docs: add library examples for calendar, crm, subtasks, applications

Four new executable examples mirror the oo-cli subcommands at library level so
downstream Go consumers can see the typed API without reading the CLI wiring.
README table updated to list all examples.

Made-with: Cursor

examples/applications/main.go

@@ -0,0 +1,54 @@
+// Package main shows how to drive the internal applications package — the same
+// logic that powers `oo-cli applications-sync` — directly from Go code.
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	go run ./examples/applications /path/to/cv/applications
+//
+// Without --apply equivalent, it prints a summary but performs no writes.
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/internal/applications"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintln(os.Stderr, "usage: applications <applications-root>")
+		os.Exit(2)
+	}
+	root := os.Args[1]
+
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL is not set")
+		os.Exit(1)
+	}
+	client := onlyoffice.NewClient(creds)
+
+	paths, err := applications.Discover(root)
+	if err != nil {
+		log.Fatalf("discover: %v", err)
+	}
+	fmt.Printf("discovered %d application READMEs under %s\n", len(paths), root)
+
+	var apps []applications.Data
+	for _, p := range paths {
+		d, err := applications.ParseReadme(p)
+		if err != nil {
+			log.Printf("parse %s: %v", p, err)
+			continue
+		}
+		apps = append(apps, d)
+	}
+
+	stats := applications.Sync(context.Background(), client, apps, true /*dryRun*/, true /*verbose*/)
+	fmt.Printf("\ndry-run stats: %+v\n", stats)
+}