banger/AGENTS.md
Thales Maciel fa95849f5a
Phase 5: kernel catalog publish flow + docs
Manual publish flow for the kernel catalog, designed for the current
no-CI, private-repo state of banger.

scripts/publish-kernel.sh <name>:
 - Reads $BANGER_KERNELS_DIR/<name>/ (the canonical layout produced by
   `banger kernel import`).
 - Pulls distro / arch / kernel_version from the local manifest.
 - Packages vmlinux + optional initrd.img + optional modules/ as
   <name>-<arch>.tar.zst with zstd -19.
 - Computes sha256 + size.
 - rclone copyto -> r2:banger-kernels/<file>.
 - HEAD-checks https://kernels.thaloco.com/<file> to catch
   public-access misconfig before declaring success.
 - jq-patches internal/kernelcat/catalog.json: replaces any prior
   entry with the same name, then sorts entries by name.
 - Prints next-step git+make commands; does not commit or rebuild
   automatically.

Environment overrides RCLONE_REMOTE / RCLONE_BUCKET / BASE_URL /
BANGER_KERNELS_DIR for non-default setups.

docs/kernel-catalog.md covers the architecture (embedded JSON +
external tarballs), end-user flow, the add/update/remove playbook,
naming and tarball-layout conventions, the trust model (sha256 in
embedded catalog catches transport/swap; no signing yet), and where
the bucket lives.

README.md gains a kernel-catalog example next to the existing image
register example. AGENTS.md points at publish-kernel.sh and the docs.

.gitignore now excludes .env so accidental drops of R2 credentials
don't follow into commits.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-16 15:56:56 -03:00

57 lines
2.9 KiB
Markdown

# Repository Guidelines
Always run `make build` before commit.
## Project Structure
- `cmd/banger` and `cmd/bangerd` are the main user entrypoints.
- `internal/` contains the daemon, CLI, RPC, storage, Firecracker integration, guest helpers, and the experimental web UI.
- `internal/daemon/` is the composition root; pure helpers live in its subpackages (`opstate`, `dmsnap`, `fcproc`, `imagemgr`, `session`, `workspace`). See `internal/daemon/ARCHITECTURE.md`.
- `scripts/` contains explicit manual helper workflows for rootfs and kernel preparation.
- `build/bin/` is the canonical source-checkout build output.
- `build/manual/` is the canonical source-checkout location for manual rootfs/kernel artifacts.
## Build and Test
- `make build` builds `./build/bin/banger`, `./build/bin/bangerd`, and `./build/bin/banger-vsock-agent`.
- `make test` runs `go test ./...`.
- `./build/bin/banger doctor` checks host readiness.
- `./build/bin/banger image build --from-image <image>` builds a managed image from an existing registered image.
- `./build/bin/banger image register ...` registers an unmanaged host-side image stack.
- `./build/bin/banger image promote <image>` copies an unmanaged image into daemon-owned managed artifacts.
- `make void-kernel`, `make rootfs-void`, and `make void-register` drive the experimental Void flow under `./build/manual`.
- `scripts/publish-kernel.sh <name>` packages a locally-imported kernel and uploads it to the catalog; see `docs/kernel-catalog.md`.
## Image Model
- Managed images own the full boot set: rootfs, optional work-seed, kernel, optional initrd, and optional modules.
- There is no runtime bundle and no auto-registered default image from disk paths.
- `default_image_name` selects a registered image only.
## Config
- Config lives at `~/.config/banger/config.toml`.
- Firecracker comes from `PATH` by default, or `firecracker_bin`.
- SSH uses `ssh_key_path` or an auto-managed default key at `~/.config/banger/ssh/id_ed25519`.
## Coding Style
- Prefer small, direct Go code and standard library solutions.
- Keep shell scripts strict with `set -euo pipefail`.
- Use `gofmt` for Go formatting.
- When a CLI accepts either an inline string or a file input, always prefer the file-based form.
- For shell commands and AI/LLM tooling, prefer passing files as input whenever the CLI allows it.
- Create temporary files as needed to follow the file-first rule.
- Examples: use `git commit -F <file>` instead of `git commit -m <message>`, and use prompt files instead of inline prompt strings when invoking LLM CLIs.
## Testing Guidance
- Primary automated coverage is `go test ./...`.
- For lifecycle changes, smoke-test with `vm create`, `vm ssh`, `vm stop`, and `vm delete`.
- If guest provisioning changes, document whether existing images must be rebuilt or recreated.
## Security
- Do not commit secrets.
- VM workflows require `sudo` and `/dev/kvm`.
- The default SSH key is local configuration, not a checked-in runtime artifact.