feat(swarm): selectable flight + self-learning patterns, wired into training + viz
Adds multiple flight/coverage-optimization strategies and self-learning
strategies, selectable from the trainer, and fixes drone clustering — the
demo sweep now covers 36% of the area (was ~0.9%) with 4 disjoint strips.
## Flight patterns (planning/patterns.rs) — `FlightPattern`
- PartitionedLawnmower (new default): area split into per-drone strips → no
overlap, coverage scales ~linearly with swarm size (clustering fix)
- Boustrophedon (baseline), Spiral, Pheromone (stigmergic), PotentialField,
LevyFlight. from_str/name/all + next_target(&PatternContext).
## Self-learning patterns (marl/learning.rs) — `LearningPattern`
- Mappo (CTDE centralized critic), Ippo (independent, jamming-robust),
MappoCuriosity (count-based intrinsic novelty), MetaRl (MAML fast-adapt).
- CuriosityModule (visit_bonus = beta/sqrt(count), novelty decays on revisit),
MetaAdapter (base + fast-weights, reset_fast/consolidate), shaped_reward().
## Trainer wiring (bin/train_marl.rs)
- --flight-pattern {boustrophedon|partitioned|spiral|pheromone|potential|levy}
- --learn-pattern {mappo|ippo|curiosity|meta}
- Rollout now moves each drone per the selected FlightPattern (PatternContext
with visited trail + live peers), curiosity-shapes the reward, and logs
CTDE vs independent. Telemetry meta profile carries the pattern labels so the
viewer header shows `flight=… · learn=…`.
## Verification
- Browser pass (viz at localhost:8777): partitioned run renders 4 distinct
serpentine coverage bands, header shows the patterns, final coverage 36.3%,
scrubber/speed/playback work, ZERO console errors. Screenshot confirmed.
- Regenerated viz/sample_telemetry.jsonl: 1 meta / 120 step / 30 episode,
coverage 0.9% → 36.3%.
## Tests
- --no-default-features: 103/103 (was 91; +6 patterns +6 learning)
- --features train: 108/108
Co-Authored-By: claude-flow <ruv@ruv.net>
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