Pre-fix the emissions tooltip only showed the per-hour *rate* — what most
users actually want is the cumulative *amount* burned. This adds running
totals computed by multiplying the model-based rate by the elapsed
observation time since we first saw the airframe.
New module ``flight_observations.py``:
* Tracks first_seen_at + last_seen_at per icao24 hex.
* Re-opens a fresh session when an aircraft is unseen for > 15 min
(treated as a new flight — landed and took off, or transited a dead
zone). Prevents the cumulative counter from resetting mid-flight if
the trail-rendering cache prunes the trail.
* Clamps elapsed time to 24h max so clock skew can't produce comically
large numbers.
* Pruned every 5 min via a new scheduler job (mirrors ais_prune cadence).
flights.py + military.py emission enrichment now also attaches:
* observed_seconds — how long we've been tracking this airframe.
* fuel_gallons_burned — rate * elapsed_h.
* co2_kg_emitted — rate * elapsed_h.
The existing per-hour rate fields stay in the dict for backward compat
and are shown as small secondary context in the tooltip.
Frontend EmissionsEstimateBlock (NewsFeed.tsx) now prominently shows
the cumulative totals with the rate as smaller context underneath plus
"Observed in flight for Xh Ym". When observed_seconds is 0 (first refresh)
it renders "Just observed · totals will appear on next refresh" instead
of a misleading "0 gal".
12 backend tests cover record/accumulate/reset, the 24h clamp, prune,
case-insensitive key normalization, and end-to-end emission integration
in _classify_and_publish.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
BigBodyCobain
03b8053617