swarm: local-swarm integration harness + one-flip primitive seam + telemetry

- primitive_seam.el: SWARM_PRIMITIVE_SEAM selects stub (default, hermetic) vs
  decorated (reshape's dharma-bus primitives). Every seam call is an afferent
  signal; telemetry (seam_mode + afferent tick) rides the vertical result path.
- primitive_binding.el: THE ONE FLIP POINT — bound_think/attend/learn today fall
  back to the stub; when the reshape's decorated primitives land, flip one line
  each and set SWARM_PRIMITIVE_SEAM=decorated. No other change anywhere.
- swarm.el: default blueprint routes think through the seam; the @manager
  aggregates afferent counters from worker results (containment-safe, no shared
  bus register) and journals a swarm.telemetry record; telemetry in the return.
- harness_local_swarm.el: 17/17 GREEN on :8901 with the stub — 8 native-thread
  workers at concurrency 4, reduce+vote convergence, CCR scoping+non-leak, all
  three containment rules (incl. live Rule-2 denial), durable work-tracking,
  afferent telemetry observed. Runs identically under seam=decorated today
  (binding fallback), proving the flip path executes.

Engram writes stay opt-in (durable journal is the substrate); daemon healthy.

lang/swarm/build.sh

@@ -31,6 +31,8 @@ SWARM_MODULES="
   swarm/worktrack.el
   swarm/containment.el
   swarm/primitives.el
+  swarm/primitive_binding.el
+  swarm/primitive_seam.el
   swarm/ccr.el
   swarm/swarm.el
 "