feat(console): right-click "Copy value" for hashes/addresses under the cursor

Right-clicking the output now offers "Copy <value>" when a long alphanumeric token
(txid/blockhash/address, >=16 chars) is under the cursor — resolved via screenToTextPos.
Uses right-click so it never conflicts with the left-drag text selection.

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

src/ui/windows/console_tab.cpp

@@ -549,6 +549,24 @@ void ConsoleTab::renderToolbar(ConsoleCommandExecutor& exec)
     }
 }
 
+namespace {
+// Extract a hash/address-like token (a long alphanumeric run, >= 16 chars) around byte
+// offset `col` in `text`, for the right-click "Copy value" action. Returns "" if none.
+std::string extractCopyableToken(const std::string& text, int col)
+{
+    const int n = static_cast<int>(text.size());
+    auto isTok = [](unsigned char c) { return std::isalnum(c) != 0; };
+    int at = col;
+    if (at >= n || (at >= 0 && !isTok(static_cast<unsigned char>(text[at])))) at--;
+    if (at < 0 || at >= n || !isTok(static_cast<unsigned char>(text[at]))) return {};
+    int s = at, e = at;
+    while (s > 0 && isTok(static_cast<unsigned char>(text[s - 1]))) s--;
+    while (e + 1 < n && isTok(static_cast<unsigned char>(text[e + 1]))) e++;
+    std::string tok = text.substr(s, e - s + 1);
+    return tok.size() >= 16 ? tok : std::string();  // txids/blockhashes/addresses are long
+}
+} // namespace
+
 void ConsoleTab::renderOutput()
 {
     using namespace material;
@@ -929,8 +947,27 @@ void ConsoleTab::renderOutput()
         ImGui::Dummy(ImVec2(0, ImGui::GetTextLineHeight()));
     }
     
+    // Capture the hash/address under the cursor on right-click, for "Copy value".
+    if (ImGui::IsMouseClicked(ImGuiMouseButton_Right)) {
+        TextPos tp = screenToTextPos(ImGui::GetMousePos(),
+                                     output_line_height_ > 0.0f ? output_line_height_ : line_height);
+        context_token_.clear();
+        if (tp.line >= 0 && tp.line < static_cast<int>(lines_.size()))
+            context_token_ = extractCopyableToken(lines_[tp.line].text, tp.col);
+    }
+
     // Right-click context menu
     if (ImGui::BeginPopupContextWindow("ConsoleContextMenu")) {
+        if (!context_token_.empty()) {
+            std::string shortTok = context_token_.size() > 22
+                ? context_token_.substr(0, 12) + "\xE2\x80\xA6" + context_token_.substr(context_token_.size() - 6)
+                : context_token_;
+            std::string label = std::string(TR("console_copy_value")) + " \"" + shortTok + "\"";
+            if (ImGui::MenuItem(label.c_str())) {
+                ImGui::SetClipboardText(context_token_.c_str());
+            }
+            ImGui::Separator();
+        }
         if (ImGui::MenuItem(TR("copy"), "Ctrl+C", false, has_selection_)) {
             std::string selected = getSelectedText();
             if (!selected.empty()) {

src/ui/windows/console_tab.h

@@ -153,6 +153,7 @@ private:
     // Output filter
     char filter_text_[128] = {0};
     mutable int filter_match_count_ = 0;        // lines matching the text filter (for the toolbar)
+    std::string context_token_;                 // hash/address under the cursor at right-click
     mutable std::vector<int> visible_indices_;  // Cached for selection mapping
     
     // Wrapped line height caching (for variable-height text wrapping)

src/util/i18n.cpp

@@ -983,6 +983,7 @@ void I18n::loadBuiltinEnglish()
         strings_["console_help_stop"] = "  stop          - Stop the daemon";
         strings_["console_line_count"] = "%zu lines";
         strings_["console_matches"] = "matches";
+        strings_["console_copy_value"] = "Copy";
         strings_["console_new_lines"] = "%d new lines";
         strings_["console_no_daemon"] = "No daemon";
         strings_["console_not_connected"] = "Error: Not connected to daemon";