feat: Phase 1 FDA host-operator Role and railiance01 pilot (WP-0009 T02–T07)

Lock DEC-FDA-001 working defaults; add roles/host-operator package with
OS/security and load protocols; scaffold eng-coulomb-railiance01-ho-001
with bound agent, vault, ramp checklists, and Kai quote/ledger.

engagements/pilots/eng-coulomb-railiance01-ho-001/reports/orientation.md

@@ -0,0 +1,33 @@
+# Orientation brief — eng-coulomb-railiance01-ho-001
+
+**Status:** scaffold (RU-03)
+**Date:** 2026-07-16
+
+## Context for host-operator
+
+- First forward-deployed host-operator pilot for coulomb on **railiance01**
+- Prior agency craft: sys-medic + k3s node health protocol
+- Related ops docs live in `railiance-hosts` (inventory, forgejo-on-railiance01, ADR-004 runner)
+- No prior engagement vault session history
+
+## Coach notes
+
+If project memories exist on related repos, run:
+
+```bash
+kaizen-agentic memory brief sys-medic --target <related-repo>
+```
+
+Paste relevant non-secret patterns here. Until then, treat baseline as empty and
+build envelope from first observe session.
+
+## Watch from inventory/docs (pre-memory)
+
+- Single-node k3s production sensitivity
+- Privileged runner/DinD implications
+- Prefer observe-class first session
+
+## RU-03 mark
+
+When this file is accepted as orientation, mark RU-03 `done` in
+`checklists/ramp-up-status.md` (scaffold counts as filed; refresh after first live session if needed).