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feature-build

Implements features systematically from task lists and design specifications.

Synopsis

/feature-build <feature-id> [milestone-id]

/rp1-dev/feature-build <feature-id> [milestone-id]

Description

The feature-build command implements features from pre-defined task lists. It follows the design specification, runs verification for each task, updates task status, and documents implementation details.

Parameters

Parameter Position Required Default Description
FEATURE_ID $1 Yes - Feature identifier
MILESTONE_ID $2 No All Specific milestone to build

Prerequisites

  • requirements.md in .rp1/work/features/<feature-id>/
  • design.md in .rp1/work/features/<feature-id>/
  • tasks.md or tasks/milestone-N.md files

Output

The command:

  • Implements code according to design
  • Updates task files with completion status
  • Writes implementation summaries for each task
  • Creates field-notes.md for discoveries
  • Runs verification (tests, linting) after each task

Examples

Build Entire Feature

/feature-build user-auth

/rp1-dev/feature-build user-auth

Build Specific Milestone

/feature-build user-auth 2

/rp1-dev/feature-build user-auth 2

Task Workflow

For each task:

  1. Read task description and acceptance criteria
  2. Implement according to design specification
  3. Run format/lint commands
  4. Run tests
  5. Update task file with implementation summary
  6. Document any discoveries in field notes

Field Notes

During implementation, the command documents:

  • Design deviations (with justification)
  • Codebase discoveries (undocumented patterns)
  • User clarifications received
  • Workarounds applied

These notes inform the verification phase.

See Also