Type src/ against API and database shapes, fixing implicit anys

Adds .d.ts declarations beside the untyped JS modules imported from
TS (api.js, navConfig.js, adminSchema.js, adminNav.js, src/data/*),
with shapes taken from the server routes and migrations. get/post/
patch/del now return unknown unless the caller names the response.

Fixes found along the way:
- website/email/instagram are bare strings from splitLinks, not Link
  objects; OrganizationDetail's website and email pills rendered with
  no href or label and now link correctly.
- The chapter map falls back to FALLBACK_COLOR for a region with no
  colour instead of painting its tiles black.

Adds defineSection() so each page manifest entry's props are checked
against its own Component.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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;