Refactor Debian 13 Trixie Packer templates for LUKS support

- Removed obsolete variable files: variables-common.pkr.hcl and variables.pkr.hcl.
- Updated debian-trixie.pkr.hcl to include local values for LUKS configuration.
- Modified boot command to include LUKS arguments based on the enable_luks variable.
- Enhanced initial-setup.sh to support LUKS detection and resizing.
- Replaced preseed.cfg with preseed.cfg.pkrtpl for dynamic LUKS configuration.
- Added enable_luks variable to control LUKS encryption during image build.
- Introduced luks.pkrvars.hcl for LUKS-specific variable settings.
- Updated mise.toml to support new variable file argument for Packer builds.

debian/13-trixie/http/preseed.cfg.pkrtpl

@@ -58,7 +58,7 @@ d-i preseed/early_command string \
 
 # "crypto" = LVM within an encrypted partition  [oai_citation:3‡Debian](https://www.debian.org/releases/stable/amd64/apbs04.en.html)
 # "lvm" = LVM without encryption
-d-i partman-auto/method string lvm
+d-i partman-auto/method string ${enable_luks ? "crypto" : "lvm"}
 d-i partman-auto-lvm/guided_size string max
 d-i partman-auto-lvm/new_vg_name string vg0
 
@@ -72,13 +72,15 @@ d-i partman-lvm/confirm_nooverwrite boolean true
 d-i partman-md/confirm boolean true
 d-i partman-md/confirm_nooverwrite boolean true
 
-# # LUKS password
-# # LUKS passphrase is set via kernel cmdline in debian-trixie.pkr.hcl; these lines are ignored but left here for reference:
-# # d-i partman-crypto/passphrase password "$PACKER_LUKS_PASS"
-# # d-i partman-crypto/passphrase-again password "$PACKER_LUKS_PASS"
-# d-i partman-crypto/weak_passphrase boolean true
-# d-i partman-crypto/confirm boolean true
-# d-i partman-auto-crypto/erase_disks boolean false
+%{ if enable_luks ~}
+# LUKS password
+# LUKS passphrase is set via kernel cmdline in debian-trixie.pkr.hcl; these lines are ignored but left here for reference:
+# d-i partman-crypto/passphrase password "$PACKER_LUKS_PASS"
+# d-i partman-crypto/passphrase-again password "$PACKER_LUKS_PASS"
+d-i partman-crypto/weak_passphrase boolean true
+d-i partman-crypto/confirm boolean true
+d-i partman-auto-crypto/erase_disks boolean false
+%{ endif ~}
 
 # Ensure GPT
 d-i partman-partitioning/choose_label select gpt
@@ -96,9 +98,9 @@ d-i partman-basicfilesystems/no_swap seen true
 
 # Custom recipe
 # NOTE: Avoid putting comments inside this expert_recipe block; d-i can ignore it.  [oai_citation:4‡Unix & Linux Stack Exchange](https://unix.stackexchange.com/questions/796185/debian-preseed-install-auto-creates-swap)
-d-i partman-auto/choose_recipe select luks-lvm
+d-i partman-auto/choose_recipe select debian-lvm
 d-i partman-auto/expert_recipe string \
-  luks-lvm :: \
+  debian-lvm :: \
     1075 1075 1075 fat32 \
       $primary{ } \
       $iflabel{ gpt } \
@@ -151,7 +153,8 @@ d-i grub-installer/bootdev string default
 # 2) Enable root ssh login (same intent as your original)
 d-i preseed/late_command string \
   lvremove -f /dev/vg0/reserved || true; \
-  in-target sed -i 's/^#PermitRootLogin .*/PermitRootLogin yes/' /etc/ssh/sshd_config || true
+  in-target sed -i 's/^#PermitRootLogin .*/PermitRootLogin yes/' /etc/ssh/sshd_config || true%{ if enable_luks }; \
+  in-target curl -X POST "$INSTALL_FINISHED_INFORM_URL"%{ endif }
 
 # Eject the installation media before rebooting
 d-i cdrom-detect/eject boolean true