feat: endpoints de mutacion y de projects

- handlers_mutations.go: POST add_app/add_analysis/add_vault/reindex
- handlers_projects.go: GET projects y project detail (apps/analysis/vaults nested)
- handlers.go + main.go: cablear nuevas rutas
- handlers_test.go: ajustes minimos
- app.md: documentar endpoints v0.2

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

handlers.go

@@ -13,11 +13,12 @@ const queryTimeout = 5 * time.Second
 
 // Server holds the HTTP handlers and DB pool.
 type Server struct {
-	pool *DBPool
+	pool         *DBPool
+	registryRoot string // raiz del fn_registry (para exec fn ...)
 }
 
-func NewServer(pool *DBPool) *Server {
-	return &Server{pool: pool}
+func NewServer(pool *DBPool, registryRoot string) *Server {
+	return &Server{pool: pool, registryRoot: registryRoot}
 }
 
 // Routes registers all API routes on the given mux.
@@ -28,6 +29,16 @@ func (s *Server) Routes(mux *http.ServeMux) {
 	mux.HandleFunc("GET /api/databases/{db}/schema", s.handleSchema)
 	mux.HandleFunc("POST /api/databases/{db}/query", s.handleQuery)
 	mux.HandleFunc("GET /api/databases/{db}/fts", s.handleFTS)
+
+	// Projects: listado con conteos + detalle nested
+	mux.HandleFunc("GET /api/projects", s.handleProjects)
+	mux.HandleFunc("GET /api/projects/{id}", s.handleProjectDetail)
+
+	// Mutaciones: reindex + add (apps/analysis/vaults)
+	mux.HandleFunc("POST /api/reindex", s.handleReindex)
+	mux.HandleFunc("POST /api/add/app", s.handleAddApp)
+	mux.HandleFunc("POST /api/add/analysis", s.handleAddAnalysis)
+	mux.HandleFunc("POST /api/add/vault", s.handleAddVault)
 }
 
 func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {