feat(console): terminal polish — lite/color-coded toggles, dark bg, monospace font

Work through the console items in todo.md:

- Lite filter toggles (#5): replace the single hasLogFilters() bool with a
  ConsoleLogFilterCaps struct so each backend advertises which toggles apply.
  Full node = daemon/errors/rpc-trace/app; lite = errors-only + app (its
  diagnostics ring maps to the App/Error channels; the text filter is always
  shown). Lite previously showed no toggles at all.
- Color-coded toggles (#6): each filter checkbox is tinted with its channel's
  accent color (daemon=blue, errors=red, rpc=secondary, app=teal) via a new
  channelAccentColor() that also drives the output's left accent bar — one source
  of truth for channel color.
- Darker terminal look (#7): drop the light glass rectangle on the input; both
  output and input now get a terminal-dark overlay (tabs.console.bg-darken-alpha,
  default 110) and the input field blends into it (transparent frame bg).
- Monospace font (#8): bundle Ubuntu Mono (res/fonts/UbuntuMono-R.ttf, Ubuntu
  Font License — same family as the existing Ubuntu fonts) via INCBIN, load it at
  caption size as Type().mono(), and render console output + input in it so
  pretty-printed JSON columns and terminal text align. Falls back to the
  proportional caption font if unavailable.

Full-node + lite build clean; ctest green; source hygiene clean; sandboxed
startup smoke confirms the mono font loads + atlas builds without crashing.

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

src/ui/windows/console_command_executor.h

@@ -32,6 +32,17 @@ struct ConsoleStatusLine {
     bool        pulse = false;   // animate the toolbar dot (starting/connecting)
 };
 
+// Which log-filter toggles the toolbar should show for a given backend. The full node has a
+// daemon/xmrig log + an RPC trace; the lite backend has neither (its diagnostics ring maps to
+// the App/Error channels), so it only wants the errors-only + app-messages toggles.
+struct ConsoleLogFilterCaps {
+    bool daemon      = false;  // daemon + xmrig output toggle
+    bool errorsOnly  = false;  // errors-only toggle
+    bool rpcTrace    = false;  // RPC method/source trace toggle
+    bool appMessages = false;  // app / diagnostics log toggle
+    bool any() const { return daemon || errorsOnly || rpcTrace || appMessages; }
+};
+
 class ConsoleCommandExecutor {
 public:
     virtual ~ConsoleCommandExecutor() = default;
@@ -53,7 +64,8 @@ public:
 
     // UI-chrome capabilities.
     virtual bool hasRpcReference() const { return false; } // show the RPC command-reference popup
-    virtual bool hasLogFilters() const { return false; }   // show daemon/errors/rpc-trace/app filters
+    // Which log-filter toggles the toolbar should show (default: none).
+    virtual ConsoleLogFilterCaps logFilterCaps() const { return {}; }
 
     // Print the backend-appropriate `help` output via `add`.
     virtual void printHelp(const ConsoleAddLineFn& add) = 0;
@@ -75,7 +87,8 @@ public:
     bool pollResult(std::string& result, bool& isError) override;
     void pollLogLines(const ConsoleAddLineFn& add) override;
     bool hasRpcReference() const override { return true; }
-    bool hasLogFilters() const override { return true; }
+    // Full node: daemon/xmrig log, errors-only, RPC trace, and app messages.
+    ConsoleLogFilterCaps logFilterCaps() const override { return {true, true, true, true}; }
     void printHelp(const ConsoleAddLineFn& add) override;
     ConsoleStatusLine toolbarStatus() const override;
 
@@ -99,6 +112,9 @@ public:
     void submit(const std::string& cmd) override;
     bool pollResult(std::string& result, bool& isError) override;
     void pollLogLines(const ConsoleAddLineFn& add) override;
+    // Lite: no daemon log / RPC trace — its diagnostics ring maps to the App + Error
+    // channels, so offer errors-only + app-messages (plus the always-shown text filter).
+    ConsoleLogFilterCaps logFilterCaps() const override { return {false, true, false, true}; }
     void printHelp(const ConsoleAddLineFn& add) override;
     std::vector<ConsoleStatusLine> statusLines() const override;
     ConsoleStatusLine toolbarStatus() const override;