feat: scaffold SvelteKit project with Tailwind, TypeScript, ESLint, Prettier

Initialize the llm-multiverse-ui project with:
- SvelteKit + Svelte 5 (runes mode enabled)
- Tailwind CSS v4 via @tailwindcss/vite plugin
- TypeScript strict mode
- ESLint 9 flat config with svelte and typescript-eslint plugins
- Prettier with svelte plugin
- Directory structure: src/lib/components/, src/lib/services/
- All required scripts: dev, build, preview, lint, format, check

Closes #1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/commands/implement-story.md

@@ -20,6 +20,7 @@ An implementation plan MUST exist at `implementation-plans/issue-$ARGUMENTS.md`
 ### 1. Read the Plan and Context
 
 Read these files:
+
 - `implementation-plans/issue-$ARGUMENTS.md` — the implementation plan
 - `CLAUDE.md` — coding standards (if it exists)
 - `package.json` — project dependencies and scripts
@@ -64,6 +65,7 @@ Follow the plan's implementation steps in order:
 ### 6. Log Deviations
 
 If you deviate from the plan (different approach, additional files, skipped steps), document each deviation in the plan's **Deviation Log** section with:
+
 - What changed
 - Why it changed
 
@@ -81,6 +83,7 @@ Adapt commands based on what's available in `package.json`. Fix any failures bef
 ### 8. Commit
 
 Stage all changed files and commit with a descriptive message:
+
 ```
 feat: <short description of what was implemented> (issue #$ARGUMENTS)
 ```
@@ -90,6 +93,7 @@ Use conventional commit prefixes: `feat:`, `fix:`, `chore:`, `refactor:`, `test:
 ### 9. Output Summary
 
 Display:
+
 - Files created and modified (with counts)
 - Tests added (count)
 - Deviations from plan (if any)