feat(500): reply shapes are delivered - the core every turn through the ledger, each slice at its moment, reply mounts before the reply (#5495)

- Every turn (/api/plugin/retrieve, UserPromptSubmit): the core reply shape
  leads the payload - in full the first time, as its one-line reminder
  after that - followed by whatever is mounted on reply.report, under the
  shared rule ledger. Fresh keys come back as shape_keys.
- The ledger is <sid>.shapes.ids in scribe-priorart (scribe_shapes_file /
  _seen / _append), so the compaction sweep that clears every .ids ledger
  is what brings the full core back after one.
- At a moment (/api/plugin/moment): the slice for that reply - completion
  on work.finish, asks on reply.ask, plan on work.plan - ahead of the
  mounted rules. reachable_tools now lists tools reaching a shaped moment
  even on an install with nothing mounted.
- Scribe's own tools (attach_moment_rules): reply_shape in the response,
  in full, since that door has no ledger. enter_project carries the core
  for clients with no prompt hook.
- Telemetry: one AppLog row per delivery (plugin / reply_shape), each
  shape with full or pointer and the door (turn, hook, mcp).

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

plugin/hooks/scribe_autoinject.sh

@@ -110,6 +110,7 @@ rule_state_dir="${TMPDIR:-/tmp}/scribe-priorart"
 mkdir -p "$rule_state_dir" 2>/dev/null || true
 idfile=""
 rulefile=""
+shapefile=""
 exclude_q=""
 if [ -n "$session_id" ]; then
   # session_id is an opaque token from Claude Code; keep only filename-safe chars.
@@ -127,6 +128,11 @@ if [ -n "$session_id" ]; then
   [ -n "$rule_seen" ] && exclude_q="${exclude_q}&exclude_rule_ids=${rule_seen}"
   # What the session actually OPENED, as against what it was shown (#4100).
   exclude_q="${exclude_q}$(scribe_held_query "$rule_state_dir/${safe_sid}.opened.ids")"
+  # Which reply shapes it already holds in full (milestone 500): the core is
+  # sent whole once, and as its one-line reminder on every later turn.
+  shapefile=$(scribe_shapes_file "$safe_sid")
+  shapes_seen=$(scribe_shapes_seen "$shapefile")
+  [ -n "$shapes_seen" ] && exclude_q="${exclude_q}&shapes_seen=${shapes_seen}"
 fi
 
 body=$(curl -fsS --max-time 5 \
@@ -150,6 +156,9 @@ if [ -n "$rulefile" ]; then
   scribe_json_list "$body_flat" '.rule_ids' \
     | scribe_rules_append "$rulefile"
 fi
+if [ -n "$shapefile" ]; then
+  scribe_json_list "$body_flat" '.shape_keys' | scribe_shapes_append "$shapefile"
+fi
 
 scribe_json_out UserPromptSubmit "$context"
 exit 0