feat(openflare): Pages 部署包改用 upload 本地文件存储框架

通过 upload.Ingest 摄取 zip 部署包并记录 upload_id，删除部署时调用
upload.Remove；Agent 下载改为 OpenDeploymentPackage 从存储后端流式输出。
新增 of_pages_deployments.upload_id 迁移，保留 artifact_path 兼容旧数据。

Wavelet/internal/db/migrator/goose/postgres/202606190014_add_pages_deployment_upload_id.sql

@@ -0,0 +1,14 @@
+-- +goose Up
+ALTER TABLE of_pages_deployments
+    ADD COLUMN IF NOT EXISTS upload_id BIGINT NOT NULL DEFAULT 0;
+
+CREATE INDEX IF NOT EXISTS idx_of_pages_deployments_upload_id ON of_pages_deployments (upload_id);
+
+ALTER TABLE of_pages_deployments
+    ALTER COLUMN artifact_path SET DEFAULT '';
+
+-- +goose Down
+DROP INDEX IF EXISTS idx_of_pages_deployments_upload_id;
+
+ALTER TABLE of_pages_deployments
+    DROP COLUMN IF EXISTS upload_id;

Wavelet/internal/db/migrator/goose/sqlite/202606190014_add_pages_deployment_upload_id.sql

@@ -0,0 +1,10 @@
+-- +goose Up
+ALTER TABLE of_pages_deployments
+    ADD COLUMN upload_id INTEGER NOT NULL DEFAULT 0;
+
+CREATE INDEX IF NOT EXISTS idx_of_pages_deployments_upload_id ON of_pages_deployments (upload_id);
+
+-- +goose Down
+DROP INDEX IF EXISTS idx_of_pages_deployments_upload_id;
+
+-- SQLite cannot drop columns without table rebuild; keep upload_id on rollback.