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schemeta/docs/phase4-execution-plan.md

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Phase 4 Execution Plan

Phase 4 milestone: #3 - AAA SaaS Productization and UX Polish.

Objectives

  • Move Schemeta from prototype ergonomics to production-grade UX/UI quality.
  • Enforce measurable quality gates for beta and GA releases.
  • Sequence high-risk engine work (layout/routing) behind stable UX foundations.

Workstream Order

  1. #23 AAA-00: Plan and quality gates
  2. #15 AAA-01: Visual system redesign
  3. #16 AAA-02: Fit-to-view and viewport behavior
  4. #17 AAA-03: Layout engine v3
  5. #18 AAA-04: Routing engine v3
  6. #19 AAA-05: In-canvas editing overhaul
  7. #20 AAA-06: Diagnostics UX 2.0
  8. #21 AAA-07: Accessibility/responsive/keyboard pass
  9. #22 AAA-08: SaaS + MCP production hardening

Dependency Graph

  • #15 is prerequisite for high-fidelity baseline updates and consistent UI controls.
  • #16 depends on #15 token/layout primitives.
  • #17 depends on #16 viewport/fit behavior to evaluate perceived quality.
  • #18 depends on #17 placement decisions and semantic lanes.
  • #19 depends on #15 and should begin in parallel with late #17 work where safe.
  • #20 depends on #19 interaction model for click-to-fix workflows.
  • #21 runs continuously but final pass must occur after #15/#19/#20.
  • #22 can run in parallel, but final contract freeze occurs after #19/#20.

Critical Path

#15 -> #16 -> #17 -> #18 -> #19 -> #20 -> #21 -> #22

Risk Register

  1. Layout/routing regressions on dense circuits.
    • Mitigation: expand fixture corpus, snapshot + metric thresholds, staged rollout.
  2. Visual redesign causing interaction regressions.
    • Mitigation: preserve interaction test suite, baseline review checklist.
  3. Editor complexity inflation.
    • Mitigation: keep single source of truth for selection/edit state, strict undo invariants.
  4. API/MCP compatibility drift.
    • Mitigation: contract tests and explicit schema/api version policy enforcement.

Definition of Done (Phase 4)

  • All issues #15-#23 closed with acceptance criteria verified.
  • Release checklist passes all beta and GA quality gates.
  • Browser regression and baseline review pass on representative fixtures (including dense analog).
  • API/MCP contract tests pass with versioned compatibility notes.