The field was a fixed square, leaving wide monitors with dead side
margins. Field width now follows the window aspect (capped at 2.2:1,
quantized to avoid rebuilds on minor resizes); routes, obstacles and
transit spawns stretch with it, and the grid keeps 100 m cells.
Mobile obstacles used to bounce until they wedged into far corners, and
a single perimeter route let the mesh stretch into segments that stopped
exchanging data. Even drones now fly the perimeter while odd drones fly
an X through the center, keeping bridge links alive, and transit objects
enter at one edge, cross the area, and respawn at a fresh edge.
Gitea Actions: compile check, virtual-drone smoke flight validated with
DuckDB, read-only SQL gate tests, Trivy vuln and misconfig scans. Pushes
to main cut a semantic version from the conventional-commit type and
publish a release with a fleet release manifest and source bundle.
Single-page view over the Parquet lake: live partition tree with
rolled-up sizes and a SQL console gated by the same read-only rules
as the peer query channel. Ships in the monitoring profile.
Bench and flight share one query channel, so debugging exercises the
production path daily. Grafana/Prometheus/exporter host ports become
env-overridable for shared hosts.
Record the full reasoning path (GraphQL service, Arrow Flight, raw SSH,
forced-command synthesis) and specify read-only enforcement as five
fail-safe layers: key-per-operation, SELECT-only statement gate,
read-only OS user, engine hardening, resource caps. Promote 'SQL is
the contract' to a top-level design principle.
Monitoring compose profile: dependency-free Prometheus exporter that
scans the Parquet output with DuckDB (rows, detections, pose frames,
battery, RSSI, link distance, bytes on disk), Prometheus scrape config
and a provisioned Grafana dashboard. Demonstrates the observability
doctrine: fleet statistics derived from the data platform itself.
Replace object-store replication with rsync over persistent multiplexed
SSH (ed25519, pinned known_hosts, forced commands as the only remote
API); demote GraphQL to the ground integration standard. Add DuckDB
spatial extension for separation audits, perimeter predicates and
trajectory analysis in the local planar frame.
Top-down SVG view: patrol flight with separation and obstacle avoidance,
mesh links appearing within radio range, pose-broadcast flashes, bulk
sync transfers with live rate and cumulative up/down counters, channel
hopping and battery per drone. Pure client-side simulation (Vite/React/TS).
One process per drone: seeded patrol kinematics, sensor streams at
realistic rates, detection events, hot current/ blocks sealed into
Hive-partitioned Parquet, and the compact UDP state broadcast with
peer RSSI derivation. Scales via docker compose --scale.
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