docs(vault): the census was lying; corrected, and the honest result is flat docs

`scripts/port-census.py` built its corpus from the new directory, so each page
under test was held by itself: every era page reported 0 orphan lines. With the
corpus excluding the file under test, each candidate holds 14-63 sole-record
lines, so no era page is padding and none was trashed.

Deletions of restatement only:
- Multi-Node Runtimes.md (-257): restated launch material owned by
  Qwen3.8 PP Deployment.md; index rows and two Related bullets repointed.
- log.md: 66 headings folded into 35 dated entries (one entry per date, newest
  first), titled headings kept as `date — Title` per the spec's wording, and 78
  lines of transient deploy chatter dropped where every fact token in the line
  is held by an owner page (preserved in .AGENTTRASH/20261019-log-transient/).
- Authentic: the 5-page split reverted (-93); the parent carries
  `okf-exempt: length` and the three stub pages stay deleted.

check-okf.py accepts `## YYYY-MM-DD — Title`; port-census.py excludes the file
under test and gained a docstring note about the trap. One-off compaction tool
moved to ~/.AGENTTRASH. Full suite: 451 tests pass, 0 OKF violations,
155 pages, 0 unresolved links.

serverAppConfigs-docs/index.md

@@ -169,7 +169,6 @@ is a locator: one row, one clause, no numbers.
 |---|---|
 | [[Ethernet Bandwidth Math]] | Bytes-per-token math for pipeline versus tensor parallelism, and the link budgets that follow from it. |
 | [[Expected Performance]] | Estimated split-model throughput over ethernet, with the benchmark anchors the estimates rest on. |
-| [[Multi-Node Runtimes]] | How each two-machine runtime is built and launched, what it can combine with, and the mixed-vendor verdicts. |
 | [[Qwen3.8 PP Deployment]] | The real split deployment: which node is head and which is worker, the flags, and the verified gotchas. |
 | [[Sample Script Set]] | An educational two-node RPC split script set, for reading only — never run it or deploy it. |