Implementation Plan: Integrate SvelteKit

Branch: 004-integrate-svelte-kit | Date: 2025-12-20 | Spec: specs/004-integrate-svelte-kit/spec.md Input: Feature specification from /specs/004-integrate-svelte-kit/spec.md

Summary

Integrate SvelteKit as the primary frontend framework to provide seamless navigation, improved data loading, and a unified layout. The application will be configured as a Static Single Page Application (SPA) to be served by the existing Python backend, preserving all existing functionality while leveraging modern framework features like file-based routing and shared layouts.

Technical Context

Language/Version: Python 3.9+, Node.js 18+
Primary Dependencies: SvelteKit, FastAPI, Tailwind CSS (inferred from existing frontend)
Storage: N/A (Frontend integration)
Testing: pytest (Backend), Vitest/Playwright (Frontend - SvelteKit defaults)
Target Platform: Linux server (SPA served by backend) Project Type: Web application (frontend + backend)
Performance Goals: Page transition time < 200ms (SC-001)
Constraints: Must be deployable as a Static SPA (FR-003), no Node.js server in production (Assumptions)
Scale/Scope: Migration of existing Dashboard and Settings pages

Constitution Check

GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.

Principle Compliance: The project constitution is currently in a template state. No specific violations identified.
Architecture Alignment: The move to SvelteKit aligns with the goal of using modern frontend patterns while maintaining the "SPA served by backend" constraint.

Project Structure

Documentation (this feature)

specs/004-integrate-svelte-kit/
├── plan.md              # This file (/speckit.plan command output)
├── research.md          # Phase 0 output (/speckit.plan command)
├── data-model.md        # Phase 1 output (/speckit.plan command)
├── quickstart.md        # Phase 1 output (/speckit.plan command)
├── contracts/           # Phase 1 output (/speckit.plan command)
└── tasks.md             # Phase 2 output (/speckit.tasks command - NOT created by /speckit.plan)

Source Code (repository root)

backend/
├── src/
│   ├── models/
│   ├── services/
│   └── api/
└── tests/

frontend/
├── src/
│   ├── lib/
│   ├── routes/          # SvelteKit file-based routing
│   └── app.html
├── static/
└── tests/

Structure Decision: Option 2: Web application. The project already has backend/ and frontend/ directories. SvelteKit will be integrated into the frontend/ directory, replacing the current Svelte setup.

Complexity Tracking

Fill ONLY if Constitution Check has violations that must be justified

Violation	Why Needed	Simpler Alternative Rejected Because
None	N/A	N/A

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