docs: document missing LIMA_CIDATA_* environment variables

The internals page only listed a subset of the LIMA_CIDATA_* variables
that lima writes into the guest's `lima.env`. Adds entries for every
variable that was being emitted by `pkg/cidata/cidata.TEMPLATE.d/lima.env`
but not yet documented:

- additional-disk vars (DISKS, DISK_%d_NAME / DEVICE / FORMAT / FSTYPE / FSARGS)
- yq-provision vars (YQ_PROVISION_%08d_FORMAT / OWNER / PATH / PERMISSIONS)
- GUEST_INSTALL_PREFIX, UPGRADE_PACKAGES
- ROSETTA_ENABLED, ROSETTA_BINFMT
- SKIP_DEFAULT_DEPENDENCY_RESOLUTION
- VMTYPE, VSOCK_PORT, VIRTIO_PORT
- PLAIN, NO_CLOUD_INIT

The new entries are grouped next to the related existing entries
(disks near mounts, yq-provision near datafile, rosetta/vmtype/etc.
after the SLIRP/DNS block) so the section reads in the same order as
`lima.env` itself.

Closes #2791

Signed-off-by: Bitalizer <23104115+bitalizer@users.noreply.github.com>

Author: bitalizer

website/content/en/docs/dev/internals.md

@@ -173,29 +173,49 @@ The volume label is "cidata", as defined by [cloud-init NoCloud](https://docs.cl
 ### Environment variables
 - `LIMA_CIDATA_DEBUG`: the value of the `--debug` flag of the `limactl start` command.
 - `LIMA_CIDATA_IID`: the instance ID, regenerated on every boot.
-- `LIMA_CIDATA_NAME`: the lima instance name
+- `LIMA_CIDATA_NAME`: the lima instance name.
 - `LIMA_CIDATA_MNT`: the mount point of the disk. `/mnt/lima-cidata`.
-- `LIMA_CIDATA_USER`: the username string
-- `LIMA_CIDATA_UID`: the numeric UID
-- `LIMA_CIDATA_COMMENT`: the full name or comment string
-- `LIMA_CIDATA_HOME`: the guest home directory
-- `LIMA_CIDATA_SHELL`: the guest login shell
-- `LIMA_CIDATA_HOSTHOME_MOUNTPOINT`: the mount point of the host home directory, or empty if not mounted
-- `LIMA_CIDATA_MOUNTS`: the number of the Lima mounts
-- `LIMA_CIDATA_MOUNTS_%d_MOUNTPOINT`: the N-th mount point of Lima mounts (N=0, 1, ...)
-- `LIMA_CIDATA_MOUNTTYPE`: the type of the Lima mounts ("reverse-sshfs", "9p", ...)
+- `LIMA_CIDATA_USER`: the username string.
+- `LIMA_CIDATA_UID`: the numeric UID.
+- `LIMA_CIDATA_COMMENT`: the full name or comment string.
+- `LIMA_CIDATA_HOME`: the guest home directory.
+- `LIMA_CIDATA_SHELL`: the guest login shell.
+- `LIMA_CIDATA_HOSTHOME_MOUNTPOINT`: the mount point of the host home directory, or empty if not mounted.
+- `LIMA_CIDATA_MOUNTS`: the number of the Lima mounts.
+- `LIMA_CIDATA_MOUNTS_%d_MOUNTPOINT`: the N-th mount point of Lima mounts (N=0, 1, ...).
+- `LIMA_CIDATA_MOUNTTYPE`: the type of the Lima mounts ("reverse-sshfs", "9p", ...).
+- `LIMA_CIDATA_DISKS`: the number of additional disks attached to the instance.
+- `LIMA_CIDATA_DISK_%d_NAME`: the name of the N-th additional disk (N=0, 1, ...).
+- `LIMA_CIDATA_DISK_%d_DEVICE`: the guest block device path of the N-th additional disk.
+- `LIMA_CIDATA_DISK_%d_FORMAT`: set to "true" when the N-th additional disk should be formatted on first boot.
+- `LIMA_CIDATA_DISK_%d_FSTYPE`: the filesystem type to format the N-th additional disk with (e.g. `ext4`).
+- `LIMA_CIDATA_DISK_%d_FSARGS`: extra arguments passed to mkfs for the N-th additional disk (space-separated).
 - `LIMA_CIDATA_DATAFILE_%08d_OVERWRITE`: set to "true" if the datafile should be overwritten if it already exists.
 - `LIMA_CIDATA_DATAFILE_%08d_OWNER`: set to the owner of the datafile.
 - `LIMA_CIDATA_DATAFILE_%08d_PATH`: set to the path the datafile should be copied to.
 - `LIMA_CIDATA_DATAFILE_%08d_PERMISSIONS`: set to the file permissions (in octal) for the datafile.
-- `LIMA_CIDATA_CONTAINERD_USER`: set to "1" if rootless containerd to be set up
-- `LIMA_CIDATA_CONTAINERD_SYSTEM`: set to "1" if system-wide containerd to be set up
-- `LIMA_CIDATA_CONTAINERD_ARCHIVE`: the name of the containerd archive. `nerdctl-full.tgz`
+- `LIMA_CIDATA_YQ_PROVISION_%08d_FORMAT`: the input format ("yaml" or "json") for the N-th yq provision step.
+- `LIMA_CIDATA_YQ_PROVISION_%08d_OWNER`: the owner (user[:group]) for the file produced by the N-th yq provision step.
+- `LIMA_CIDATA_YQ_PROVISION_%08d_PATH`: the destination path for the N-th yq provision step.
+- `LIMA_CIDATA_YQ_PROVISION_%08d_PERMISSIONS`: the file permissions (in octal) for the N-th yq provision step.
+- `LIMA_CIDATA_GUEST_INSTALL_PREFIX`: the install prefix used for guest tools (e.g. `/usr/local`).
+- `LIMA_CIDATA_UPGRADE_PACKAGES`: set to "1" if `upgradePackages` is enabled in `lima.yaml`, empty otherwise.
+- `LIMA_CIDATA_CONTAINERD_USER`: set to "1" if rootless containerd to be set up.
+- `LIMA_CIDATA_CONTAINERD_SYSTEM`: set to "1" if system-wide containerd to be set up.
+- `LIMA_CIDATA_CONTAINERD_ARCHIVE`: the name of the containerd archive. `nerdctl-full.tgz`.
 - `LIMA_CIDATA_SLIRP_GATEWAY`: set to the IP address of the host on the SLIRP network. `192.168.5.2`.
 - `LIMA_CIDATA_SLIRP_DNS`: set to the IP address of the DNS on the SLIRP network. `192.168.5.3`.
 - `LIMA_CIDATA_SLIRP_IP_ADDRESS`: set to the IP address of the guest on the SLIRP network. `192.168.5.15`.
 - `LIMA_CIDATA_UDP_DNS_LOCAL_PORT`: set to the udp port number of the hostagent dns server (or 0 when not enabled).
 - `LIMA_CIDATA_TCP_DNS_LOCAL_PORT`: set to the tcp port number of the hostagent dns server (or 0 when not enabled).
+- `LIMA_CIDATA_ROSETTA_ENABLED`: set to "true" if Rosetta x86_64 emulation is enabled in the guest (Apple Silicon, `vz` driver).
+- `LIMA_CIDATA_ROSETTA_BINFMT`: set to "true" if the guest should register the Rosetta binfmt_misc handler at boot.
+- `LIMA_CIDATA_SKIP_DEFAULT_DEPENDENCY_RESOLUTION`: set to "1" to skip Lima's built-in package dependency resolution during provisioning, empty otherwise.
+- `LIMA_CIDATA_VMTYPE`: the VM driver type ("qemu", "vz", "wsl2", ...), used to conditionally enable VM-specific behavior (e.g. virtiofs mounts on `vz`).
+- `LIMA_CIDATA_VSOCK_PORT`: the vsock port used by the guest agent (0 when vsock is not used).
+- `LIMA_CIDATA_VIRTIO_PORT`: the virtio-serial port name used by the guest agent (empty when virtio-serial is not used).
+- `LIMA_CIDATA_PLAIN`: set to "1" when the instance is in plain mode (no mounts, port forwarding, or containerd), empty otherwise.
+- `LIMA_CIDATA_NO_CLOUD_INIT`: set to "1" if cloud-init should be skipped on this boot, empty otherwise.
 
 # VM lifecycle