fix(moments): the tools import the delivery module, and the tool-list cache leaves the swept directory (milestone 458 step 4a, #4922)

Two guards caught 7865313:

- test_mcp_tool_processes reads every coroutine in a tool module's
  namespace as a tool, and a name-imported attach_moment_rules looked
  like one. All seven modules now call moment_delivery.attach_moment_rules,
  and the parity guard accepts the attribute form.
- The session-ledger convention: a file in a swept directory must be a
  .ids ledger. The tool-list cache describes the install, not the
  context, so it moves to its own directory, scribe-moment, where a
  compaction does not sweep it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

plugin/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "scribe",
   "description": "Scribe for Claude Code: connects the scribe MCP server, adds the hooks that deliver live project state and relevant records at the right moment, ships the shared client-neutral Scribe skills (using-scribe, writing-plans, reporting-back, systematic-debugging, verification, brainstorming, reusing-code, shape-accounting), and syncs your saved Scribe Processes as skills (/scribe:sync).",
-  "version": "2026.10.05.1621",
+  "version": "2026.10.05.1624",
   "author": {
     "name": "Bryan Van Deusen"
   },

plugin/hooks/scribe_moment.sh

@@ -60,9 +60,11 @@ safe_sid=$(printf '%s' "$session_id" | tr -c 'A-Za-z0-9._-' '_')
 #
 # Five minutes. A mount or a mapping made in this session reaches the hook
 # within that window; the MCP door delivers Scribe's own moments at once.
-# Not a `.ids` file, so a compaction does not sweep it: it describes the
-# install, not what this context holds.
-tools_file="$state_dir/${safe_sid}.moment.tools"
+# Its own directory, outside SCRIBE_LEDGER_DIRS, so a compaction does not
+# sweep it: it describes the install, not what this context holds.
+cache_dir="${TMPDIR:-/tmp}/scribe-moment"
+mkdir -p "$cache_dir" 2>/dev/null || true
+tools_file="$cache_dir/${safe_sid}.tools"
 now=$(date +%s 2>/dev/null) || now=0
 stamp=""
 [ -f "$tools_file" ] && stamp=$(head -n 1 "$tools_file" 2>/dev/null)