Gitr Phase 1 Mapping

This repository currently reimplements the first core Gogs slice instead of the full product.

Gogs reference modules:

internal/conf/conf.go Rust: src/conf.rs
internal/repox/repox.go Rust: src/repox.rs
internal/database/users.go Rust: src/db.rs, src/service.rs
internal/database/repositories.go Rust: src/db.rs, src/service.rs
internal/database/repo.go repository initialization path Rust: src/git.rs, src/service.rs
cmd/gogs/web.go minimal API surface only Rust: src/http.rs

Implemented in this phase:

Config loading from gitr.toml or defaults
SQLite-backed user metadata
SQLite-backed repository metadata
Repository path derivation by owner/name
Bare Git repository initialization
Optional auto-init with a first commit
Minimal JSON APIs for user and repository creation/query

Not implemented yet:

Session/authentication flows
SSH serving and hooks
Issues, pulls, wiki, mirrors, actions, permissions
HTML rendering and frontend routes