Integrate BACKBEAT SDK and resolve KACHING license validation

Major integrations and fixes:
- Added BACKBEAT SDK integration for P2P operation timing
- Implemented beat-aware status tracking for distributed operations
- Added Docker secrets support for secure license management
- Resolved KACHING license validation via HTTPS/TLS
- Updated docker-compose configuration for clean stack deployment
- Disabled rollback policies to prevent deployment failures
- Added license credential storage (CHORUS-DEV-MULTI-001)

Technical improvements:
- BACKBEAT P2P operation tracking with phase management
- Enhanced configuration system with file-based secrets
- Improved error handling for license validation
- Clean separation of KACHING and CHORUS deployment stacks

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/github.com/ipfs/go-datastore/null_ds.go

@@ -0,0 +1,120 @@
+package datastore
+
+import (
+	"context"
+
+	dsq "github.com/ipfs/go-datastore/query"
+)
+
+// NullDatastore stores nothing, but conforms to the API.
+// Useful to test with.
+type NullDatastore struct {
+}
+
+var _ Datastore = (*NullDatastore)(nil)
+var _ Batching = (*NullDatastore)(nil)
+var _ ScrubbedDatastore = (*NullDatastore)(nil)
+var _ CheckedDatastore = (*NullDatastore)(nil)
+var _ PersistentDatastore = (*NullDatastore)(nil)
+var _ GCDatastore = (*NullDatastore)(nil)
+var _ TxnDatastore = (*NullDatastore)(nil)
+
+// NewNullDatastore constructs a null datastoe
+func NewNullDatastore() *NullDatastore {
+	return &NullDatastore{}
+}
+
+// Put implements Datastore.Put
+func (d *NullDatastore) Put(ctx context.Context, key Key, value []byte) (err error) {
+	return nil
+}
+
+// Sync implements Datastore.Sync
+func (d *NullDatastore) Sync(ctx context.Context, prefix Key) error {
+	return nil
+}
+
+// Get implements Datastore.Get
+func (d *NullDatastore) Get(ctx context.Context, key Key) (value []byte, err error) {
+	return nil, ErrNotFound
+}
+
+// Has implements Datastore.Has
+func (d *NullDatastore) Has(ctx context.Context, key Key) (exists bool, err error) {
+	return false, nil
+}
+
+// Has implements Datastore.GetSize
+func (d *NullDatastore) GetSize(ctx context.Context, key Key) (size int, err error) {
+	return -1, ErrNotFound
+}
+
+// Delete implements Datastore.Delete
+func (d *NullDatastore) Delete(ctx context.Context, key Key) (err error) {
+	return nil
+}
+
+func (d *NullDatastore) Scrub(ctx context.Context) error {
+	return nil
+}
+
+func (d *NullDatastore) Check(ctx context.Context) error {
+	return nil
+}
+
+// Query implements Datastore.Query
+func (d *NullDatastore) Query(ctx context.Context, q dsq.Query) (dsq.Results, error) {
+	return dsq.ResultsWithEntries(q, nil), nil
+}
+
+func (d *NullDatastore) Batch(ctx context.Context) (Batch, error) {
+	return NewBasicBatch(d), nil
+}
+
+func (d *NullDatastore) CollectGarbage(ctx context.Context) error {
+	return nil
+}
+
+func (d *NullDatastore) DiskUsage(ctx context.Context) (uint64, error) {
+	return 0, nil
+}
+
+func (d *NullDatastore) Close() error {
+	return nil
+}
+
+func (d *NullDatastore) NewTransaction(ctx context.Context, readOnly bool) (Txn, error) {
+	return &nullTxn{}, nil
+}
+
+type nullTxn struct{}
+
+func (t *nullTxn) Get(ctx context.Context, key Key) (value []byte, err error) {
+	return nil, nil
+}
+
+func (t *nullTxn) Has(ctx context.Context, key Key) (exists bool, err error) {
+	return false, nil
+}
+
+func (t *nullTxn) GetSize(ctx context.Context, key Key) (size int, err error) {
+	return 0, nil
+}
+
+func (t *nullTxn) Query(ctx context.Context, q dsq.Query) (dsq.Results, error) {
+	return dsq.ResultsWithEntries(q, nil), nil
+}
+
+func (t *nullTxn) Put(ctx context.Context, key Key, value []byte) error {
+	return nil
+}
+
+func (t *nullTxn) Delete(ctx context.Context, key Key) error {
+	return nil
+}
+
+func (t *nullTxn) Commit(ctx context.Context) error {
+	return nil
+}
+
+func (t *nullTxn) Discard(ctx context.Context) {}