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-# Session Context - 2026-01-19
-
-## Summary
-Major session: Added ZFS snapshot scripts, fixed grub-zfs-snap, created fully automated build-release workflow with sanity testing.
-
-## Key Accomplishments
-
-### 1. ZFS Snapshot Management Scripts
-- Copied `zfssnapshot` and `zfsrollback` from archsetup to archzfs ISO
-- Scripts now installed to `/usr/local/bin/` on live ISO and target systems
-- Added `fzf` to `install-archzfs` pacstrap (required by zfsrollback)
-- Fixed zfsrollback fzf height (40% → 70%)
-- Fixed zfsrollback to sort datasets by depth (children before parents) for proper rollback order
-- Created task in archsetup inbox to remove duplicate scripts
-
-### 2. Fixed grub-zfs-snap Syntax Error
-- **Bug:** `\$(grub-probe ...)` wrote literal string to grub.cfg
-- **Fix:** Removed backslash so command executes at config generation time
-- **File:** `custom/grub-zfs-snap` line 106
-- GRUB doesn't support bash-style `$()` command substitution
-
-### 3. Automated Sanity Test (`scripts/sanity-test.sh`)
-- Boots ISO in headless QEMU (no display)
-- Waits for SSH availability (port 2223, timeout 180s)
-- Runs 13 automated tests via SSH:
-  - ZFS module loaded
-  - ZFS/zpool commands work
-  - Custom scripts present (zfsrollback, zfssnapshot, grub-zfs-snap, etc.)
-  - fzf installed
-  - LTS kernel running
-  - archsetup directory present
-- Reports pass/fail summary
-- Fully automated - no human input required
-
-### 4. Build-Release Workflow (`scripts/build-release`)
-Complete automated workflow for ISO build and distribution:
-
-**Usage:**
-```bash
-sudo ./scripts/build-release              # Full: build, test, distribute
-sudo ./scripts/build-release --yes        # Full with auto-confirm dd
-sudo ./scripts/build-release --skip-build --skip-test --yes  # Just distribute
-```
-
-**Options:**
-- `--skip-build` - Skip ISO build, use existing
-- `--skip-test` - Skip sanity test
-- `--yes, -y` - Auto-confirm dd to ARCHZFS drive
-
-**Distribution Targets:**
-1. `~/Downloads/isos/` (always)
-2. `truenas.local:/mnt/vault/isos/` (via cjennings@, checks reachable)
-3. ARCHZFS labeled drive (detected via `blkid -L ARCHZFS`, writes via dd)
-4. Ventoy drive (detected by label "Ventoy" or ventoy/ directory)
-
-**Key Fixes:**
-- Uses `SUDO_USER` to get real user's home (not /root)
-- SSH/SCP runs as real user to use their SSH keys
-- Uses `cjennings@truenas.local` (not root)
-- No removable check for ARCHZFS (Framework expansion cards show as internal)
-- Graceful handling of failures (warns and continues)
-
-### 5. Added eBPF Tracing Tools
-- Added to ISO: `bpftrace`, `bcc-tools`, `perf`, `w3m`
-- Updated RESCUE-GUIDE.txt with sections 9 (System Tracing) and 10 (Terminal Web Browsing)
-
-## Technical Notes
-
-### os-prober Warning
-```
-Warning: os-prober will not be executed to detect other bootable partitions.
-```
-- Disabled by default since GRUB 2.06 for security
-- Not needed for single-OS ZFS systems
-- To enable: Add `GRUB_DISABLE_OS_PROBER=false` to `/etc/default/grub`
-
-### Genesis Snapshot Best Practice
-Scripts must be part of genesis snapshot to survive rollback:
-1. `install-archzfs` installs zfssnapshot, zfsrollback, fzf
-2. These exist before genesis snapshot is taken
-3. Future rollbacks preserve the tools
-
-### Framework Laptop Note
-Expansion card drives show as internal (RM=0) but are hot-swappable.
-Don't check for removable flag when detecting ARCHZFS drives.
-
-### Ratio Machine
-- Host: ratio (192.168.86.48)
-- Login: root / cmjdase1n
-- Scripts deployed: zfssnapshot, zfsrollback, grub-zfs-snap, fzf
-
-### Cogito Machine (Build Host)
-- Framework Desktop ML with AMD Ryzen AI MAX+ 395
-- Specs in `assets/cogito-hardware-specs.txt`
-
-## Files Modified/Created This Session
-
-**New Files:**
-- `scripts/sanity-test.sh` - Automated ISO testing
-- `scripts/build-release` - Build and distribution workflow
-- `custom/zfssnapshot` - ZFS snapshot creation
-- `custom/zfsrollback` - Interactive ZFS rollback
-- `assets/cogito-hardware-specs.txt` - Build machine specs
-- `/home/cjennings/code/archsetup/inbox/remove-zfs-scripts.md` - Task for archsetup
-
-**Modified Files:**
-- `custom/grub-zfs-snap` - Fixed syntax error
-- `custom/install-archzfs` - Added fzf to pacstrap
-- `custom/RESCUE-GUIDE.txt` - Added tracing/browser sections
-- `build.sh` - Added bpftrace, bcc-tools, perf, w3m, zfs script copies
-- `TODO.org` - Updated tasks
-
-## Commits This Session
-```
-d0e76f0 Add --yes flag for fully automated distribution
-2c261bc Update build-release for TrueNAS and Framework drives
-c68e550 Fix build-release for running with sudo
-d3eaaff Add automated sanity test for ISO verification
-5eba633 Fix zfsrollback to process children before parents
-4e7e3fe Fix grub-zfs-snap command substitution syntax error
-ee668df Increase fzf height in zfsrollback to 70%
-7c0d655 Add fzf to target system packages
-156dde5 Add zfssnapshot and zfsrollback scripts to ISO
-e924c53 Add TODO for zfsrollback and zfssnapshot scripts
-d2c2cca Add eBPF tracing tools and w3m terminal browser
-66c92a2 Add session context for 2026-01-19
-c719d45 Add build-release script for ISO build and distribution
-```
-
-## Final Distribution (This Session)
-```
-ISO: archzfs-vmlinuz-6.12.66-lts-2026-01-19-x86_64.iso (5.2GB)
-
-Distributed to:
-  ✓ /home/cjennings/Downloads/isos/
-  ✓ truenas.local:/mnt/vault/isos/
-  ✓ /dev/sda (ARCHZFS boot drive)
-  ✓ /dev/sdb1 (Ventoy)
-```
-
-## Pending/Future Work
-- User should run archsetup on ratio after genesis rollback
-- archsetup inbox task: remove duplicate zfssnapshot/zfsrollback scripts
-
-## Session 2026-01-19 (continued)
-
-### Added --full-test to build-release
-
-Created comprehensive installation test framework:
-
-**New File: `scripts/full-test.sh`**
-- Automated installation testing for all disk configurations
-- Tests: single-disk, mirror (2 disks), raidz1 (3 disks)
-- Each test: boots ISO, runs unattended install, reboots, verifies ZFS health
-- Options: `--quick` (single-disk only), `--verbose`
-- Runs sanity-test.sh first, then install tests
-
-**Modified: `scripts/build-release`**
-- Added `--full-test` option
-- When specified, runs full-test.sh instead of sanity-test.sh
-- Usage: `sudo ./scripts/build-release --full-test`
-
-**Usage:**
-```bash
-sudo ./scripts/build-release              # Sanity test only (fast)
-sudo ./scripts/build-release --full-test  # All install tests (~30-45 min)
-sudo ./scripts/build-release --skip-test  # No testing
-```