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# Project Layout
This is the integrated package layout after M26. Paths below exist in the
repository; scenario descriptions name current owners. Add modules when a
cohesive responsibility needs them, not as placeholders.
The repository has one Cargo package with a binary (`src/main.rs`) and a library
(`src/lib.rs`). Startup and process exit remain in `main.rs`; testable
application logic and the TUI are library modules. The library target is not a
separately published package.
```text
Cargo.toml
Cargo.lock
rust-toolchain.toml
AGENTS.md
CONTEXT.md
PLANS.md
README.md
src/
main.rs # Startup, arguments, process exit
lib.rs # Library modules; test-only container driver gate
startup.rs # Root boundary, settings/store loading, session entry
config.rs # Settings validation and executable-relative paths
domain.rs # Client projection, address allocation/reservations, apply knowledge
app.rs # Application facade, session, and public operation types
app/
draft.rs # Coordinated document/client/vault draft replacements
first_delivery.rs # Session-local one-use capability and retry state
first_file.rs # First-delivery file and optional QR scenario
reissue.rs # Password-per-action saved-client reissue
read_model.rs # Secret-free application facts and per-action eligibility
commit.rs # Backup, saved install, and Commit publication
restore.rs # Preview, reservation rebuild, and confirmed saved replacement
backups.rs # Manual/pre-operation backup and archive listing
restart.rs # Restart preview, backup/job/verify/publication sequence
wireguard.rs # Server configuration module boundary
wireguard/
document.rs # Lossless parse, peer inspection and document authority
edit.rs # Byte-preserving peer and metadata edits
metadata.rs # Managed comment grammar and metadata validation
vault.rs # Vault format, encryption, key matching and retrieval
vault/
source.rs # Read-only configured client-source access
import.rs # Client-file reconciliation and encrypted import
persistence.rs # Saved-file installation, recovery and state codec
backup.rs # Versioned archive encoding, parsing and preview
runtime.rs # Runtime observations, peer projections and comparison
runtime/
netlink.rs # Bounded Generic Netlink WireGuard reader
transport.rs # Read-only runtime transport
service.rs # Systemd request and job completion adapter
service/
dbus.rs # D-Bus systemd implementation
delivery.rs # Client configuration rendering and adapter boundary
delivery/
files.rs # Secure client file publication
qr.rs # Terminal QR generation
tui.rs # TUI entry and session lifecycle
tui/
state.rs # Screens, selection, UI generations and navigation
events.rs # Typed commands, worker queue and lifecycle
events/
executor.rs # Application command adaptation and prepared contexts
forms.rs # Short-lived form inputs and sensitive commands
render.rs # Visual strings, styles, wrapping and layout
terminal.rs # Terminal setup, event loop and cleanup
container_driver.rs # Test-only Alpine scenario driver (`cfg(test)`)
tests/
config_preservation.rs # Synthetic byte-preservation behavior
commit_restore.rs # Persistence, backups, restore and runtime isolation
client_delivery.rs # First delivery, retry, reissue and lifecycle behavior
runtime_restart.rs # Restart scenario behavior using controlled adapters
vault_import.rs # Import and reconciliation behavior
tui_workflow.rs # Worker-level TUI workflows and synthetic PTY checks
testcontainers_wireguard.rs # Explicitly selected, ignored Alpine integration suite
support/ # Shared fixtures, adapters and container harness
fixtures/wireguard/ # Synthetic server configuration
containers/alpine/ # Pinned Alpine runtime image and readiness support
vm/ # Guarded disposable-VM preparation/test scripts
config/
wireguard-admin.example.toml # Safe distributable example settings
docs/
SPEC.md
PROJECT_LAYOUT.md
architecture/domain-refactoring.md
adr/
target/ # Cargo output; never commit
```
## Ownership rules
- `Application` is the public facade. Scenario ordering belongs in `src/app/`
owners; the facade delegates without transferring authority to the TUI.
- The server `ConfigDocument` is authoritative for peers and metadata.
`ClientStates` is only the manageable-client projection. Editing preserves
unowned bytes and comments.
- Domain logic does not perform file, crypto, runtime, service, or rendering
work. Persistence owns installed state; backup owns archive encoding;
runtime owns observations/comparison; service owns systemd calls.
- `app/read_model.rs` supplies secret-free facts and action eligibility.
TUI state owns selection/navigation/generation; the executor binds prepared
continuations and calls application operations; renderers own presentation.
- Keep module internals private or `pub(crate)` where possible. Public facade
APIs retained for integration fixture setup are documented with their caller
audit in [the architecture map](architecture/domain-refactoring.md).
- Keep focused unit tests beside their modules and cross-module behavior in
`tests/`. `src/container_driver.rs` is included only in the library test
harness. Its opt-in Alpine application fixture is not systemd acceptance.
- `config/` holds safe examples, not live settings. Runtime data and archives
remain outside the source tree. Do not commit live configuration, keys,
delivered client files, or generated `Backup/` data.
- Keep this map aligned with actual files and responsibility. Do not add empty
directories or speculative traits/modules.