fix: revert TUNNEL_LOCAL_SSH_PORT to 2223, fix registry, add incident docs

- wizard.sh + connect.conf: TUNNEL_LOCAL_SSH_PORT back to 2223 (Synology SSH port)
- port-registry: renamed x6340 → x4662 (matches QuickConnect ID)
- port-registry: added MR2200ac mesh satellite note for x4662
- deployment checklist: added kit-connect section, post-deployment rules,
  incident log, and complete fleet port registry table
- memory: added fleet-router-inventory.md with full fleet state
- hub README: updated with current status and locations

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/bats/composite.bats

@@ -0,0 +1,23 @@
+setup() { load '../../package/kit-busrouter/files/usr/lib/busrouter/lib-score.sh'; }
+
+@test "composite weights sum to a 0-100 score" {
+  # latency35 dl25 up10 jit10 loss10 sig10 ; all metrics perfect -> 100
+  run score_composite 5 25 12.5 1 0 -65
+  [ "$output" -eq 100 ]
+}
+@test "composite all-worst -> 0" {
+  run score_composite 200 0.5 0.5 50 40 -95
+  [ "$output" -eq 0 ]
+}
+@test "rolling average of 3 samples" {
+  run rolling_avg 90 60 30      # -> 60
+  [ "$output" -eq 60 ]
+}
+@test "rolling average rounds half-up" {
+  run rolling_avg 100 100 99    # 299/3 = 99.67 -> 100
+  [ "$output" -eq 100 ]
+}
+@test "signal weight redistributes when no modem (signal='')" {
+  run score_composite 5 25 12.5 1 0 ""   # still 100, sig weight moved to latency/throughput
+  [ "$output" -eq 100 ]
+}