# Phase Tracker

## Phase 0: Bootstrap
- [x] 0.1 — Cargo workspace with all crate stubs compiling
- [x] 0.2 — `shared` crate: error types, ObjectRef, DatasetId
- [x] 0.3 — `gateway` with Axum: GET /health → 200
- [x] 0.4 — tracing + tracing-subscriber wired in gateway
- [x] 0.5 — justfile with build, test, run recipes
- [x] 0.6 — docs committed to git

**Gate: PASSED** — All crates compile. Gateway runs. Logs emit. Docs committed.

## Phase 1: Storage + Catalog
- [x] 1.1 — storaged: object_store backend init (LocalFileSystem)
- [x] 1.2 — storaged: Axum endpoints (PUT/GET/DELETE/LIST /objects/{key})
- [x] 1.3 — shared/arrow_helpers.rs: RecordBatch ↔ Parquet + schema fingerprinting
- [x] 1.4 — catalogd/registry.rs: in-memory index + manifest persistence to object storage
- [x] 1.5 — catalogd/schema.rs: schema fingerprinting (merged into shared/arrow_helpers.rs)
- [x] 1.6 — catalogd service: POST/GET /datasets + GET /datasets/by-name/{name}
- [x] 1.7 — gateway routes to storaged + catalogd with shared state

**Gate: PASSED** — PUT object → register dataset → list → get by name. All via gateway HTTP.

## Phase 2: Query Engine
- [x] 2.1 — queryd: SessionContext + object_store config (custom scheme to avoid path doubling)
- [x] 2.2 — queryd: ListingTable from catalog ObjectRefs with schema inference
- [x] 2.3 — queryd service: POST /query/sql → JSON (columns + rows + row_count)
- [x] 2.4 — queryd → catalogd wiring (reads dataset list, registers as tables)
- [x] 2.5 — gateway routes /query with QueryEngine state

**Gate: PASSED** — SELECT *, WHERE/ORDER BY, COUNT/AVG all return correct results via catalog.

## Phase 3: AI Integration
- [x] 3.1 — Python sidecar: FastAPI + Ollama (embed/generate/rerank) — real models, no mocks
- [x] 3.2 — Dockerfile for sidecar
- [x] 3.3 — aibridge/client.rs: reqwest HTTP client with 120s timeout
- [x] 3.4 — aibridge service: Axum proxy endpoints (POST /ai/embed, /ai/generate, /ai/rerank)
- [x] 3.5 — Model config via env vars (EMBED_MODEL, GEN_MODEL, RERANK_MODEL, SIDECAR_URL)

**Gate: PASSED** — Gateway → aibridge → sidecar → Ollama → real 768d embeddings + generation.

## Phase 4: Frontend
- [x] 4.1 — Dioxus scaffold, WASM build (dx build --platform web)
- [x] 4.2 — Dataset browser (sidebar, click to select, refresh)
- [x] 4.3 — Query editor + results table (Ctrl+Enter to run, column types, row count)
- [x] 4.4 — Error display + loading states
- [x] 4.5 — Nginx proxy (lakehouse.devop.live), same-origin API detection

**Gate: PASSED** — Browse datasets and query from browser at lakehouse.devop.live.

## Phase 5: Hardening
- [x] 5.1 — Proto definitions (lakehouse.proto: CatalogService, QueryService, StorageService, AiService)
- [x] 5.2 — Internal gRPC: CatalogService on :3101, proto crate with tonic codegen
- [x] 5.3 — OpenTelemetry tracing: stdout exporter, configurable via lakehouse.toml
- [x] 5.4 — Auth middleware: X-API-Key header check, toggleable via config
- [x] 5.5 — Config-driven startup: lakehouse.toml (gateway, storage, catalog, sidecar, ai, auth, observability)

**Gate: PASSED** — gRPC on :3101, OTel traces, auth ready, system starts from repo + lakehouse.toml.