Fix Docker Swarm discovery network name mismatch

- Changed NetworkName from 'chorus_default' to 'chorus_net'
- This matches the actual network 'CHORUS_chorus_net' (service prefix added automatically)
- Fixes discovered_count:0 issue - now successfully discovering all 25 agents
- Updated IMPLEMENTATION-SUMMARY with deployment status

Result: All 25 CHORUS agents now discovered successfully via Docker Swarm API

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

config/whoosh-autoscale-policy.yml

@@ -0,0 +1,29 @@
+cluster: prod
+service: chorus
+wave:
+  max_per_wave: 8
+  min_per_wave: 3
+  period_sec: 25
+  placement:
+    max_replicas_per_node: 1
+gates:
+  kaching:
+    p95_latency_ms: 250
+    max_error_rate: 0.01
+  backbeat:
+    max_stream_lag: 200
+  bootstrap:
+    min_healthy_peers: 3
+  join:
+    min_success_rate: 0.80
+backoff:
+  initial_ms: 15000
+  factor: 2.0
+  jitter: 0.2
+  max_ms: 120000
+quarantine:
+  enable: true
+  exit_on: "kaching_ok && bootstrap_ok"
+canary:
+  fraction: 0.1
+  promote_after_sec: 120