Method incrementalImport

src/services/import/fetch.ts:214–241

(
    sessionId: string,
    file: File | string,
    onProgress?: (p: ImportProgress) => void
  )

  }

  async incrementalImport(
    sessionId: string,
    file: File | string,
    onProgress?: (p: ImportProgress) => void
  ): Promise<IncrementalImportResult> {
    if (typeof file === 'string') {
      return { success: false, newMessageCount: 0, error: 'File path not supported in Web mode' }
    }

    const form = new FormData()
    form.append('file', file)

    const res = await fetchWithAuth(`${getBaseUrl()}/sessions/${sessionId}/import/incremental`, {
      method: 'POST',
      body: form,
    })

    if (!res.ok) {
      const text = await res.text()
      return { success: false, newMessageCount: 0, error: `HTTP ${res.status}: ${text}` }
    }

    return consumeSseStream<IncrementalImportResult>(
      res,
      { success: false, newMessageCount: 0, error: 'Unknown error' },
      onProgress
    )
  }

  async importDirectory(
    source: File[] | string,