Initial sync: memory, agents, commands, and gitignore

Syncs project memory, custom agents, and commands across machines.
Excludes secrets (settings.json), session state, and runtime files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

projects/-Users-csader-platerunner/memory/MEMORY.md

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+- [PlateRunner deployment](reference_deployment.md) — Deploy via SSH to prox2docker, git pull, docker compose rebuild on VM 103

projects/-Users-csader-platerunner/memory/reference_deployment.md

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+---
+name: PlateRunner deployment
+description: PlateRunner deploy process — SSH to prox2docker, git pull, docker compose rebuild on VM 103
+type: reference
+---
+
+PlateRunner is running on the homelab at platerunner.chrissader.com.
+
+**Host:** VM 103 (192.168.86.122) on Proxmox2
+**SSH alias:** `prox2docker` (csader@192.168.86.122)
+**Stack path:** `/opt/docker/stacks/platerunner`
+**Container:** `platerunner-platecycler-1` on port 3001 → 3000
+
+**Deploy process:**
+```bash
+ssh prox2docker "cd /opt/docker/stacks/platerunner && git pull && docker compose up -d --build"
+```
+
+**Note:** git push from this machine may hang on credential prompt — user may need to push manually.