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 +1,107 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"embed"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"syscall"
+	"time"
+)
+
+//go:embed migrations/*.sql
+var migrationsFS embed.FS
+
+type Server struct {
+	db        *sql.DB
+	issuesDir string
+	flowsDir  string
+	hub       *SSEHub
+}
+
+func main() {
+	port := flag.Int("port", 8487, "HTTP port")
+	dbPath := flag.String("db", "operations.db", "SQLite path")
+	registryRoot := flag.String("registry", "", "fn_registry root (default: auto-detect from cwd)")
+	flag.Parse()
+
+	root := *registryRoot
+	if root == "" {
+		root = detectRegistryRoot()
+	}
+	issuesDir := filepath.Join(root, "dev", "issues")
+	flowsDir := filepath.Join(root, "dev", "flows")
+
+	for _, d := range []string{issuesDir, flowsDir} {
+		if _, err := os.Stat(d); err != nil {
+			log.Fatalf("missing dir %s: %v", d, err)
+		}
+	}
+
+	db, err := openDB(*dbPath)
+	if err != nil {
+		log.Fatalf("openDB: %v", err)
+	}
+	defer db.Close()
+	if err := applyMigrations(db); err != nil {
+		log.Fatalf("applyMigrations: %v", err)
+	}
+
+	srv := &Server{
+		db:        db,
+		issuesDir: issuesDir,
+		flowsDir:  flowsDir,
+		hub:       newSSEHub(),
+	}
+
+	if err := srv.ingestAll(); err != nil {
+		log.Fatalf("initial ingest: %v", err)
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	go srv.watchLoop(ctx, srv.issuesDir, "issue")
+	go srv.watchLoop(ctx, srv.flowsDir, "flow")
+
+	mux := http.NewServeMux()
+	srv.registerRoutes(mux)
+	httpSrv := &http.Server{
+		Addr:         fmt.Sprintf(":%d", *port),
+		Handler:      withMiddleware(mux),
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 30 * time.Second,
+	}
+
+	go func() {
+		log.Printf("kanban_cpp_backend listening on :%d (registry=%s)", *port, root)
+		if err := httpSrv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("listen: %v", err)
+		}
+	}()
+
+	sig := make(chan os.Signal, 1)
+	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
+	<-sig
+	log.Println("shutdown")
+	shutdownCtx, cancelShutdown := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancelShutdown()
+	httpSrv.Shutdown(shutdownCtx)
+}
+
+func detectRegistryRoot() string {
+	wd, _ := os.Getwd()
+	for d := wd; d != "/" && d != "."; d = filepath.Dir(d) {
+		if _, err := os.Stat(filepath.Join(d, "registry.db")); err == nil {
+			return d
+		}
+	}
+	log.Fatalf("could not auto-detect fn_registry root from %s", wd)
+	return ""
+}