---
type: sprint
number: 0
status: active
started: 2026-10-17
finished: 
hours-planned: 6
hours-logged: 2
tags: [sprint, setup]
---

# Sprint 0 — Setup & deconstruction

## Theme
Remove every barrier to practice: toolchain, fast feedback, project board, CI. After this
sprint, a practice session starts in 60 seconds and never touches configuration.

## App deliverable
`viexp` cargo project skeleton that compiles, one trivial test green, Gitea Actions CI green,
`bacon` watching check+clippy+test on save, Gitea board (project + labels + milestones) ready.

## Rust focus — the vital 20%
- What `rustc` / `cargo` / `crates.io` / `Cargo.toml` / `Cargo.lock` are and who owns which file.
- The compile cycle: `cargo check` (fast) vs `build` vs `run`; `cargo fmt`, `cargo clippy`.
- Reading a compiler error: error code (e.g. E0382), span, help hint — where to look first.

## Practice drills (20–30 min each)
- [ ] D1 — Install/verify: `rustup default stable`, `cargo --version`; run `rustup component
  add clippy rustfmt`; install `bacon` (`cargo install --locked bacon`).
- [ ] D2 — `cargo new viexp --bin`, add a `lib.rs` skeleton (src split: `main.rs` calls
  `viexp::run()`), one `#[test] fn sanity()` — make it fail, read the output, make it pass.
- [ ] D3 — Break it on purpose: introduce E0382 (move a `String`, then use it), E0308 (wrong
  type), E0384 (reassign immutable). Paste each into the ErrorJournal **with a self-correction cue**.
- [ ] D4 — Gitea CI: `.gitea/workflows/ci.yml` running `fmt --check`, `clippy -D warnings`,
  `test`. Push and watch it go green.
- [x] D5 — Gitea board: labels, milestone "Sprint 1", issues imported from Sprint-1 DoD.
  (Done 2026-10-17: 11 labels, 13 sprint milestones, issues #1–#12; kanban board still needs
  one-time manual creation in the web UI — Gitea 1.26.2 has no projects API.)

## English focus
README "Status" section (done), DevLog habit starts today, commit messages from now on:
Conventional Commits, imperative mood.

## Session rhythm (45 min)
5 min review → 30 min drill → 10 min DevLog + ErrorJournal.

## Definition of done
- [ ] `cargo bacon` shows check+test passing on save
- [ ] CI green on `main`
- [ ] ErrorJournal has ≥3 entries with cues
- [ ] Sprint-1 milestone and issues exist on Gitea
- [ ] Retro filled

## Retrospective
### Shipped
### Frustrations
### Hours logged / English notes