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Backend evolution: Phases 1-10 specialists + agentic FSM + Mellea + LiteLLM router
Telescoped from ~50 spine commits across May 1-4 into one coherent
backend snapshot — what was built between v0.1's 9-specialist
sequential pass and the post-overhaul demo state.
Major additions:
- Planner-routed FSM with 5 intents (live_now, single_address,
neighborhood, development_check, compare). Granite 4.1:3b picks
the intent + targets; Granite 4.1:8b reconciles.
- Mellea-validated reconciliation (rejection sampling with 4
grounding checks: numerics_grounded, no_placeholder_tokens,
citations_dense sentence-scoped, citations_resolve).
- LiteLLM Router for backend abstraction — Ollama default, vLLM
on AMD MI300X via env vars, automatic fallback.
- Phase 1: Prithvi-EO live water segmentation (lazy import).
- Phase 2: GLiNER structured extraction.
- Phase 3: Granite Embedding Reranker R2.
- Phase 4: TerraMind synthetic SAR (parked, lazy import).
- Phase 5: TerraMind micro-finetune (AMD MI300X experiment).
- Phase 6: Refusal classifier (Guardian,…
