feat(cli): crafter-debug, the client agents drive an app with

Cli::Run is the whole client but its transport, so tests run it in
process against a real Session; main will hand it the QUIC connection.

- Commands: ls, status, cmds, help, call, get, set, pause, resume,
  step, wait, trace, log (with --follow), screenshot, quit, debugger,
  guide and version, with -i, --json and --timeout.
- call types key=value from the command's argument schema (slot=1 is
  a number, name=1 a string, at.x=3 nests), so agents need no JSON
  for simple calls; a value that cannot fit its field is a usage
  error before anything is sent.
- The instance comes from discovery; one running instance needs no -i.
  The record's protocol is checked before any request: a mismatch
  exits 4, says which side is newer and prints the app's own client.
  Other sources only warn.
- A request with no reply is diagnosed: the app has exited, stopped
  in a debugger (with the attach command), or no longer calls Pump
  (with what to change). Exit codes: 2 usage, 3 no instance,
  4 version, 5 timeout, 6 the app's error.
- Output is short by default, arrays cut at 20 with a note; --json
  prints everything. `guide` is the full reference for agents.

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

interfaces/Crafter.Debug.Core-Codec.cppm

@@ -181,7 +181,8 @@ export namespace Crafter::Debug {
 
         static Value Describe() {
             Value description = Detail::Type("integer");
-            if constexpr (sizeof(T) < sizeof(std::int64_t)) {
+            // The range only where it tells an agent something: 8 and 16 bits.
+            if constexpr (sizeof(T) < sizeof(std::int32_t)) {
                 description.Set("minimum", Value(std::numeric_limits<T>::min()));
                 description.Set("maximum", Value(std::numeric_limits<T>::max()));
             }