feat: Vue 3 frontend and FastAPI REST layer
- app/rest.py: FastAPI app wrapping search/diagnose/sources with CORS
- web/: Vue 3 + Vite + UnoCSS + Pinia frontend at port 8535
- LogSearchView: sidebar filters (source, severity, limit) + FTS search
- DiagnoseView: layered symptom investigation matching MCP diagnose tool
- SourcesView: corpus table with entry count, error count, time range
- LogEntryRow: severity badge, pattern chips, repeat count, timestamp
- StatusDot: live API health indicator in nav
- scripts/start_dev.sh: launch FastAPI (:8534) + Vite dev server (:8535)
- .gitignore: add web/node_modules/ and web/dist/
- Caddy: /turnstone* route added to menagerie.circuitforge.tech block
(API → :8534 with /turnstone strip, SPA fallback → :8535)
pyr0ball
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