Convert src/ JavaScript modules to TypeScript

Renames every .js module under src/ to .ts (api, useResource,
adminSchema, navConfig, adminNav and src/data/*) and points imports,
comments and the seed script's module paths at the new names. Their
types now come from inference; no .d.ts files and no shape
interfaces.

tsc stays strict (noImplicitAny off). The errors inference leaves
behind get the lightest fix that clears them: `any` on empty state,
contexts and list defaults, `: any` on components with optional or
spread props, class fields on ApiError, and option shapes on
get/useResource.

Kept as real types, since they belong to modules that were already
TypeScript and later features import them: PageShell's ShellSection
and props, useContent's corrected record types (website/email/
instagram are bare strings) and EventListItem, and TimelineRef's
orgKind.

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

src/data/feedbackTypes.js

@@ -1,51 +0,0 @@
-/* ═══════════════════════════════════════════════════════════════
-   FEEDBACK TYPES
-
-   Used by the public form (to render the tiles) and the admin
-   triage view (to label them). The ids must match TYPES in
-   server/src/routes/feedback.js — that list stays separate because
-   the server isn't in this workspace, and it's the thing that
-   decides what's storable.
-
-   'general' isn't offered anywhere; it's the server's fallback for
-   a type it doesn't recognise, so old rows still read sensibly.
-   ═══════════════════════════════════════════════════════════════ */
-
-export const FEEDBACK_TYPES = [
-  {
-    id: "broken",
-    label: "Something's broken",
-    hint: "A link, image, or button that doesn't work",
-  },
-  {
-    id: "confusing",
-    label: "Hard to use",
-    hint: "Something you couldn't find or follow",
-  },
-  {
-    id: "outdated",
-    label: "Wrong or missing info",
-    hint: "Old dates, typos, an event that isn't listed",
-  },
-  {
-    id: "request",
-    label: "Feature request",
-    hint: "Something you'd like the site to do",
-  },
-  {
-    id: "praise",
-    label: "Kind words",
-    hint: "Tell us what's working well",
-  },
-  {
-    id: "other",
-    label: "Something else",
-    hint: "Anything that doesn't fit the boxes above",
-  },
-];
-
-const BY_ID = new Map(FEEDBACK_TYPES.map((t) => [t.id, t.label]));
-
-export function feedbackTypeLabel(id) {
-  return BY_ID.get(id) ?? (id === "general" ? "Unsorted" : id);
-}