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Worklog

Last reviewed: 2026-09-15

This log captures high-level milestones and systemic architectural transitions for RelayX.

Milestones & Architectural History

2026-09-15: Phase 6 Model Context Protocol (MCP) Server Implemented, Hardened & Verified

  • Objective: Deliver embedded Model Context Protocol (MCP) server supporting stdio and HTTP/SSE transports, event-driven message wait broker, OTP extraction, security hardening, and end-to-end verification.
  • Key Actions:
    • Implemented JSON-RPC 2.0 MCP server with 5 tools: wait_for_message, get_otp, get_latest_message, get_messages, and search_messages.
    • Built zero-polling in-memory EventBroker (broker.go) with subscriber channels, regex filtering, and thread-safe broadcast on message ingestion.
    • Implemented stdio transport (relayx-server mcp) for local agent CLI execution and HTTP/SSE transport (GET /mcp/sse, POST /mcp/message) for remote/daemon agent workflows.
    • Conducted branch security review and completed remediations: enforced strict Origin header validation (TASK-SEC-013), auto-generated default secure MCP token (TASK-SEC-014), and decoupled tool context from ephemeral POST handlers (TASK-SEC-015).
    • Achieved 100% automated test pass rate (48 Go server tests, 26 Android unit tests) and verified all 12 QA test cases across stdio and SSE modes (qa-2026-09-15.md).

2026-09-14: Phase 5 Android Rule & Filtering Engine Implemented, Hardened & Verified

  • Objective: Deliver client-side rule filtering engine, deterministic priority evaluation, default DROP privacy safeguard, regex transformation, interactive sandbox, and full dark theme support.
  • Key Actions:
    • Implemented RuleEngine domain evaluator with deterministic priority ASC, id ASC ordering, safe regex compilation, and FORWARD_RAW / FORWARD_TRANSFORMED / DROP action policies.
    • Upgraded Room database schema from version 1 to 2 with auto-migration and seeded starter 2FA OTP rule.
    • Integrated rule evaluation into IngestSmsUseCase, ensuring raw SMS from SmsReceiver and Dev Tools Mock SMS are filtered before network queueing.
    • Built RulesScreen with interactive RuleSandboxCard for instant rule simulation and execution trace.
    • Built modal bottom sheet for rule configuration with single-row scrollable chips and scroll-responsive FAB animations.
    • Added comprehensive Light/Dark/System Theme Mode configuration in Settings and synchronized edge-to-edge system bars.
    • Achieved 100% test pass rate across 53 unit tests and verified 11 live E2E scenarios on Android emulator.

2026-09-13: Phase 3 Android Message Inspection & Detail Modal Implemented, Hardened & Verified

  • Objective: Deliver real-time message inspection, multi-state filtering, payload privacy controls, and idempotent retry dispatch.
  • Key Actions:
    • Implemented MessageListScreen with reactive status filtering (All, Pending, Forwarded, Failed, Filtered) via synchronized HorizontalPager and PrimaryScrollableTabRow.
    • Built debounced real-time search across sender numbers and message UUIDs.
    • Implemented edge-to-edge layout with animated NavigationBar slide transitions and scroll-direction-aware collapsible search header.
    • Built MessageDetailBottomSheet with default payload masking (••••••••••••), eye toggle unmasking, clipboard copy feedback (LocalClipboard), and idempotent delivery retry.
    • Hardened with Compose API parameter ordering conventions and completed full security reviews (Branch, Follow-up, Task).
    • Verified 100% test pass rate across 22 Android unit tests, 19 Go server tests, and 15 live emulator QA scenarios.

2026-09-12: Phase 2 Android Gateway Foundation Implemented, Hardened & Verified

  • Objective: Deliver resilient, privacy-preserving Android Gateway client (relayx-android) for RelayX.
  • Key Actions:
    • Implemented Jetpack Compose Material 3 diagnostic dashboard and server configuration screen using Navigation 3 and Koin 4.2.
    • Built durable Room message outbox queue (OutboxMessageEntity) and WorkManager dispatch pipeline with exponential backoff.
    • Built high-priority SmsReceiver with multipart PDU reassembly and BootReceiver for boot persistence.
    • Built RelayLogger enforcing zero-sensitive logging of message bodies and OTP tokens.
    • Hardened with allowBackup="false", scoped network_security_config.xml, and server hook input sanitization.
    • Verified 100% test pass rate across 12 Android unit tests, 19 Go server tests, and 12 end-to-end emulator QA scenarios.

2026-09-07: Phase 1 Server Foundation Implemented & Verified

  • Objective: Deliver self-contained standalone Go server daemon with embedded SQLite storage, authenticated REST API, and cross-compilation verification.
  • Key Actions:
    • Implemented relayx-server standalone daemon with pure-Go SQLite WAL connection pool (modernc.org/sqlite) and go:embed SQL schema migrations (001_initial.sql).
    • Built authenticated message ingestion endpoint (POST /api/v1/messages) with Bearer token authentication (SHA-256 hash lookup) and idempotent deduplication on (device_id, message_id).
    • Implemented health monitoring (GET /api/v1/health) and filtered query endpoints (GET /api/v1/messages, /messages/latest, /messages/{id}).
    • Added RedactingHandler structured logging middleware to guarantee zero leakage of SMS message bodies and OTP tokens into logs.
    • Hardened with 1 MB request body size limiting (http.MaxBytesReader) and security headers (Cache-Control: no-store, X-Content-Type-Options: nosniff).
    • Verified cross-compilation for 4 platforms (Linux AMD64/ARM64, macOS AMD64/ARM64) via Makefile.
    • Achieved 100% test pass rate across 11 unit/integration tests and 11 CLI QA scenarios.

2026-09-07: Architecture & Governance Ratification

  • Objective: Establish complete specifications, memory governance, and roadmap for RelayX SMS Relay & MCP Automation Gateway.
  • Key Actions:
    • Defined system scope: Kotlin Compose Android Gateway (relayx-android), standalone Go Relay Server (relayx-server), embedded SQLite with migrations, and Model Context Protocol (MCP) server.
    • Ratified Constitution (.specify/memory/constitution.md) establishing 9 core principles and table index.
    • Formulated 6 Architecture Decision Records (docs/memory/DECISIONS.md) on zero-infrastructure Go binary, dual security domains, device-side filtering, event-driven MCP wait, and offline Room queuing.
    • Configured project memory index (docs/memory/INDEX.md) and verified SDD readiness.