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/decred/dcrd/dcrec/secp256k1/v4/README.md

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+secp256k1
+=========
+
+[![Build Status](https://github.com/decred/dcrd/workflows/Build%20and%20Test/badge.svg)](https://github.com/decred/dcrd/actions)
+[![ISC License](https://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org)
+[![Doc](https://img.shields.io/badge/doc-reference-blue.svg)](https://pkg.go.dev/github.com/decred/dcrd/dcrec/secp256k1/v4)
+
+Package secp256k1 implements optimized secp256k1 elliptic curve operations.
+
+This package provides an optimized pure Go implementation of elliptic curve
+cryptography operations over the secp256k1 curve as well as data structures and
+functions for working with public and private secp256k1 keys.  See
+https://www.secg.org/sec2-v2.pdf for details on the standard.
+
+In addition, sub packages are provided to produce, verify, parse, and serialize
+ECDSA signatures and EC-Schnorr-DCRv0 (a custom Schnorr-based signature scheme
+specific to Decred) signatures.  See the README.md files in the relevant sub
+packages for more details about those aspects.
+
+An overview of the features provided by this package are as follows:
+
+- Private key generation, serialization, and parsing
+- Public key generation, serialization and parsing per ANSI X9.62-1998
+  - Parses uncompressed, compressed, and hybrid public keys
+  - Serializes uncompressed and compressed public keys
+- Specialized types for performing optimized and constant time field operations
+  - `FieldVal` type for working modulo the secp256k1 field prime
+  - `ModNScalar` type for working modulo the secp256k1 group order
+- Elliptic curve operations in Jacobian projective coordinates
+  - Point addition
+  - Point doubling
+  - Scalar multiplication with an arbitrary point
+  - Scalar multiplication with the base point (group generator)
+- Point decompression from a given x coordinate
+- Nonce generation via RFC6979 with support for extra data and version
+  information that can be used to prevent nonce reuse between signing algorithms
+
+It also provides an implementation of the Go standard library `crypto/elliptic`
+`Curve` interface via the `S256` function so that it may be used with other
+packages in the standard library such as `crypto/tls`, `crypto/x509`, and
+`crypto/ecdsa`.  However, in the case of ECDSA, it is highly recommended to use
+the `ecdsa` sub package of this package instead since it is optimized
+specifically for secp256k1 and is significantly faster as a result.
+
+Although this package was primarily written for dcrd, it has intentionally been
+designed so it can be used as a standalone package for any projects needing to
+use optimized secp256k1 elliptic curve cryptography.
+
+Finally, a comprehensive suite of tests is provided to provide a high level of
+quality assurance.
+
+## secp256k1 use in Decred
+
+At the time of this writing, the primary public key cryptography in widespread
+use on the Decred network used to secure coins is based on elliptic curves
+defined by the secp256k1 domain parameters.
+
+## Installation and Updating
+
+This package is part of the `github.com/decred/dcrd/dcrec/secp256k1/v4` module.
+Use the standard go tooling for working with modules to incorporate it.
+
+## Examples
+
+* [Encryption](https://pkg.go.dev/github.com/decred/dcrd/dcrec/secp256k1/v4#example-package-EncryptDecryptMessage)
+  Demonstrates encrypting and decrypting a message using a shared key derived
+  through ECDHE.
+
+## License
+
+Package secp256k1 is licensed under the [copyfree](http://copyfree.org) ISC
+License.