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/quic-go/qpack/.golangci.yml

@@ -0,0 +1,27 @@
+run:
+linters-settings:
+linters:
+  disable-all: true
+  enable:
+    - asciicheck
+    - deadcode
+    - exhaustive
+    - exportloopref
+    - goconst
+    - gofmt # redundant, since gofmt *should* be a no-op after gofumpt
+    - gofumpt
+    - goimports
+    - gosimple
+    - ineffassign
+    - misspell
+    - prealloc
+    - scopelint
+    - staticcheck
+    - stylecheck
+    - structcheck
+    - unconvert
+    - unparam
+    - unused
+    - varcheck
+    - vet
+