---
gsd_state_version: 1.0
milestone: v8.0
milestone_name: Aion-Native Pipeline -- Zero-Gap Restarts
status: planning
stopped_at: Completed 33-01-PLAN.md
last_updated: "2026-03-28T08:49:35.813Z"
last_activity: 2026-03-28 -- Roadmap created for v8.0 (5 phases, 13 requirements)
progress:
  total_phases: 7
  completed_phases: 4
  total_plans: 7
  completed_plans: 6
  percent: 0
---

# Project State

## Project Reference

See: .planning/PROJECT.md (updated 2026-03-28)

**Core value:** Zero-gap, zero-overlap bars across every restart -- Aion-native, Parquet-first, exchange-gap-aware.
**Current focus:** Phase 29 -- DELETE Strategy + Exchange Gap Floor

## Current Position

Phase: 29 of 33 (DELETE Strategy + Exchange Gap Floor)
Plan: 0 of ? in current phase
Status: Ready to plan
Last activity: 2026-03-28 -- Roadmap created for v8.0 (5 phases, 13 requirements)

Progress: [░░░░░░░░░░] 0%

## Performance Metrics

**Velocity:**

- Total plans completed: 0
- Average duration: --
- Total execution time: 0 hours

## Accumulated Context

### Decisions

- v7.3: Exchange gap classification shipped -- gaps now typed as pipeline vs exchange
- v8.0: DELETE spike (RESUME-04) comes first because it informs all other resume work
- v8.0: Backlog 999.2 (Aion-first defaults) promoted to Phase 31
- [Phase 29]: Extracted _aion_delete_after_resume() to delete_strategy.py with batch pre-check query per symbol
- [Phase 29]: Exchange gap floor: clamp resume TID above permanent exchange gaps using kintsugi_log query, non-fatal on failure
- [Phase 30]: Conservative seed TID: min(last_completed_bar_tid) across thresholds for Parquet pre-fill
- [Phase 30]: Used Protocol type (_HasMetrics) for engine parameter typing instead of Any
- [Phase 32]: 24 workers for bigblack bulk repair (ClickHouse bottleneck at higher values)
- [Phase 33]: Kept day-mode code behind guards for forex re-enablement; removed only unused params

### Pending Todos

None yet.

### Blockers/Concerns

- DELETE phase takes ~6 min for 42 partitions -- Phase 29 spike must find a strategy under 60s
- 98K historical day-boundary gaps healing at ~45/pass -- Phase 32 bulk reprocess needed
- Parquet tick cache available but not yet used by sidecar gap fill

## Session Continuity

Last session: 2026-03-28T08:49:35.811Z
Stopped at: Completed 33-01-PLAN.md
Resume file: None
