feat(console): redesign the RPC reference as a novice-friendly command explorer

Replace the flat, terse command-reference table with a guided two-pane
explorer built for users who don't know the RPC commands:

- Search by name OR task: keyword synonyms let "balance" find getbalance,
  "send money" find sendtoaddress; results are ranked (name-prefix > name >
  keyword > desc).
- Two panes (mirrors the portfolio editor): a category-grouped master list
  (mono names, a warning dot on consequential commands) + a rich detail pane
  with a plain-language explanation, a per-parameter type breakdown (string /
  number / json, optional dimmed), and a concrete example.
- Insert into console (fills the input with a template to review + run) and,
  for no-parameter commands, Insert & run — with a confirm for destructive
  ones. Deferred via pending_submit_ so the modal needs no executor.
- Keyboard: type to filter, Up/Down to move, Enter to insert; auto-focus and
  auto-select the top result.

Data model: ConsoleCommandEntry gains details/example/keywords/destructive
(C++17 defaults, so the ~60 un-enriched entries are untouched); ~20 common
commands enriched and 18 consequential ones flagged. Command docs stay English
(technical); the UI chrome + 7 category names are translated into all 8
languages (CJK subset rebuilt, +3 glyphs).

Verified: two-pane renders on dark + light skins and at font_scale 1.5; detail
pane shows explanation/params/example; danger dots + safety badge on
destructive commands.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/ui/windows/console_command_reference.h

@@ -7,8 +7,14 @@ namespace ui {
 
 struct ConsoleCommandEntry {
     const char* name;
-    const char* desc;
-    const char* params;
+    const char* desc;                 // terse one-line summary (always set)
+    const char* params;               // parameter template, e.g. "\"address\" amount [comment]"
+    // Optional novice-facing enrichment (C++17 aggregate defaults — entries that omit these keep
+    // the empty/false fallbacks, and the command explorer falls back to `desc`):
+    const char* details     = "";     // longer plain-language explanation
+    const char* example     = "";     // one concrete, runnable example line
+    const char* keywords    = "";     // space-separated search synonyms ("balance money funds")
+    bool        destructive = false;  // consequential/sensitive -> safety badge + run confirmation
 };
 
 struct ConsoleCommandCategory {