feat: initial scaffold of kanban_cpp v2 (issue 0130)

Frontend C++ ImGui (main.cpp + 4 paneles) + backend Go (HTTP + SQLite + fsnotify + SSE). Reusa parse/scan/watch funcs del registry (issue 0130a).
2026-05-22 22:19:47 +02:00
commit 255e8dcf71
21 changed files with 2178 additions and 0 deletions
@@ -0,0 +1,150 @@
+#include "panels.h"
+#include "data.h"
+
+#include <imgui.h>
+#include <imgui_internal.h>
+#include <mutex>
+#include <string>
+#include <vector>
+
+#include "core/icons_tabler.h"
+
+namespace kanban {
+
+static const char* k_columns[] = {"pendiente", "in-progress", "bloqueado", "completado"};
+static const int   k_n_columns = sizeof(k_columns) / sizeof(k_columns[0]);
+
+static ImU32 priority_color(const std::string& p) {
+    if (p == "critica") return IM_COL32(255, 80, 80, 255);
+    if (p == "alta")    return IM_COL32(255, 165, 0, 255);
+    if (p == "media")   return IM_COL32(120, 170, 255, 255);
+    if (p == "baja")    return IM_COL32(140, 140, 140, 255);
+    return IM_COL32(180, 180, 180, 255);
+}
+
+static void draw_card(const Issue& iss) {
+    ImGui::PushID(iss.id.c_str());
+
+    ImVec2 size(0.0f, 64.0f);
+    ImGui::BeginChild("card", size, true, ImGuiWindowFlags_NoScrollbar);
+
+    // Header: id + priority badge
+    ImGui::TextColored(ImColor(180, 180, 180, 255), "%s", iss.id.c_str());
+    ImGui::SameLine();
+    {
+        ImVec2 cur = ImGui::GetCursorScreenPos();
+        ImU32 c = priority_color(iss.priority);
+        ImDrawList* dl = ImGui::GetWindowDrawList();
+        float r = 5.0f;
+        dl->AddCircleFilled(ImVec2(cur.x + r, cur.y + r + 2), r, c);
+        ImGui::Dummy(ImVec2(2 * r + 4, 2 * r));
+        ImGui::SameLine();
+        ImGui::TextUnformatted(iss.priority.c_str());
+    }
+
+    // Title (truncate to ~60 chars)
+    std::string t = iss.title;
+    if (t.size() > 70) t = t.substr(0, 67) + "...";
+    ImGui::TextWrapped("%s", t.c_str());
+
+    // First domain chip
+    if (!iss.domain.empty()) {
+        ImGui::TextColored(ImColor(140, 200, 255, 255), TI_TAG " %s", iss.domain[0].c_str());
+    }
+
+    ImGui::EndChild();
+
+    if (ImGui::IsItemClicked()) {
+        refresh_issue_detail(iss.id);
+    }
+
+    // Drag source
+    if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
+        ImGui::SetDragDropPayload("KANBAN_ISSUE", iss.id.c_str(), iss.id.size() + 1);
+        ImGui::Text("%s %s", iss.id.c_str(), t.c_str());
+        ImGui::EndDragDropSource();
+    }
+
+    ImGui::PopID();
+}
+
+static void draw_column(const char* status_key, std::vector<const Issue*>& items) {
+    ImGui::TableNextColumn();
+    // Column header with count
+    ImGui::PushFont(nullptr);
+    ImGui::TextColored(ImColor(220, 220, 220, 255), "%s  (%zu)", status_key, items.size());
+    ImGui::PopFont();
+    ImGui::Separator();
+
+    // Drop target on the whole column
+    ImVec2 region = ImGui::GetContentRegionAvail();
+    ImGui::BeginChild((std::string("col_") + status_key).c_str(), region, false);
+
+    for (const auto* iss : items) {
+        draw_card(*iss);
+    }
+    // Bottom drop zone
+    ImGui::InvisibleButton("col_drop", ImVec2(-1, 16));
+    if (ImGui::BeginDragDropTarget()) {
+        if (const ImGuiPayload* p = ImGui::AcceptDragDropPayload("KANBAN_ISSUE")) {
+            std::string id((const char*)p->Data, p->DataSize - 1);
+            patch_issue_status(id, status_key);
+        }
+        ImGui::EndDragDropTarget();
+    }
+    ImGui::EndChild();
+
+    if (ImGui::BeginDragDropTarget()) {
+        if (const ImGuiPayload* p = ImGui::AcceptDragDropPayload("KANBAN_ISSUE")) {
+            std::string id((const char*)p->Data, p->DataSize - 1);
+            patch_issue_status(id, status_key);
+        }
+        ImGui::EndDragDropTarget();
+    }
+}
+
+void draw_board() {
+    if (!ImGui::Begin(TI_LAYOUT_KANBAN " Board")) {
+        ImGui::End();
+        return;
+    }
+
+    // Snapshot under lock
+    std::vector<Issue> snapshot;
+    {
+        std::lock_guard<std::mutex> g(state().mu);
+        snapshot = state().issues;
+    }
+
+    // Bucket issues by status
+    std::vector<std::vector<const Issue*>> buckets(k_n_columns);
+    int filtered_out = 0;
+    for (const auto& iss : snapshot) {
+        if (!passes_filters(iss)) {
+            filtered_out++;
+            continue;
+        }
+        for (int c = 0; c < k_n_columns; ++c) {
+            if (iss.status == k_columns[c]) {
+                buckets[c].push_back(&iss);
+                break;
+            }
+        }
+    }
+
+    ImGui::Text("%zu total — %d filtered out", snapshot.size(), filtered_out);
+    ImGui::Separator();
+
+    if (ImGui::BeginTable("board_table", k_n_columns,
+                         ImGuiTableFlags_BordersInnerV | ImGuiTableFlags_Resizable | ImGuiTableFlags_SizingStretchSame)) {
+        ImGui::TableNextRow();
+        for (int c = 0; c < k_n_columns; ++c) {
+            draw_column(k_columns[c], buckets[c]);
+        }
+        ImGui::EndTable();
+    }
+
+    ImGui::End();
+}
+
+}  // namespace kanban