Add initial support for Go

Author: donald-pinckney

SKILL.md

@@ -1,14 +1,14 @@
 ---
 name: Temporal Development
-description: This skill should be used when the user asks to "create a Temporal workflow", "write a Temporal activity", "debug stuck workflow", "fix non-determinism error", "Temporal Python", "Temporal TypeScript", "workflow replay", "activity timeout", "signal workflow", "query workflow", "worker not starting", "activity keeps retrying", "Temporal heartbeat", "continue-as-new", "child workflow", "saga pattern", "workflow versioning", "durable execution", "reliable distributed systems", or mentions Temporal SDK development. Provides multi-language guidance for Python and TypeScript with operational scripts.
+description: This skill should be used when the user asks to "create a Temporal workflow", "write a Temporal activity", "debug stuck workflow", "fix non-determinism error", "Temporal Python", "Temporal TypeScript", "Temporal Go", "Temporal Golang", "workflow replay", "activity timeout", "signal workflow", "query workflow", "worker not starting", "activity keeps retrying", "Temporal heartbeat", "continue-as-new", "child workflow", "saga pattern", "workflow versioning", "durable execution", "reliable distributed systems", or mentions Temporal SDK development. Provides multi-language guidance for Python, TypeScript, and Go with operational scripts.
 version: 1.0.0
 ---
 
 # Temporal Development
 
 ## Overview
 
-Temporal is a durable execution platform that makes workflows survive failures automatically. This skill provides guidance for building Temporal applications in Python and TypeScript.
+Temporal is a durable execution platform that makes workflows survive failures automatically. This skill provides guidance for building Temporal applications in Python, TypeScript, and Go.
 
 ## Core Architecture
 
@@ -59,15 +59,17 @@ See `references/core/determinism.md` for detailed explanation.
 
 ## Determinism Quick Reference
 
-| Forbidden | Python | TypeScript |
-|-----------|--------|------------|
-| Current time | `workflow.now()` | `Date.now()` (auto-replaced) |
-| Random | `workflow.random()` | `Math.random()` (auto-replaced) |
-| UUID | `workflow.uuid4()` | `uuid4()` from workflow |
-| Sleep | `asyncio.sleep()` | `sleep()` from workflow |
+| Forbidden | Python | TypeScript | Go |
+|-----------|--------|------------|-----|
+| Current time | `workflow.now()` | `Date.now()` (auto-replaced) | `workflow.Now(ctx)` |
+| Random | `workflow.random()` | `Math.random()` (auto-replaced) | `workflow.SideEffect()` |
+| UUID | `workflow.uuid4()` | `uuid4()` from workflow | `workflow.SideEffect()` |
+| Sleep | `asyncio.sleep()` | `sleep()` from workflow | `workflow.Sleep(ctx, d)` |
+| Concurrency | N/A (async) | N/A (async) | `workflow.Go(ctx, fn)` |
 
 **Python sandbox**: Explicit protection, use `workflow.unsafe.imports_passed_through()` for libraries
 **TypeScript sandbox**: V8 isolation, automatic replacements, use type-only imports for activities
+**Go**: No sandbox - use `workflowcheck` static analysis tool and code review
 
 ## Language Selection
 
@@ -85,16 +87,24 @@ See `references/core/determinism.md` for detailed explanation.
 - Webpack bundling for workflows
 - See `references/typescript/typescript.md`
 
+### Go
+- Regular functions with `workflow.Context` or `context.Context`
+- No sandbox - determinism via code review and static analysis
+- Use `workflow.Go()` instead of `go` keyword
+- Use `workflow.Channel` instead of Go channels
+- Run `workflowcheck ./...` in CI
+- See `references/go/go.md`
+
 ## Pattern Index
 
-| Pattern | Use Case | Python | TypeScript |
-|---------|----------|--------|------------|
-| **Signals** | Fire-and-forget events to running workflow | `references/python/patterns.md` | `references/typescript/patterns.md` |
-| **Queries** | Read-only state inspection | `references/python/patterns.md` | `references/typescript/patterns.md` |
-| **Updates** | Synchronous state modification with response | `references/python/patterns.md` | `references/typescript/patterns.md` |
-| **Child Workflows** | Break down large workflows, isolate failures | `references/python/patterns.md` | `references/typescript/patterns.md` |
-| **Continue-as-New** | Prevent unbounded history growth | `references/python/advanced-features.md` | `references/typescript/advanced-features.md` |
-| **Saga** | Distributed transactions with compensation | `references/python/patterns.md` | `references/typescript/patterns.md` |
+| Pattern | Use Case | Python | TypeScript | Go |
+|---------|----------|--------|------------|-----|
+| **Signals** | Fire-and-forget events to running workflow | `references/python/patterns.md` | `references/typescript/patterns.md` | `references/go/patterns.md` |
+| **Queries** | Read-only state inspection | `references/python/patterns.md` | `references/typescript/patterns.md` | `references/go/patterns.md` |
+| **Updates** | Synchronous state modification with response | `references/python/patterns.md` | `references/typescript/patterns.md` | `references/go/advanced-features.md` |
+| **Child Workflows** | Break down large workflows, isolate failures | `references/python/patterns.md` | `references/typescript/patterns.md` | `references/go/patterns.md` |
+| **Continue-as-New** | Prevent unbounded history growth | `references/python/advanced-features.md` | `references/typescript/advanced-features.md` | `references/go/patterns.md` |
+| **Saga** | Distributed transactions with compensation | `references/python/patterns.md` | `references/typescript/patterns.md` | `references/go/patterns.md` |
 
 ## Troubleshooting Quick Reference
 
@@ -187,6 +197,18 @@ Available scripts in `scripts/` for worker and workflow management:
 - **`references/typescript/advanced-features.md`** - Cancellation scopes, interceptors
 - **`references/typescript/gotchas.md`** - TypeScript-specific anti-patterns
 
+### Go References
+- **`references/go/go.md`** - Go SDK overview, quick start
+- **`references/go/determinism.md`** - workflowcheck, safe alternatives, concurrency
+- **`references/go/patterns.md`** - Go pattern implementations (signals, queries, saga)
+- **`references/go/testing.md`** - TestWorkflowEnvironment, mocking, replay testing
+- **`references/go/error-handling.md`** - ApplicationError, retry policies, idempotency
+- **`references/go/data-handling.md`** - Data converters, protobuf, encryption
+- **`references/go/observability.md`** - Logging, metrics, tracing, Search Attributes
+- **`references/go/versioning.md`** - GetVersion API, Worker Versioning
+- **`references/go/advanced-features.md`** - Continue-as-new, updates, schedules, interceptors
+- **`references/go/gotchas.md`** - Go-specific anti-patterns
+
 ## Feedback
 
 If this skill's explanations are unclear, misleading, or missing important information—or if Temporal concepts are proving unexpectedly difficult to work with—draft a GitHub issue body describing the problem encountered and what would have helped, then ask the user to file it at https://github.com/temporalio/skill-temporal-developer/issues/new. Do not file the issue autonomously.