refactor(console): phase 2 — channel-as-semantic key; decouple executor from UI colors

Make ConsoleChannel the canonical semantic classification of every console
line. Producers (command executor, app log forwarders, result formatter) tag
each line with a channel; the UI derives both the text color and the left
accent-bar color from it at draw time, and the output filter keys off it.

This replaces the prior scheme of storing an ImU32 color per line and then
reverse-engineering the source from color-equality plus a "[daemon] "/"[xmrig] "
/"[app] "/"[rpc] " text prefix. Consequences:

- ConsoleLine now stores {text, ConsoleChannel} — no per-line color.
- addLine()/addRpcTraceLine() take a channel; the redundant text prefixes are
  gone (the accent bar carries the origin).
- The executor's ConsoleAddLineFn hands a channel, not an ImU32, so the backend
  no longer depends on ConsoleTab::COLOR_* — FullNode/Lite executors emit clean
  text + channel.
- The theme-remap loop that rewrote stored colors on light/dark flip is deleted;
  colors are resolved per-channel each frame (refreshColors on flip only).
- ConsoleOutputFilter drops its color fields; consoleLinePassesFilter() keys off
  the channel. Test updated to the channel-based API.
- Added a Warning channel (amber severity peer of Error/Success) so the
  notification + logger warning forwarders keep their color.

Full-node + lite build clean; ctest green; source hygiene clean.

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

src/ui/windows/console_channel.h

@@ -0,0 +1,35 @@
+// DragonX Wallet - ImGui Edition
+// Copyright 2024-2026 The Hush Developers
+// Released under the GPLv3
+//
+// ConsoleChannel — the semantic classification of a console line. It is the canonical
+// key: producers (the command executor, app log forwarders, the result formatter) tag
+// each line with a channel, the UI derives both the text color and the left accent-bar
+// color from it at draw time, and the output filter keys off it. This replaces the older
+// approach of storing an ImU32 color and reverse-engineering the source from color
+// equality + a "[daemon] " text prefix.
+
+#pragma once
+
+namespace dragonx {
+namespace ui {
+
+enum class ConsoleChannel {
+    None = 0,     // plain result / default text
+    Command,      // the "> cmd" echo
+    Info,         // informational / help text
+    Success,      // positive events (connected, accepted, ready)
+    Warning,      // non-fatal warnings (amber)
+    Error,        // errors
+    Rpc,          // RPC trace lines
+    Daemon,       // dragonxd log output
+    Xmrig,        // miner log output
+    App,          // app / wallet / lite-diagnostics log
+    JsonKey,      // result JSON: object key
+    JsonString,   // result JSON: string value
+    JsonNumber,   // result JSON: number / bool / null
+    JsonBrace,    // result JSON: braces / brackets
+};
+
+} // namespace ui
+} // namespace dragonx