Fix telemetry visualizer with hierarchical tree layout

Major visualization improvements:
- Replaced force-directed layout with D3 tree layout
- Implemented SVG viewBox coordinate system for infinite canvas
- Fixed zone hierarchy building from events (not pre-computed)
- Fixed parent normalization bug (parent=0 now handled correctly)
- Fixed infinite recursion on ensureZoneNode(0)
- Added virtual root zone to support multiple root zones
- Removed error rings (passthroughs without wiring are acceptable)

Zone rendering:
- Service boxes at zone center
- Transport ports (IN at top, OUT at bottom)
- Passthrough circles with routing wires
- Trunk lines connecting parent-child zones
- Port registry with absolute coordinates

Bug fixes:
- Zone metadata now built from events at startup
- Parent updates when zone created before service_creation event
- Prevented zone from becoming its own parent
- All 8 zones now render correctly in hierarchy

Issues closed: canopy-5bb, canopy-p8k, canopy-7zk
Issues created: canopy-aly (P0), canopy-jm1, canopy-hku, canopy-r7j,
                canopy-uwp, canopy-335, canopy-a1l

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: edwardbr

.beads/config.yaml

@@ -42,7 +42,7 @@
 # This setting persists across clones (unlike database config which is gitignored).
 # Can also use BEADS_SYNC_BRANCH env var for local override.
 # If not set, bd sync will require you to run 'bd config set sync.branch <branch>'.
-# sync-branch: "beads-sync"
+sync-branch: "beads-sync"
 
 # Multi-repo configuration (experimental - bd-307)
 # Allows hydrating from multiple repositories and routing writes to the correct JSONL
@@ -59,4 +59,4 @@
 # - linear.url
 # - linear.api-key
 # - github.org
-# - github.repo
+# - github.repo

.beads/issues.jsonl

@@ -15,4 +15,5 @@ node_modules
 demos/websocket/client/websocket_proto.js
 demos/websocket/server/www/websocket_proto.js
 .cache
-venv
+venv
+rpc_test_diagram

.gitignore

@@ -456,15 +456,23 @@ namespace rpc
             zone zone_id,
             destination_zone parent_zone_id,
             const std::shared_ptr<coro::io_scheduler>& io_scheduler)
-            : service(name, zone_id, io_scheduler)
+            : service(name, zone_id, io_scheduler, child_service_tag{})
             , parent_zone_id_(parent_zone_id)
         {
+#ifdef CANOPY_USE_TELEMETRY
+            if (auto telemetry_service = rpc::get_telemetry_service(); telemetry_service)
+                telemetry_service->on_service_creation(name, zone_id, parent_zone_id);
+#endif
         }
 #else
         explicit child_service(const char* name, zone zone_id, destination_zone parent_zone_id)
-            : service(name, zone_id)
+            : service(name, zone_id, child_service_tag{})
             , parent_zone_id_(parent_zone_id)
         {
+#ifdef CANOPY_USE_TELEMETRY
+            if (auto telemetry_service = rpc::get_telemetry_service(); telemetry_service)
+                telemetry_service->on_service_creation(name, zone_id, parent_zone_id);
+#endif
         }
 #endif