SDD Upstream Feature Adoption

Prompt file imported from lichtblick-suite/lichtblick (.github/prompts/lb-feature-adopt.prompt.md). Copyright stays with the author.

Use this workflow when adopting a specific upstream feature into a downstream branch.

Inputs

• Upstream PR/commit(s)/tag introducing the feature
• Local branch target
• Optional adoption constraints

Phase 1: Specify

1. Describe the upstream feature:
   • User value
   • Technical scope
   • Dependencies
2. Define desired local outcome and acceptance criteria.

Phase 2: Plan

1. Evaluate compatibility:
   • Public/internal APIs
   • Existing local modifications
   • Performance and memory implications
2. Choose adoption approach:
   • Adopt as-is
   • Adopt with adaptation
   • Defer
   • Reject
3. Define implementation and validation plan.

Human checkpoint:

• Wait for approval on adoption decision and approach.

Phase 3: Tasks

Create concrete tasks for:

1. Code integration
2. Local adaptations
3. Test updates
4. Documentation updates

Phase 4: Implement and verify

1. Integrate feature changes.
2. Apply local adaptations with clear rationale.
3. Verify acceptance criteria and regression safety.

Output format

• Feature summary
• Compatibility analysis
• Adoption decision + rationale
• Task checklist
• Validation results
• Deferred items