react-bootstrap migration, review & parser fixes

UI / react-bootstrap:
Migrate client components to react-bootstrap (Card, Table, Form,
Alert, Badge, Nav, Button, Spinner, Row, Col): the ZXDB explorers
and detail pages (Labels, Genres, Languages, MachineTypes, Releases,
Entries), TapeIdentifier, home page, Navbar and ThemeDropdown.
Server components (home, zxdb hub, magazines, issues) keep raw
HTML+className — react-bootstrap barrel imports resolve to undefined
under Turbopack in server components. Replace bi bi-* CSS icons with
react-bootstrap-icons. Add aria-labels to search inputs and
visually-hidden captions to data tables.

Code-review remediation (docs/todo.md):
- FileViewer: replace useState-as-effect with a proper useEffect.
- register.service: restore request-level caching of parsed registers.
- middleware: convert .js to .ts, dev-only request logging.
- Extract shared types to src/types/zxdb.ts; add src/server/repo
  barrel for incremental per-domain splitting.
- Extract helpers: parseIdList (params.ts), serialize (serialize.ts),
  buildRegisterSummary/isInfoLine (register_helpers.ts).
- Add loading.tsx skeletons for dynamic ZXDB detail routes.
- generateMetadata + notFound() on entry/release/label detail pages.
- opengraph-image: stable keys; ThemeDropdown: drop hardcoded cookie
  domain; remove unused page.module.css.

Register parser & data:
- Update data/nextreg.txt from upstream tbblue (SpectrumNext FPGA):
  0x04/0x0A/0x0F/0x80/0x81 bit changes, new Issue 5 board id, 0x43
  renamed "Palette Control", 0xF0/0xF8/0xF9/0xFA now "Issues 4 and 5
  Only".
- Add reg_44 custom parser for 0x44 (Palette Value 9-bit): the two
  consecutive writes render as separate "1st write" / "2nd write"
  modes.
- Skip commented-out register headers so the disabled 0xA3 block no
  longer leaks a phantom register.
- Add detailHasContent guard so body-less registers (0xC7/0xCB/0xCF/
  0xFF) and 0xF0's leading blank no longer emit empty tab strips.
- Capture 0xF0's leading "Issues 4 and 5 Only" line as register text.
- Add isIssueRestricted (case-sensitive) to detect the issue badge
  across rewording without flagging per-bit "(issue 5 only)" notes;
  update badge label to "Issues 4 & 5 Only".

claude-opus-4-8@lucy

src/hooks/useSearchFetch.ts

@@ -1,13 +1,7 @@
 "use client";
 
 import { useCallback, useRef, useState } from "react";
-
-type Paged<T> = {
-  items: T[];
-  page: number;
-  pageSize: number;
-  total: number;
-};
+import type { PagedResult } from "@/types/zxdb";
 
 /**
  * Manages API search fetching with automatic request cancellation
@@ -19,14 +13,16 @@ type Paged<T> = {
  */
 export default function useSearchFetch<T>(
   endpoint: string,
-  initialData: Paged<T> | null = null,
+  initialData: PagedResult<T> | null = null,
   onExtra?: (json: Record<string, unknown>) => void,
 ) {
-  const [data, setData] = useState<Paged<T> | null>(initialData);
+  const [data, setData] = useState<PagedResult<T> | null>(initialData);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const abortRef = useRef<AbortController | null>(null);
   const fetchIdRef = useRef(0);
+  const onExtraRef = useRef(onExtra);
+  onExtraRef.current = onExtra;
 
   const fetch_ = useCallback(
     async (params: URLSearchParams) => {
@@ -55,7 +51,7 @@ export default function useSearchFetch<T>(
             pageSize: json.pageSize,
             total: json.total,
           });
-          onExtra?.(json);
+          onExtraRef.current?.(json);
         }
       } catch (e: unknown) {
         if (e instanceof DOMException && e.name === "AbortError") return;
@@ -71,11 +67,11 @@ export default function useSearchFetch<T>(
         }
       }
     },
-    [endpoint, onExtra],
+    [endpoint],
   );
 
   // Allow syncing SSR data without a fetch
-  const syncData = useCallback((d: Paged<T>) => {
+  const syncData = useCallback((d: PagedResult<T>) => {
     abortRef.current?.abort();
     setData(d);
     setLoading(false);