docs: engineering-operations playbook and project-wide status accuracy pass

- docs/eng-ops.md gains Part II, live physical-backend engineering
  operations: hard rules, the full module-parameter matrix, the routine
  supervised cycle and clean-release checklist, the debugfs inventory,
  how to read gsp-phys-state, a debugging scenario catalogue
  (CTXNOTVALID/promote wedge, fail-safe WPR2, unload hangs, guest wedges,
  MMU/PTE and PBDMA faults, relay symptoms), a hazard register (crash
  causes and debugging side effects), the physical-backend OODA loop, and
  the work-context map with porting flows
- architecture, implementation, operations, orientation, getting-started,
  portability, ecosystem and reference docs corrected to the current
  state: CUDA driver-API smoke green, CE-class work forwarding and
  engine-authored releases plus fault relay in place (default off), GR
  execution blocked on engine-context validity, the promote wedge and
  designed locked fail-safe, and P5 wave-2 subsumed
- internal-reference cleanup in tracked docs (no analysis-source or
  local-archive references); historical architecture document bannered
- README reading list and STATE-CURRENT frontier refreshed; new pages
  (runbook, green-eye user guide, porting sequence, porting/packaging
  notes) linked from the tree

Link check: scripts/check-docs-links.py passes (56 files, no broken links).

1 files changed, 9 insertions, 3 deletions

diff --git a/docs/07-developers/onboarding-and-standards.md b/docs/07-developers/onboarding-and-standards.md
index e62ec28..78100c4 100644
--- a/docs/07-developers/onboarding-and-standards.md
+++ b/docs/07-developers/onboarding-and-standards.md
@@ -62,8 +62,8 @@ open-iov/
 ├── scripts/              build/load/test automation, VM harness
 ├── config/               hardware/version profiles (the portability surface)
 ├── firmware/             versioned firmware images + decompilation artifacts
-├── (private)             reverse-engineering study notes live untracked;
-│                         see the maintainers' study index
+├── (private)             reverse-engineering study notes live untracked,
+│                         outside the published tree
 ├── docs/                 THIS documentation tree (start at docs/README.md)
 └── wiki/                 long-form firmware/protocol deep dives
 ```
@@ -156,7 +156,7 @@ The following rules each come from a real bug and are enforced in review:
 | `tools/cuda-ab/` | host-vs-guest CUDA A/B harness (one deterministic workload, diffed results) |
 | `tools/rmq/` | host RM-API oracle for ground-truth GPU/RM data |
 | `tools/firmware_analyzer.py` + Ghidra scripts | firmware analysis pipeline |
-| module debug parameters | guest-memory scanning/poking, VRAM inspection |
+| module debug parameters | guest-memory scanning/poking, VRAM inspection; physical-backend parameters and debugfs state/control files (see [`../eng-ops.md`](../eng-ops.md) Part II) |
 | QEMU gdbstub workflow | guest virtual-memory inspection/writing |
 | `debug/risc-v-gsp-rm-vm/` (green-eye) | **# TOOL IN DEVELOPMENT - NOT READY YET!** — RISC-V GSP/uproc VM runtime inspection, session recording and `gsp-rm-vfio` accuracy measurement (see [`../05-operations/03-risc-v-gsp-rm-vm.md`](../05-operations/03-risc-v-gsp-rm-vm.md)) |
 | `wiki/` documents | protocol and firmware deep dives |
@@ -193,6 +193,12 @@ make clean
 * Protocol changes: diff the RPC inventory before/after; attach both.
 * Memory-model changes: re-run the VA↔PA discovery tooling and a guest CUDA
   start-up; attach the trace.
+* Live physical-backend cycles are **supervised only**: one cycle at a time,
+  never unattended, with the module sha256 recorded before and after and the
+  clean-release checklist walked every time. Do not retry after a
+  mutating-RPC failure or a wedge. A requested reboot needs a written reason
+  and a post-reboot plan before approval is asked (project hard rule). See
+  [`../eng-ops.md`](../eng-ops.md) Part II.
 * Never land a change that makes a rung regress, even "temporarily".
 
 ## 8. Security hygiene for contributors