---
gsd_state_version: 1.0
milestone: v1.0
milestone_name: milestone
status: executing
last_updated: "2026-03-19T23:15:54.366Z"
progress:
  total_phases: 10
  completed_phases: 7
  total_plans: 10
  completed_plans: 10
---

# Project State: REST→WS Junction Fix + Full-Symbol Streaming

**Initialized:** 2026-03-19
**Status:** Executing Phase 08

---

## Current Phase

**Phase 4 — Parallel fill_from_rest (Complete — 1/1 plans done)**

| Requirement | Description                                                            | Status   |
| ----------- | ---------------------------------------------------------------------- | -------- |
| PARA-01     | fill_from_rest processes all 18 symbols concurrently (Semaphore-bound) | Complete |
| PARA-02     | Total fill time <90s with 4 concurrent workers                         | Complete |
| PARA-04     | WS channel capacity increased from 1,000 to 50,000                     | Complete |

---

## Phase Summary

| Phase | Name                        | Status                | Requirements             |
| ----- | --------------------------- | --------------------- | ------------------------ |
| 1     | Junction Fix                | Complete              | JUNC-01..04              |
| 2     | Junction Telemetry + Audit  | Complete (2026-03-19) | TELE-01..05, AUDT-01..05 |
| 3     | Rate Limiter Ceiling        | Complete (2026-03-19) | PARA-03                  |
| 4     | Parallel fill_from_rest     | Complete (2026-03-19) | PARA-01, 02, 04          |
| 5     | Combined WS Spike Test      | Not Started           | COMB-01                  |
| 6     | Combined WS Implementation  | Complete (2026-03-19) | COMB-02..04, 06          |
| 7     | Overlapping Reconnection    | Complete (2026-03-19) | COMB-05                  |
| 8     | Integration Testing         | Not Started           | (validation)             |
| 9     | Build + Deploy Prep         | Not Started           | DEPL-01..05              |
| 10    | Clean-Slate Deploy + Verify | Not Started           | VERF-01..05              |

---

## Blockers

None.

## Decisions Made

| Decision                                             | Rationale                                                                         | Date       |
| ---------------------------------------------------- | --------------------------------------------------------------------------------- | ---------- |
| Junction fill between last_days init and main loop   | Only valid position: process_trade_through_processors requires last_days          | 2026-03-19 |
| Re-seed gap detector unconditionally after junction  | Ensures Puck starts clean in main loop even when no gap existed                   | 2026-03-19 |
| Synchronous #[test] for junction unit tests          | No async I/O needed; processor + gap detector are sync                            | 2026-03-19 |
| Drain WS channel into Vec to measure buffer depth    | tokio mpsc has no .len(); drain via try_recv is the only option                   | 2026-03-19 |
| Replay buffered WS trades after junction fill        | Prevents trade loss when WS trades arrive during junction fill latency            | 2026-03-19 |
| OPENDEVIATIONBAR_MAX_PENDING_BARS=100000 for Phase 4 | 10K overflows on full-day restart; Python cannot drain during sync fill_from_rest | 2026-03-19 |

- [Phase 06]: BinanceAggTrade made pub(crate) for combined_ws cross-module access — Minimal visibility — only needed within the crate, not externally
- [Phase 06]: Per-symbol WS fallback removed entirely — enforces start_ws() call sequence, prevents silent regression to N individual connections

## Key Metrics

| Metric                     | Baseline | Current | Target |
| -------------------------- | -------- | ------- | ------ |
| Symbols streamed           | 2/18     | 2/18    | 18/18  |
| fill_from_rest duration    | ~5 min   | ~5 min  | <90s   |
| Intra-day Stathera gaps    | >0       | >0      | 0      |
| Stathera overlaps          | >0       | >0      | 0      |
| Rate limiter peak (normal) | Unknown  | Unknown | <5000  |

---

_Last updated: 2026-03-19 — Phase 07 complete (1/1 plans): Proactive overlapping reconnection at 23h in run_with_reconnect(). Spawns new connection, waits for first-trade signal via oneshot, cancels old. 2 new tests passing._
