Prove retained connectors close on shutdown

DOCS-TODO.md

@@ -1,6 +1,11 @@
-# DOCS-TODO — `/doc` documentation overhaul
+# Completed `/doc` documentation overhaul (historical plan)
 
-Briefing for the doc-system overhaul. Read this fully before touching anything.
+This June 2026 plan is complete and is retained only as implementation history.
+It is not the current task queue and its one-off execution rules do not govern
+new UCE work. Current documentation has 269 rendered pages and is covered by
+the sharded doc gate in `scripts/run_cli_tests.sh`.
+
+The original briefing follows.
 The approved design and the two locked decisions are: **(1) examples are LIVE and
 SELF-VERIFYING** — real UCE code executed at render time, showing source + actual
 captured output, gated by the test suite; **(2) FULL SWEEP** of all 257 pages.
@@ -163,7 +168,11 @@ and the suite stays green.
   ```
   Expect the current 91 to grow by the new doc gate(s), 0 failed.
 
-## Hard rules (non-negotiable)
+## Historical execution rules (no longer active)
+
+These rules applied only while the overhaul was being carried out in June 2026.
+They are preserved to explain that work and must not override current repository
+or operator instructions.
 
 - **NEVER `git commit`/push/tag.** Not pi, not its subagents, not anyone. Leave a clean
   working tree and report.

docs/doc-overhaul.md

@@ -14,9 +14,9 @@ Implement the DOCS-TODO.md overhaul for the UCE `/doc` system on the sshfs sourc
 
 ## Current State
 
-- Status: verifying; Phase 1 + gate complete, StringList conversion complete, Phase 2 example/filler sweep complete.
-- Last updated: 2026-06-16
-- Source of truth: `/root/mount_ssh/uce-dev-root-htdocs-uce`
+- Status: complete; retained as the implementation record for the June 2026 overhaul.
+- Last updated: 2026-07-20
+- Source of truth: `/root/mount_ssh/uce-upstream`
 - Runtime/live target: `root@10.4.2.110:/Code/uce.openfu.com/uce`
 
 ## Goal Tree
@@ -38,10 +38,10 @@ Legend: `[ ]` not started, `[~]` in progress, `[x]` done, `[!]` blocked, `[-]` s
   - Done when: CLI runner checks every doc page and examples.
   - Verify: full host gate passes.
 
-## Execution Queue
+## Completed Execution Queue
 
-1. G2 area batching/delegation now that the mechanism is proven.
-2. Keep the host suite green after each area batch.
+1. Phase 2 area batching and delegation completed.
+2. The host suite and sharded 269-page documentation gate remain the ongoing regression boundary.
 
 ## Decisions
 
@@ -55,6 +55,7 @@ Legend: `[ ]` not started, `[~]` in progress, `[x]` done, `[!]` blocked, `[-]` s
 - 2026-06-16: Converted retiring `list_unique/list_sort/list_some/list_every/list_find` free functions to `StringList` methods, updated callers and method docs; full host gate passed: `Summary: 353 passed, 0 failed, 0 skipped`.
 - 2026-06-16: Added live examples across types, string, regex, time, markup, noise, uri, and session area pages; full host gate passed: `Summary: 353 passed, 0 failed, 0 skipped`.
 - 2026-06-16: Added `:example` blocks to all remaining doc pages, removed full PHP/JS Related Concepts filler, removed duplicate content code fences except resource-bound pages; full host gate passed: `Summary: 353 passed, 0 failed, 0 skipped`.
+- 2026-07-20: Marked the finished plan historical so it no longer presents completed work or one-off execution rules as current instructions.
 
 ## Change Log
 

scripts/test_mysql_persistent_pool_idle.sh

@@ -119,4 +119,25 @@ while (( SECONDS < deadline )); do
 done
 [[ "$connections" == "0" ]] || { echo "final pooled fixture connection remained after idle eviction" >&2; exit 1; }
 
-echo "Persistent MySQL idle eviction preserved hot reuse and retired the expired connection"
+retained=$(request /database.uce)
+IFS='|' read -r retained_pid retained_id retained_source <<<"$retained"
+[[ "$retained_pid" == "$first_pid" && "$retained_source" == "new" ]]
+connections=$(mariadb --batch --skip-column-names -e "SELECT COUNT(*) FROM information_schema.PROCESSLIST WHERE USER='$test_user'")
+[[ "$connections" == "1" ]] || { echo "shutdown fixture connection was not retained in the worker pool" >&2; exit 1; }
+
+journal_cursor=$(journalctl -u mariadb.service -n 0 --show-cursor --no-pager | sed -n 's/^-- cursor: //p')
+[[ -n "$journal_cursor" ]] || { echo "could not capture MariaDB journal cursor" >&2; exit 1; }
+kill -TERM "$server_pid"
+deadline=$((SECONDS + 10))
+while kill -0 "$server_pid" 2>/dev/null && (( SECONDS < deadline )); do sleep 0.05; done
+[[ ! -e "/proc/$server_pid" ]] || { echo "private UCE server did not stop cleanly" >&2; exit 1; }
+wait "$server_pid" 2>/dev/null || true
+server_pid=""
+sleep 1
+shutdown_log=$(journalctl -u mariadb.service --after-cursor "$journal_cursor" --no-pager)
+if grep -F "$test_user" <<<"$shutdown_log" | grep -Fq "Aborted connection"; then
+	echo "clean UCE shutdown aborted a retained MySQL connection" >&2
+	exit 1
+fi
+
+echo "Persistent MySQL idle eviction preserved hot reuse, retired expired connections, and closed a retained connection on clean shutdown"