docs(system): analysis reports and EOD workflows

- Created crash analysis for 2026-03-17 OOM event.
- Documented stability test results and memory tuning effects.
- Added PARA-structured workflows for EOD protocol.
- Updated workstation health report for current 16GB swap status.

docs/tech/performance-tuning.md

@@ -7,7 +7,7 @@ tags:
   - optimization
   - kernel-tuning
   - maintenance
-last_updated: '2026-03-09'
+last_updated: '2026-03-17'
 ---
 
 # mw-pfeddersheim-workstation Performance Tuning
@@ -27,6 +27,11 @@ This document tracks optimization decisions, system tuning parameters, and clean
 - **vm.swappiness**: Set to `10` to prefer RAM over swap on the 64GB machine.
 - **fs.inotify.max_user_watches**: Increase to `524288` for IDEs and build tools.
 - **vm.vfs_cache_pressure**: Set to `50` to improve filesystem cache retention.
+- **systemd-oomd**: Enabled to prevent system-wide hangs during severe memory pressure (User-space OOM killer).
+- **zswap**: Enabled via GRUB to provide compressed swap cache, improving performance when swapping is necessary.
+
+### 2. Docker Resource Management
+- **Memory Limits**: Implemented `mem_limit` on critical containers (Firebird: 4G, Mailpit: 512M) to prevent runaway processes from consuming entire system memory.
 
 ### 2. Storage & Filesystem Cleanup
 - **Docker**: Automated pruning of unused images and volumes via `scripts/maintenance.sh`.
@@ -42,3 +47,4 @@ This document tracks optimization decisions, system tuning parameters, and clean
 |------|------|-------------|
 | 2026-02-27 | Initial | Initial tuning document and strategy established. |
 | 2026-02-27 | Audit | Performed system inspection: Boot time 33.8s, RAM usage 6.5GB/62GB, identified KVM and UVC errors. |
+| 2026-03-17 | Stability | Enabled `systemd-oomd` and `zswap`, added Docker memory limits following system hang analysis. |