- README.md: project overview, quick start, build commands - CLAUDE.md: AI dev context, source tree, key conventions - ARCHITECTURE.md: full system spec covering data model, auth (password + FIDO2/U2F), gRPC sync API, REST API, SVG/JPG/PDF rendering, web UI, configuration, deployment, security - PROJECT_PLAN.md: 11 phases with discrete checkboxable steps - PROGRESS.md: decision log and completion tracking Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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PROGRESS.md — eng-pad-server Implementation Progress
This file tracks completed work and decisions. Updated after every step. See PROJECT_PLAN.md for the full step list.
Completed
(none yet)
In Progress
Phase 0: Project Setup
Decisions
- Language: Go (Metacircular standard)
- Database: SQLite via
modernc.org/sqlite(pure Go, no CGo) - Auth: Argon2id passwords + FIDO2/U2F via
go-webauthn/webauthn - gRPC auth: username/password in metadata per-request (no tokens)
- Web auth: password → bearer token in session cookie
- Rendering: SVG for web viewing, JPG/PDF for export
- Sync model: full notebook replacement (upsert), no incremental sync
- Share links: 32-byte random token, optional expiry, scoped to notebook
- Grid: not rendered server-side (tablet writing aid only)
- Coordinate system: 300 DPI canonical, scaled to 72 DPI for SVG/PDF
- FIDO2/U2F: web UI login only, not gRPC sync
- Server is read-only: mirrors tablet exactly, no content modification