feat: Go module structure and build system for Python to Go migration

[devin-ai-integration]

Description

This PR establishes the foundational Go project structure and build system for Phase 1 of the teal-agents Python→Go migration. This is infrastructure-only work - all Python code remains completely unchanged and functional. The Go code contains only placeholder interfaces/structs to establish package structure for future migration phases.

⚠️ Important: All Go files contain placeholder code only - no actual functionality has been migrated yet. This is intentional for Phase 1.

Changes

Go Module & Project Structure

• ✅ Initialized go.mod with module github.com/thepollari/teal-agents (Go 1.21)
• ✅ Created pkg/ directory structure mirroring Python packages:
  • pkg/agents/ ← src/sk-agents/ (Agent interface placeholder)
  • pkg/orchestrators/assistant/ ← src/orchestrators/assistant-orchestrator/ (empty Orchestrator struct)
  • pkg/orchestrators/collaborative/ ← src/orchestrators/collab-orchestrator/ (empty Orchestrator struct)
  • pkg/shared/utils/ ← shared/ska_utils/ (Logger interface placeholder)
• ✅ Empty go.sum (no dependencies yet - intentional)

Build System (Makefile)

Extended existing Makefile with Go-specific targets (all prefixed with go-):

• make go-build - Build packages to bin/ directory
• make go-test - Run tests with race detection + coverage
• make go-clean - Clean artifacts and caches
• make go-fmt / go-vet / go-lint - Code quality checks
• make go-docker-build - Build Go Docker images
• make go-all - Run all checks + build + test

Note: Existing Python targets (make all, make teal-agents, etc.) are completely unchanged.

Docker Infrastructure

• ✅ go-agents.Dockerfile - Multi-stage build for core agent framework
• ✅ go-orchestrators.Dockerfile - Multi-stage build with dual targets (assistant + collaborative)
  • Build stage: golang:1.21-alpine with git, make
  • Runtime stage: minimal alpine:latest + non-root user (skagent:1000)
  • Security: CGO_ENABLED=0, minimal attack surface

Configuration & Documentation

• ✅ Updated .gitignore (bin/, coverage files, vendor/, go.work)
• ✅ Comprehensive documentation in docs/go-migration/README.md (201 lines)
  • Python→Go package mapping guide
  • Development workflow instructions
  • Docker usage examples
  • Future migration phases outline

Type of Change

• New feature (Go infrastructure setup)
• Documentation
• Bugfix
• Refactor
• Other

Validation Results

All commands verified working with Go 1.21.13:

✅ go mod verify          # All modules verified
✅ make go-fmt            # Formatting passed
✅ make go-vet            # Static analysis passed
✅ make go-build          # Packages built to bin/
✅ make go-test           # Tests passed (no test files yet - expected)
✅ make go-docker-build   # Both images built successfully

Human Review Checklist

Critical items requiring review:

1. Go Project Structure

   • pkg/ vs cmd/ layout - is pkg/ appropriate for all code or should we add cmd/ for executables in future phases?
   • Package naming conventions follow Go community standards

2. Build System Correctness

   • go build -o bin/agent ./pkg/agents/... produces package archives (not executables). Is this the intended behavior for Phase 1?
   • New Go targets don't interfere with existing Python build workflow
   • Target dependencies and ordering are correct

3. Docker Best Practices

   • go-orchestrators.Dockerfile multi-target pattern (assistant/collaborative) - should these be separate Dockerfiles instead?
   • Multi-stage build approach is optimal for this use case
   • Security measures are adequate (non-root user, minimal base, CGO_ENABLED=0)
   • Build flags (-a -installsuffix cgo) are appropriate

4. Documentation & Future-Proofing

   • Migration documentation accurately reflects project goals and timeline
   • Python→Go package mapping is correct and complete
   • Directory structure will scale as actual functionality is added
   • .gitignore covers all necessary Go artifacts

5. go.sum Handling

   • Empty go.sum file (single newline) is correct for zero dependencies

Known Behaviors

• No executable binaries: The bin/ directory contains Go package archives (.a files), not executables, since there are no main() functions yet. This is expected for Phase 1.
• No CI checks: This PR doesn't have CI configured yet for the demo-go-migration branch.
• Python untouched: Zero changes to existing Python codebase - it remains fully functional.

Additional Context

• Link to Devin run: https://app.devin.ai/sessions/97ca0dcb46834baaadcec2a4eebbf8ed
• Requested by: Jude Partovi (@jpartovi)
• Migration Phase: 1 of N (infrastructure setup only)
• Next Steps: Phase 2 will implement actual Go functionality (agent logic, semantic-kernel equivalents, etc.)

[devin-ai-integration]

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