docs(vault): fleet-wide fact re-verification pass (67 pages)

The docs-fact census wave re-read the live hosts and re-keyed every page
it could: runtime/payload identities, ports, sizes, ledger figures, unit
state, and the retirement banners that drifted as the fleet moved. The
wave was interrupted mid-run, so this commit carries only what passed the
integrity gates: every touched page parses (front matter or H1+status
convention intact, balanced fences, no truncated tables, trailing
newline), the docs_completeness and link-integrity seams are green, and
bats is 384/384.

Numbers that this session proved on live hosts are keyed to the measured
value, not the page's earlier claim.

serverAppConfigs-docs/LLM/Llama Cpp Multi-Device Splits.md

@@ -18,6 +18,18 @@ interchangeable:
 | **Layer split** — layers 0..n on dev A, rest on dev B | `-sm layer -ts <a>/<b>` | **yes**, no collectives needed; works cross-vendor (CUDA + Vulkan measured 2026-09-16) |
 | **Per-tensor placement** — attention+KV on A, experts on B | `-ot <regex>=<dev>` | **NO.** `--override-tensor` sets `has_tensor_overrides()`, a REQUIRED term of the scheduler's `pipeline_parallel` flag (only read site: `llama-context.cpp`, in the `pipeline_parallel = …` expression). That flag sets `n_copies = parallel ? MAX : 1` in `ggml_backend_sched_new`; with `n_copies == 1` a pre-allocated weight on a non-primary device has no backend and the graph aborts at `ggml-backend.cpp:941` (`pre-allocated tensor (blk.0.ffn_down_exps.weight) in a buffer (Vulkan1) that cannot run the operation (NONE)` — `(NONE)` is the leaf's own op name). |
 
+Upstream anchors, re-read 2026-10-18 against `master`:
+`src/llama-context.cpp:517-526` computes `pipeline_parallel` with
+`!model.has_tensor_overrides()` as a required term;
+`ggml/src/ggml-backend.cpp:1089` carries the verbatim abort
+`pre-allocated tensor (%s) in a buffer (%s) that cannot run the operation (%s)`
+(the `:941` anchor above is where it sat in the `37b53fd` build this was
+measured on); and `common/arg.cpp` defines `-sm/--split-mode` (2821),
+`-fit/--fit` (2882), `--spec-type` (4295), `--spec-draft-device` (4259),
+`--spec-draft-n-max` (4161), `-fa/--flash-attn` (1758) — every flag in §4 is
+real upstream, not fork-only
+([source](https://raw.githubusercontent.com/ggml-org/llama.cpp/master/common/arg.cpp)).
+
 Failure modes observed (mainline `37b53fd`): per-tensor `-ot exps=Vulkan1`
 with `-dev CUDA0,Vulkan1` → scheduler abort; layer-scoped `-ot` with a
 cross-backend pair → model load fails with only `failed to load model`;
@@ -147,7 +159,8 @@ not prevent a boundary-copy fault.
 ## 6. Drafter KV: sized from the TARGET, bounded by its window policy
 
 `common/speculative.cpp` builds the draft context with
-`cparams.n_ctx = llama_n_ctx(ctx_tgt)` — **no flag caps it.** So:
+`cparams.n_ctx = llama_n_ctx(ctx_tgt)` — `common/speculative.cpp:2663` on
+`master`, re-read 2026-10-18 — **no flag caps it.** So:
 
 ```
 draft KV = ctx_tgt × block_count × 2 (K,V) × kv_heads × key_length × dtype