laneweaverTMS Feature Workflow

An orchestration guide for implementing end-to-end features in laneweaverTMS. This skill coordinates other skills and agents rather than duplicating their content.

When to Use This Skill

Use when:

• Implementing a new feature that spans multiple layers (database, backend, frontend)
• Adding a new entity/resource to the system
• Planning feature implementation order
• Deciding which skills or agents to invoke

Pre-Implementation Checklist

Before writing any code, ensure:

Requirement	Questions to Answer
Feature Requirements	What does the user story say? What are the acceptance criteria?
Database Schema	New tables needed? New columns on existing tables? New ENUMs?
API Endpoints	What REST endpoints are needed? Request/response shapes?
Frontend Components	New pages? New components? Which existing patterns apply?
Domain Knowledge	Any freight-specific terminology or business logic involved?

Step-by-Step Implementation Workflow

Step 1: Database Schema (If Changes Needed)

When: New tables, columns, ENUMs, or constraints required.

How to Execute:

1. Invoke schema-migration-agent for database work
   • Isolates the 500KB erd.sql context
   • Generates migration files in supabase/migrations/
2. Use supabase:laneweaver-database-design skill for conventions

Output: Migration file(s) in supabase/migrations/

Key Conventions (see supabase:laneweaver-database-design for details):

• UUID primary keys (except users table)
• Required audit columns: created_at, updated_at, created_by, updated_by, deleted_at, deleted_by
• Soft deletes via deleted_at column
• Manual FK indexes (PostgreSQL does not auto-index)

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Step 2: Models (/internal/models/)

When: Always, for any new entity or DTO.

How to Execute:

1. Use golang-orchestrator:backend-service-patterns skill
2. Create Go structs with proper tags

Pattern:

type MyEntity struct {
    ID        string     `db:"id" json:"id"`
    Name      string     `db:"name" json:"name"`
    Status    MyStatus   `db:"status" json:"status"`

    // Audit fields (always include)
    CreatedAt time.Time  `db:"created_at" json:"createdAt"`
    UpdatedAt time.Time  `db:"updated_at" json:"updatedAt"`
    CreatedBy *int32     `db:"created_by" json:"createdBy,omitempty"`
    UpdatedBy *int32     `db:"updated_by" json:"updatedBy,omitempty"`
    DeletedAt *time.Time `db:"deleted_at" json:"deletedAt,omitempty"`
}

Output: Model file in /internal/models/

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Step 3: Repository (/internal/repository/)

When: Always, for any new entity.

How to Execute:

1. Use golang-orchestrator:backend-service-patterns skill
2. Implement SQL queries with soft delete handling

Key Requirements:

• All queries include WHERE deleted_at IS NULL
• Use transactions for multi-table operations
• Use QueryBuilder for complex filters
• Handle pgx.ErrNoRows for not-found cases

Output: Repository file in /internal/repository/

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Step 4: Service (/internal/services/)

When: Always, for any new entity or business operation.

How to Execute:

1. Use golang-orchestrator:backend-service-patterns skill
2. Implement business logic and validation

Key Requirements:

• Validate requests at method start
• Return ValidationErrors for business rule failures
• Orchestrate multiple repositories as needed
• Use context.Context throughout

Output: Service file in /internal/services/

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Step 5: Handler (/internal/handlers/)

When: Always, for any new API endpoint.

How to Execute:

1. Use golang-orchestrator:backend-service-patterns skill
2. Implement HTTP handlers with Echo

Key Requirements:

• Bind request with c.Bind()
• Return APIResponse wrapper for all responses
• Add Swagger/OpenAPI annotations
• Type-assert ValidationErrors for 400 responses

Output: Handler file in /internal/handlers/

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Step 6: Router (/internal/router/)

When: Always, for any new endpoint.

How to Execute:

1. Register endpoints in Setup function
2. Follow RESTful conventions

Pattern:

// In router/router.go Setup function
myEntities := api.Group("/my-entities")
myEntities.GET("", myEntityHandler.List)
myEntities.POST("", myEntityHandler.Create)
myEntities.GET("/:id", myEntityHandler.GetByID)
myEntities.PUT("/:id", myEntityHandler.Update)
myEntities.DELETE("/:id", myEntityHandler.Delete)

Output: Updated /internal/router/router.go

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Step 7: Frontend (If UI Needed)

When: Feature requires user-facing components.

How to Execute:

1. Invoke frontend-component-agent for Svelte work
   • Isolates frontend context (different mental model from Go)
   • Knows Svelte 5, SvelteKit, shadcn-svelte patterns
2. Use svelte5-runes skill for reactivity patterns
3. Use shadcn-svelte-skill for UI components

Output: Svelte components in frontend project

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Skill Reference Matrix

Choose the right skill for each concern:

Concern	Skill to Use
Database tables, migrations, indexes	supabase:laneweaver-database-design
Row-level security policies	supabase:supabase-rls-policy
Go handlers, services, repositories	golang-orchestrator:backend-service-patterns
Go idioms and best practices	golang-orchestrator:effective-go
Echo router and middleware	golang-orchestrator:echo-router-skill
Svelte 5 reactivity ($state, $derived)	svelte5-runes
UI components (buttons, forms, dialogs)	shadcn-svelte-skill
Freight industry terminology	freight-domain-glossary
Load status lifecycle	load-lifecycle-patterns

Agent Reference Matrix

Use agents for context isolation:

Agent	When to Use	Why Isolate?
schema-migration-agent	Database schema work	Isolates 500KB erd.sql from main context
frontend-component-agent	Svelte component work	Different mental model (reactive vs imperative)

Implementation Order Rules

1. Database first: Schema changes must exist before Go code references them
2. Models before repository: Structs must exist before SQL mapping
3. Repository before service: Data access before business logic
4. Service before handler: Business logic before HTTP layer
5. Handler before router: Handler must exist before route registration
6. Backend before frontend: API must exist before UI calls it

Common Feature Patterns

Adding a New Entity (CRUD)

1. schema-migration-agent → Create table + indexes
2. /internal/models/ → Entity struct + DTOs
3. /internal/repository/ → CRUD queries
4. /internal/services/ → Business logic + validation
5. /internal/handlers/ → HTTP handlers
6. /internal/router/ → Route registration
7. frontend-component-agent → List page + form (if UI needed)

Adding a Field to Existing Entity

1. schema-migration-agent → ALTER TABLE + index (if needed)
2. /internal/models/ → Add field to struct
3. /internal/repository/ → Update queries
4. /internal/handlers/ → Update DTOs (if exposed via API)

Adding a Status Workflow

1. schema-migration-agent → Create ENUM + add column
2. /internal/models/ → Define enum constants + validation
3. /internal/services/ → Implement state machine logic
4. Use load-lifecycle-patterns skill for reference

Anti-Patterns to Avoid

Anti-Pattern	Why It Fails	Do This Instead
Skipping database migration	Go code references non-existent columns	Always start with schema
Business logic in handlers	Untestable, duplicated code	Move logic to services
Raw SQL strings everywhere	SQL injection, hard to maintain	Use parameterized queries
Ignoring soft deletes	Orphaned data, broken queries	Always check deleted_at IS NULL
Frontend before API	UI calls non-existent endpoints	Build API first

Quick Decision Guide

Need database changes? → schema-migration-agent + supabase:laneweaver-database-design
Need Go backend code? → golang-orchestrator:backend-service-patterns
Need frontend UI? → frontend-component-agent + svelte5-runes + shadcn-svelte-skill
Unclear on freight terms? → freight-domain-glossary
Implementing load states? → load-lifecycle-patterns

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Remember: This skill orchestrates other skills. When you need implementation details, invoke the appropriate specialized skill rather than trying to implement from memory.