Mesh node bbox gating, stateful filters, render-pipeline perf, and bug fixes

[d3mocide]

Problem

Three user-reported issues, plus findings from a follow-up performance/bug audit:

1. A pyMC-Repeater's advert table covers every node it has ever heard — the entire Cascade regional mesh — and the meshcore poller re-published all of them every 60s.
2. The render pipeline degraded badly enough with mesh nodes visible that the P25 audio stream couldn't connect.
3. Layer filters (e.g. hiding mesh nodes) didn't survive a PWA close/reopen.

Changes

Mesh node gating (poller)

• _should_publish_node() drops mesh nodes advertising positions outside the configured region bbox(es), like the ADS-B/AIS/Amtrak pollers; applied to all three publish paths (REST advert sync, SSE events, stats neighbors)
• New settings MESH_BBOX_FILTER (default true) and MESH_BBOX_PAD_DEG (default 0.25°); unpositioned nodes always pass

Repeater self-node with GPS (remote monitoring)

• The repeater station publishes itself as a mesh_node entity when its position is known: best-effort GPS extraction from /api/stats, or an explicit ?lat=&lon= pin on the source URL (documented in sources.example.yml). Carries battery/noise-floor status; bypasses the bbox gate since its position is explicit operator config
• Packet-derived links anchor on the repeater's entity id instead of the "local" placeholder; mesh:status carries lat/lon so the frontend anchors legacy "local" links at the actual station before falling back to the region center

Live neighbor list (EntityDetail)

• The Neighbors section overlays the live meshLinks store array (WS-fed) on the one-shot REST fetch — fresh SNR readings appear immediately, and the list survives REST failures (the failure mode from the 2026-05-10 mesh audit)
• Neighbor rows show peer display names, click through to select known peers, and "local" resolves to the repeater's site name

Stateful filters (frontend)

• entityFilter added to the Zustand persist slice, with a deep-merge so filter keys added in future versions default to visible
• A persisted mesh_node=false now also suppresses mesh updates server-side via the WS subscription built on connect

Performance

• Narrowed store subscriptions — all 29 bare useCivicStore() call sites converted to a new useCivicPick(...keys) shallow-equality helper. Previously every WS entity update re-rendered the entire React tree from Dashboard down; this was the main-thread churn behind the P25 symptom.
• Batched WS entity updates — entity_update messages buffer and apply in one store commit per 250ms via a new upsertEntities action (~4 store notifications/sec instead of one per message; PVB interpolates motion between commits)
• Render-loop trims — deck.gl layer-rebuild throttle raised 16ms→33ms (16 was a no-op at 60fps rAF); tooltip GPU picking throttled to 50ms; cold-start REST seed uncapped (backend default limit=200 gave a partial first paint)

Bug fixes

• Mesh links never rendered: packet-derived links store node_a="local", which never exists as an entity, so MeshLinksLayer dropped every feature. Now resolved via the repeater self-node / mesh:status position; the layer also subscribes to mesh nodes only instead of the whole entities map
• Link metrics: link_quality was always written NULL — now computed from SNR on the 0–100 scale the CommsPanel meters expect; the WS mesh_links payload lacked last_seen, so live-pushed links always drew at minimum opacity; SNR color thresholds used RSSI-scale values (−70/−90 dB, everything green) in MeshLinksLayer and EntityDetail — rescaled to LoRa SNR (green ≥ 5 dB, amber ≥ −10 dB) with correct dB units
• Annotation draw preview rendered twice (MapLibre AnnotationOverlay + a passive deck.gl copy in MapOverlay) — deck copy removed
• Tooltip-hide handler never fired — MapLibre's canvas-level event is mouseout, not mouseleave; also now removed on cleanup
• Poller _entity_cache leak — entries now carry a last-seen timestamp and stale ones (>10 min) are swept every 4096 publishes; previously every unique aircraft ever seen stayed in memory for the process lifetime

Dead code removed

• components/layers/MeshLayer.tsx, StreamGaugeLayer.tsx (never imported), ObservationRingLayer.tsx (mounted no-op stub), buildAnnotationDrawPreviewLayers, write-only layersRef, uncalled normalize_mesh_node/_bridge_status

Testing

• poller/: 134 tests pass, including 6 new bbox-gating tests and 16 new self-node/link tests
• npx tsc --noEmit clean; full npm run build (tsc + vite + PWA) succeeds
• py_compile clean on all modified Python files

🤖 Generated with Claude Code

https://claude.ai/code/session_0134TiT5uCSFJYDzMPs87u28