Symphony Scaffold

Symphony Scaffold

When to use

• User asks to scaffold a new Symphony implementation
• User wants to start a new Symphony project from scratch
• User asks to initialize Symphony for a specific stack (TypeScript, Python, or Go)

When NOT to use

• Implementing a single component in an existing project -> use Symphony Component skill
• Checking conformance of an existing implementation -> use Symphony Conformance skill

Steps

1. Confirm target stack

Ask the user to confirm which stack they are targeting:

• TypeScript
• Python
• Go

Do not proceed until the stack is confirmed.

2. Read the stack guide

Read the appropriate stack guide before writing any files:

docs/stacks/typescript.md   (for TypeScript)
docs/stacks/python.md       (for Python)
docs/stacks/go.md           (for Go)

3. Create directory structure per LAYERS.md

Read docs/architecture/LAYERS.md and create the four-layer directory structure:

src/
├── domain/          <- Issue, Workspace, RunAttempt domain models
├── application/     <- Orchestrator, WorkspaceManager
├── infrastructure/  <- LinearApiClient, FileSystem, Git, Logger
└── presentation/    <- CLI entrypoint, HTTP handler (if applicable)

Adapt directory names to the stack's idiomatic conventions (e.g., cmd/ for Go).

4. Set up config loading per stack guide

• Create .env.example with all required variables from AGENTS.md § Build & Test
• Implement typed config loading that fails fast with a clear error message listing missing variables and where to set them
• Reference the stack guide for the idiomatic config pattern

5. Create skeleton implementations of all 7 Symphony components

Create skeleton files for each component. Each file must compile/parse without errors but may leave method bodies as stubs. Reference the component specs:

6. Set up linter config

Read the enforcement guide for the chosen stack and create the linter config file:

docs/architecture/enforcement/typescript.md
docs/architecture/enforcement/python.md
docs/architecture/enforcement/go.md

Install required tools as described in the guide. Add a pre-commit hook that runs ./scripts/harness/validate.sh.

7. Verify with validate.sh

Run ./scripts/harness/validate.sh and confirm all checks pass. Fix any errors before declaring the scaffold complete.

References

• docs/stacks/ — stack-specific setup guides
• docs/specs/ — Symphony component interface specs
• docs/architecture/LAYERS.md — dependency direction rules
• docs/architecture/CONSTRAINTS.md — forbidden patterns
• docs/architecture/enforcement/ — linter config per stack
• AGENTS.md — conventions and required environment variables