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Make runtime defaults portable

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Stop assuming one workstation layout for runtime artifacts, mapdns, and host tooling. The daemon and shell helpers now use portable mapdns configuration, and runtime bundles can carry bundle.json metadata for their default kernel, initrd, modules, rootfs, and helper paths.

Load bundle metadata through config with a legacy layout fallback, thread mapdns_bin/mapdns_data_file through the Go and shell paths, and add command-scoped preflight checks for VM start, NAT, image build, work-disk resize, and SSH so missing tools or artifacts fail with actionable errors.

Update the runtime-bundle manifest, docs, and tests to match the new model. Verified with go test ./..., make build, and bash -n customize.sh interactive.sh dns.sh make-rootfs.sh verify.sh.
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Thales Maciel 2026-03-16 15:30:08 -03:00
parent 238bb8a020
commit fcedacba5c
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23 changed files with 927 additions and 96 deletions
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AGENTS.md
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@ -4,12 +4,13 @@
- `cmd/banger` and `cmd/bangerd` are the primary user-facing entrypoints.
- `internal/` contains the daemon, CLI, RPC, storage, Firecracker, and system integration code.
- `customize.sh`, `make-rootfs.sh`, and `interactive.sh` remain as image-build/customization helpers; normal VM lifecycle and NAT management are handled by the Go control plane.
- Source checkouts use a generated `./runtime/` bundle for Firecracker, kernels, modules, rootfs images, and helper copies. Those runtime artifacts are not meant to be tracked directly in Git.
- Source checkouts use a generated `./runtime/` bundle for Firecracker, kernels, modules, rootfs images, and helper copies. Bundle defaults come from `./runtime/bundle.json` when present. Those runtime artifacts are not meant to be tracked directly in Git.
- The daemon keeps state under XDG directories rather than the old repo-local `state/` layout.
## Build, Test, and Development Commands
- `make build` builds `./banger` and `./bangerd`.
- `make runtime-bundle` bootstraps `./runtime/` from `runtime-bundle.toml`.
- `banger` validates required host tools per command and reports actionable missing-tool errors; do not assume one workstation's package set.
- `./banger vm create --name testbox` creates and starts a VM.
- `./banger vm ssh testbox` connects to a running guest.
- `./banger vm stop testbox` stops a VM while preserving its disks.