Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/migrations/159_batch_image_foundation.sql

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+CREATE TABLE IF NOT EXISTS batch_image_jobs (
+    id BIGSERIAL PRIMARY KEY,
+    batch_id VARCHAR(64) NOT NULL UNIQUE,
+    user_id BIGINT NOT NULL,
+    api_key_id BIGINT,
+    account_id BIGINT,
+    provider VARCHAR(32) NOT NULL,
+    model VARCHAR(128) NOT NULL,
+    status VARCHAR(32) NOT NULL DEFAULT 'created',
+    provider_job_name VARCHAR(512),
+    gcs_input_uri VARCHAR(1024),
+    gcs_output_uri VARCHAR(1024),
+    item_count INTEGER NOT NULL,
+    success_count INTEGER NOT NULL DEFAULT 0,
+    fail_count INTEGER NOT NULL DEFAULT 0,
+    cancelled_count INTEGER NOT NULL DEFAULT 0,
+    estimated_cost DECIMAL(20,10) NOT NULL DEFAULT 0,
+    hold_amount DECIMAL(20,10),
+    actual_cost DECIMAL(20,10),
+    currency VARCHAR(16) NOT NULL DEFAULT 'USD',
+    hold_id VARCHAR(128),
+    idempotency_key VARCHAR(255),
+    request_hash VARCHAR(128),
+    manifest_hash VARCHAR(128),
+    retry_count INTEGER NOT NULL DEFAULT 0,
+    version INTEGER NOT NULL DEFAULT 0,
+    output_expires_at TIMESTAMPTZ,
+    input_deleted_at TIMESTAMPTZ,
+    output_deleted_at TIMESTAMPTZ,
+    last_error_code VARCHAR(128),
+    last_error_message TEXT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    submitted_at TIMESTAMPTZ,
+    started_at TIMESTAMPTZ,
+    finished_at TIMESTAMPTZ,
+    settled_at TIMESTAMPTZ
+);
+
+CREATE INDEX IF NOT EXISTS batch_image_jobs_user_created_at_idx ON batch_image_jobs (user_id, created_at);
+CREATE INDEX IF NOT EXISTS batch_image_jobs_status_idx ON batch_image_jobs (status);
+CREATE INDEX IF NOT EXISTS batch_image_jobs_provider_status_idx ON batch_image_jobs (provider, status);
+CREATE INDEX IF NOT EXISTS batch_image_jobs_idempotency_key_idx ON batch_image_jobs (idempotency_key)
+    WHERE idempotency_key IS NOT NULL AND idempotency_key <> '';
+CREATE UNIQUE INDEX IF NOT EXISTS batch_image_jobs_manifest_hash_uq ON batch_image_jobs (manifest_hash)
+    WHERE manifest_hash IS NOT NULL AND manifest_hash <> '';
+CREATE INDEX IF NOT EXISTS batch_image_jobs_output_expires_at_idx ON batch_image_jobs (output_expires_at);
+
+CREATE TABLE IF NOT EXISTS batch_image_items (
+    id BIGSERIAL PRIMARY KEY,
+    job_id VARCHAR(64) NOT NULL REFERENCES batch_image_jobs(batch_id) ON DELETE CASCADE,
+    custom_id VARCHAR(255) NOT NULL,
+    status VARCHAR(32) NOT NULL,
+    request_hash VARCHAR(128),
+    prompt_preview TEXT,
+    provider_source_object VARCHAR(1024),
+    source_line_number INTEGER,
+    source_byte_offset BIGINT,
+    source_byte_length BIGINT,
+    mime_type VARCHAR(128),
+    file_extension VARCHAR(32),
+    image_count INTEGER NOT NULL DEFAULT 0,
+    error_code VARCHAR(128),
+    error_message TEXT,
+    billed_amount DECIMAL(20,10),
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    indexed_at TIMESTAMPTZ
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS batch_image_items_job_custom_uq ON batch_image_items (job_id, custom_id);
+CREATE INDEX IF NOT EXISTS batch_image_items_job_status_idx ON batch_image_items (job_id, status);
+CREATE INDEX IF NOT EXISTS batch_image_items_provider_source_object_idx ON batch_image_items (provider_source_object);
+
+CREATE TABLE IF NOT EXISTS batch_image_events (
+    id BIGSERIAL PRIMARY KEY,
+    job_id VARCHAR(64) NOT NULL REFERENCES batch_image_jobs(batch_id) ON DELETE CASCADE,
+    event_type VARCHAR(64) NOT NULL,
+    payload JSONB,
+    event_hash VARCHAR(128),
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS batch_image_events_job_created_at_idx ON batch_image_events (job_id, created_at);
+CREATE INDEX IF NOT EXISTS batch_image_events_event_type_idx ON batch_image_events (event_type);
+CREATE UNIQUE INDEX IF NOT EXISTS batch_image_events_job_event_hash_uq ON batch_image_events (job_id, event_hash)
+    WHERE event_hash IS NOT NULL AND event_hash <> '';