errors, setErrors] = useState({});
-  const [message, setMessage] = useState(null);
+  // Blank when neither is set yet, which reads as "nothing to name".
+  const headingOf = (row: AdminRow) => String(getPath(row, headingPath) || row.id || "");
+
+  const [form, setForm] = useState<AdminRow | null>(null);
+  const [options, setOptions] = useState<AdminOptions>({});
+  const [errors, setErrors] = useState<Partial<FieldErrors>>({});
+  const [message, setMessage] = useState<Notice | null>(null);
   const [loading, setLoading] = useState(true);
   const [saving, setSaving] = useState(false);
   const [slugTouched, setSlugTouched] = useState(false);
 
   // The last state the server confirmed. Everything else compares
   // against this to decide whether there's anything to lose.
-  const baseline = useRef(null);
+  const baseline = useRef<string | null>(null);
 
   const load = useCallback(async () => {
     if (!manifest) return;
     setLoading(true);
     setErrors({});
     try {
-      const opts = await get("/admin/options", { ttl: 60_000 });
+      const opts = await get<{ options: AdminOptions }>("/admin/options", { ttl: 60_000 });
       setOptions(opts.options);
 
       if (isNew) {
@@ -141,12 +154,12 @@ export default function EntityEdit() {
         // server's column defaults apply to whatever isn't filled in.
         // No id key for an auto entity: the table assigns it, and
         // sending "" would be an explicit value rather than an absence.
-        const blank = autoId ? {} : { id: "" };
+        const blank: AdminRow = autoId ? {} : { id: "" };
         for (const child of manifest.children ?? []) blank[child.key] = [];
         setForm(blank);
         baseline.current = JSON.stringify(blank);
       } else {
-        const data = await get(`/admin/${manifest.key}/${id}`, { ttl: 0 });
+        const data = await get<RowResponse>(`/admin/${manifest.key}/${id}`, { ttl: 0 });
         setForm(data.row);
         baseline.current = JSON.stringify(data.row);
       }
@@ -181,7 +194,7 @@ export default function EntityEdit() {
       : isNew
         ? `New ${manifest.singular}`
         : form
-          ? getPath(form, headingPath) || form.id
+          ? headingOf(form)
           : null,
   );
 
@@ -189,7 +202,7 @@ export default function EntityEdit() {
   // Router entirely, so the only hook available is this one.
   useEffect(() => {
     if (!dirty) return undefined;
-    const warn = (event) => {
+    const warn = (event: BeforeUnloadEvent) => {
       event.preventDefault();
       event.returnValue = "";
     };
@@ -202,18 +215,19 @@ export default function EntityEdit() {
 
   /* ── Heading ───────────────────────────────────────────────── */
 
-  const heading = getPath(form, headingPath) || form.id;
+  const heading = headingOf(form);
+  const updatedAt = typeof form.updated_at === "string" ? form.updated_at : null;
 
   const children = manifest.children ?? [];
 
   /* ── Actions ───────────────────────────────────────────────── */
 
-  const leave = (to) => {
+  const leave = (to: string) => {
     if (dirty && !window.confirm("Leave without saving? Your changes will be lost.")) return;
     navigate(to);
   };
 
-  const change = (path, value) => {
+  const change = (path: string, value: unknown) => {
     setForm((prev) => {
       let next = setPath(prev, path, value);
       // Recompose the id whenever one of its sources moves. The
@@ -235,20 +249,20 @@ export default function EntityEdit() {
     setErrors((prev) => (prev[path] ? { ...prev, [path]: undefined } : prev));
   };
 
-  async function save() {
+  const save = async () => {
     setSaving(true);
     setErrors({});
     setMessage(null);
     try {
       const data = isNew
-        ? await post(`/admin/${manifest.key}`, form)
-        : await patch(`/admin/${manifest.key}/${id}`, form);
+        ? await post<RowResponse>(`/admin/${manifest.key}`, form)
+        : await patch<RowResponse>(`/admin/${manifest.key}/${id}`, form);
 
       setForm(data.row);
       baseline.current = JSON.stringify(data.row);
       setMessage({ tone: "ok", text: "Saved." });
 
-      if (isNew) navigate(`/admin/${manifest.key}/${data.row.id}`, { replace: true });
+      if (isNew) navigate(`/admin/${manifest.key}/${String(data.row.id)}`, { replace: true });
     } catch (err) {
       if (isUnauthorized(err)) return navigate("/admin/login", { replace: true });
 
@@ -273,9 +287,9 @@ export default function EntityEdit() {
     } finally {
       setSaving(false);
     }
-  }
+  };
 
-  async function remove() {
+  const remove = async () => {
     if (!window.confirm(`Delete ${heading}? Its links, blocks and roles go with it.`)) return;
 
     try {
@@ -291,9 +305,9 @@ export default function EntityEdit() {
             : "Couldn't delete that.",
       });
     }
-  }
+  };
 
-  const visible = (when) => !when || getPath(form, when.path) === when.value;
+  const visible = (when?: FieldCondition) => !when || getPath(form, when.path) === when.value;
 
   return (
     <div className="pb-24">
@@ -316,8 +330,8 @@ export default function EntityEdit() {
         !isNew && (
           <div className="mt-6 rounded-2xl border border-[#138ba0]/20 bg-white p-5">
             <p className="text-sm text-[#4a6b72]">
-              {manifest.idLabel} #{form.id}
-              {form.updated_at && <> · last saved {form.updated_at}</>}
+              {manifest.idLabel} #{String(form.id)}
+              {updatedAt && <> · last saved {updatedAt}</>}
             </p>
           </div>
         )
@@ -344,9 +358,9 @@ export default function EntityEdit() {
             change("id", `${prefixOf(form)}${slugify(value)}`);
           }}
         />
-        {!isNew && form.updated_at && (
+        {!isNew && updatedAt && (
           <p className="mt-2 text-xs text-[#4a6b72]">
-            Last saved {form.updated_at}
+            Last saved {updatedAt}
           </p>
         )}
       </div>
@@ -388,7 +402,7 @@ export default function EntityEdit() {
               <Repeater
                 key={child.key}
                 spec={child}
-                rows={form[child.key]}
+                rows={form[child.key] as AdminRow[] | undefined}
                 options={options}
                 errors={errors}
                 errorPrefix={`${child.key}.`}
diff --git a/src/pages/admin/EntityList.tsx b/src/pages/admin/EntityList.tsx
index b0b4197..59abf93 100644
--- a/src/pages/admin/EntityList.tsx
+++ b/src/pages/admin/EntityList.tsx
@@ -17,20 +17,25 @@ import { Link, useNavigate, useParams, useSearchParams } from "react-router-dom"
 
 import { get, ApiError } from "../../lib/api.js";
 import { isUnauthorized, useAuth } from "../../lib/auth.tsx";
-import { ADMIN_ENTITIES } from "../../lib/adminSchema.js";
+import {
+  ADMIN_ENTITIES,
+  type AdminOptions,
+  type AdminRow,
+  type ListFilter,
+} from "../../lib/adminSchema.js";
 import { atLeast } from "../../lib/roles.ts";
 
 export default function EntityList() {
   const { entity: entityKey } = useParams();
-  const manifest = ADMIN_ENTITIES[entityKey];
+  const manifest = entityKey ? ADMIN_ENTITIES[entityKey] : undefined;
   const navigate = useNavigate();
   const { user } = useAuth();
 
   const [params, setParams] = useSearchParams();
-  const [rows, setRows] = useState([]);
-  const [options, setOptions] = useState({});
+  const [rows, setRows] = useState<AdminRow[]>([]);
+  const [options, setOptions] = useState<AdminOptions>({});
   const [loading, setLoading] = useState(true);
-  const [error, setError] = useState(null);
+  const [error, setError] = useState<string | null>(null);
   const [query, setQuery] = useState(params.get("q") ?? "");
 
   // Minimum rank, never equality. POST /api/admin/:entity is gated
@@ -46,8 +51,8 @@ export default function EntityList() {
     setError(null);
     try {
       const [list, opts] = await Promise.all([
-        get(`/admin/${manifest.key}?${params}`, { ttl: 0 }),
-        get("/admin/options", { ttl: 60_000 }),
+        get<{ rows: AdminRow[]; total: number }>(`/admin/${manifest.key}?${params}`, { ttl: 0 }),
+        get<{ options: AdminOptions }>("/admin/options", { ttl: 60_000 }),
       ]);
       setRows(list.rows);
       setOptions(opts.options);
@@ -67,18 +72,18 @@ export default function EntityList() {
     return <p className="text-[#4a6b72]">No such thing to edit.</p>;
   }
 
-  function setParam(key, value) {
+  function setParam(key: string, value: string) {
     const next = new URLSearchParams(params);
     if (value) next.set(key, value);
     else next.delete(key);
     setParams(next, { replace: true });
   }
 
-  function labelFor(filter, value) {
+  function labelFor(filter: ListFilter): Array<readonly [string, string]> {
     if (filter.optionsFrom) {
-      return (options[filter.optionsFrom] ?? []).map((o) => [o.id, o.label]);
+      return (options[filter.optionsFrom] ?? []).map((o) => [o.id, o.label] as const);
     }
-    return filter.options.map((o) => (Array.isArray(o) ? o : [o, o]));
+    return (filter.options ?? []).map((o) => (typeof o === "string" ? [o, o] : o));
   }
 
   return (
@@ -159,7 +164,7 @@ export default function EntityList() {
           <tbody>
             {rows.map((row) => (
               <tr
-                key={row.id}
+                key={String(row.id)}
                 className="cursor-pointer border-b border-[#4a6b72]/10 last:border-0 hover:bg-[#f6fbfc]"
                 onClick={() => navigate(`/admin/${manifest.key}/${row.id}`)}
               >
@@ -174,10 +179,12 @@ export default function EntityList() {
                       ? row[column.key]
                         ? "Yes"
                         : "—"
-                      : row[column.key] || "—"}
+                      : row[column.key]
+                        ? String(row[column.key])
+                        : "—"}
                   </td>
                 ))}
-                <td className="px-4 py-3 font-mono text-xs text-[#4a6b72]">{row.id}</td>
+                <td className="px-4 py-3 font-mono text-xs text-[#4a6b72]">{String(row.id)}</td>
               </tr>
             ))}
           </tbody>
diff --git a/src/pages/admin/RequireRole.tsx b/src/pages/admin/RequireRole.tsx
index ef0395e..6f5f7ee 100644
--- a/src/pages/admin/RequireRole.tsx
+++ b/src/pages/admin/RequireRole.tsx
@@ -18,10 +18,10 @@
 
 import { Navigate, Outlet } from "react-router-dom";
 import { useAuth } from "../../lib/auth.tsx";
-import { atLeast } from "../../lib/roles.ts";
+import { atLeast, type Role } from "../../lib/roles.ts";
 import { ADMIN_HOME } from "./adminNav.js";
 
-export default function RequireRole({ role = "superadmin" }) {
+export default function RequireRole({ role = "superadmin" }: { role?: Role }) {
   const { user, loading } = useAuth();
 
   // RequireAuth is already showing its own placeholder above this.
diff --git a/src/pages/admin/adminNav.d.ts b/src/pages/admin/adminNav.d.ts
new file mode 100644
index 0000000..b5578f5
--- /dev/null
+++ b/src/pages/admin/adminNav.d.ts
@@ -0,0 +1,45 @@
+/* Types for adminNav.js. */
+
+import type { AdminUser } from "../../lib/auth.tsx";
+
+export declare const ADMIN_HOME: string;
+export declare const ADMIN_PANEL: string;
+
+export type AdminArea = "home" | "cms" | "panel";
+
+export declare const AREA_TITLES: Record<AdminArea, string>;
+
+export type AdminNavLink = {
+  to: string;
+  label: string;
+  /** Only read by the home cards. */
+  blurb?: string;
+};
+
+type AdminNavBase = {
+  label: string;
+  blurb?: string;
+  separated?: boolean;
+  superOnly?: boolean;
+};
+
+/** A tab. One with no `to` of its own opens its first child, so it
+ *  must have one. */
+export type AdminNavItem = AdminNavBase &
+  (
+    | { to: string; children?: AdminNavLink[] }
+    | { to?: undefined; children: [AdminNavLink, ...AdminNavLink[]] }
+  );
+
+export declare const CMS_NAV: AdminNavItem[];
+export declare const FORMS_NAV: AdminNavItem & { children: [AdminNavLink, ...AdminNavLink[]] };
+export declare const PANEL_NAV: AdminNavItem;
+export declare const NAV: AdminNavItem[];
+
+export declare function navFor(user: AdminUser | null | undefined): AdminNavItem[];
+
+export declare const matches: (pathname: string, to: string | null | undefined) => boolean;
+
+export declare const target: (item: AdminNavItem) => string;
+
+export declare function areaFor(pathname: string): AdminArea;
diff --git a/src/pages/sections/EventList-Cards.tsx b/src/pages/sections/EventList-Cards.tsx
index d797bab..9e159f2 100644
--- a/src/pages/sections/EventList-Cards.tsx
+++ b/src/pages/sections/EventList-Cards.tsx
@@ -1,8 +1,15 @@
-import { useEffect, useMemo, useRef, useState } from "react";
+import { useEffect, useMemo, useRef, useState, type ReactNode } from "react";
 import { Link } from "react-router-dom";
-import { splitByStatus, typesPresent, useEvents } from "../../data/eventData.js";
+import {
+  splitByStatus,
+  typesPresent,
+  useEvents,
+  type EventFilter,
+} from "../../data/eventData.js";
 import { eventHref } from "../../lib/hrefs.ts";
-import { EVENT_TYPES, eventTypeLabel } from "../../lib/eventTypes.ts";
+import { EVENT_TYPES, eventTypeLabel, type EventType } from "../../lib/eventTypes.ts";
+import type { EventListItem } from "../../lib/useContent.ts";
+import type { SectionToggleProps } from "../../lib/sections.tsx";
 
 /* ═══════════════════════════════════════════════════════════════
    EVENT LIST — CARDS
@@ -24,7 +31,7 @@ import { EVENT_TYPES, eventTypeLabel } from "../../lib/eventTypes.ts";
    nothing but retreats shows no control at all.
    ═══════════════════════════════════════════════════════════════ */
 
-const LOGO_FILES = import.meta.glob("../../assets/event-logos/*.svg", {
+const LOGO_FILES = import.meta.glob<string>("../../assets/event-logos/*.svg", {
   eager: true,
   import: "default",
 });
@@ -33,7 +40,7 @@ const LOGOS = Object.fromEntries(
   Object.entries(LOGO_FILES).map(([path, src]) => [path.split("/").pop(), src])
 );
 
-const logoSrc = file => (file && LOGOS[file]) || null;
+const logoSrc = (file: string | null | undefined) => (file && LOGOS[file]) || null;
 
 /* Last resort only. The API already falls back to the host
    organization's logo when an event doesn't name its own, so this
@@ -41,7 +48,15 @@ const logoSrc = file => (file && LOGOS[file]) || null;
 const DEFAULT_ORG_LOGO = null;
 
 /* An <img> that removes itself if the file 404s. */
-function Logo({ file, alt = "", className }) {
+function Logo({
+  file,
+  alt = "",
+  className,
+}: {
+  file: string | null | undefined;
+  alt?: string;
+  className?: string;
+}) {
   const [failed, setFailed] = useState(false);
   const src = logoSrc(file);
   if (!src || failed) return null;
@@ -122,7 +137,15 @@ const InstagramIcon = ({ id = "ig-gradient" }) => (
    carousel has the same constraint — it needs the card's click to
    mean "bring this one to the front" on anything that isn't the
    active slide. */
-function TitleLink({ ev, linked, children }) {
+function TitleLink({
+  ev,
+  linked,
+  children,
+}: {
+  ev: Pick<EventListItem, "id">;
+  linked: boolean;
+  children: ReactNode;
+}) {
   if (!linked) return <>{children}</>;
   return (
     <Link to={eventHref(ev.id)} className="hover:underline underline-offset-4">
@@ -149,6 +172,16 @@ function TitleLink({ ev, linked, children }) {
    `linked` is the one thing a caller turns off: a card on the
    event's own page shouldn't link to the page it's already on.
    ═══════════════════════════════════════════════════════════════ */
+type CardProps = {
+  ev: EventListItem;
+  defaultColor?: string;
+  accent?: string;
+  compact?: boolean;
+  interactive?: boolean;
+  linked?: boolean;
+  showType?: boolean;
+};
+
 export function Card({
   ev,
   defaultColor = TEAL,
@@ -157,7 +190,7 @@ export function Card({
   interactive = true,
   linked = true,
   showType = false,
-}) {
+}: CardProps) {
   const past = ev.status === "past";
   const color = ev.color || defaultColor;
   const orgLogo = ev.org_logo || DEFAULT_ORG_LOGO;
@@ -353,14 +386,23 @@ export function Card({
    them visible is one tap, and the row reads as what the section
    contains rather than as a form control.
    ═══════════════════════════════════════════════════════════════ */
-export function TypeFilter({ types, active, setActive, accent }) {
-  const chip = on => ({
+type TypeFilterValue = EventType | "all";
+
+type TypeFilterProps = {
+  types: typeof EVENT_TYPES;
+  active: TypeFilterValue;
+  setActive: (id: TypeFilterValue) => void;
+  accent: string;
+};
+
+export function TypeFilter({ types, active, setActive, accent }: TypeFilterProps) {
+  const chip = (on: boolean) => ({
     border: `1px solid ${accent}`,
     background: on ? accent : "transparent",
     color: on ? "#ffffff" : accent,
   });
 
-  const button = (id, label) => (
+  const button = (id: TypeFilterValue, label: string) => (
     <button
       key={id}
       onClick={() => setActive(id)}
@@ -388,8 +430,12 @@ export function TypeFilter({ types, active, setActive, accent }) {
 /* ═══════════════════════════════════════════════════════════════
    TOGGLE — the control for the section heading's action bar
    ═══════════════════════════════════════════════════════════════ */
-export function EventCardsToggle({ view, setView, accent }) {
-  const btn = active => ({
+export function EventCardsToggle({
+  view,
+  setView,
+  accent,
+}: Pick<SectionToggleProps, "view" | "setView" | "accent">) {
+  const btn = (active: boolean) => ({
     background: active ? accent : "transparent",
     color: active ? "#ffffff" : accent,
   });
@@ -441,6 +487,14 @@ export function EventCardsToggle({ view, setView, accent }) {
    differently to someone waiting, so they're distinguished rather
    than all falling through to "coming soon".
    ═══════════════════════════════════════════════════════════════ */
+type EventListCardsProps = EventFilter & {
+  /** "carousel" or "grid". */
+  view?: string;
+  accent?: string;
+  defaultColor?: string;
+  empty?: string;
+};
+
 export default function EventListCards({
   section,
   host,
@@ -450,7 +504,7 @@ export default function EventListCards({
   accent = TEAL,
   defaultColor,
   empty = "· Events coming soon, stay connected for announcements ·",
-}) {
+}: EventListCardsProps) {
   const { events: fetched, loading, error } = useEvents({
     section,
     host,
@@ -461,7 +515,7 @@ export default function EventListCards({
 
   const [index, setIndex] = useState(0);
   const [showPast, setShowPast] = useState(false);
-  const [activeType, setActiveType] = useState("all");
+  const [activeType, setActiveType] = useState<TypeFilterValue>("all");
 
   /* What this band holds, which is what the chips offer — not the
      full list of declared types, three quarters of which would be
@@ -515,7 +569,7 @@ export default function EventListCards({
   const next = () => setIndex(i => Math.min(events.length - 1, i + 1));
 
   // Arrows and dots follow the section accent, not the active card.
-  const arrowStyle = enabled => ({
+  const arrowStyle = (enabled: boolean) => ({
     border: `1px solid ${accent}`,
     background: "rgba(255,255,255,0.85)",
     color: enabled ? accent : "#b8c6c9",
@@ -523,7 +577,7 @@ export default function EventListCards({
     opacity: enabled ? 1 : 0.4,
   });
 
-  const notice = text => (
+  const notice = (text: string) => (
     <p className="max-w-6xl mx-auto px-6 font-600" style={{ color: accent }}>
       {text}
     </p>
diff --git a/src/pages/sections/FeedbackForm.tsx b/src/pages/sections/FeedbackForm.tsx
index 2f6a4b5..f0549e4 100644
--- a/src/pages/sections/FeedbackForm.tsx
+++ b/src/pages/sections/FeedbackForm.tsx
@@ -11,7 +11,7 @@
    page to the nav adds it to this form too.
    ═══════════════════════════════════════════════════════════════ */
 
-import { useState } from "react";
+import { useState, type FormEvent, type ReactNode } from "react";
 import { post, ApiError } from "../../lib/api.js";
 import { PAGE_LINKS, PAGE_SECTIONS } from "../../navConfig.js";
 import { FEEDBACK_TYPES } from "../../data/feedbackTypes.js";
@@ -46,7 +46,7 @@ function OptionalTag() {
   );
 }
 
-function FieldError({ id, children }) {
+function FieldError({ id, children }: { id: string; children?: ReactNode }) {
   if (!children) return null;
   return (
     <p id={id} className="mt-2 text-sm text-[#b3261e]">
@@ -56,7 +56,15 @@ function FieldError({ id, children }) {
 }
 
 // Native select plus a chevron, since appearance-none strips the default one.
-function Select({ id, label, value, onChange, children }) {
+type SelectProps = {
+  id: string;
+  label: string;
+  value: string;
+  onChange: (value: string) => void;
+  children: ReactNode;
+};
+
+function Select({ id, label, value, onChange, children }: SelectProps) {
   return (
     <div>
       <label htmlFor={id} className="block text-sm font-medium text-[#26454c]">
@@ -93,7 +101,13 @@ function Select({ id, label, value, onChange, children }) {
 
 /* ── Type picker ─────────────────────────────────────────────── */
 
-function TypePicker({ value, onChange }) {
+function TypePicker({
+  value,
+  onChange,
+}: {
+  value: string | null;
+  onChange: (id: string) => void;
+}) {
   return (
     <fieldset>
       <legend className="text-base font-semibold text-[#26454c]">
@@ -151,7 +165,16 @@ function TypePicker({ value, onChange }) {
 
 /* ── Where on the site ───────────────────────────────────────── */
 
-function LocationPicker({ page, section, onPageChange, onSectionChange }) {
+type LocationPickerProps = {
+  /** A nav path, or SITE_WIDE. */
+  page: string;
+  /** A nav hash, or WHOLE_PAGE. */
+  section: string;
+  onPageChange: (page: string) => void;
+  onSectionChange: (section: string) => void;
+};
+
+function LocationPicker({ page, section, onPageChange, onSectionChange }: LocationPickerProps) {
   const sections = page === SITE_WIDE ? [] : PAGE_SECTIONS[page] ?? [];
 
   return (
@@ -205,7 +228,7 @@ function LocationPicker({ page, section, onPageChange, onSectionChange }) {
 }
 
 // Human-readable version of the picked location, for the thank-you panel.
-function describeLocation(page, section) {
+function describeLocation(page: string, section: string) {
   if (page === SITE_WIDE) return null;
   const pageLabel = PAGE_LINKS.find((p) => p.path === page)?.label ?? page;
   const sectionLabel = (PAGE_SECTIONS[page] ?? []).find(
@@ -216,8 +239,11 @@ function describeLocation(page, section) {
 
 /* ── The form ────────────────────────────────────────────────── */
 
+/* The fields server/src/routes/feedback.js can reject by name. */
+type FeedbackFieldErrors = { message?: string; email?: string };
+
 export default function FeedbackForm() {
-  const [type, setType] = useState(null);
+  const [type, setType] = useState<string | null>(null);
   const [page, setPage] = useState(SITE_WIDE);
   const [section, setSection] = useState(WHOLE_PAGE);
   const [message, setMessage] = useState("");
@@ -228,14 +254,14 @@ export default function FeedbackForm() {
   const [website, setWebsite] = useState("");
 
   // idle → sending → sent, or back to idle with an error to show.
-  const [status, setStatus] = useState("idle");
-  const [formError, setFormError] = useState(null);
-  const [fieldErrors, setFieldErrors] = useState({});
+  const [status, setStatus] = useState<"idle" | "sending" | "sent">("idle");
+  const [formError, setFormError] = useState<string | null>(null);
+  const [fieldErrors, setFieldErrors] = useState<FeedbackFieldErrors>({});
 
   const sending = status === "sending";
   const ready = Boolean(type) && message.trim().length >= MIN_MESSAGE;
 
-  async function handleSubmit(event) {
+  async function handleSubmit(event: FormEvent<HTMLFormElement>) {
     event.preventDefault();
     if (!ready || sending) return;
 
diff --git a/src/pages/sections/OrgList-Card.tsx b/src/pages/sections/OrgList-Card.tsx
index 489db48..51efe10 100644
--- a/src/pages/sections/OrgList-Card.tsx
+++ b/src/pages/sections/OrgList-Card.tsx
@@ -1,5 +1,7 @@
-import { useState } from "react";
+import { useState, type ReactNode } from "react";
 import ArrowLink from "../../components/ArrowLink.tsx";
+import type { OrgKind } from "../../lib/hrefs.ts";
+import type { OrganizationListItem } from "../../lib/useContent.ts";
 import {
   initialsFor,
   orgPath,
@@ -33,7 +35,13 @@ const FALLBACK_COLOR = "#4a6b72";
 const CARD_MIN = "20rem";
 const GRID_MAX = "88rem";
 
-function OrgMark({ org, color }) {
+function OrgMark({
+  org,
+  color,
+}: {
+  org: Pick<OrganizationListItem, "logo" | "name">;
+  color: string;
+}) {
   const [failed, setFailed] = useState(false);
 
   if (org.logo && !failed) {
@@ -58,7 +66,14 @@ function OrgMark({ org, color }) {
   );
 }
 
-function OrgCard({ org, accent, pageLabel, siteLabel }) {
+type CardLabels = { accent: string; pageLabel: string; siteLabel: string };
+
+function OrgCard({
+  org,
+  accent,
+  pageLabel,
+  siteLabel,
+}: CardLabels & { org: OrganizationListItem }) {
   const color = org.color || accent;
   const path = orgPath(org);
 
@@ -136,7 +151,13 @@ function OrgCard({ org, accent, pageLabel, siteLabel }) {
   );
 }
 
-function Block({ title, orgs, accent, pageLabel, siteLabel }) {
+function Block({
+  title,
+  orgs,
+  accent,
+  pageLabel,
+  siteLabel,
+}: CardLabels & { title?: string; orgs: OrganizationListItem[] }) {
   if (orgs.length === 0) return null;
 
   return (
@@ -167,7 +188,30 @@ function Block({ title, orgs, accent, pageLabel, siteLabel }) {
   );
 }
 
-const byName = (a, b) => a.name.localeCompare(b.name);
+const byName = (a: OrganizationListItem, b: OrganizationListItem) =>
+  a.name.localeCompare(b.name);
+
+/* One heading's worth of the grid. Labels override the grid's own. */
+type OrgGroup = {
+  key: string;
+  title: string;
+  pageLabel?: string;
+  siteLabel?: string;
+};
+
+type OrgListCardsProps = {
+  kind?: OrgKind;
+  title?: string;
+  groups?: OrgGroup[];
+  /** Which group key an organization files under. */
+  groupBy?: (org: OrganizationListItem) => string | null | undefined;
+  accent?: string;
+  pageLabel?: string;
+  siteLabel?: string;
+  /** Null keeps the API's order. */
+  sort?: ((a: OrganizationListItem, b: OrganizationListItem) => number) | null;
+  empty?: string;
+};
 
 export default function OrgListCards({
   kind,
@@ -179,10 +223,10 @@ export default function OrgListCards({
   siteLabel = "Visit site",
   sort = byName,
   empty = "· Nothing to show here just yet ·",
-}) {
+}: OrgListCardsProps) {
   const { organizations, loading, error } = useOrganizations(kind);
 
-  const shell = children => (
+  const shell = (children: ReactNode) => (
     <div className="mx-auto px-8 md:px-12" style={{ maxWidth: GRID_MAX }}>
       {children}
     </div>
diff --git a/src/pages/sections/OrgList-Map.tsx b/src/pages/sections/OrgList-Map.tsx
index 52a928c..faf48b1 100644
--- a/src/pages/sections/OrgList-Map.tsx
+++ b/src/pages/sections/OrgList-Map.tsx
@@ -1,9 +1,16 @@
-import { useEffect, useRef, useState } from "react";
-import { useCommunity } from "../../data/chapters.js";
+import { useEffect, useRef, useState, type ReactNode, type RefObject } from "react";
+import {
+  useCommunity,
+  type Chapter,
+  type Community,
+  type Region,
+} from "../../data/chapters.js";
 import { Link } from "react-router-dom";
 import ArrowLink from "../../components/ArrowLink.tsx";
 import { initialsFor, orgPath } from "../../data/organizations.js";
-import { AREAS, AREA_NAMES } from "../../data/mapGrid.js";
+import { AREAS, AREA_NAMES, type AreaSlice } from "../../data/mapGrid.js";
+import type { SectionToggleProps } from "../../lib/sections.tsx";
+import type { ContentBlock, OrganizationListItem } from "../../lib/useContent.ts";
 
 /* ═══════════════════════════════════════════════════════════════
    ORGANIZATION LIST — MAP
@@ -46,6 +53,19 @@ const RULE = "#cfe3e7";
 const INK = "#2c4a50";
 const FALLBACK_COLOR = "#4a6b72";
 
+/* organizations.color is nullable; an SVG fill left undefined paints
+   black, so an uncoloured region takes the same fallback as a card. */
+const colorOf = (item: { color?: string | null }) => item.color || FALLBACK_COLOR;
+
+/* Which region is picked and which is under the pointer, shared by
+   the map, the legend and the list. */
+type Highlight = {
+  selected: string | null;
+  hovered: string | null;
+  setSelected: (id: string | null) => void;
+  setHovered: (id: string | null) => void;
+};
+
 const US_TITLE = "US Unity Regions";
 const INTL_TITLE = "International Unity Regions";
 
@@ -55,7 +75,7 @@ const INTL_TITLE = "International Unity Regions";
    vanishing. When organization and person pages arrive this should
    move to a shared component; small enough to live here until then.
    ───────────────────────────────────────────────────────────── */
-function Blocks({ blocks = [], color }) {
+function Blocks({ blocks = [], color }: { blocks?: ContentBlock[]; color: string }) {
   if (blocks.length === 0) return null;
 
   return (
@@ -88,7 +108,7 @@ function Blocks({ blocks = [], color }) {
           case "links":
             return (
               <ul key={i} className="list-disc ml-5 flex flex-col gap-1">
-                {block.items.map((item, j) => (
+                {(block.items ?? []).map((item, j) => (
                   <li key={j}>
                     {item.url ? (
                       <a
@@ -134,6 +154,19 @@ function Blocks({ blocks = [], color }) {
    subtracts, and the order the slices arrive in doesn't change
    what's drawn.
    ───────────────────────────────────────────────────────────── */
+type TileProps = Highlight & {
+  code: string;
+  x: number;
+  y: number;
+  size: number;
+  width?: number;
+  label?: string;
+  slices?: AreaSlice[];
+  count?: number;
+  onPick?: (code: string) => void;
+  fontSize?: number;
+};
+
 function Tile({
   code,
   x,
@@ -149,11 +182,12 @@ function Tile({
   setHovered,
   onPick,
   fontSize = 34,
-}) {
+}: TileProps) {
   if (slices.length === 0) return null;
 
   const primary = slices[0];
-  const ids = slices.map(s => s.regionId);
+  // Nullable so indexOf and includes take `selected` as it is.
+  const ids: Array<string | null> = slices.map(s => s.regionId);
   const active = ids.includes(selected) || ids.includes(hovered);
   const dimmed = selected && !ids.includes(selected);
   const clipId = `clip-${code}`;
@@ -196,7 +230,7 @@ function Tile({
               y={top}
               width={width}
               height={h}
-              fill={slice.color}
+              fill={colorOf(slice)}
               fillOpacity={opacity}
               className="transition-all duration-200"
             />
@@ -211,7 +245,7 @@ function Tile({
         height={size}
         rx={14}
         fill="none"
-        stroke={active ? primary.color : "#ffffff"}
+        stroke={active ? colorOf(primary) : "#ffffff"}
         strokeOpacity={active ? 1 : 0.55}
         strokeWidth={active ? 4 : 2}
         className="transition-all duration-200"
@@ -224,7 +258,7 @@ function Tile({
         dominantBaseline="middle"
         fontSize={fontSize}
         fontWeight="800"
-        fill={count ? "#ffffff" : primary.color}
+        fill={count ? "#ffffff" : colorOf(primary)}
         style={{ pointerEvents: "none" }}
       >
         {label || code}
@@ -244,7 +278,13 @@ function Tile({
   );
 }
 
-function RegionMap({ slices, chapterCounts, ...props }) {
+type RegionMapProps = Highlight & {
+  slices: Record<string, AreaSlice[]>;
+  chapterCounts: Record<string, number>;
+  onPick?: (code: string) => void;
+};
+
+function RegionMap({ slices, chapterCounts, ...props }: RegionMapProps) {
   const size = TILE - PAD * 2;
 
   return (
@@ -275,8 +315,15 @@ function RegionMap({ slices, chapterCounts, ...props }) {
   );
 }
 
-function LegendButton({ region, selected, setSelected, hovered, setHovered }) {
+function LegendButton({
+  region,
+  selected,
+  setSelected,
+  hovered,
+  setHovered,
+}: Highlight & { region: Region }) {
   const on = selected === region.id || hovered === region.id;
+  const color = colorOf(region);
   return (
     <button
       onClick={() => setSelected(selected === region.id ? null : region.id)}
@@ -287,29 +334,36 @@ function LegendButton({ region, selected, setSelected, hovered, setHovered }) {
       aria-pressed={selected === region.id}
       className="flex items-center gap-2 py-1.5 px-3 rounded-lg text-sm font-700 transition-all duration-200"
       style={{
-        border: `1px solid ${region.color}`,
-        background: on ? region.color : "transparent",
-        color: on ? "#ffffff" : region.color,
+        border: `1px solid ${color}`,
+        background: on ? color : "transparent",
+        color: on ? "#ffffff" : color,
         opacity: selected && selected !== region.id ? 0.45 : 1,
       }}
     >
       <span
         className="h-2.5 w-2.5 rounded-full"
-        style={{ background: on ? "#ffffff" : region.color }}
+        style={{ background: on ? "#ffffff" : color }}
       />
       {region.name}
     </button>
   );
 }
 
-function Legend({ domestic, international, onMapIds, ...props }) {
+type LegendProps = Highlight & {
+  domestic: Region[];
+  international: Region[];
+  /** Regions that paint at least one tile. */
+  onMapIds: Set<string>;
+};
+
+function Legend({ domestic, international, onMapIds, ...props }: LegendProps) {
   const { selected, setSelected } = props;
 
   // A region is on the map if it paints a tile. West Central used
   // to need a hardcoded exception here because its states arrived
   // only through SPLITS; it has ordinary rows now, so the exception
   // is gone.
-  const onMap = region => onMapIds.has(region.id);
+  const onMap = (region: Region) => onMapIds.has(region.id);
   const us = domestic.filter(onMap);
   const intl = international.filter(onMap);
 
@@ -347,6 +401,15 @@ function Legend({ domestic, international, onMapIds, ...props }) {
   );
 }
 
+type RegionBlockProps = Highlight & {
+  region: Region;
+  chapters: Chapter[];
+  subtext: string;
+  indent: boolean;
+  regionRefs?: RefObject<Record<string, HTMLDivElement | null>>;
+  chapterRefs?: RefObject<Record<string, HTMLLIElement | null>>;
+};
+
 function RegionBlock({
   region,
   chapters,
@@ -357,12 +420,15 @@ function RegionBlock({
   indent,
   regionRefs,
   chapterRefs,
-}) {
+}: RegionBlockProps) {
   const on = selected === region.id;
+  const color = colorOf(region);
 
   return (
     <div
-      ref={el => regionRefs && (regionRefs.current[region.id] = el)}
+      ref={el => {
+        if (regionRefs) regionRefs.current[region.id] = el;
+      }}
       className="transition-opacity duration-200"
       style={{ opacity: selected && !on ? 0.35 : 1, marginLeft: indent ? "0.75rem" : 0 }}
     >
@@ -374,11 +440,11 @@ function RegionBlock({
       >
         <span
           className="h-3 w-3 rounded-full shrink-0"
-          style={{ background: region.color }}
+          style={{ background: color }}
         />
         <h4
           className={`font-800 ${indent ? "text-lg" : "text-xl"}`}
-          style={{ color: region.color }}
+          style={{ color: color }}
         >
           {region.name}
         </h4>
@@ -399,55 +465,60 @@ function RegionBlock({
         </p>
       ) : (
         <ul className="ml-5 mb-4 flex flex-col gap-3">
-          {chapters.map(c => (
-            <li
-              key={c.id}
-              ref={el => chapterRefs && (chapterRefs.current[c.id] = el)}
-              className="pl-3 flex items-start gap-3"
-              style={{ borderLeft: `2px solid ${region.color}` }}
-            >
-              <div className="min-w-0 flex-1">
-                <p className="font-700">{c.name}</p>
-                <p className="text-sm" style={{ color: FALLBACK_COLOR }}>
-                  {c.location_label}
-                  {c.meets ? ` · ${c.meets}` : ""}
-                </p>
-                {(c.website || c.email) && (
-                  <p className="text-sm mt-1 flex gap-4">
-                    {c.website && (
-                      <a
-                        href={c.website}
-                        target="_blank"
-                        rel="noopener noreferrer"
-                        className="font-700 underline"
-                        style={{ color: region.color }}
-                      >
-                        Details
-                      </a>
-                    )}
-                    {c.email && (
-                      <a
-                        href={`mailto:${c.email}`}
-                        className="font-700 underline"
-                        style={{ color: region.color }}
-                      >
-                        Contact
-                      </a>
-                    )}
+          {chapters.map(c => {
+            const path = orgPath(c);
+            return (
+              <li
+                key={c.id}
+                ref={el => {
+                  if (chapterRefs) chapterRefs.current[c.id] = el;
+                }}
+                className="pl-3 flex items-start gap-3"
+                style={{ borderLeft: `2px solid ${color}` }}
+              >
+                <div className="min-w-0 flex-1">
+                  <p className="font-700">{c.name}</p>
+                  <p className="text-sm" style={{ color: FALLBACK_COLOR }}>
+                    {c.location_label}
+                    {c.meets ? ` · ${c.meets}` : ""}
                   </p>
-                )}
-              </div>
+                  {(c.website || c.email) && (
+                    <p className="text-sm mt-1 flex gap-4">
+                      {c.website && (
+                        <a
+                          href={c.website}
+                          target="_blank"
+                          rel="noopener noreferrer"
+                          className="font-700 underline"
+                          style={{ color: color }}
+                        >
+                          Details
+                        </a>
+                      )}
+                      {c.email && (
+                        <a
+                          href={`mailto:${c.email}`}
+                          className="font-700 underline"
+                          style={{ color: color }}
+                        >
+                          Contact
+                        </a>
+                      )}
+                    </p>
+                  )}
+                </div>
 
-              {orgPath(c) && (
-                <ArrowLink
-                  to={orgPath(c)}
-                  label={`${c.name} — chapter page`}
-                  color={region.color}
-                  size="h-8 w-8"
-                />
-              )}
-            </li>
-          ))}
+                {path && (
+                  <ArrowLink
+                    to={path}
+                    label={`${c.name} — chapter page`}
+                    color={color}
+                    size="h-8 w-8"
+                  />
+                )}
+              </li>
+            );
+          })}
         </ul>
       )}
     </div>
@@ -462,7 +533,15 @@ function RegionBlock({
    ═══════════════════════════════════════════════════════════════ */
 
 /* Logo, or the organization's initials when there's no file. */
-function OrgLogo({ org, color, size = "h-14 w-14" }) {
+function OrgLogo({
+  org,
+  color,
+  size = "h-14 w-14",
+}: {
+  org: Pick<OrganizationListItem, "logo" | "name">;
+  color: string;
+  size?: string;
+}) {
   const [failed, setFailed] = useState(false);
 
   if (org.logo && !failed) {
@@ -487,7 +566,16 @@ function OrgLogo({ org, color, size = "h-14 w-14" }) {
   );
 }
 
-function ChapterCard({ chapter, color, open, onOpen }) {
+type ChapterCardProps = {
+  chapter: Chapter;
+  color: string;
+  open: boolean;
+  onOpen: () => void;
+};
+
+function ChapterCard({ chapter, color, open, onOpen }: ChapterCardProps) {
+  const path = orgPath(chapter);
+
   return (
     <div
       className="rounded-2xl p-4 flex items-start gap-4 transition-all duration-200"
@@ -539,9 +627,9 @@ function ChapterCard({ chapter, color, open, onOpen }) {
           </svg>
         </button>
 
-        {orgPath(chapter) && (
+        {path && (
           <ArrowLink
-            to={orgPath(chapter)}
+            to={path}
             label={`${chapter.name} — chapter page`}
             color={color}
           />
@@ -551,7 +639,18 @@ function ChapterCard({ chapter, color, open, onOpen }) {
   );
 }
 
-function ChapterDetail({ chapter, region, onClose }) {
+function ChapterDetail({
+  chapter,
+  region,
+  onClose,
+}: {
+  chapter: Chapter;
+  region: Region;
+  onClose: () => void;
+}) {
+  const path = orgPath(chapter);
+  const color = colorOf(region);
+
   /* "Led by" comes from affiliations rather than a text field, so
      it lists real people and stays empty until they exist. */
   const leads = (chapter.leadership ?? [])
@@ -560,21 +659,23 @@ function ChapterDetail({ chapter, region, onClose }) {
     )
     .join(", ");
 
-  const rows = [
-    ["Region", region.name],
-    ["Where", chapter.venue],
-    ["Meets", chapter.meets],
-    ["Led by", leads],
-    ["Since", chapter.started],
-  ].filter(([, v]) => v);
+  const rows = (
+    [
+      ["Region", region.name],
+      ["Where", chapter.venue],
+      ["Meets", chapter.meets],
+      ["Led by", leads],
+      ["Since", chapter.started],
+    ] satisfies Array<[label: string, value: string | null | undefined]>
+  ).filter(([, v]) => v);
 
   return (
     <div
       className="rounded-2xl p-6 mb-6"
-      style={{ border: `2px solid ${region.color}`, background: `${region.color}0f` }}
+      style={{ border: `2px solid ${color}`, background: `${color}0f` }}
     >
       <div className="flex items-start gap-4">
-        <OrgLogo org={chapter} color={region.color} size="h-20 w-20" />
+        <OrgLogo org={chapter} color={color} size="h-20 w-20" />
 
         <div className="min-w-0 flex-1">
           <p className="text-2xl font-900 leading-tight">{chapter.name}</p>
@@ -585,13 +686,13 @@ function ChapterDetail({ chapter, region, onClose }) {
           onClick={onClose}
           aria-label="Close details"
           className="shrink-0 h-8 w-8 rounded-full flex items-center justify-center text-lg font-700 transition-transform duration-200 hover:scale-110"
-          style={{ border: `1px solid ${region.color}`, color: region.color }}
+          style={{ border: `1px solid ${color}`, color: color }}
         >
           ×
         </button>
       </div>
 
-      <Blocks blocks={chapter.blocks} color={region.color} />
+      <Blocks blocks={chapter.blocks} color={color} />
 
       {rows.length > 0 && (
         <dl className="mt-4 grid grid-cols-1 sm:grid-cols-2 gap-x-8 gap-y-1 text-sm">
@@ -609,11 +710,11 @@ function ChapterDetail({ chapter, region, onClose }) {
       )}
 
       <div className="mt-5 flex flex-wrap gap-3">
-        {orgPath(chapter) && (
+        {path && (
           <Link
-            to={orgPath(chapter)}
+            to={path}
             className="py-2 px-5 rounded-xl font-700 text-sm transition-transform duration-200 hover:scale-105"
-            style={{ background: region.color, color: "#ffffff" }}
+            style={{ background: color, color: "#ffffff" }}
           >
             Chapter page
           </Link>
@@ -624,7 +725,7 @@ function ChapterDetail({ chapter, region, onClose }) {
             target="_blank"
             rel="noopener noreferrer"
             className="py-2 px-5 rounded-xl font-700 text-sm transition-transform duration-200 hover:scale-105"
-            style={{ border: `1px solid ${region.color}`, color: region.color }}
+            style={{ border: `1px solid ${color}`, color: color }}
           >
             Visit site
           </a>
@@ -634,7 +735,7 @@ function ChapterDetail({ chapter, region, onClose }) {
           <a
             href={`mailto:${chapter.email}`}
             className="py-2 px-5 rounded-xl font-700 text-sm transition-transform duration-200 hover:scale-105"
-            style={{ border: `1px solid ${region.color}`, color: region.color }}
+            style={{ border: `1px solid ${color}`, color: color }}
           >
             Get in touch
           </a>
@@ -644,7 +745,19 @@ function ChapterDetail({ chapter, region, onClose }) {
   );
 }
 
-function ChapterGrid({ regions, chapters, chaptersIn, subtextFor, openId, setOpenId }) {
+type ChapterGridProps = Pick<Community, "regions" | "chapters" | "chaptersIn" | "subtextFor"> & {
+  openId: string | null;
+  setOpenId: (id: string | null) => void;
+};
+
+function ChapterGrid({
+  regions,
+  chapters,
+  chaptersIn,
+  subtextFor,
+  openId,
+  setOpenId,
+}: ChapterGridProps) {
   // Only regions that actually have chapters get a grid.
   const populated = regions
     .map(region => ({ region, list: chaptersIn(region.id) }))
@@ -656,14 +769,15 @@ function ChapterGrid({ regions, chapters, chaptersIn, subtextFor, openId, setOpe
     <div className="mx-auto px-8 md:px-12" style={{ maxWidth: CONTENT_MAX }}>
       {populated.map(({ region, list }) => {
         const subtext = subtextFor(region);
+        const color = colorOf(region);
         return (
           <section key={region.id} className="mb-12">
             <div className="flex items-baseline gap-3 mb-1">
               <span
                 className="h-3 w-3 rounded-full shrink-0"
-                style={{ background: region.color }}
+                style={{ background: color }}
               />
-              <h3 className="text-2xl font-800" style={{ color: region.color }}>
+              <h3 className="text-2xl font-800" style={{ color: color }}>
                 {region.name}
               </h3>
               <span className="text-sm" style={{ color: MUTED }}>
@@ -696,7 +810,7 @@ function ChapterGrid({ regions, chapters, chaptersIn, subtextFor, openId, setOpe
                 <ChapterCard
                   key={c.id}
                   chapter={c}
-                  color={region.color}
+                  color={color}
                   open={openId === c.id}
                   onOpen={() => setOpenId(openId === c.id ? null : c.id)}
                 />
@@ -717,8 +831,12 @@ function ChapterGrid({ regions, chapters, chaptersIn, subtextFor, openId, setOpe
 }
 
 /* The control for the section heading's action bar. */
-export function OrgMapToggle({ view, setView, accent }) {
-  const btn = active => ({
+export function OrgMapToggle({
+  view,
+  setView,
+  accent,
+}: Pick<SectionToggleProps, "view" | "setView" | "accent">) {
+  const btn = (active: boolean) => ({
     background: active ? accent : "transparent",
     color: active ? "#ffffff" : accent,
   });
@@ -748,7 +866,14 @@ export function OrgMapToggle({ view, setView, accent }) {
   );
 }
 
-export default function OrgListMap({ view = "map", accent = FALLBACK_COLOR }) {
+export default function OrgListMap({
+  view = "map",
+  accent = FALLBACK_COLOR,
+}: {
+  /** "map" or "grid". */
+  view?: string;
+  accent?: string;
+}) {
   const {
     loading,
     error,
@@ -765,16 +890,16 @@ export default function OrgListMap({ view = "map", accent = FALLBACK_COLOR }) {
     subtextFor,
   } = useCommunity();
 
-  const [selected, setSelected] = useState(null);
-  const [hovered, setHovered] = useState(null);
-  const [openId, setOpenId] = useState(null); // no card open on arrival
+  const [selected, setSelected] = useState<string | null>(null);
+  const [hovered, setHovered] = useState<string | null>(null);
+  const [openId, setOpenId] = useState<string | null>(null); // no card open on arrival
 
   // The list scrolls itself to whatever the map or legend points at.
-  const listRef = useRef(null);
-  const regionRefs = useRef({});
-  const chapterRefs = useRef({});
+  const listRef = useRef<HTMLDivElement>(null);
+  const regionRefs = useRef<Record<string, HTMLDivElement | null>>({});
+  const chapterRefs = useRef<Record<string, HTMLLIElement | null>>({});
 
-  const scrollListTo = el => {
+  const scrollListTo = (el: HTMLElement | null | undefined) => {
     const box = listRef.current;
     if (!box || !el) return;
     // Only when the list is its own scroll area (lg and up). Below
@@ -792,7 +917,7 @@ export default function OrgListMap({ view = "map", accent = FALLBACK_COLOR }) {
 
   // Clicking a tile jumps to its first chapter when it has one,
   // otherwise to the region it belongs to.
-  const pickArea = code => {
+  const pickArea = (code: string) => {
     const chapter = chapters.find(c => c.area_code === code);
     if (chapter && chapterRefs.current[chapter.id]) {
       return scrollListTo(chapterRefs.current[chapter.id]);
@@ -801,7 +926,7 @@ export default function OrgListMap({ view = "map", accent = FALLBACK_COLOR }) {
     if (region) scrollListTo(regionRefs.current[region.id]);
   };
 
-  const shell = children => (
+  const shell = (children: ReactNode) => (
     <div className="mx-auto px-8 md:px-12" style={{ maxWidth: CONTENT_MAX }}>
       {children}
     </div>
@@ -837,7 +962,7 @@ export default function OrgListMap({ view = "map", accent = FALLBACK_COLOR }) {
   const shared = { selected, setSelected, hovered, setHovered };
   const onMapIds = new Set(regionAreas.map(a => a.region_id));
 
-  const block = (region, indent) => (
+  const block = (region: Region, indent: boolean) => (
     <RegionBlock
       key={region.id}
       region={region}
diff --git a/src/pages/sections/OrgList-Vertical.tsx b/src/pages/sections/OrgList-Vertical.tsx
index b402dfa..510ef12 100644
--- a/src/pages/sections/OrgList-Vertical.tsx
+++ b/src/pages/sections/OrgList-Vertical.tsx
@@ -1,5 +1,13 @@
-import { useId, useState } from "react";
+import {
+  useId,
+  useState,
+  type AnchorHTMLAttributes,
+  type ButtonHTMLAttributes,
+  type ReactNode,
+} from "react";
 import ArrowLink from "../../components/ArrowLink.tsx";
+import type { OrgKind } from "../../lib/hrefs.ts";
+import type { OrganizationListItem } from "../../lib/useContent.ts";
 import {
   areasSentence,
   initialsFor,
@@ -47,7 +55,14 @@ const FALLBACK_COLOR = "#4a6b72";
    it — a link nested in a button is invalid, and a screen reader
    announces the whole row as one confused control.
    ───────────────────────────────────────────────────────────── */
-function RowButton({ as: As = "button", color, children, ...rest }) {
+type RowButtonProps = {
+  as?: "a" | "button";
+  color: string;
+  children: ReactNode;
+} & AnchorHTMLAttributes<HTMLAnchorElement> &
+  ButtonHTMLAttributes<HTMLButtonElement>;
+
+function RowButton({ as: As = "button", color, children, ...rest }: RowButtonProps) {
   return (
     <As
       className="shrink-0 whitespace-nowrap py-2 px-4 rounded-xl font-700 text-sm transition-transform duration-200 hover:scale-105"
@@ -59,7 +74,13 @@ function RowButton({ as: As = "button", color, children, ...rest }) {
   );
 }
 
-function OrgMark({ org, color }) {
+function OrgMark({
+  org,
+  color,
+}: {
+  org: Pick<OrganizationListItem, "logo" | "color" | "name">;
+  color: string;
+}) {
   const [failed, setFailed] = useState(false);
 
   if (org.logo && !failed) {
@@ -94,7 +115,9 @@ function OrgMark({ org, color }) {
   );
 }
 
-function OrgRow({ org, pageLabel, siteLabel }) {
+type RowLabels = { pageLabel: string; siteLabel: string };
+
+function OrgRow({ org, pageLabel, siteLabel }: RowLabels & { org: OrganizationListItem }) {
   const [open, setOpen] = useState(false);
   const panelId = useId();
 
@@ -245,7 +268,12 @@ function OrgRow({ org, pageLabel, siteLabel }) {
   );
 }
 
-function Block({ title, orgs, pageLabel, siteLabel }) {
+function Block({
+  title,
+  orgs,
+  pageLabel,
+  siteLabel,
+}: RowLabels & { title?: string; orgs: OrganizationListItem[] }) {
   if (orgs.length === 0) return null;
 
   return (
@@ -262,7 +290,30 @@ function Block({ title, orgs, pageLabel, siteLabel }) {
   );
 }
 
-const byName = (a, b) => a.name.localeCompare(b.name);
+const byName = (a: OrganizationListItem, b: OrganizationListItem) =>
+  a.name.localeCompare(b.name);
+
+/* One heading's worth of the list. Labels override the list's own. */
+type OrgGroup = {
+  key: string;
+  title: string;
+  pageLabel?: string;
+  siteLabel?: string;
+};
+
+type OrgListVerticalProps = {
+  kind?: OrgKind;
+  title?: string;
+  groups?: OrgGroup[];
+  /** Which group key an organization files under. */
+  groupBy?: (org: OrganizationListItem) => string | null | undefined;
+  accent?: string;
+  pageLabel?: string;
+  siteLabel?: string;
+  /** Null keeps the API's order. */
+  sort?: ((a: OrganizationListItem, b: OrganizationListItem) => number) | null;
+  empty?: string;
+};
 
 export default function OrgListVertical({
   kind,
@@ -274,10 +325,10 @@ export default function OrgListVertical({
   siteLabel = "Visit site",
   sort = byName,
   empty = "· Nothing to show here just yet ·",
-}) {
+}: OrgListVerticalProps) {
   const { organizations, loading, error } = useOrganizations(kind);
 
-  const shell = children => (
+  const shell = (children: ReactNode) => (
     <div className="mx-auto px-8 md:px-12 max-w-6xl">{children}</div>
   );