{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://kb.local/wire/v1/ingest_progress.schema.json",
  "title": "IngestProgressEvent v1",
  "description": "Streaming progress event emitted by `kebab ingest --json`. One event per line (line-delimited JSON). Discriminated by `kind`. The terminal events are `completed` and `aborted` — every ingest run ends with exactly one of them. The final stdout line of a `--json` ingest is still the existing `ingest_report.v1` for backwards compatibility; progress events stream above it.",
  "type": "object",
  "required": ["schema_version", "kind", "ts"],
  "properties": {
    "schema_version": { "const": "ingest_progress.v1" },
    "kind": {
      "type": "string",
      "enum": [
        "scan_started",
        "scan_completed",
        "asset_started",
        "asset_finished",
        "asset_chunked",
        "expansion_progress",
        "asset_timings",
        "embed_batch_started",
        "embed_batch_finished",
        "pdf_ocr_started",
        "pdf_ocr_finished",
        "completed",
        "aborted"
      ]
    },
    "ts":           { "type": "string", "format": "date-time", "description": "RFC 3339 timestamp at the moment the event was emitted." },
    "root":         { "type": "string", "description": "scan_started: workspace root being walked." },
    "total":        { "type": "integer", "minimum": 0, "description": "scan_completed / asset_started / asset_finished: total assets discovered." },
    "idx":          { "type": "integer", "minimum": 1, "description": "asset_started / asset_finished: 1-based index of the current asset within the scan." },
    "path":         { "type": "string", "description": "asset_started: workspace-relative path of the asset being processed." },
    "media":        { "type": "string", "description": "asset_started: media kind label (e.g. `markdown`, `pdf`, `image`)." },
    "result":       {
      "type": "string",
      "enum": ["new", "updated", "skipped", "error"],
      "description": "asset_finished: per-asset outcome (mirrors `ingest_report.v1.items[].kind`)."
    },
    "chunks":       { "type": "integer", "minimum": 0, "description": "asset_finished / asset_chunked / expansion_progress (v0.24.0): chunk count produced for this asset." },
    "done":         { "type": "integer", "minimum": 0, "description": "expansion_progress (v0.24.0, additive): chunks processed so far in the per-chunk alias-expansion loop (cache hits included). Throttled: emitted at most every 25 chunks or once per second, plus a final frame where done == chunks." },
    "parse_ms":     { "type": "integer", "minimum": 0, "description": "asset_timings (v0.24.0, additive): parse phase wall-clock (ms). Markdown path only." },
    "chunk_ms":     { "type": "integer", "minimum": 0, "description": "asset_timings (v0.24.0, additive): chunk phase wall-clock (ms). Markdown path only." },
    "expansion_ms": { "type": "integer", "minimum": 0, "description": "asset_timings (v0.24.0, additive): alias-expansion phase wall-clock (ms). Markdown path only; 0 when expansion is disabled." },
    "embed_ms":     { "type": "integer", "minimum": 0, "description": "asset_timings (v0.24.0, additive): embed + vector phase wall-clock (ms) — embedding, vector upsert, and stale-vector purge. Markdown path only." },
    "store_ms":     { "type": "integer", "minimum": 0, "description": "asset_timings (v0.24.0, additive): SQLite persist phase wall-clock (ms) — put_asset/document/blocks/chunks only. Markdown path only." },
    "n_chunks":     { "type": "integer", "minimum": 0, "description": "embed_batch_started / embed_batch_finished: chunks in this embedding batch." },
    "ms":           { "type": "integer", "minimum": 0, "description": "embed_batch_finished / pdf_ocr_finished: wall-clock duration (ms). pdf_ocr_finished skip path 의 의미는 mixed (DCTDecode 부재 시 0, engine 실패 시 latency-before-bail)." },
    "chars":        { "type": "integer", "minimum": 0, "description": "pdf_ocr_finished: char count of OCR result. Skip 시 0." },
    "page":         { "type": "integer", "minimum": 1, "description": "pdf_ocr_started / pdf_ocr_finished: 1-based PDF page number under OCR." },
    "ocr_engine":   { "type": "string", "description": "pdf_ocr_finished: engine_name (e.g. 'ollama-vision')." },
    "skipped":      { "type": "boolean", "description": "pdf_ocr_finished: true 일 시 OCR 미수행 (DCTDecode 부재 또는 engine 실패). chars=0 만으로는 skip 과 0-char result 구분 불가." },
    "image_byte_size": { "type": "integer", "minimum": 0, "description": "pdf_ocr_finished (optional, v0.20.x): raster image byte size." },
    "image_width":     { "type": "integer", "minimum": 0, "description": "pdf_ocr_finished (optional, v0.20.x): raster image width px." },
    "image_height":    { "type": "integer", "minimum": 0, "description": "pdf_ocr_finished (optional, v0.20.x): raster image height px." },
    "failure_reason":  { "type": "string", "description": "pdf_ocr_finished (optional, v0.20.x): OCR failure reason. Present iff skipped=true due to engine error. Values: timeout | ocr_error | network_error | other." },
    "counts":       {
      "type": "object",
      "description": "completed / aborted: aggregate counters at the moment the run ended (mirrors fields on `ingest_report.v1`).",
      "properties": {
        "scanned":            { "type": "integer", "minimum": 0 },
        "new":                { "type": "integer", "minimum": 0 },
        "updated":            { "type": "integer", "minimum": 0 },
        "skipped":            { "type": "integer", "minimum": 0 },
        "errors":             { "type": "integer", "minimum": 0 },
        "chunks_indexed":     { "type": "integer", "minimum": 0 },
        "embeddings_indexed": { "type": "integer", "minimum": 0 }
      }
    }
  }
}