feat: 扩展 Rust gateway 全功能模块，新增 billing/crypto/wallet crate 及完整数据层

- 新增 aether-billing、aether-crypto、aether-wallet 独立 crate
- aether-data 扩展 repository 层：announcements、auth_modules、billing、
  candidate_selection、gemini_file_mappings、global_models、management_tokens、
  oauth_providers、proxy_nodes、quota、users、wallet 等模块
- aether-gateway 新增 api/auth/billing/control/middleware/scheduler/usage/
  video_tasks/hooks/maintenance/model_fetch/provider_transport 等功能模块
- 重构 executor decision 和 gateway state 为模块目录结构
- 新增 gateway router、frontdoor 路由层及对应测试
- Python 侧 API 路由重构，新增 compat/support 模块
- 前端 Logo 组件更新及 Provider 管理页面调整

crates/aether-gateway/src/video_tasks/helpers.rs

@@ -0,0 +1,25 @@
+use super::*;
+
+mod body;
+mod path;
+mod transport;
+mod util;
+
+pub(crate) use self::path::{
+    extract_gemini_short_id_from_cancel_path, extract_gemini_short_id_from_path,
+    extract_openai_task_id_from_cancel_path, extract_openai_task_id_from_content_path,
+    extract_openai_task_id_from_path, extract_openai_task_id_from_remix_path,
+};
+
+pub(crate) use self::body::{
+    context_text, context_u64, request_body_string, request_body_text, request_body_u32,
+};
+pub(crate) use self::path::{
+    current_unix_timestamp_secs, generate_local_short_id, local_status_from_stored,
+    resolve_local_video_registry_mutation,
+};
+pub(crate) use self::transport::{
+    build_video_follow_up_report_context, gemini_metadata_video_url, map_openai_task_status,
+    parse_video_content_variant, resolve_follow_up_auth,
+};
+pub(crate) use self::util::non_empty_owned;

crates/aether-gateway/src/video_tasks/helpers/body.rs

@@ -0,0 +1,53 @@
+use super::*;
+
+pub(crate) fn context_text(context: &Map<String, Value>, key: &str) -> Option<String> {
+    context
+        .get(key)
+        .and_then(Value::as_str)
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(str::to_string)
+}
+
+pub(crate) fn context_u64(context: &Map<String, Value>, key: &str) -> Option<u64> {
+    let value = context.get(key)?;
+    match value {
+        Value::Number(number) => number.as_u64(),
+        Value::String(text) => text.trim().parse().ok(),
+        _ => None,
+    }
+}
+
+pub(crate) fn request_body_text(context: &Map<String, Value>, key: &str) -> Option<String> {
+    context
+        .get("original_request_body")
+        .and_then(Value::as_object)
+        .and_then(|body| body.get(key))
+        .and_then(|value| match value {
+            Value::String(text) => Some(text.trim().to_string()),
+            Value::Number(number) => Some(number.to_string()),
+            _ => None,
+        })
+        .filter(|value| !value.is_empty())
+}
+
+pub(crate) fn request_body_string(body: &Value, key: &str) -> Option<String> {
+    body.as_object()
+        .and_then(|map| map.get(key))
+        .and_then(|value| match value {
+            Value::String(text) => Some(text.trim().to_string()),
+            Value::Number(number) => Some(number.to_string()),
+            _ => None,
+        })
+        .filter(|value| !value.is_empty())
+}
+
+pub(crate) fn request_body_u32(body: &Value, key: &str) -> Option<u32> {
+    body.as_object()
+        .and_then(|map| map.get(key))
+        .and_then(|value| match value {
+            Value::Number(number) => number.as_u64().and_then(|value| u32::try_from(value).ok()),
+            Value::String(text) => text.trim().parse().ok(),
+            _ => None,
+        })
+}

crates/aether-gateway/src/video_tasks/helpers/path.rs

@@ -0,0 +1,116 @@
+use super::*;
+
+pub(crate) fn extract_openai_task_id_from_path(path: &str) -> Option<&str> {
+    let suffix = path.strip_prefix("/v1/videos/")?;
+    if suffix.is_empty()
+        || suffix.contains('/')
+        || suffix.ends_with(":cancel")
+        || suffix.ends_with(":delete")
+    {
+        return None;
+    }
+    Some(suffix)
+}
+
+pub(crate) fn extract_gemini_short_id_from_path(path: &str) -> Option<&str> {
+    let operations_index = path.find("/operations/")?;
+    let suffix = &path[(operations_index + "/operations/".len())..];
+    if suffix.is_empty() || suffix.contains('/') || suffix.ends_with(":cancel") {
+        return None;
+    }
+    Some(suffix)
+}
+
+pub(crate) fn extract_openai_task_id_from_cancel_path(path: &str) -> Option<&str> {
+    let suffix = path.strip_prefix("/v1/videos/")?;
+    suffix
+        .strip_suffix("/cancel")
+        .filter(|value| !value.is_empty())
+}
+
+pub(crate) fn extract_openai_task_id_from_remix_path(path: &str) -> Option<&str> {
+    let suffix = path.strip_prefix("/v1/videos/")?;
+    suffix
+        .strip_suffix("/remix")
+        .filter(|value| !value.is_empty())
+}
+
+pub(crate) fn extract_openai_task_id_from_content_path(path: &str) -> Option<&str> {
+    let suffix = path.strip_prefix("/v1/videos/")?;
+    suffix
+        .strip_suffix("/content")
+        .filter(|value| !value.is_empty())
+}
+
+pub(crate) fn extract_gemini_short_id_from_cancel_path(path: &str) -> Option<&str> {
+    let operations_index = path.find("/operations/")?;
+    let suffix = &path[(operations_index + "/operations/".len())..];
+    let short_id = suffix.strip_suffix(":cancel")?;
+    if short_id.is_empty() || short_id.contains('/') {
+        return None;
+    }
+    Some(short_id)
+}
+
+pub(crate) fn resolve_local_video_registry_mutation(
+    truth_source_mode: VideoTaskTruthSourceMode,
+    request_path: &str,
+    report_kind: &str,
+) -> Option<LocalVideoTaskRegistryMutation> {
+    if truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+        return None;
+    }
+
+    match report_kind {
+        "openai_video_delete_sync_finalize" => {
+            let task_id = extract_openai_task_id_from_path(request_path)?;
+            Some(LocalVideoTaskRegistryMutation::OpenAiDeleted {
+                task_id: task_id.to_string(),
+            })
+        }
+        "openai_video_cancel_sync_finalize" => {
+            let task_id = extract_openai_task_id_from_cancel_path(request_path)?;
+            Some(LocalVideoTaskRegistryMutation::OpenAiCancelled {
+                task_id: task_id.to_string(),
+            })
+        }
+        "gemini_video_cancel_sync_finalize" => {
+            let short_id = extract_gemini_short_id_from_cancel_path(request_path)?;
+            Some(LocalVideoTaskRegistryMutation::GeminiCancelled {
+                short_id: short_id.to_string(),
+            })
+        }
+        _ => None,
+    }
+}
+
+pub(crate) fn current_unix_timestamp_secs() -> u64 {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs()
+}
+
+pub(crate) fn local_status_from_stored(status: StoredVideoTaskStatus) -> LocalVideoTaskStatus {
+    match status {
+        StoredVideoTaskStatus::Pending | StoredVideoTaskStatus::Submitted => {
+            LocalVideoTaskStatus::Submitted
+        }
+        StoredVideoTaskStatus::Queued => LocalVideoTaskStatus::Queued,
+        StoredVideoTaskStatus::Processing => LocalVideoTaskStatus::Processing,
+        StoredVideoTaskStatus::Completed => LocalVideoTaskStatus::Completed,
+        StoredVideoTaskStatus::Failed => LocalVideoTaskStatus::Failed,
+        StoredVideoTaskStatus::Cancelled => LocalVideoTaskStatus::Cancelled,
+        StoredVideoTaskStatus::Expired => LocalVideoTaskStatus::Expired,
+        StoredVideoTaskStatus::Deleted => LocalVideoTaskStatus::Deleted,
+    }
+}
+
+pub(crate) fn generate_local_short_id() -> String {
+    Uuid::new_v4()
+        .simple()
+        .to_string()
+        .chars()
+        .take(12)
+        .collect()
+}

crates/aether-gateway/src/video_tasks/helpers/transport.rs

@@ -0,0 +1,237 @@
+use super::*;
+
+impl LocalVideoTaskTransport {
+    pub(crate) fn from_plan(plan: &ExecutionPlan) -> Option<Self> {
+        let upstream_base_url = match plan.provider_api_format.as_str() {
+            "openai:video" => plan.url.split("/v1/videos").next()?.to_string(),
+            "gemini:video" => plan.url.split("/v1beta/").next()?.to_string(),
+            _ => return None,
+        };
+        if upstream_base_url.is_empty() {
+            return None;
+        }
+        Some(Self {
+            upstream_base_url,
+            provider_name: plan.provider_name.clone(),
+            provider_id: plan.provider_id.clone(),
+            endpoint_id: plan.endpoint_id.clone(),
+            key_id: plan.key_id.clone(),
+            headers: plan.headers.clone(),
+            content_type: plan.content_type.clone(),
+            model_name: plan.model_name.clone(),
+            proxy: plan.proxy.clone(),
+            tls_profile: plan.tls_profile.clone(),
+            timeouts: plan.timeouts.clone(),
+        })
+    }
+
+    pub(crate) fn from_provider_transport(
+        transport: &GatewayProviderTransportSnapshot,
+        api_format: &str,
+        model_name: Option<String>,
+    ) -> Option<Self> {
+        let (auth_header, auth_value) = match api_format {
+            "openai:video" => {
+                if !supports_local_standard_transport(transport, api_format) {
+                    return None;
+                }
+                resolve_local_standard_auth(transport)?
+            }
+            "gemini:video" => {
+                if !supports_local_gemini_transport(transport, api_format) {
+                    return None;
+                }
+                resolve_local_gemini_auth(transport)?
+            }
+            _ => return None,
+        };
+
+        let mut headers = BTreeMap::new();
+        headers.insert(auth_header, auth_value);
+
+        Some(Self {
+            upstream_base_url: transport.endpoint.base_url.clone(),
+            provider_name: Some(transport.provider.name.clone()),
+            provider_id: transport.provider.id.clone(),
+            endpoint_id: transport.endpoint.id.clone(),
+            key_id: transport.key.id.clone(),
+            headers,
+            content_type: Some("application/json".to_string()),
+            model_name,
+            proxy: None,
+            tls_profile: None,
+            timeouts: resolve_transport_execution_timeouts(transport),
+        })
+    }
+}
+
+impl LocalVideoTaskPersistence {
+    pub(crate) fn from_report_context(
+        report_context: &Map<String, Value>,
+        plan: &ExecutionPlan,
+    ) -> Self {
+        Self {
+            request_id: context_text(report_context, "request_id")
+                .unwrap_or_else(|| plan.request_id.clone()),
+            username: context_text(report_context, "username"),
+            api_key_name: context_text(report_context, "api_key_name"),
+            client_api_format: context_text(report_context, "client_api_format")
+                .unwrap_or_else(|| plan.client_api_format.clone()),
+            provider_api_format: context_text(report_context, "provider_api_format")
+                .unwrap_or_else(|| plan.provider_api_format.clone()),
+            original_request_body: report_context
+                .get("original_request_body")
+                .cloned()
+                .unwrap_or_else(|| Value::Object(Map::new())),
+            format_converted: report_context
+                .get("format_converted")
+                .and_then(Value::as_bool)
+                .unwrap_or(false),
+        }
+    }
+
+    pub(crate) fn from_stored_task(task: &StoredVideoTask) -> Option<Self> {
+        let client_api_format = non_empty_owned(task.client_api_format.as_ref())
+            .or_else(|| non_empty_owned(task.provider_api_format.as_ref()))?;
+        let provider_api_format = non_empty_owned(task.provider_api_format.as_ref())
+            .or_else(|| non_empty_owned(task.client_api_format.as_ref()))?;
+
+        Some(Self {
+            request_id: task.request_id.clone(),
+            username: task.username.clone(),
+            api_key_name: task.api_key_name.clone(),
+            client_api_format,
+            provider_api_format,
+            original_request_body: task
+                .original_request_body
+                .clone()
+                .unwrap_or_else(|| Value::Object(Map::new())),
+            format_converted: task.format_converted,
+        })
+    }
+}
+
+impl LocalVideoTaskStatus {
+    pub(crate) fn as_database_status(self) -> StoredVideoTaskStatus {
+        match self {
+            Self::Submitted => StoredVideoTaskStatus::Submitted,
+            Self::Queued => StoredVideoTaskStatus::Queued,
+            Self::Processing => StoredVideoTaskStatus::Processing,
+            Self::Completed => StoredVideoTaskStatus::Completed,
+            Self::Failed => StoredVideoTaskStatus::Failed,
+            Self::Cancelled => StoredVideoTaskStatus::Cancelled,
+            Self::Expired => StoredVideoTaskStatus::Expired,
+            Self::Deleted => StoredVideoTaskStatus::Deleted,
+        }
+    }
+}
+
+pub(crate) fn parse_video_content_variant(query_string: Option<&str>) -> Option<&'static str> {
+    let mut variant = "video";
+    if let Some(query_string) = query_string {
+        for (key, value) in url::form_urlencoded::parse(query_string.as_bytes()) {
+            if key == "variant" {
+                variant = match value.as_ref() {
+                    "video" => "video",
+                    "thumbnail" => "thumbnail",
+                    "spritesheet" => "spritesheet",
+                    _ => return None,
+                };
+            }
+        }
+    }
+    Some(variant)
+}
+
+pub(crate) fn gemini_metadata_video_url(metadata: &Value) -> Option<String> {
+    metadata
+        .get("response")
+        .and_then(|value| value.get("generateVideoResponse"))
+        .and_then(|value| value.get("generatedSamples"))
+        .and_then(Value::as_array)
+        .and_then(|value| value.first())
+        .and_then(|value| value.get("video"))
+        .and_then(|value| value.get("uri"))
+        .and_then(Value::as_str)
+        .map(str::to_string)
+}
+
+pub(crate) fn build_video_follow_up_report_context(
+    request_id: &str,
+    user_id: &str,
+    api_key_id: &str,
+    task_id: &str,
+    model_name: Option<String>,
+    transport: &LocalVideoTaskTransport,
+    client_api_format: &str,
+    provider_api_format: &str,
+) -> Value {
+    let mut context = Map::new();
+    context.insert(
+        "request_id".to_string(),
+        Value::String(request_id.to_string()),
+    );
+    context.insert("user_id".to_string(), Value::String(user_id.to_string()));
+    context.insert(
+        "api_key_id".to_string(),
+        Value::String(api_key_id.to_string()),
+    );
+    context.insert("task_id".to_string(), Value::String(task_id.to_string()));
+    context.insert(
+        "provider_id".to_string(),
+        Value::String(transport.provider_id.clone()),
+    );
+    context.insert(
+        "endpoint_id".to_string(),
+        Value::String(transport.endpoint_id.clone()),
+    );
+    context.insert(
+        "key_id".to_string(),
+        Value::String(transport.key_id.clone()),
+    );
+    context.insert(
+        "client_api_format".to_string(),
+        Value::String(client_api_format.to_string()),
+    );
+    context.insert(
+        "provider_api_format".to_string(),
+        Value::String(provider_api_format.to_string()),
+    );
+    if let Some(provider_name) = transport.provider_name.clone() {
+        context.insert("provider_name".to_string(), Value::String(provider_name));
+    }
+    if let Some(model_name) = model_name.filter(|value| !value.is_empty()) {
+        context.insert("model".to_string(), Value::String(model_name));
+    }
+    Value::Object(context)
+}
+
+pub(crate) fn map_openai_task_status(status: LocalVideoTaskStatus) -> &'static str {
+    match status {
+        LocalVideoTaskStatus::Submitted | LocalVideoTaskStatus::Queued => "queued",
+        LocalVideoTaskStatus::Processing => "processing",
+        LocalVideoTaskStatus::Completed => "completed",
+        LocalVideoTaskStatus::Failed
+        | LocalVideoTaskStatus::Cancelled
+        | LocalVideoTaskStatus::Expired => "failed",
+        LocalVideoTaskStatus::Deleted => "deleted",
+    }
+}
+
+pub(crate) fn resolve_follow_up_auth(
+    user_id: Option<&str>,
+    api_key_id: Option<&str>,
+    auth_context: Option<&GatewayControlAuthContext>,
+) -> Option<(String, String)> {
+    let resolved_user_id = user_id
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(str::to_string)
+        .or_else(|| auth_context.map(|value| value.user_id.clone()))?;
+    let resolved_api_key_id = api_key_id
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(str::to_string)
+        .or_else(|| auth_context.map(|value| value.api_key_id.clone()))?;
+    Some((resolved_user_id, resolved_api_key_id))
+}

crates/aether-gateway/src/video_tasks/helpers/util.rs

@@ -0,0 +1,7 @@
+pub(crate) fn non_empty_owned(value: Option<&String>) -> Option<String> {
+    value
+        .map(String::as_str)
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(str::to_string)
+}

crates/aether-gateway/src/video_tasks/mod.rs

@@ -0,0 +1,57 @@
+use std::collections::BTreeMap;
+use std::path::{Path, PathBuf};
+use std::sync::{Arc, Mutex};
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use aether_contracts::{ExecutionPlan, ExecutionTimeouts, ProxySnapshot, RequestBody};
+use aether_data::repository::video_tasks::{
+    StoredVideoTask, UpsertVideoTask, VideoTaskStatus as StoredVideoTaskStatus,
+};
+use serde::{Deserialize, Serialize};
+use serde_json::{json, Map, Value};
+use uuid::Uuid;
+
+use crate::gateway::provider_transport::{
+    resolve_local_gemini_auth, resolve_local_standard_auth, resolve_transport_execution_timeouts,
+    supports_local_gemini_transport, supports_local_standard_transport,
+    GatewayProviderTransportSnapshot,
+};
+use crate::gateway::GatewayControlAuthContext;
+
+const DEFAULT_VIDEO_TASK_POLL_INTERVAL_SECONDS: u32 = 10;
+const DEFAULT_VIDEO_TASK_MAX_POLL_COUNT: u32 = 360;
+
+pub(crate) use self::service::VideoTaskService;
+pub use self::types::VideoTaskTruthSourceMode;
+pub(crate) use self::types::{
+    GeminiVideoTaskSeed, LocalVideoTaskContentAction, LocalVideoTaskFollowUpPlan,
+    LocalVideoTaskPersistence, LocalVideoTaskReadRefreshPlan, LocalVideoTaskReadResponse,
+    LocalVideoTaskRegistryMutation, LocalVideoTaskSeed, LocalVideoTaskSnapshot,
+    LocalVideoTaskStatus, LocalVideoTaskSuccessPlan, LocalVideoTaskTransport, OpenAiVideoTaskSeed,
+    VideoTaskSyncReportMode,
+};
+
+pub(crate) use self::helpers::{
+    extract_gemini_short_id_from_cancel_path, extract_gemini_short_id_from_path,
+    extract_openai_task_id_from_cancel_path, extract_openai_task_id_from_content_path,
+    extract_openai_task_id_from_path, extract_openai_task_id_from_remix_path,
+};
+
+use self::helpers::{
+    build_video_follow_up_report_context, context_text, context_u64, current_unix_timestamp_secs,
+    gemini_metadata_video_url, generate_local_short_id, local_status_from_stored,
+    map_openai_task_status, non_empty_owned, parse_video_content_variant, request_body_string,
+    request_body_text, request_body_u32, resolve_follow_up_auth,
+    resolve_local_video_registry_mutation,
+};
+use self::store::{FileVideoTaskStore, InMemoryVideoTaskStore, VideoTaskStore};
+use self::types::LocalVideoTaskProjectionTarget;
+
+mod helpers;
+mod seed;
+mod service;
+mod store;
+mod types;
+
+#[cfg(test)]
+mod tests;

crates/aether-gateway/src/video_tasks/seed.rs

@@ -0,0 +1,6 @@
+use super::*;
+
+mod gemini;
+mod openai;
+mod snapshot;
+mod sync;

crates/aether-gateway/src/video_tasks/seed/gemini.rs

@@ -0,0 +1,271 @@
+use super::*;
+
+impl GeminiVideoTaskSeed {
+    pub(crate) fn apply_provider_body(&mut self, provider_body: &Map<String, Value>) {
+        let done = provider_body
+            .get("done")
+            .and_then(Value::as_bool)
+            .unwrap_or(false);
+        if done {
+            let error = provider_body.get("error").and_then(Value::as_object);
+            if let Some(error) = error {
+                self.status = LocalVideoTaskStatus::Failed;
+                self.progress_percent = 100;
+                self.error_code = error
+                    .get("code")
+                    .and_then(Value::as_str)
+                    .map(str::to_string);
+                self.error_message = error
+                    .get("message")
+                    .and_then(Value::as_str)
+                    .map(str::to_string);
+            } else {
+                self.status = LocalVideoTaskStatus::Completed;
+                self.progress_percent = 100;
+                self.error_code = None;
+                self.error_message = None;
+            }
+            self.metadata = json!({});
+            return;
+        }
+
+        self.status = LocalVideoTaskStatus::Processing;
+        self.progress_percent = 50;
+        self.error_code = None;
+        self.error_message = None;
+        self.metadata = provider_body
+            .get("metadata")
+            .cloned()
+            .unwrap_or_else(|| json!({}));
+    }
+
+    pub(crate) fn build_get_follow_up_plan(&self, trace_id: &str) -> Option<ExecutionPlan> {
+        if !matches!(
+            self.status,
+            LocalVideoTaskStatus::Submitted
+                | LocalVideoTaskStatus::Queued
+                | LocalVideoTaskStatus::Processing
+        ) {
+            return None;
+        }
+
+        let operation_path = self.resolve_operation_path()?;
+        let mut headers = self.transport.headers.clone();
+        headers.remove("content-type");
+        headers.remove("content-length");
+
+        Some(ExecutionPlan {
+            request_id: trace_id.to_string(),
+            candidate_id: None,
+            provider_name: self.transport.provider_name.clone(),
+            provider_id: self.transport.provider_id.clone(),
+            endpoint_id: self.transport.endpoint_id.clone(),
+            key_id: self.transport.key_id.clone(),
+            method: "GET".to_string(),
+            url: format!(
+                "{}/v1beta/{}",
+                self.transport.upstream_base_url.trim_end_matches('/'),
+                operation_path
+            ),
+            headers,
+            content_type: None,
+            content_encoding: None,
+            body: RequestBody {
+                json_body: None,
+                body_bytes_b64: None,
+                body_ref: None,
+            },
+            stream: false,
+            client_api_format: "gemini:video".to_string(),
+            provider_api_format: "gemini:video".to_string(),
+            model_name: Some(self.model.clone()),
+            proxy: self.transport.proxy.clone(),
+            tls_profile: self.transport.tls_profile.clone(),
+            timeouts: self.transport.timeouts.clone(),
+        })
+    }
+
+    fn resolve_operation_path(&self) -> Option<String> {
+        if self.upstream_operation_name.starts_with("models/") {
+            Some(self.upstream_operation_name.clone())
+        } else if self.upstream_operation_name.starts_with("operations/") && !self.model.is_empty()
+        {
+            Some(format!(
+                "models/{}/{}",
+                self.model, self.upstream_operation_name
+            ))
+        } else {
+            None
+        }
+    }
+
+    pub(crate) fn build_cancel_follow_up_plan(
+        &self,
+        auth_context: Option<&GatewayControlAuthContext>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskFollowUpPlan> {
+        if !matches!(
+            self.status,
+            LocalVideoTaskStatus::Submitted
+                | LocalVideoTaskStatus::Queued
+                | LocalVideoTaskStatus::Processing
+        ) {
+            return None;
+        }
+        let (user_id, api_key_id) = resolve_follow_up_auth(
+            self.user_id.as_deref(),
+            self.api_key_id.as_deref(),
+            auth_context,
+        )?;
+
+        let operation_path = self.resolve_operation_path()?;
+
+        let mut headers = self.transport.headers.clone();
+        let content_type = self
+            .transport
+            .content_type
+            .clone()
+            .unwrap_or_else(|| "application/json".to_string());
+        headers
+            .entry("content-type".to_string())
+            .or_insert_with(|| content_type.clone());
+
+        Some(LocalVideoTaskFollowUpPlan {
+            plan: ExecutionPlan {
+                request_id: trace_id.to_string(),
+                candidate_id: None,
+                provider_name: self.transport.provider_name.clone(),
+                provider_id: self.transport.provider_id.clone(),
+                endpoint_id: self.transport.endpoint_id.clone(),
+                key_id: self.transport.key_id.clone(),
+                method: "POST".to_string(),
+                url: format!(
+                    "{}/v1beta/{}:cancel",
+                    self.transport.upstream_base_url.trim_end_matches('/'),
+                    operation_path
+                ),
+                headers,
+                content_type: Some(content_type),
+                content_encoding: None,
+                body: RequestBody::from_json(json!({})),
+                stream: false,
+                client_api_format: "gemini:video".to_string(),
+                provider_api_format: "gemini:video".to_string(),
+                model_name: Some(self.model.clone()),
+                proxy: self.transport.proxy.clone(),
+                tls_profile: self.transport.tls_profile.clone(),
+                timeouts: self.transport.timeouts.clone(),
+            },
+            report_kind: Some("gemini_video_cancel_sync_finalize".to_string()),
+            report_context: Some(build_video_follow_up_report_context(
+                &self.persistence.request_id,
+                &user_id,
+                &api_key_id,
+                &self.local_short_id,
+                Some(self.model.clone()),
+                &self.transport,
+                "gemini:video",
+                "gemini:video",
+            )),
+        })
+    }
+
+    pub(crate) fn client_body_json(&self) -> Value {
+        let operation_name = format!("models/{}/operations/{}", self.model, self.local_short_id);
+        match self.status {
+            LocalVideoTaskStatus::Completed => json!({
+                "name": operation_name,
+                "done": true,
+                "response": {
+                    "generateVideoResponse": {
+                        "generatedSamples": [
+                            {
+                                "video": {
+                                    "uri": format!("/v1beta/files/aev_{}:download?alt=media", self.local_short_id),
+                                    "mimeType": "video/mp4"
+                                }
+                            }
+                        ]
+                    }
+                }
+            }),
+            LocalVideoTaskStatus::Failed | LocalVideoTaskStatus::Expired => json!({
+                "name": operation_name,
+                "done": true,
+                "error": {
+                    "code": self.error_code.clone().unwrap_or_else(|| "UNKNOWN".to_string()),
+                    "message": self
+                        .error_message
+                        .clone()
+                        .unwrap_or_else(|| "Video generation failed".to_string()),
+                }
+            }),
+            _ => json!({
+                "name": operation_name,
+                "done": false,
+                "metadata": self.metadata.clone(),
+            }),
+        }
+    }
+
+    pub(crate) fn to_upsert_record(&self) -> UpsertVideoTask {
+        let now_unix_secs = current_unix_timestamp_secs();
+        let next_poll_at_unix_secs = match self.status {
+            LocalVideoTaskStatus::Submitted
+            | LocalVideoTaskStatus::Queued
+            | LocalVideoTaskStatus::Processing => Some(
+                now_unix_secs.saturating_add(u64::from(DEFAULT_VIDEO_TASK_POLL_INTERVAL_SECONDS)),
+            ),
+            _ => None,
+        };
+        UpsertVideoTask {
+            id: self.local_short_id.clone(),
+            short_id: Some(self.local_short_id.clone()),
+            request_id: self.persistence.request_id.clone(),
+            user_id: self.user_id.clone(),
+            api_key_id: self.api_key_id.clone(),
+            username: self.persistence.username.clone(),
+            api_key_name: self.persistence.api_key_name.clone(),
+            external_task_id: Some(self.upstream_operation_name.clone()),
+            provider_id: Some(self.transport.provider_id.clone()),
+            endpoint_id: Some(self.transport.endpoint_id.clone()),
+            key_id: Some(self.transport.key_id.clone()),
+            client_api_format: Some(self.persistence.client_api_format.clone()),
+            provider_api_format: Some(self.persistence.provider_api_format.clone()),
+            format_converted: self.persistence.format_converted,
+            model: Some(self.model.clone()),
+            prompt: request_body_string(&self.persistence.original_request_body, "prompt")
+                .or_else(|| Some(String::new())),
+            original_request_body: Some(self.persistence.original_request_body.clone()),
+            duration_seconds: request_body_u32(&self.persistence.original_request_body, "seconds")
+                .or_else(|| {
+                    request_body_u32(&self.persistence.original_request_body, "duration_seconds")
+                }),
+            resolution: request_body_string(&self.persistence.original_request_body, "resolution"),
+            aspect_ratio: request_body_string(
+                &self.persistence.original_request_body,
+                "aspect_ratio",
+            ),
+            size: request_body_string(&self.persistence.original_request_body, "size"),
+            status: self.status.as_database_status(),
+            progress_percent: self.progress_percent,
+            progress_message: None,
+            retry_count: 0,
+            poll_interval_seconds: DEFAULT_VIDEO_TASK_POLL_INTERVAL_SECONDS,
+            next_poll_at_unix_secs,
+            poll_count: 0,
+            max_poll_count: DEFAULT_VIDEO_TASK_MAX_POLL_COUNT,
+            created_at_unix_secs: now_unix_secs,
+            submitted_at_unix_secs: Some(now_unix_secs),
+            completed_at_unix_secs: None,
+            updated_at_unix_secs: now_unix_secs,
+            error_code: self.error_code.clone(),
+            error_message: self.error_message.clone(),
+            video_url: gemini_metadata_video_url(&self.metadata),
+            request_metadata: Some(json!({
+                "rust_owner": "async_task",
+                "rust_local_snapshot": LocalVideoTaskSnapshot::Gemini(self.clone()),
+            })),
+        }
+    }
+}

crates/aether-gateway/src/video_tasks/seed/openai.rs

@@ -0,0 +1,6 @@
+use super::*;
+
+mod client;
+mod follow_up;
+mod persist;
+mod provider;

crates/aether-gateway/src/video_tasks/seed/openai/client.rs

@@ -0,0 +1,160 @@
+use super::*;
+
+impl OpenAiVideoTaskSeed {
+    pub(crate) fn build_content_stream_action(
+        &self,
+        query_string: Option<&str>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskContentAction> {
+        match self.status {
+            LocalVideoTaskStatus::Submitted
+            | LocalVideoTaskStatus::Queued
+            | LocalVideoTaskStatus::Processing => {
+                return Some(LocalVideoTaskContentAction::Immediate {
+                    status_code: 202,
+                    body_json: json!({
+                        "detail": format!(
+                            "Video is still processing (status: {})",
+                            map_openai_task_status(self.status)
+                        )
+                    }),
+                });
+            }
+            LocalVideoTaskStatus::Failed | LocalVideoTaskStatus::Expired => {
+                return Some(LocalVideoTaskContentAction::Immediate {
+                    status_code: 422,
+                    body_json: json!({
+                        "detail": format!(
+                            "Video generation failed: {}",
+                            self.error_message
+                                .clone()
+                                .unwrap_or_else(|| "Unknown error".to_string())
+                        )
+                    }),
+                });
+            }
+            LocalVideoTaskStatus::Cancelled => {
+                return Some(LocalVideoTaskContentAction::Immediate {
+                    status_code: 404,
+                    body_json: json!({"detail": "Video task was cancelled"}),
+                });
+            }
+            LocalVideoTaskStatus::Deleted => {
+                return Some(LocalVideoTaskContentAction::Immediate {
+                    status_code: 404,
+                    body_json: json!({"detail": "Video task not found"}),
+                });
+            }
+            LocalVideoTaskStatus::Completed => {}
+        }
+
+        let variant = parse_video_content_variant(query_string)?;
+        let (url, headers) = if variant == "video" {
+            if let Some(video_url) = self
+                .video_url
+                .clone()
+                .filter(|value| value.starts_with("http://") || value.starts_with("https://"))
+            {
+                (video_url, BTreeMap::new())
+            } else {
+                let mut headers = self.transport.headers.clone();
+                headers.remove("content-type");
+                headers.remove("content-length");
+                (
+                    format!(
+                        "{}/v1/videos/{}/content",
+                        self.transport.upstream_base_url.trim_end_matches('/'),
+                        self.upstream_task_id
+                    ),
+                    headers,
+                )
+            }
+        } else {
+            let mut headers = self.transport.headers.clone();
+            headers.remove("content-type");
+            headers.remove("content-length");
+            (
+                format!(
+                    "{}/v1/videos/{}/content?variant={variant}",
+                    self.transport.upstream_base_url.trim_end_matches('/'),
+                    self.upstream_task_id
+                ),
+                headers,
+            )
+        };
+
+        Some(LocalVideoTaskContentAction::StreamPlan(ExecutionPlan {
+            request_id: trace_id.to_string(),
+            candidate_id: None,
+            provider_name: self.transport.provider_name.clone(),
+            provider_id: self.transport.provider_id.clone(),
+            endpoint_id: self.transport.endpoint_id.clone(),
+            key_id: self.transport.key_id.clone(),
+            method: "GET".to_string(),
+            url,
+            headers,
+            content_type: None,
+            content_encoding: None,
+            body: RequestBody {
+                json_body: None,
+                body_bytes_b64: None,
+                body_ref: None,
+            },
+            stream: true,
+            client_api_format: "openai:video".to_string(),
+            provider_api_format: "openai:video".to_string(),
+            model_name: self
+                .model
+                .clone()
+                .or_else(|| self.transport.model_name.clone()),
+            proxy: self.transport.proxy.clone(),
+            tls_profile: self.transport.tls_profile.clone(),
+            timeouts: self.transport.timeouts.clone(),
+        }))
+    }
+
+    pub(crate) fn client_body_json(&self) -> Value {
+        let mut body = json!({
+            "id": self.local_task_id,
+            "object": "video",
+            "status": map_openai_task_status(self.status),
+            "progress": self.progress_percent,
+            "created_at": self.created_at_unix_secs,
+        });
+
+        if let Some(model) = &self.model {
+            body["model"] = Value::String(model.clone());
+        }
+        if let Some(prompt) = &self.prompt {
+            body["prompt"] = Value::String(prompt.clone());
+        }
+        if let Some(size) = &self.size {
+            body["size"] = Value::String(size.clone());
+        }
+        if let Some(seconds) = &self.seconds {
+            body["seconds"] = Value::String(seconds.clone());
+        }
+        if let Some(remixed_from_video_id) = &self.remixed_from_video_id {
+            body["remixed_from_video_id"] = Value::String(remixed_from_video_id.clone());
+        }
+        if let Some(completed_at) = self.completed_at_unix_secs {
+            body["completed_at"] = Value::Number(completed_at.into());
+        }
+        if let Some(expires_at) = self.expires_at_unix_secs {
+            body["expires_at"] = Value::Number(expires_at.into());
+        }
+        if self.status == LocalVideoTaskStatus::Failed
+            || self.status == LocalVideoTaskStatus::Expired
+        {
+            body["error"] = json!({
+                "code": self.error_code.clone().unwrap_or_else(|| "unknown".to_string()),
+                "message": self
+                    .error_message
+                    .clone()
+                    .unwrap_or_else(|| "Video generation failed".to_string()),
+            });
+        }
+
+        body
+    }
+}

crates/aether-gateway/src/video_tasks/seed/openai/follow_up.rs

@@ -0,0 +1,272 @@
+use super::*;
+
+impl OpenAiVideoTaskSeed {
+    pub(crate) fn build_delete_follow_up_plan(
+        &self,
+        auth_context: Option<&GatewayControlAuthContext>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskFollowUpPlan> {
+        if !matches!(
+            self.status,
+            LocalVideoTaskStatus::Completed | LocalVideoTaskStatus::Failed
+        ) {
+            return None;
+        }
+        let (user_id, api_key_id) = resolve_follow_up_auth(
+            self.user_id.as_deref(),
+            self.api_key_id.as_deref(),
+            auth_context,
+        )?;
+
+        let mut headers = self.transport.headers.clone();
+        headers.remove("content-type");
+        headers.remove("content-length");
+
+        Some(LocalVideoTaskFollowUpPlan {
+            plan: ExecutionPlan {
+                request_id: trace_id.to_string(),
+                candidate_id: None,
+                provider_name: self.transport.provider_name.clone(),
+                provider_id: self.transport.provider_id.clone(),
+                endpoint_id: self.transport.endpoint_id.clone(),
+                key_id: self.transport.key_id.clone(),
+                method: "DELETE".to_string(),
+                url: format!(
+                    "{}/v1/videos/{}",
+                    self.transport.upstream_base_url.trim_end_matches('/'),
+                    self.upstream_task_id
+                ),
+                headers,
+                content_type: None,
+                content_encoding: None,
+                body: RequestBody {
+                    json_body: None,
+                    body_bytes_b64: None,
+                    body_ref: None,
+                },
+                stream: false,
+                client_api_format: "openai:video".to_string(),
+                provider_api_format: "openai:video".to_string(),
+                model_name: self
+                    .model
+                    .clone()
+                    .or_else(|| self.transport.model_name.clone()),
+                proxy: self.transport.proxy.clone(),
+                tls_profile: self.transport.tls_profile.clone(),
+                timeouts: self.transport.timeouts.clone(),
+            },
+            report_kind: Some("openai_video_delete_sync_finalize".to_string()),
+            report_context: Some(build_video_follow_up_report_context(
+                &self.persistence.request_id,
+                &user_id,
+                &api_key_id,
+                &self.local_task_id,
+                self.model
+                    .clone()
+                    .or_else(|| self.transport.model_name.clone()),
+                &self.transport,
+                "openai:video",
+                "openai:video",
+            )),
+        })
+    }
+
+    pub(crate) fn build_get_follow_up_plan(&self, trace_id: &str) -> Option<ExecutionPlan> {
+        if !matches!(
+            self.status,
+            LocalVideoTaskStatus::Submitted
+                | LocalVideoTaskStatus::Queued
+                | LocalVideoTaskStatus::Processing
+        ) {
+            return None;
+        }
+
+        let mut headers = self.transport.headers.clone();
+        headers.remove("content-type");
+        headers.remove("content-length");
+
+        Some(ExecutionPlan {
+            request_id: trace_id.to_string(),
+            candidate_id: None,
+            provider_name: self.transport.provider_name.clone(),
+            provider_id: self.transport.provider_id.clone(),
+            endpoint_id: self.transport.endpoint_id.clone(),
+            key_id: self.transport.key_id.clone(),
+            method: "GET".to_string(),
+            url: format!(
+                "{}/v1/videos/{}",
+                self.transport.upstream_base_url.trim_end_matches('/'),
+                self.upstream_task_id
+            ),
+            headers,
+            content_type: None,
+            content_encoding: None,
+            body: RequestBody {
+                json_body: None,
+                body_bytes_b64: None,
+                body_ref: None,
+            },
+            stream: false,
+            client_api_format: "openai:video".to_string(),
+            provider_api_format: "openai:video".to_string(),
+            model_name: self
+                .model
+                .clone()
+                .or_else(|| self.transport.model_name.clone()),
+            proxy: self.transport.proxy.clone(),
+            tls_profile: self.transport.tls_profile.clone(),
+            timeouts: self.transport.timeouts.clone(),
+        })
+    }
+
+    pub(crate) fn build_cancel_follow_up_plan(
+        &self,
+        auth_context: Option<&GatewayControlAuthContext>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskFollowUpPlan> {
+        if !matches!(
+            self.status,
+            LocalVideoTaskStatus::Submitted
+                | LocalVideoTaskStatus::Queued
+                | LocalVideoTaskStatus::Processing
+        ) {
+            return None;
+        }
+        let (user_id, api_key_id) = resolve_follow_up_auth(
+            self.user_id.as_deref(),
+            self.api_key_id.as_deref(),
+            auth_context,
+        )?;
+
+        let mut headers = self.transport.headers.clone();
+        headers.remove("content-type");
+        headers.remove("content-length");
+
+        Some(LocalVideoTaskFollowUpPlan {
+            plan: ExecutionPlan {
+                request_id: trace_id.to_string(),
+                candidate_id: None,
+                provider_name: self.transport.provider_name.clone(),
+                provider_id: self.transport.provider_id.clone(),
+                endpoint_id: self.transport.endpoint_id.clone(),
+                key_id: self.transport.key_id.clone(),
+                method: "DELETE".to_string(),
+                url: format!(
+                    "{}/v1/videos/{}",
+                    self.transport.upstream_base_url.trim_end_matches('/'),
+                    self.upstream_task_id
+                ),
+                headers,
+                content_type: None,
+                content_encoding: None,
+                body: RequestBody {
+                    json_body: None,
+                    body_bytes_b64: None,
+                    body_ref: None,
+                },
+                stream: false,
+                client_api_format: "openai:video".to_string(),
+                provider_api_format: "openai:video".to_string(),
+                model_name: self
+                    .model
+                    .clone()
+                    .or_else(|| self.transport.model_name.clone()),
+                proxy: self.transport.proxy.clone(),
+                tls_profile: self.transport.tls_profile.clone(),
+                timeouts: self.transport.timeouts.clone(),
+            },
+            report_kind: Some("openai_video_cancel_sync_finalize".to_string()),
+            report_context: Some(build_video_follow_up_report_context(
+                &self.persistence.request_id,
+                &user_id,
+                &api_key_id,
+                &self.local_task_id,
+                self.model
+                    .clone()
+                    .or_else(|| self.transport.model_name.clone()),
+                &self.transport,
+                "openai:video",
+                "openai:video",
+            )),
+        })
+    }
+
+    pub(crate) fn build_remix_follow_up_plan(
+        &self,
+        body_json: &Value,
+        auth_context: Option<&GatewayControlAuthContext>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskFollowUpPlan> {
+        if !matches!(self.status, LocalVideoTaskStatus::Completed) {
+            return None;
+        }
+        if body_json.is_null() {
+            return None;
+        }
+        let (user_id, api_key_id) = resolve_follow_up_auth(
+            self.user_id.as_deref(),
+            self.api_key_id.as_deref(),
+            auth_context,
+        )?;
+
+        let mut headers = self.transport.headers.clone();
+        headers.remove("content-length");
+        let content_type = self
+            .transport
+            .content_type
+            .clone()
+            .unwrap_or_else(|| "application/json".to_string());
+        headers
+            .entry("content-type".to_string())
+            .or_insert_with(|| content_type.clone());
+
+        let mut report_context = build_video_follow_up_report_context(
+            &self.persistence.request_id,
+            &user_id,
+            &api_key_id,
+            &self.local_task_id,
+            self.model
+                .clone()
+                .or_else(|| self.transport.model_name.clone()),
+            &self.transport,
+            "openai:video",
+            "openai:video",
+        );
+        if let Some(report_context_object) = report_context.as_object_mut() {
+            report_context_object.insert("original_request_body".to_string(), body_json.clone());
+        }
+
+        Some(LocalVideoTaskFollowUpPlan {
+            plan: ExecutionPlan {
+                request_id: trace_id.to_string(),
+                candidate_id: None,
+                provider_name: self.transport.provider_name.clone(),
+                provider_id: self.transport.provider_id.clone(),
+                endpoint_id: self.transport.endpoint_id.clone(),
+                key_id: self.transport.key_id.clone(),
+                method: "POST".to_string(),
+                url: format!(
+                    "{}/v1/videos/{}/remix",
+                    self.transport.upstream_base_url.trim_end_matches('/'),
+                    self.upstream_task_id
+                ),
+                headers,
+                content_type: Some(content_type),
+                content_encoding: None,
+                body: RequestBody::from_json(body_json.clone()),
+                stream: false,
+                client_api_format: "openai:video".to_string(),
+                provider_api_format: "openai:video".to_string(),
+                model_name: self
+                    .model
+                    .clone()
+                    .or_else(|| self.transport.model_name.clone()),
+                proxy: self.transport.proxy.clone(),
+                tls_profile: self.transport.tls_profile.clone(),
+                timeouts: self.transport.timeouts.clone(),
+            },
+            report_kind: Some("openai_video_remix_sync_finalize".to_string()),
+            report_context: Some(report_context),
+        })
+    }
+}

crates/aether-gateway/src/video_tasks/seed/openai/persist.rs

@@ -0,0 +1,61 @@
+use super::*;
+
+impl OpenAiVideoTaskSeed {
+    pub(crate) fn to_upsert_record(&self) -> UpsertVideoTask {
+        let now_unix_secs = current_unix_timestamp_secs();
+        let next_poll_at_unix_secs = match self.status {
+            LocalVideoTaskStatus::Submitted
+            | LocalVideoTaskStatus::Queued
+            | LocalVideoTaskStatus::Processing => Some(
+                self.created_at_unix_secs
+                    .saturating_add(u64::from(DEFAULT_VIDEO_TASK_POLL_INTERVAL_SECONDS)),
+            ),
+            _ => None,
+        };
+        UpsertVideoTask {
+            id: self.local_task_id.clone(),
+            short_id: None,
+            request_id: self.persistence.request_id.clone(),
+            user_id: self.user_id.clone(),
+            api_key_id: self.api_key_id.clone(),
+            username: self.persistence.username.clone(),
+            api_key_name: self.persistence.api_key_name.clone(),
+            external_task_id: Some(self.upstream_task_id.clone()),
+            provider_id: Some(self.transport.provider_id.clone()),
+            endpoint_id: Some(self.transport.endpoint_id.clone()),
+            key_id: Some(self.transport.key_id.clone()),
+            client_api_format: Some(self.persistence.client_api_format.clone()),
+            provider_api_format: Some(self.persistence.provider_api_format.clone()),
+            format_converted: self.persistence.format_converted,
+            model: self.model.clone().or_else(|| Some(String::new())),
+            prompt: self.prompt.clone().or_else(|| Some(String::new())),
+            original_request_body: Some(self.persistence.original_request_body.clone()),
+            duration_seconds: request_body_u32(&self.persistence.original_request_body, "seconds"),
+            resolution: request_body_string(&self.persistence.original_request_body, "resolution"),
+            aspect_ratio: request_body_string(
+                &self.persistence.original_request_body,
+                "aspect_ratio",
+            ),
+            size: self.size.clone(),
+            status: self.status.as_database_status(),
+            progress_percent: self.progress_percent,
+            progress_message: None,
+            retry_count: 0,
+            poll_interval_seconds: DEFAULT_VIDEO_TASK_POLL_INTERVAL_SECONDS,
+            next_poll_at_unix_secs,
+            poll_count: 0,
+            max_poll_count: DEFAULT_VIDEO_TASK_MAX_POLL_COUNT,
+            created_at_unix_secs: self.created_at_unix_secs,
+            submitted_at_unix_secs: Some(self.created_at_unix_secs),
+            completed_at_unix_secs: self.completed_at_unix_secs,
+            updated_at_unix_secs: self.completed_at_unix_secs.unwrap_or(now_unix_secs),
+            error_code: self.error_code.clone(),
+            error_message: self.error_message.clone(),
+            video_url: self.video_url.clone(),
+            request_metadata: Some(json!({
+                "rust_owner": "async_task",
+                "rust_local_snapshot": LocalVideoTaskSnapshot::OpenAi(self.clone()),
+            })),
+        }
+    }
+}

crates/aether-gateway/src/video_tasks/seed/openai/provider.rs

@@ -0,0 +1,46 @@
+use super::*;
+
+impl OpenAiVideoTaskSeed {
+    pub(crate) fn apply_provider_body(&mut self, provider_body: &Map<String, Value>) {
+        let raw_status = provider_body
+            .get("status")
+            .and_then(Value::as_str)
+            .map(str::trim)
+            .unwrap_or_default();
+        self.status = match raw_status {
+            "queued" => LocalVideoTaskStatus::Queued,
+            "processing" => LocalVideoTaskStatus::Processing,
+            "completed" => LocalVideoTaskStatus::Completed,
+            "failed" => LocalVideoTaskStatus::Failed,
+            "cancelled" => LocalVideoTaskStatus::Cancelled,
+            "expired" => LocalVideoTaskStatus::Expired,
+            _ => LocalVideoTaskStatus::Submitted,
+        };
+        self.progress_percent = provider_body
+            .get("progress")
+            .and_then(Value::as_u64)
+            .and_then(|value| u16::try_from(value).ok())
+            .unwrap_or(match self.status {
+                LocalVideoTaskStatus::Completed => 100,
+                LocalVideoTaskStatus::Processing => 50,
+                _ => self.progress_percent,
+            });
+        self.completed_at_unix_secs = provider_body.get("completed_at").and_then(Value::as_u64);
+        self.expires_at_unix_secs = provider_body.get("expires_at").and_then(Value::as_u64);
+        let error = provider_body.get("error").and_then(Value::as_object);
+        self.error_code = error
+            .and_then(|value| value.get("code"))
+            .and_then(Value::as_str)
+            .map(str::to_string);
+        self.error_message = error
+            .and_then(|value| value.get("message"))
+            .and_then(Value::as_str)
+            .map(str::to_string);
+        self.video_url = provider_body
+            .get("video_url")
+            .or_else(|| provider_body.get("url"))
+            .or_else(|| provider_body.get("result_url"))
+            .and_then(Value::as_str)
+            .map(str::to_string);
+    }
+}

crates/aether-gateway/src/video_tasks/seed/snapshot.rs

@@ -0,0 +1,162 @@
+use super::*;
+
+impl LocalVideoTaskSnapshot {
+    pub(crate) fn to_upsert_record(&self) -> UpsertVideoTask {
+        match self {
+            Self::OpenAi(seed) => seed.to_upsert_record(),
+            Self::Gemini(seed) => seed.to_upsert_record(),
+        }
+    }
+
+    pub(crate) fn from_stored_task(task: &StoredVideoTask) -> Option<Self> {
+        task.request_metadata
+            .as_ref()
+            .and_then(|metadata| metadata.get("rust_local_snapshot"))
+            .cloned()
+            .and_then(|value| serde_json::from_value::<LocalVideoTaskSnapshot>(value).ok())
+    }
+
+    pub(crate) fn from_stored_task_with_transport(
+        task: &StoredVideoTask,
+        transport: &GatewayProviderTransportSnapshot,
+    ) -> Option<Self> {
+        let provider_api_format = task.provider_api_format.as_deref()?.trim();
+        let persistence = LocalVideoTaskPersistence::from_stored_task(task)?;
+        let transport = LocalVideoTaskTransport::from_provider_transport(
+            transport,
+            provider_api_format,
+            non_empty_owned(task.model.as_ref()),
+        )?;
+
+        match provider_api_format {
+            "openai:video" => {
+                let upstream_task_id = non_empty_owned(task.external_task_id.as_ref())?;
+                Some(Self::OpenAi(OpenAiVideoTaskSeed {
+                    local_task_id: task.id.clone(),
+                    upstream_task_id,
+                    created_at_unix_secs: task.created_at_unix_secs,
+                    user_id: task.user_id.clone(),
+                    api_key_id: task.api_key_id.clone(),
+                    model: non_empty_owned(task.model.as_ref()),
+                    prompt: non_empty_owned(task.prompt.as_ref()).or_else(|| {
+                        request_body_string(&persistence.original_request_body, "prompt")
+                    }),
+                    size: non_empty_owned(task.size.as_ref()).or_else(|| {
+                        request_body_string(&persistence.original_request_body, "size")
+                    }),
+                    seconds: task
+                        .duration_seconds
+                        .map(|value| value.to_string())
+                        .or_else(|| {
+                            request_body_string(&persistence.original_request_body, "seconds")
+                        }),
+                    remixed_from_video_id: request_body_string(
+                        &persistence.original_request_body,
+                        "remix_video_id",
+                    )
+                    .or_else(|| {
+                        request_body_string(
+                            &persistence.original_request_body,
+                            "remixed_from_video_id",
+                        )
+                    }),
+                    status: local_status_from_stored(task.status),
+                    progress_percent: task.progress_percent,
+                    completed_at_unix_secs: task.completed_at_unix_secs,
+                    expires_at_unix_secs: None,
+                    error_code: task.error_code.clone(),
+                    error_message: task.error_message.clone(),
+                    video_url: non_empty_owned(task.video_url.as_ref()),
+                    persistence,
+                    transport,
+                }))
+            }
+            "gemini:video" => {
+                let local_short_id =
+                    non_empty_owned(task.short_id.as_ref()).unwrap_or_else(|| task.id.clone());
+                let upstream_operation_name = non_empty_owned(task.external_task_id.as_ref())?;
+                let model = non_empty_owned(task.model.as_ref())?;
+                Some(Self::Gemini(GeminiVideoTaskSeed {
+                    local_short_id,
+                    upstream_operation_name,
+                    user_id: task.user_id.clone(),
+                    api_key_id: task.api_key_id.clone(),
+                    model,
+                    status: local_status_from_stored(task.status),
+                    progress_percent: task.progress_percent,
+                    error_code: task.error_code.clone(),
+                    error_message: task.error_message.clone(),
+                    metadata: Value::Object(Map::new()),
+                    persistence,
+                    transport,
+                }))
+            }
+            _ => None,
+        }
+    }
+
+    pub(crate) fn read_response(&self) -> LocalVideoTaskReadResponse {
+        match self {
+            Self::OpenAi(seed) => match seed.status {
+                LocalVideoTaskStatus::Cancelled => LocalVideoTaskReadResponse {
+                    status_code: 404,
+                    body_json: json!({"detail": "Video task was cancelled"}),
+                },
+                LocalVideoTaskStatus::Deleted => LocalVideoTaskReadResponse {
+                    status_code: 404,
+                    body_json: json!({"detail": "Video task not found"}),
+                },
+                _ => LocalVideoTaskReadResponse {
+                    status_code: 200,
+                    body_json: seed.client_body_json(),
+                },
+            },
+            Self::Gemini(seed) => match seed.status {
+                LocalVideoTaskStatus::Cancelled => LocalVideoTaskReadResponse {
+                    status_code: 404,
+                    body_json: json!({"detail": "Video task was cancelled"}),
+                },
+                LocalVideoTaskStatus::Deleted => LocalVideoTaskReadResponse {
+                    status_code: 404,
+                    body_json: json!({"detail": "Video task not found"}),
+                },
+                _ => LocalVideoTaskReadResponse {
+                    status_code: 200,
+                    body_json: seed.client_body_json(),
+                },
+            },
+        }
+    }
+
+    #[cfg(test)]
+    pub(crate) fn is_active_for_refresh(&self) -> bool {
+        match self {
+            Self::OpenAi(seed) => matches!(
+                seed.status,
+                LocalVideoTaskStatus::Submitted
+                    | LocalVideoTaskStatus::Queued
+                    | LocalVideoTaskStatus::Processing
+            ),
+            Self::Gemini(seed) => matches!(
+                seed.status,
+                LocalVideoTaskStatus::Submitted
+                    | LocalVideoTaskStatus::Queued
+                    | LocalVideoTaskStatus::Processing
+            ),
+        }
+    }
+
+    pub(crate) fn apply_provider_body(&mut self, provider_body: &Map<String, Value>) {
+        match self {
+            Self::OpenAi(seed) => seed.apply_provider_body(provider_body),
+            Self::Gemini(seed) => seed.apply_provider_body(provider_body),
+        }
+    }
+
+    pub(crate) fn provider_name(&self) -> Option<&str> {
+        match self {
+            Self::OpenAi(seed) => seed.transport.provider_name.as_deref(),
+            Self::Gemini(seed) => seed.transport.provider_name.as_deref(),
+        }
+    }
+}

crates/aether-gateway/src/video_tasks/seed/sync.rs

@@ -0,0 +1,194 @@
+use super::*;
+
+impl LocalVideoTaskSeed {
+    pub(crate) fn from_sync_finalize(
+        report_kind: &str,
+        provider_body: &Map<String, Value>,
+        report_context: &Map<String, Value>,
+        plan: &ExecutionPlan,
+    ) -> Option<Self> {
+        let transport = LocalVideoTaskTransport::from_plan(plan)?;
+        let persistence = LocalVideoTaskPersistence::from_report_context(report_context, plan);
+        match report_kind {
+            "openai_video_create_sync_finalize" => {
+                let upstream_id = provider_body.get("id").and_then(Value::as_str)?.trim();
+                if upstream_id.is_empty() {
+                    return None;
+                }
+
+                Some(Self::OpenAiCreate(OpenAiVideoTaskSeed {
+                    local_task_id: context_text(report_context, "local_task_id")
+                        .unwrap_or_else(|| Uuid::new_v4().to_string()),
+                    upstream_task_id: upstream_id.to_string(),
+                    created_at_unix_secs: context_u64(report_context, "local_created_at")
+                        .unwrap_or_else(current_unix_timestamp_secs),
+                    user_id: context_text(report_context, "user_id"),
+                    api_key_id: context_text(report_context, "api_key_id"),
+                    model: context_text(report_context, "model")
+                        .or_else(|| request_body_text(report_context, "model")),
+                    prompt: request_body_text(report_context, "prompt"),
+                    size: request_body_text(report_context, "size"),
+                    seconds: request_body_text(report_context, "seconds"),
+                    remixed_from_video_id: None,
+                    status: LocalVideoTaskStatus::Submitted,
+                    progress_percent: 0,
+                    completed_at_unix_secs: None,
+                    expires_at_unix_secs: None,
+                    error_code: None,
+                    error_message: None,
+                    video_url: None,
+                    persistence: persistence.clone(),
+                    transport: transport.clone(),
+                }))
+            }
+            "openai_video_remix_sync_finalize" => {
+                let upstream_id = provider_body.get("id").and_then(Value::as_str)?.trim();
+                if upstream_id.is_empty() {
+                    return None;
+                }
+
+                Some(Self::OpenAiRemix(OpenAiVideoTaskSeed {
+                    local_task_id: context_text(report_context, "local_task_id")
+                        .unwrap_or_else(|| Uuid::new_v4().to_string()),
+                    upstream_task_id: upstream_id.to_string(),
+                    created_at_unix_secs: context_u64(report_context, "local_created_at")
+                        .unwrap_or_else(current_unix_timestamp_secs),
+                    user_id: context_text(report_context, "user_id"),
+                    api_key_id: context_text(report_context, "api_key_id"),
+                    model: context_text(report_context, "model")
+                        .or_else(|| request_body_text(report_context, "model")),
+                    prompt: request_body_text(report_context, "prompt"),
+                    size: request_body_text(report_context, "size"),
+                    seconds: request_body_text(report_context, "seconds"),
+                    remixed_from_video_id: context_text(report_context, "task_id")
+                        .or_else(|| request_body_text(report_context, "remix_video_id")),
+                    status: LocalVideoTaskStatus::Submitted,
+                    progress_percent: 0,
+                    completed_at_unix_secs: None,
+                    expires_at_unix_secs: None,
+                    error_code: None,
+                    error_message: None,
+                    video_url: None,
+                    persistence: persistence.clone(),
+                    transport: transport.clone(),
+                }))
+            }
+            "gemini_video_create_sync_finalize" => {
+                let operation_name = provider_body
+                    .get("name")
+                    .or_else(|| provider_body.get("id"))
+                    .and_then(Value::as_str)
+                    .map(str::trim)
+                    .filter(|value| !value.is_empty());
+                operation_name?;
+
+                Some(Self::GeminiCreate(GeminiVideoTaskSeed {
+                    local_short_id: context_text(report_context, "local_short_id")
+                        .unwrap_or_else(generate_local_short_id),
+                    upstream_operation_name: operation_name?.to_string(),
+                    user_id: context_text(report_context, "user_id"),
+                    api_key_id: context_text(report_context, "api_key_id"),
+                    model: context_text(report_context, "model")
+                        .or_else(|| context_text(report_context, "model_name"))
+                        .unwrap_or_else(|| "unknown".to_string()),
+                    status: LocalVideoTaskStatus::Submitted,
+                    progress_percent: 0,
+                    error_code: None,
+                    error_message: None,
+                    metadata: json!({}),
+                    persistence,
+                    transport,
+                }))
+            }
+            _ => None,
+        }
+    }
+
+    pub(crate) fn success_report_kind(&self) -> &'static str {
+        match self {
+            Self::OpenAiCreate(_) => "openai_video_create_sync_success",
+            Self::OpenAiRemix(_) => "openai_video_remix_sync_success",
+            Self::GeminiCreate(_) => "gemini_video_create_sync_success",
+        }
+    }
+
+    pub(crate) fn apply_to_report_context(&self, report_context: &mut Map<String, Value>) {
+        match self {
+            Self::OpenAiCreate(seed) | Self::OpenAiRemix(seed) => {
+                report_context.insert(
+                    "local_task_id".to_string(),
+                    Value::String(seed.local_task_id.clone()),
+                );
+                report_context.insert(
+                    "local_created_at".to_string(),
+                    Value::Number(seed.created_at_unix_secs.into()),
+                );
+            }
+            Self::GeminiCreate(seed) => {
+                report_context.insert(
+                    "local_short_id".to_string(),
+                    Value::String(seed.local_short_id.clone()),
+                );
+            }
+        }
+    }
+
+    pub(crate) fn client_body_json(&self) -> Value {
+        match self {
+            Self::OpenAiCreate(seed) | Self::OpenAiRemix(seed) => seed.client_body_json(),
+            Self::GeminiCreate(seed) => seed.client_body_json(),
+        }
+    }
+}
+
+impl VideoTaskTruthSourceMode {
+    pub(crate) fn prepare_sync_success(
+        self,
+        report_kind: &str,
+        provider_body: &Map<String, Value>,
+        report_context: &Map<String, Value>,
+        plan: &ExecutionPlan,
+    ) -> Option<LocalVideoTaskSuccessPlan> {
+        let seed = LocalVideoTaskSeed::from_sync_finalize(
+            report_kind,
+            provider_body,
+            report_context,
+            plan,
+        )?;
+        let report_mode = match self {
+            Self::PythonSyncReport => VideoTaskSyncReportMode::InlineSync,
+            Self::RustAuthoritative => VideoTaskSyncReportMode::Background,
+        };
+        Some(LocalVideoTaskSuccessPlan { seed, report_mode })
+    }
+}
+
+impl LocalVideoTaskSuccessPlan {
+    pub(crate) fn success_report_kind(&self) -> &'static str {
+        self.seed.success_report_kind()
+    }
+
+    pub(crate) fn report_mode(&self) -> VideoTaskSyncReportMode {
+        self.report_mode
+    }
+
+    pub(crate) fn apply_to_report_context(&self, report_context: &mut Map<String, Value>) {
+        self.seed.apply_to_report_context(report_context);
+        if matches!(self.report_mode, VideoTaskSyncReportMode::Background) {
+            report_context.insert("rust_video_task_persisted".to_string(), Value::Bool(true));
+        }
+    }
+
+    pub(crate) fn client_body_json(&self) -> Value {
+        self.seed.client_body_json()
+    }
+
+    pub(crate) fn to_snapshot(&self) -> LocalVideoTaskSnapshot {
+        match &self.seed {
+            LocalVideoTaskSeed::OpenAiCreate(seed) | LocalVideoTaskSeed::OpenAiRemix(seed) => {
+                LocalVideoTaskSnapshot::OpenAi(seed.clone())
+            }
+            LocalVideoTaskSeed::GeminiCreate(seed) => LocalVideoTaskSnapshot::Gemini(seed.clone()),
+        }
+    }
+}

crates/aether-gateway/src/video_tasks/service.rs

@@ -0,0 +1,50 @@
+use super::*;
+
+mod follow_up;
+mod lifecycle;
+mod read;
+mod refresh;
+
+#[derive(Debug)]
+pub(crate) struct VideoTaskService {
+    truth_source_mode: VideoTaskTruthSourceMode,
+    store: Arc<dyn VideoTaskStore>,
+}
+
+impl VideoTaskService {
+    pub(crate) fn new(mode: VideoTaskTruthSourceMode) -> Self {
+        Self::with_store(mode, Arc::new(InMemoryVideoTaskStore::default()))
+    }
+
+    pub(crate) fn with_file_store(
+        mode: VideoTaskTruthSourceMode,
+        path: impl Into<PathBuf>,
+    ) -> std::io::Result<Self> {
+        Ok(Self::with_store(
+            mode,
+            Arc::new(FileVideoTaskStore::new(path)?),
+        ))
+    }
+
+    fn with_store(mode: VideoTaskTruthSourceMode, store: Arc<dyn VideoTaskStore>) -> Self {
+        Self {
+            truth_source_mode: mode,
+            store,
+        }
+    }
+
+    pub(crate) fn with_truth_source_mode(&self, mode: VideoTaskTruthSourceMode) -> Self {
+        Self {
+            truth_source_mode: mode,
+            store: self.store.clone(),
+        }
+    }
+
+    pub(crate) fn is_rust_authoritative(&self) -> bool {
+        self.truth_source_mode == VideoTaskTruthSourceMode::RustAuthoritative
+    }
+
+    pub(crate) fn truth_source_mode(&self) -> VideoTaskTruthSourceMode {
+        self.truth_source_mode
+    }
+}

crates/aether-gateway/src/video_tasks/service/follow_up.rs

@@ -0,0 +1,36 @@
+use super::*;
+
+impl VideoTaskService {
+    pub(crate) fn prepare_follow_up_sync_plan(
+        &self,
+        plan_kind: &str,
+        request_path: &str,
+        body_json: Option<&Value>,
+        auth_context: Option<&GatewayControlAuthContext>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskFollowUpPlan> {
+        match plan_kind {
+            "openai_video_remix_sync" => {
+                let task_id = extract_openai_task_id_from_remix_path(request_path)?;
+                let seed = self.store.clone_openai(task_id)?;
+                seed.build_remix_follow_up_plan(body_json?, auth_context, trace_id)
+            }
+            "openai_video_delete_sync" => {
+                let task_id = extract_openai_task_id_from_path(request_path)?;
+                let seed = self.store.clone_openai(task_id)?;
+                seed.build_delete_follow_up_plan(auth_context, trace_id)
+            }
+            "openai_video_cancel_sync" => {
+                let task_id = extract_openai_task_id_from_cancel_path(request_path)?;
+                let seed = self.store.clone_openai(task_id)?;
+                seed.build_cancel_follow_up_plan(auth_context, trace_id)
+            }
+            "gemini_video_cancel_sync" => {
+                let short_id = extract_gemini_short_id_from_cancel_path(request_path)?;
+                let seed = self.store.clone_gemini(short_id)?;
+                seed.build_cancel_follow_up_plan(auth_context, trace_id)
+            }
+            _ => None,
+        }
+    }
+}

crates/aether-gateway/src/video_tasks/service/lifecycle.rs

@@ -0,0 +1,41 @@
+use super::*;
+
+impl VideoTaskService {
+    pub(crate) fn prepare_sync_success(
+        &self,
+        report_kind: &str,
+        provider_body: &Map<String, Value>,
+        report_context: &Map<String, Value>,
+        plan: &ExecutionPlan,
+    ) -> Option<LocalVideoTaskSuccessPlan> {
+        self.truth_source_mode.prepare_sync_success(
+            report_kind,
+            provider_body,
+            report_context,
+            plan,
+        )
+    }
+
+    pub(crate) fn record_snapshot(&self, snapshot: LocalVideoTaskSnapshot) {
+        self.store.insert(snapshot);
+    }
+
+    pub(crate) fn hydrate_from_stored_task(&self, task: &StoredVideoTask) -> bool {
+        let Some(snapshot) = LocalVideoTaskSnapshot::from_stored_task(task) else {
+            return false;
+        };
+        self.store.insert(snapshot);
+        true
+    }
+
+    pub(crate) fn apply_finalize_mutation(&self, request_path: &str, report_kind: &str) {
+        let Some(mutation) = resolve_local_video_registry_mutation(
+            self.truth_source_mode,
+            request_path,
+            report_kind,
+        ) else {
+            return;
+        };
+        self.store.apply_mutation(mutation);
+    }
+}

crates/aether-gateway/src/video_tasks/service/read.rs

@@ -0,0 +1,50 @@
+use super::*;
+
+impl VideoTaskService {
+    pub(crate) fn read_response(
+        &self,
+        route_family: Option<&str>,
+        request_path: &str,
+    ) -> Option<LocalVideoTaskReadResponse> {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+            return None;
+        }
+        match route_family {
+            Some("openai") => extract_openai_task_id_from_path(request_path)
+                .and_then(|task_id| self.store.read_openai(task_id)),
+            Some("gemini") => extract_gemini_short_id_from_path(request_path)
+                .and_then(|short_id| self.store.read_gemini(short_id)),
+            _ => None,
+        }
+    }
+
+    pub(crate) fn snapshot_for_route(
+        &self,
+        route_family: Option<&str>,
+        request_path: &str,
+    ) -> Option<LocalVideoTaskSnapshot> {
+        match route_family {
+            Some("openai") => extract_openai_task_id_from_path(request_path)
+                .and_then(|task_id| self.store.clone_openai(task_id))
+                .map(LocalVideoTaskSnapshot::OpenAi),
+            Some("gemini") => extract_gemini_short_id_from_path(request_path)
+                .and_then(|short_id| self.store.clone_gemini(short_id))
+                .map(LocalVideoTaskSnapshot::Gemini),
+            _ => None,
+        }
+    }
+
+    pub(crate) fn prepare_openai_content_stream_action(
+        &self,
+        request_path: &str,
+        query_string: Option<&str>,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskContentAction> {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+            return None;
+        }
+        let task_id = extract_openai_task_id_from_content_path(request_path)?;
+        let seed = self.store.clone_openai(task_id)?;
+        seed.build_content_stream_action(query_string, trace_id)
+    }
+}

crates/aether-gateway/src/video_tasks/service/refresh.rs

@@ -0,0 +1,150 @@
+use super::*;
+
+impl VideoTaskService {
+    pub(crate) fn snapshot_for_refresh_plan(
+        &self,
+        refresh_plan: &LocalVideoTaskReadRefreshPlan,
+    ) -> Option<LocalVideoTaskSnapshot> {
+        match &refresh_plan.projection_target {
+            LocalVideoTaskProjectionTarget::OpenAi { task_id } => self
+                .store
+                .clone_openai(task_id)
+                .map(LocalVideoTaskSnapshot::OpenAi),
+            LocalVideoTaskProjectionTarget::Gemini { short_id } => self
+                .store
+                .clone_gemini(short_id)
+                .map(LocalVideoTaskSnapshot::Gemini),
+        }
+    }
+
+    pub(crate) fn project_openai_task_response(
+        &self,
+        task_id: &str,
+        provider_body: &Map<String, Value>,
+    ) -> bool {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+            return false;
+        }
+        self.store.project_openai(task_id, provider_body)
+    }
+
+    pub(crate) fn project_gemini_task_response(
+        &self,
+        short_id: &str,
+        provider_body: &Map<String, Value>,
+    ) -> bool {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+            return false;
+        }
+        self.store.project_gemini(short_id, provider_body)
+    }
+
+    pub(crate) fn prepare_read_refresh_sync_plan(
+        &self,
+        route_family: Option<&str>,
+        request_path: &str,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskReadRefreshPlan> {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+            return None;
+        }
+        match route_family {
+            Some("openai") => {
+                let task_id = extract_openai_task_id_from_path(request_path)?;
+                let seed = self.store.clone_openai(task_id)?;
+                Some(LocalVideoTaskReadRefreshPlan {
+                    plan: seed.build_get_follow_up_plan(trace_id)?,
+                    projection_target: LocalVideoTaskProjectionTarget::OpenAi {
+                        task_id: task_id.to_string(),
+                    },
+                })
+            }
+            Some("gemini") => {
+                let short_id = extract_gemini_short_id_from_path(request_path)?;
+                let seed = self.store.clone_gemini(short_id)?;
+                Some(LocalVideoTaskReadRefreshPlan {
+                    plan: seed.build_get_follow_up_plan(trace_id)?,
+                    projection_target: LocalVideoTaskProjectionTarget::Gemini {
+                        short_id: short_id.to_string(),
+                    },
+                })
+            }
+            _ => None,
+        }
+    }
+
+    #[cfg(test)]
+    pub(crate) fn prepare_poll_refresh_batch(
+        &self,
+        limit: usize,
+        trace_prefix: &str,
+    ) -> Vec<LocalVideoTaskReadRefreshPlan> {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative || limit == 0 {
+            return Vec::new();
+        }
+
+        self.store
+            .list_active_snapshots(limit)
+            .into_iter()
+            .enumerate()
+            .filter_map(|(index, snapshot)| {
+                let trace_id = format!("{trace_prefix}-{index}");
+                match snapshot {
+                    LocalVideoTaskSnapshot::OpenAi(seed) => Some(LocalVideoTaskReadRefreshPlan {
+                        plan: seed.build_get_follow_up_plan(&trace_id)?,
+                        projection_target: LocalVideoTaskProjectionTarget::OpenAi {
+                            task_id: seed.local_task_id.clone(),
+                        },
+                    }),
+                    LocalVideoTaskSnapshot::Gemini(seed) => Some(LocalVideoTaskReadRefreshPlan {
+                        plan: seed.build_get_follow_up_plan(&trace_id)?,
+                        projection_target: LocalVideoTaskProjectionTarget::Gemini {
+                            short_id: seed.local_short_id.clone(),
+                        },
+                    }),
+                }
+            })
+            .collect()
+    }
+
+    pub(crate) fn prepare_poll_refresh_plan_for_stored_task(
+        &self,
+        task: &StoredVideoTask,
+        trace_id: &str,
+    ) -> Option<LocalVideoTaskReadRefreshPlan> {
+        if self.truth_source_mode != VideoTaskTruthSourceMode::RustAuthoritative {
+            return None;
+        }
+
+        let snapshot = LocalVideoTaskSnapshot::from_stored_task(task)?;
+        match snapshot {
+            LocalVideoTaskSnapshot::OpenAi(seed) => Some(LocalVideoTaskReadRefreshPlan {
+                plan: seed.build_get_follow_up_plan(trace_id)?,
+                projection_target: LocalVideoTaskProjectionTarget::OpenAi {
+                    task_id: seed.local_task_id.clone(),
+                },
+            }),
+            LocalVideoTaskSnapshot::Gemini(seed) => Some(LocalVideoTaskReadRefreshPlan {
+                plan: seed.build_get_follow_up_plan(trace_id)?,
+                projection_target: LocalVideoTaskProjectionTarget::Gemini {
+                    short_id: seed.local_short_id.clone(),
+                },
+            }),
+        }
+    }
+
+    pub(crate) fn apply_read_refresh_projection(
+        &self,
+        refresh_plan: &LocalVideoTaskReadRefreshPlan,
+        provider_body: &Map<String, Value>,
+    ) -> bool {
+        match &refresh_plan.projection_target {
+            LocalVideoTaskProjectionTarget::OpenAi { task_id } => {
+                self.project_openai_task_response(task_id, provider_body)
+            }
+            LocalVideoTaskProjectionTarget::Gemini { short_id } => {
+                self.project_gemini_task_response(short_id, provider_body)
+            }
+        }
+    }
+}

crates/aether-gateway/src/video_tasks/store.rs

@@ -0,0 +1,20 @@
+use super::*;
+
+mod backend;
+mod registry;
+
+pub(crate) use self::backend::{FileVideoTaskStore, InMemoryVideoTaskStore};
+use self::registry::VideoTaskRegistry;
+
+pub(super) trait VideoTaskStore: std::fmt::Debug + Send + Sync {
+    fn insert(&self, snapshot: LocalVideoTaskSnapshot);
+    fn read_openai(&self, task_id: &str) -> Option<LocalVideoTaskReadResponse>;
+    fn read_gemini(&self, short_id: &str) -> Option<LocalVideoTaskReadResponse>;
+    fn clone_openai(&self, task_id: &str) -> Option<OpenAiVideoTaskSeed>;
+    fn clone_gemini(&self, short_id: &str) -> Option<GeminiVideoTaskSeed>;
+    #[cfg(test)]
+    fn list_active_snapshots(&self, limit: usize) -> Vec<LocalVideoTaskSnapshot>;
+    fn apply_mutation(&self, mutation: LocalVideoTaskRegistryMutation);
+    fn project_openai(&self, task_id: &str, provider_body: &Map<String, Value>) -> bool;
+    fn project_gemini(&self, short_id: &str, provider_body: &Map<String, Value>) -> bool;
+}

crates/aether-gateway/src/video_tasks/store/backend.rs

@@ -0,0 +1,165 @@
+use super::*;
+
+#[derive(Debug, Default)]
+pub(crate) struct InMemoryVideoTaskStore {
+    registry: Mutex<VideoTaskRegistry>,
+}
+
+#[derive(Debug)]
+pub(crate) struct FileVideoTaskStore {
+    path: PathBuf,
+    registry: Mutex<VideoTaskRegistry>,
+}
+
+impl VideoTaskStore for InMemoryVideoTaskStore {
+    fn insert(&self, snapshot: LocalVideoTaskSnapshot) {
+        if let Ok(mut registry) = self.registry.lock() {
+            registry.insert(snapshot);
+        }
+    }
+
+    fn read_openai(&self, task_id: &str) -> Option<LocalVideoTaskReadResponse> {
+        let registry = self.registry.lock().ok()?;
+        registry.read_openai(task_id)
+    }
+
+    fn read_gemini(&self, short_id: &str) -> Option<LocalVideoTaskReadResponse> {
+        let registry = self.registry.lock().ok()?;
+        registry.read_gemini(short_id)
+    }
+
+    fn clone_openai(&self, task_id: &str) -> Option<OpenAiVideoTaskSeed> {
+        let registry = self.registry.lock().ok()?;
+        registry.clone_openai(task_id)
+    }
+
+    fn clone_gemini(&self, short_id: &str) -> Option<GeminiVideoTaskSeed> {
+        let registry = self.registry.lock().ok()?;
+        registry.clone_gemini(short_id)
+    }
+
+    #[cfg(test)]
+    fn list_active_snapshots(&self, limit: usize) -> Vec<LocalVideoTaskSnapshot> {
+        let Ok(registry) = self.registry.lock() else {
+            return Vec::new();
+        };
+        registry.list_active_snapshots(limit)
+    }
+
+    fn apply_mutation(&self, mutation: LocalVideoTaskRegistryMutation) {
+        if let Ok(mut registry) = self.registry.lock() {
+            registry.apply_mutation(mutation);
+        }
+    }
+
+    fn project_openai(&self, task_id: &str, provider_body: &Map<String, Value>) -> bool {
+        let Ok(mut registry) = self.registry.lock() else {
+            return false;
+        };
+        registry.project_openai(task_id, provider_body)
+    }
+
+    fn project_gemini(&self, short_id: &str, provider_body: &Map<String, Value>) -> bool {
+        let Ok(mut registry) = self.registry.lock() else {
+            return false;
+        };
+        registry.project_gemini(short_id, provider_body)
+    }
+}
+
+impl FileVideoTaskStore {
+    pub(crate) fn new(path: impl Into<PathBuf>) -> std::io::Result<Self> {
+        let path = path.into();
+        let registry = Self::load_registry(&path)?;
+        Ok(Self {
+            path,
+            registry: Mutex::new(registry),
+        })
+    }
+
+    fn load_registry(path: &Path) -> std::io::Result<VideoTaskRegistry> {
+        if !path.exists() {
+            return Ok(VideoTaskRegistry::default());
+        }
+        let bytes = std::fs::read(path)?;
+        if bytes.is_empty() {
+            return Ok(VideoTaskRegistry::default());
+        }
+        serde_json::from_slice(&bytes)
+            .map_err(|err| std::io::Error::new(std::io::ErrorKind::InvalidData, err))
+    }
+
+    fn persist_registry(&self, registry: &VideoTaskRegistry) -> std::io::Result<()> {
+        if let Some(parent) = self.path.parent() {
+            std::fs::create_dir_all(parent)?;
+        }
+        let bytes = serde_json::to_vec_pretty(registry)
+            .map_err(|err| std::io::Error::new(std::io::ErrorKind::InvalidData, err))?;
+        let temp_path = self.path.with_extension("tmp");
+        std::fs::write(&temp_path, bytes)?;
+        std::fs::rename(temp_path, &self.path)?;
+        Ok(())
+    }
+
+    fn mutate_registry(&self, mutator: impl FnOnce(&mut VideoTaskRegistry) -> bool) -> bool {
+        let Ok(mut registry) = self.registry.lock() else {
+            return false;
+        };
+        if !mutator(&mut registry) {
+            return false;
+        }
+        self.persist_registry(&registry).is_ok()
+    }
+}
+
+impl VideoTaskStore for FileVideoTaskStore {
+    fn insert(&self, snapshot: LocalVideoTaskSnapshot) {
+        let _ = self.mutate_registry(|registry| {
+            registry.insert(snapshot);
+            true
+        });
+    }
+
+    fn read_openai(&self, task_id: &str) -> Option<LocalVideoTaskReadResponse> {
+        let registry = self.registry.lock().ok()?;
+        registry.read_openai(task_id)
+    }
+
+    fn read_gemini(&self, short_id: &str) -> Option<LocalVideoTaskReadResponse> {
+        let registry = self.registry.lock().ok()?;
+        registry.read_gemini(short_id)
+    }
+
+    fn clone_openai(&self, task_id: &str) -> Option<OpenAiVideoTaskSeed> {
+        let registry = self.registry.lock().ok()?;
+        registry.clone_openai(task_id)
+    }
+
+    fn clone_gemini(&self, short_id: &str) -> Option<GeminiVideoTaskSeed> {
+        let registry = self.registry.lock().ok()?;
+        registry.clone_gemini(short_id)
+    }
+
+    #[cfg(test)]
+    fn list_active_snapshots(&self, limit: usize) -> Vec<LocalVideoTaskSnapshot> {
+        let Ok(registry) = self.registry.lock() else {
+            return Vec::new();
+        };
+        registry.list_active_snapshots(limit)
+    }
+
+    fn apply_mutation(&self, mutation: LocalVideoTaskRegistryMutation) {
+        let _ = self.mutate_registry(|registry| {
+            registry.apply_mutation(mutation);
+            true
+        });
+    }
+
+    fn project_openai(&self, task_id: &str, provider_body: &Map<String, Value>) -> bool {
+        self.mutate_registry(|registry| registry.project_openai(task_id, provider_body))
+    }
+
+    fn project_gemini(&self, short_id: &str, provider_body: &Map<String, Value>) -> bool {
+        self.mutate_registry(|registry| registry.project_gemini(short_id, provider_body))
+    }
+}

crates/aether-gateway/src/video_tasks/store/registry.rs

@@ -0,0 +1,103 @@
+use super::*;
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+pub(super) struct VideoTaskRegistry {
+    openai: BTreeMap<String, LocalVideoTaskSnapshot>,
+    gemini: BTreeMap<String, LocalVideoTaskSnapshot>,
+}
+
+impl VideoTaskRegistry {
+    pub(super) fn insert(&mut self, snapshot: LocalVideoTaskSnapshot) {
+        match &snapshot {
+            LocalVideoTaskSnapshot::OpenAi(seed) => {
+                self.openai.insert(seed.local_task_id.clone(), snapshot);
+            }
+            LocalVideoTaskSnapshot::Gemini(seed) => {
+                self.gemini.insert(seed.local_short_id.clone(), snapshot);
+            }
+        }
+    }
+
+    pub(super) fn read_openai(&self, task_id: &str) -> Option<LocalVideoTaskReadResponse> {
+        self.openai
+            .get(task_id)
+            .map(LocalVideoTaskSnapshot::read_response)
+    }
+
+    pub(super) fn read_gemini(&self, short_id: &str) -> Option<LocalVideoTaskReadResponse> {
+        self.gemini
+            .get(short_id)
+            .map(LocalVideoTaskSnapshot::read_response)
+    }
+
+    pub(super) fn clone_openai(&self, task_id: &str) -> Option<OpenAiVideoTaskSeed> {
+        let LocalVideoTaskSnapshot::OpenAi(seed) = self.openai.get(task_id)?.clone() else {
+            return None;
+        };
+        Some(seed)
+    }
+
+    pub(super) fn clone_gemini(&self, short_id: &str) -> Option<GeminiVideoTaskSeed> {
+        let LocalVideoTaskSnapshot::Gemini(seed) = self.gemini.get(short_id)?.clone() else {
+            return None;
+        };
+        Some(seed)
+    }
+
+    #[cfg(test)]
+    pub(super) fn list_active_snapshots(&self, limit: usize) -> Vec<LocalVideoTaskSnapshot> {
+        self.openai
+            .values()
+            .chain(self.gemini.values())
+            .filter(|snapshot| snapshot.is_active_for_refresh())
+            .take(limit)
+            .cloned()
+            .collect()
+    }
+
+    pub(super) fn apply_mutation(&mut self, mutation: LocalVideoTaskRegistryMutation) {
+        match mutation {
+            LocalVideoTaskRegistryMutation::OpenAiCancelled { task_id } => {
+                if let Some(LocalVideoTaskSnapshot::OpenAi(seed)) = self.openai.get_mut(&task_id) {
+                    seed.status = LocalVideoTaskStatus::Cancelled;
+                }
+            }
+            LocalVideoTaskRegistryMutation::OpenAiDeleted { task_id } => {
+                if let Some(LocalVideoTaskSnapshot::OpenAi(seed)) = self.openai.get_mut(&task_id) {
+                    seed.status = LocalVideoTaskStatus::Deleted;
+                }
+            }
+            LocalVideoTaskRegistryMutation::GeminiCancelled { short_id } => {
+                if let Some(LocalVideoTaskSnapshot::Gemini(seed)) = self.gemini.get_mut(&short_id) {
+                    seed.status = LocalVideoTaskStatus::Cancelled;
+                }
+            }
+        }
+    }
+
+    #[allow(dead_code)]
+    pub(super) fn project_openai(
+        &mut self,
+        task_id: &str,
+        provider_body: &Map<String, Value>,
+    ) -> bool {
+        let Some(LocalVideoTaskSnapshot::OpenAi(seed)) = self.openai.get_mut(task_id) else {
+            return false;
+        };
+        seed.apply_provider_body(provider_body);
+        true
+    }
+
+    #[allow(dead_code)]
+    pub(super) fn project_gemini(
+        &mut self,
+        short_id: &str,
+        provider_body: &Map<String, Value>,
+    ) -> bool {
+        let Some(LocalVideoTaskSnapshot::Gemini(seed)) = self.gemini.get_mut(short_id) else {
+            return false;
+        };
+        seed.apply_provider_body(provider_body);
+        true
+    }
+}

crates/aether-gateway/src/video_tasks/tests.rs

@@ -0,0 +1,6 @@
+use super::*;
+
+mod fixtures;
+mod plans;
+mod projection;
+mod sync;

crates/aether-gateway/src/video_tasks/tests/fixtures.rs

@@ -0,0 +1,102 @@
+use super::*;
+
+pub(super) fn sample_transport(
+    base_url: &str,
+    provider_api_format: &str,
+) -> LocalVideoTaskTransport {
+    let url = match provider_api_format {
+        "openai:video" => format!("{base_url}/v1/videos"),
+        "gemini:video" => {
+            format!("{base_url}/v1beta/models/veo-3:predictLongRunning")
+        }
+        _ => panic!("unsupported provider api format"),
+    };
+    LocalVideoTaskTransport::from_plan(&sample_plan(&url, provider_api_format))
+        .expect("transport should build")
+}
+
+pub(super) fn sample_persistence(provider_api_format: &str) -> LocalVideoTaskPersistence {
+    LocalVideoTaskPersistence {
+        request_id: "request-123".to_string(),
+        username: Some("user".to_string()),
+        api_key_name: Some("primary".to_string()),
+        client_api_format: provider_api_format.to_string(),
+        provider_api_format: provider_api_format.to_string(),
+        original_request_body: json!({
+            "prompt": "hello",
+            "seconds": 4,
+            "resolution": "720p",
+            "aspect_ratio": "16:9",
+            "size": "1280x720"
+        }),
+        format_converted: false,
+    }
+}
+
+pub(super) fn sample_auth_context() -> GatewayControlAuthContext {
+    GatewayControlAuthContext {
+        user_id: "user-123".to_string(),
+        api_key_id: "key-123".to_string(),
+        balance_remaining: None,
+        access_allowed: true,
+        user_rate_limit: None,
+        api_key_rate_limit: None,
+        api_key_is_standalone: false,
+        local_rejection: None,
+        allowed_models: None,
+    }
+}
+
+pub(super) fn sample_plan(url: &str, provider_api_format: &str) -> ExecutionPlan {
+    ExecutionPlan {
+        request_id: "req-123".to_string(),
+        candidate_id: None,
+        provider_name: Some(
+            provider_api_format
+                .split(':')
+                .next()
+                .expect("provider name should exist")
+                .to_string(),
+        ),
+        provider_id: "provider-123".to_string(),
+        endpoint_id: "endpoint-123".to_string(),
+        key_id: "key-123".to_string(),
+        method: "POST".to_string(),
+        url: url.to_string(),
+        headers: BTreeMap::from([(
+            "authorization".to_string(),
+            "Bearer upstream-key".to_string(),
+        )]),
+        content_type: Some("application/json".to_string()),
+        content_encoding: None,
+        body: RequestBody::from_json(json!({})),
+        stream: false,
+        client_api_format: provider_api_format.to_string(),
+        provider_api_format: provider_api_format.to_string(),
+        model_name: Some(
+            if provider_api_format == "gemini:video" {
+                "veo-3"
+            } else {
+                "sora-2"
+            }
+            .to_string(),
+        ),
+        proxy: Some(ProxySnapshot {
+            enabled: Some(false),
+            mode: Some("direct".to_string()),
+            node_id: None,
+            label: None,
+            url: None,
+            extra: None,
+        }),
+        tls_profile: Some("chrome".to_string()),
+        timeouts: Some(ExecutionTimeouts {
+            connect_ms: Some(10_000),
+            read_ms: Some(30_000),
+            first_byte_ms: None,
+            write_ms: Some(30_000),
+            pool_ms: Some(10_000),
+            total_ms: Some(300_000),
+        }),
+    }
+}

crates/aether-gateway/src/video_tasks/tests/plans.rs

@@ -0,0 +1,403 @@
+use super::fixtures::*;
+use super::*;
+
+#[test]
+fn rust_authoritative_service_builds_openai_cancel_follow_up_plan() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let follow_up = service
+        .prepare_follow_up_sync_plan(
+            "openai_video_cancel_sync",
+            "/v1/videos/task-local-123/cancel",
+            None,
+            Some(&sample_auth_context()),
+            "trace-openai-cancel-123",
+        )
+        .expect("follow-up plan should build");
+
+    assert_eq!(follow_up.plan.method, "DELETE");
+    assert_eq!(
+        follow_up.plan.url,
+        "https://api.openai.example/v1/videos/ext-video-task-123"
+    );
+    assert_eq!(follow_up.plan.provider_api_format, "openai:video");
+    assert!(follow_up.plan.body.json_body.is_none());
+    assert_eq!(
+        follow_up.report_kind.as_deref(),
+        Some("openai_video_cancel_sync_finalize")
+    );
+    assert_eq!(
+        follow_up
+            .report_context
+            .as_ref()
+            .and_then(Value::as_object)
+            .and_then(|value| value.get("task_id"))
+            .and_then(Value::as_str),
+        Some("task-local-123")
+    );
+}
+
+#[test]
+fn rust_authoritative_service_builds_openai_remix_follow_up_plan() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Completed,
+        progress_percent: 100,
+        completed_at_unix_secs: Some(1712345688),
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: Some("https://cdn.example.com/original.mp4".to_string()),
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let remix_body = json!({
+        "prompt": "remix this",
+        "model": "sora-2",
+    });
+    let follow_up = service
+        .prepare_follow_up_sync_plan(
+            "openai_video_remix_sync",
+            "/v1/videos/task-local-123/remix",
+            Some(&remix_body),
+            Some(&sample_auth_context()),
+            "trace-openai-remix-123",
+        )
+        .expect("follow-up plan should build");
+
+    assert_eq!(follow_up.plan.method, "POST");
+    assert_eq!(
+        follow_up.plan.url,
+        "https://api.openai.example/v1/videos/ext-video-task-123/remix"
+    );
+    assert_eq!(follow_up.plan.provider_api_format, "openai:video");
+    assert_eq!(follow_up.plan.body.json_body, Some(remix_body.clone()));
+    assert_eq!(
+        follow_up.report_kind.as_deref(),
+        Some("openai_video_remix_sync_finalize")
+    );
+    assert_eq!(
+        follow_up
+            .report_context
+            .as_ref()
+            .and_then(Value::as_object)
+            .and_then(|value| value.get("task_id"))
+            .and_then(Value::as_str),
+        Some("task-local-123")
+    );
+}
+
+#[test]
+fn rust_authoritative_service_builds_openai_delete_follow_up_plan() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Completed,
+        progress_percent: 100,
+        completed_at_unix_secs: Some(1712345688),
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let follow_up = service
+        .prepare_follow_up_sync_plan(
+            "openai_video_delete_sync",
+            "/v1/videos/task-local-123",
+            None,
+            Some(&sample_auth_context()),
+            "trace-openai-delete-123",
+        )
+        .expect("follow-up plan should build");
+
+    assert_eq!(follow_up.plan.method, "DELETE");
+    assert_eq!(
+        follow_up.plan.url,
+        "https://api.openai.example/v1/videos/ext-video-task-123"
+    );
+    assert_eq!(follow_up.plan.provider_api_format, "openai:video");
+    assert!(follow_up.plan.body.json_body.is_none());
+    assert_eq!(
+        follow_up.report_kind.as_deref(),
+        Some("openai_video_delete_sync_finalize")
+    );
+    assert_eq!(
+        follow_up
+            .report_context
+            .as_ref()
+            .and_then(Value::as_object)
+            .and_then(|value| value.get("task_id"))
+            .and_then(Value::as_str),
+        Some("task-local-123")
+    );
+}
+
+#[test]
+fn rust_authoritative_service_builds_gemini_cancel_follow_up_plan() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::Gemini(GeminiVideoTaskSeed {
+        local_short_id: "localshort123".to_string(),
+        upstream_operation_name: "operations/ext-video-123".to_string(),
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: "veo-3".to_string(),
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        error_code: None,
+        error_message: None,
+        metadata: json!({}),
+        persistence: sample_persistence("gemini:video"),
+        transport: sample_transport("https://generativelanguage.googleapis.com", "gemini:video"),
+    }));
+
+    let follow_up = service
+        .prepare_follow_up_sync_plan(
+            "gemini_video_cancel_sync",
+            "/v1beta/models/veo-3/operations/localshort123:cancel",
+            None,
+            Some(&sample_auth_context()),
+            "trace-gemini-cancel-123",
+        )
+        .expect("follow-up plan should build");
+
+    assert_eq!(follow_up.plan.method, "POST");
+    assert_eq!(
+            follow_up.plan.url,
+            "https://generativelanguage.googleapis.com/v1beta/models/veo-3/operations/ext-video-123:cancel"
+        );
+    assert_eq!(follow_up.plan.provider_api_format, "gemini:video");
+    assert_eq!(follow_up.plan.body.json_body, Some(json!({})));
+    assert_eq!(
+        follow_up.report_kind.as_deref(),
+        Some("gemini_video_cancel_sync_finalize")
+    );
+    assert_eq!(
+        follow_up
+            .report_context
+            .as_ref()
+            .and_then(Value::as_object)
+            .and_then(|value| value.get("task_id"))
+            .and_then(Value::as_str),
+        Some("localshort123")
+    );
+}
+
+#[test]
+fn rust_authoritative_service_builds_openai_read_refresh_plan() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let refresh = service
+        .prepare_read_refresh_sync_plan(
+            Some("openai"),
+            "/v1/videos/task-local-123",
+            "trace-openai-read-123",
+        )
+        .expect("read refresh plan should build");
+
+    assert_eq!(refresh.plan.method, "GET");
+    assert_eq!(
+        refresh.plan.url,
+        "https://api.openai.example/v1/videos/ext-video-task-123"
+    );
+    assert!(refresh.plan.body.json_body.is_none());
+}
+
+#[test]
+fn rust_authoritative_service_builds_gemini_read_refresh_plan() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::Gemini(GeminiVideoTaskSeed {
+        local_short_id: "localshort123".to_string(),
+        upstream_operation_name: "operations/ext-video-123".to_string(),
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: "veo-3".to_string(),
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        error_code: None,
+        error_message: None,
+        metadata: json!({}),
+        persistence: sample_persistence("gemini:video"),
+        transport: sample_transport("https://generativelanguage.googleapis.com", "gemini:video"),
+    }));
+
+    let refresh = service
+        .prepare_read_refresh_sync_plan(
+            Some("gemini"),
+            "/v1beta/models/veo-3/operations/localshort123",
+            "trace-gemini-read-123",
+        )
+        .expect("read refresh plan should build");
+
+    assert_eq!(refresh.plan.method, "GET");
+    assert_eq!(
+        refresh.plan.url,
+        "https://generativelanguage.googleapis.com/v1beta/models/veo-3/operations/ext-video-123"
+    );
+    assert!(refresh.plan.body.json_body.is_none());
+}
+
+#[test]
+fn rust_authoritative_service_builds_poll_refresh_batch_for_active_tasks_only() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-active-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Processing,
+        progress_percent: 42,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-completed-123".to_string(),
+        upstream_task_id: "ext-video-task-999".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Completed,
+        progress_percent: 100,
+        completed_at_unix_secs: Some(1712345688),
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: Some("https://cdn.example.com/ext-video-task-999.mp4".to_string()),
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let batch = service.prepare_poll_refresh_batch(10, "trace-poller");
+
+    assert_eq!(batch.len(), 1);
+    assert_eq!(batch[0].plan.method, "GET");
+    assert_eq!(
+        batch[0].plan.url,
+        "https://api.openai.example/v1/videos/ext-video-task-123"
+    );
+}
+
+#[test]
+fn file_video_task_store_persists_snapshots_across_service_rebuilds() {
+    let store_path =
+        std::env::temp_dir().join(format!("aether-video-task-store-{}.json", Uuid::new_v4()));
+    let service =
+        VideoTaskService::with_file_store(VideoTaskTruthSourceMode::RustAuthoritative, &store_path)
+            .expect("file-backed service should build");
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-file-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: Some("hello".to_string()),
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+    drop(service);
+
+    let reopened =
+        VideoTaskService::with_file_store(VideoTaskTruthSourceMode::RustAuthoritative, &store_path)
+            .expect("reopened file-backed service should build");
+    let response = reopened
+        .read_response(Some("openai"), "/v1/videos/task-file-123")
+        .expect("persisted read response should exist");
+    assert_eq!(response.status_code, 200);
+    assert_eq!(
+        response.body_json.get("id").and_then(Value::as_str),
+        Some("task-file-123")
+    );
+
+    let _ = std::fs::remove_file(store_path);
+}

crates/aether-gateway/src/video_tasks/tests/projection.rs

@@ -0,0 +1,246 @@
+use super::fixtures::*;
+use super::*;
+
+#[test]
+fn rust_authoritative_service_projects_openai_status_into_local_read_response() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: Some("hello".to_string()),
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    assert!(service.project_openai_task_response(
+        "task-local-123",
+        json!({
+            "status": "processing",
+            "progress": 42
+        })
+        .as_object()
+        .expect("provider body should be object"),
+    ));
+    let processing = service
+        .read_response(Some("openai"), "/v1/videos/task-local-123")
+        .expect("processing read response should exist");
+    assert_eq!(processing.status_code, 200);
+    assert_eq!(
+        processing.body_json.get("status"),
+        Some(&json!("processing"))
+    );
+    assert_eq!(processing.body_json.get("progress"), Some(&json!(42)));
+
+    assert!(service.project_openai_task_response(
+        "task-local-123",
+        json!({
+            "status": "failed",
+            "progress": 100,
+            "completed_at": 1712345688u64,
+            "error": {
+                "code": "upstream_failed",
+                "message": "provider failed"
+            }
+        })
+        .as_object()
+        .expect("provider body should be object"),
+    ));
+    let failed = service
+        .read_response(Some("openai"), "/v1/videos/task-local-123")
+        .expect("failed read response should exist");
+    assert_eq!(failed.status_code, 200);
+    assert_eq!(failed.body_json.get("status"), Some(&json!("failed")));
+    assert_eq!(
+        failed.body_json.get("completed_at"),
+        Some(&json!(1712345688u64))
+    );
+    assert_eq!(
+        failed
+            .body_json
+            .get("error")
+            .and_then(Value::as_object)
+            .and_then(|value| value.get("code")),
+        Some(&json!("upstream_failed"))
+    );
+}
+
+#[test]
+fn rust_authoritative_service_builds_openai_content_stream_plan_from_direct_video_url() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Completed,
+        progress_percent: 100,
+        completed_at_unix_secs: Some(1712345688),
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: Some("https://cdn.example.com/ext-video-task-123.mp4".to_string()),
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let action = service
+        .prepare_openai_content_stream_action(
+            "/v1/videos/task-local-123/content",
+            Some("variant=video"),
+            "trace-openai-content-123",
+        )
+        .expect("content action should exist");
+
+    let LocalVideoTaskContentAction::StreamPlan(plan) = action else {
+        panic!("content action should be stream plan");
+    };
+    assert_eq!(plan.method, "GET");
+    assert_eq!(plan.url, "https://cdn.example.com/ext-video-task-123.mp4");
+    assert!(plan.headers.is_empty());
+}
+
+#[test]
+fn rust_authoritative_service_returns_processing_content_response_for_pending_openai_task() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Processing,
+        progress_percent: 42,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+
+    let action = service
+        .prepare_openai_content_stream_action(
+            "/v1/videos/task-local-123/content",
+            Some("variant=video"),
+            "trace-openai-content-processing-123",
+        )
+        .expect("content action should exist");
+
+    let LocalVideoTaskContentAction::Immediate {
+        status_code,
+        body_json,
+    } = action
+    else {
+        panic!("content action should be immediate response");
+    };
+    assert_eq!(status_code, 202);
+    assert_eq!(
+        body_json,
+        json!({"detail": "Video is still processing (status: processing)"})
+    );
+}
+
+#[test]
+fn rust_authoritative_service_projects_gemini_status_into_local_read_response() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::Gemini(GeminiVideoTaskSeed {
+        local_short_id: "localshort123".to_string(),
+        upstream_operation_name: "operations/ext-video-123".to_string(),
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: "veo-3".to_string(),
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        error_code: None,
+        error_message: None,
+        metadata: json!({}),
+        persistence: sample_persistence("gemini:video"),
+        transport: sample_transport("https://generativelanguage.googleapis.com", "gemini:video"),
+    }));
+
+    assert!(service.project_gemini_task_response(
+        "localshort123",
+        json!({
+            "done": false,
+            "metadata": {
+                "state": "PROCESSING"
+            }
+        })
+        .as_object()
+        .expect("provider body should be object"),
+    ));
+    let processing = service
+        .read_response(
+            Some("gemini"),
+            "/v1beta/models/veo-3/operations/localshort123",
+        )
+        .expect("processing read response should exist");
+    assert_eq!(processing.status_code, 200);
+    assert_eq!(processing.body_json.get("done"), Some(&json!(false)));
+    assert_eq!(
+        processing.body_json.get("metadata"),
+        Some(&json!({"state": "PROCESSING"}))
+    );
+
+    assert!(service.project_gemini_task_response(
+        "localshort123",
+        json!({
+            "done": true,
+            "response": {
+                "generateVideoResponse": {
+                    "generatedSamples": [
+                        {"video": {"uri": "https://example.invalid/video.mp4"}}
+                    ]
+                }
+            }
+        })
+        .as_object()
+        .expect("provider body should be object"),
+    ));
+    let completed = service
+        .read_response(
+            Some("gemini"),
+            "/v1beta/models/veo-3/operations/localshort123",
+        )
+        .expect("completed read response should exist");
+    assert_eq!(completed.status_code, 200);
+    assert_eq!(completed.body_json.get("done"), Some(&json!(true)));
+    assert_eq!(
+        completed
+            .body_json
+            .get("response")
+            .and_then(|value| value.get("generateVideoResponse"))
+            .and_then(|value| value.get("generatedSamples"))
+            .and_then(Value::as_array)
+            .and_then(|value| value.first())
+            .and_then(|value| value.get("video"))
+            .and_then(|value| value.get("uri")),
+        Some(&json!("/v1beta/files/aev_localshort123:download?alt=media"))
+    );
+}

crates/aether-gateway/src/video_tasks/tests/sync.rs

@@ -0,0 +1,369 @@
+use super::fixtures::*;
+use super::*;
+
+#[test]
+fn openai_video_seed_preserves_existing_local_identity() {
+    let provider_body = json!({"id": "ext-video-task-123"});
+    let report_context = json!({
+        "local_task_id": "task-local-123",
+        "local_created_at": 1712345678u64,
+        "model": "sora-2",
+        "original_request_body": {
+            "prompt": "hello",
+            "size": "1024x1024",
+            "seconds": "8"
+        }
+    });
+
+    let seed = LocalVideoTaskSeed::from_sync_finalize(
+        "openai_video_create_sync_finalize",
+        provider_body
+            .as_object()
+            .expect("provider body should be object"),
+        report_context
+            .as_object()
+            .expect("report context should be object"),
+        &sample_plan("https://api.openai.example/v1/videos", "openai:video"),
+    )
+    .expect("seed should build");
+
+    let mut patched_context = report_context
+        .as_object()
+        .expect("report context should be object")
+        .clone();
+    seed.apply_to_report_context(&mut patched_context);
+    let client_body = seed.client_body_json();
+
+    assert_eq!(
+        seed.success_report_kind(),
+        "openai_video_create_sync_success"
+    );
+    assert_eq!(
+        patched_context.get("local_task_id").and_then(Value::as_str),
+        Some("task-local-123")
+    );
+    assert_eq!(
+        patched_context
+            .get("local_created_at")
+            .and_then(Value::as_u64),
+        Some(1712345678)
+    );
+    assert_eq!(
+        client_body.get("id").and_then(Value::as_str),
+        Some("task-local-123")
+    );
+    assert_eq!(
+        client_body.get("created_at").and_then(Value::as_u64),
+        Some(1712345678)
+    );
+    assert_eq!(
+        client_body.get("model").and_then(Value::as_str),
+        Some("sora-2")
+    );
+    assert_eq!(
+        client_body.get("prompt").and_then(Value::as_str),
+        Some("hello")
+    );
+}
+
+#[test]
+fn openai_video_remix_seed_carries_source_task() {
+    let provider_body = json!({"id": "ext-remix-task-123"});
+    let report_context = json!({
+        "task_id": "task-source-123",
+        "original_request_body": {
+            "prompt": "remix it"
+        }
+    });
+
+    let seed = LocalVideoTaskSeed::from_sync_finalize(
+        "openai_video_remix_sync_finalize",
+        provider_body
+            .as_object()
+            .expect("provider body should be object"),
+        report_context
+            .as_object()
+            .expect("report context should be object"),
+        &sample_plan(
+            "https://api.openai.example/v1/videos/ext-source/remix",
+            "openai:video",
+        ),
+    )
+    .expect("seed should build");
+    let client_body = seed.client_body_json();
+
+    assert_eq!(
+        seed.success_report_kind(),
+        "openai_video_remix_sync_success"
+    );
+    assert_eq!(
+        client_body
+            .get("remixed_from_video_id")
+            .and_then(Value::as_str),
+        Some("task-source-123")
+    );
+}
+
+#[test]
+fn gemini_video_seed_generates_short_id_and_pending_operation_name() {
+    let provider_body = json!({"name": "operations/ext-video-task-123"});
+    let report_context = json!({
+        "model": "veo-3"
+    });
+
+    let seed = LocalVideoTaskSeed::from_sync_finalize(
+        "gemini_video_create_sync_finalize",
+        provider_body
+            .as_object()
+            .expect("provider body should be object"),
+        report_context
+            .as_object()
+            .expect("report context should be object"),
+        &sample_plan(
+            "https://generativelanguage.googleapis.com/v1beta/models/veo-3:predictLongRunning",
+            "gemini:video",
+        ),
+    )
+    .expect("seed should build");
+    let mut patched_context = Map::new();
+    seed.apply_to_report_context(&mut patched_context);
+    let client_body = seed.client_body_json();
+    let local_short_id = patched_context
+        .get("local_short_id")
+        .and_then(Value::as_str)
+        .expect("local_short_id should exist");
+
+    assert_eq!(
+        seed.success_report_kind(),
+        "gemini_video_create_sync_success"
+    );
+    assert_eq!(local_short_id.len(), 12);
+    assert_eq!(
+        client_body.get("name").and_then(Value::as_str),
+        Some(format!("models/veo-3/operations/{local_short_id}").as_str())
+    );
+    assert_eq!(
+        client_body.get("done").and_then(Value::as_bool),
+        Some(false)
+    );
+}
+
+#[test]
+fn python_backed_video_truth_source_requires_inline_sync_report() {
+    let provider_body = json!({"id": "ext-video-task-123"});
+    let report_context = json!({});
+
+    let plan = VideoTaskTruthSourceMode::PythonSyncReport
+        .prepare_sync_success(
+            "openai_video_create_sync_finalize",
+            provider_body
+                .as_object()
+                .expect("provider body should be object"),
+            report_context
+                .as_object()
+                .expect("report context should be object"),
+            &sample_plan("https://api.openai.example/v1/videos", "openai:video"),
+        )
+        .expect("plan should build");
+
+    assert_eq!(plan.report_mode(), VideoTaskSyncReportMode::InlineSync);
+    assert_eq!(
+        plan.success_report_kind(),
+        "openai_video_create_sync_success"
+    );
+}
+
+#[test]
+fn rust_authoritative_video_truth_source_can_background_success_report() {
+    let provider_body = json!({"name": "operations/ext-video-task-123"});
+    let report_context = json!({
+        "model": "veo-3"
+    });
+
+    let plan = VideoTaskTruthSourceMode::RustAuthoritative
+        .prepare_sync_success(
+            "gemini_video_create_sync_finalize",
+            provider_body
+                .as_object()
+                .expect("provider body should be object"),
+            report_context
+                .as_object()
+                .expect("report context should be object"),
+            &sample_plan(
+                "https://generativelanguage.googleapis.com/v1beta/models/veo-3:predictLongRunning",
+                "gemini:video",
+            ),
+        )
+        .expect("plan should build");
+
+    assert_eq!(plan.report_mode(), VideoTaskSyncReportMode::Background);
+    assert_eq!(
+        plan.success_report_kind(),
+        "gemini_video_create_sync_success"
+    );
+    let mut report_context = Map::new();
+    plan.apply_to_report_context(&mut report_context);
+    assert_eq!(
+        report_context.get("rust_video_task_persisted"),
+        Some(&Value::Bool(true))
+    );
+}
+
+#[test]
+fn rust_authoritative_service_reads_openai_task_from_local_registry() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    let snapshot = LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: Some("hello".to_string()),
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    });
+    service.record_snapshot(snapshot);
+
+    let response = service
+        .read_response(Some("openai"), "/v1/videos/task-local-123")
+        .expect("read response should exist");
+
+    assert_eq!(response.status_code, 200);
+    assert_eq!(
+        response.body_json.get("id").and_then(Value::as_str),
+        Some("task-local-123")
+    );
+    assert_eq!(
+        response.body_json.get("status").and_then(Value::as_str),
+        Some("queued")
+    );
+}
+
+#[test]
+fn rust_authoritative_service_applies_cancel_and_delete_mutations() {
+    let service = VideoTaskService::new(VideoTaskTruthSourceMode::RustAuthoritative);
+    service.record_snapshot(LocalVideoTaskSnapshot::OpenAi(OpenAiVideoTaskSeed {
+        local_task_id: "task-local-123".to_string(),
+        upstream_task_id: "ext-video-task-123".to_string(),
+        created_at_unix_secs: 1712345678,
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: Some("sora-2".to_string()),
+        prompt: None,
+        size: None,
+        seconds: None,
+        remixed_from_video_id: None,
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        completed_at_unix_secs: None,
+        expires_at_unix_secs: None,
+        error_code: None,
+        error_message: None,
+        video_url: None,
+        persistence: sample_persistence("openai:video"),
+        transport: sample_transport("https://api.openai.example", "openai:video"),
+    }));
+    service.record_snapshot(LocalVideoTaskSnapshot::Gemini(GeminiVideoTaskSeed {
+        local_short_id: "short12345678".to_string(),
+        upstream_operation_name: "operations/ext-video-task-123".to_string(),
+        user_id: Some("user-123".to_string()),
+        api_key_id: Some("key-123".to_string()),
+        model: "veo-3".to_string(),
+        status: LocalVideoTaskStatus::Submitted,
+        progress_percent: 0,
+        error_code: None,
+        error_message: None,
+        metadata: json!({}),
+        persistence: sample_persistence("gemini:video"),
+        transport: sample_transport("https://generativelanguage.googleapis.com", "gemini:video"),
+    }));
+
+    service.apply_finalize_mutation(
+        "/v1/videos/task-local-123/cancel",
+        "openai_video_cancel_sync_finalize",
+    );
+    let cancelled_openai = service
+        .read_response(Some("openai"), "/v1/videos/task-local-123")
+        .expect("openai read response should exist");
+    assert_eq!(cancelled_openai.status_code, 404);
+    assert_eq!(
+        cancelled_openai.body_json,
+        json!({"detail": "Video task was cancelled"})
+    );
+
+    service.apply_finalize_mutation(
+        "/v1beta/models/veo-3/operations/short12345678:cancel",
+        "gemini_video_cancel_sync_finalize",
+    );
+    let cancelled_gemini = service
+        .read_response(
+            Some("gemini"),
+            "/v1beta/models/veo-3/operations/short12345678",
+        )
+        .expect("gemini read response should exist");
+    assert_eq!(cancelled_gemini.status_code, 404);
+    assert_eq!(
+        cancelled_gemini.body_json,
+        json!({"detail": "Video task was cancelled"})
+    );
+
+    service.apply_finalize_mutation(
+        "/v1/videos/task-local-123",
+        "openai_video_delete_sync_finalize",
+    );
+    let deleted_openai = service
+        .read_response(Some("openai"), "/v1/videos/task-local-123")
+        .expect("deleted openai read response should exist");
+    assert_eq!(deleted_openai.status_code, 404);
+    assert_eq!(
+        deleted_openai.body_json,
+        json!({"detail": "Video task not found"})
+    );
+}
+
+#[test]
+fn seed_captures_transport_metadata_from_execution_plan() {
+    let provider_body = json!({"id": "ext-video-task-123"});
+    let report_context = json!({});
+
+    let seed = LocalVideoTaskSeed::from_sync_finalize(
+        "openai_video_create_sync_finalize",
+        provider_body
+            .as_object()
+            .expect("provider body should be object"),
+        report_context
+            .as_object()
+            .expect("report context should be object"),
+        &sample_plan("https://api.openai.example/v1/videos", "openai:video"),
+    )
+    .expect("seed should build");
+
+    let LocalVideoTaskSeed::OpenAiCreate(seed) = seed else {
+        panic!("seed should be openai");
+    };
+    assert_eq!(
+        seed.transport.upstream_base_url,
+        "https://api.openai.example"
+    );
+    assert_eq!(seed.transport.provider_id, "provider-123");
+    assert_eq!(seed.transport.endpoint_id, "endpoint-123");
+    assert_eq!(seed.transport.key_id, "key-123");
+    assert_eq!(
+        seed.transport
+            .headers
+            .get("authorization")
+            .map(String::as_str),
+        Some("Bearer upstream-key")
+    );
+}

crates/aether-gateway/src/video_tasks/types.rs

@@ -0,0 +1,150 @@
+use super::*;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub(crate) enum VideoTaskSyncReportMode {
+    InlineSync,
+    Background,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum VideoTaskTruthSourceMode {
+    #[default]
+    PythonSyncReport,
+    #[allow(dead_code)] // reserved for the next migration step when Rust owns video_tasks writes
+    RustAuthoritative,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) struct LocalVideoTaskSuccessPlan {
+    pub(super) seed: LocalVideoTaskSeed,
+    pub(super) report_mode: VideoTaskSyncReportMode,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) struct LocalVideoTaskFollowUpPlan {
+    pub(crate) plan: ExecutionPlan,
+    pub(crate) report_kind: Option<String>,
+    pub(crate) report_context: Option<Value>,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) struct LocalVideoTaskReadRefreshPlan {
+    pub(crate) plan: ExecutionPlan,
+    pub(super) projection_target: LocalVideoTaskProjectionTarget,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) enum LocalVideoTaskContentAction {
+    Immediate { status_code: u16, body_json: Value },
+    StreamPlan(ExecutionPlan),
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(super) enum LocalVideoTaskProjectionTarget {
+    OpenAi { task_id: String },
+    Gemini { short_id: String },
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub(crate) enum LocalVideoTaskSnapshot {
+    OpenAi(OpenAiVideoTaskSeed),
+    Gemini(GeminiVideoTaskSeed),
+}
+
+#[allow(dead_code)] // projection states are staged for upcoming poller/store wiring
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub(crate) enum LocalVideoTaskStatus {
+    Submitted,
+    Queued,
+    Processing,
+    Completed,
+    Failed,
+    Cancelled,
+    Expired,
+    Deleted,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(crate) struct LocalVideoTaskReadResponse {
+    pub(crate) status_code: u16,
+    pub(crate) body_json: Value,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(crate) enum LocalVideoTaskRegistryMutation {
+    OpenAiCancelled { task_id: String },
+    OpenAiDeleted { task_id: String },
+    GeminiCancelled { short_id: String },
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub(crate) enum LocalVideoTaskSeed {
+    OpenAiCreate(OpenAiVideoTaskSeed),
+    OpenAiRemix(OpenAiVideoTaskSeed),
+    GeminiCreate(GeminiVideoTaskSeed),
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub(crate) struct LocalVideoTaskTransport {
+    pub(super) upstream_base_url: String,
+    pub(super) provider_name: Option<String>,
+    pub(super) provider_id: String,
+    pub(super) endpoint_id: String,
+    pub(super) key_id: String,
+    pub(super) headers: BTreeMap<String, String>,
+    pub(super) content_type: Option<String>,
+    pub(super) model_name: Option<String>,
+    pub(super) proxy: Option<ProxySnapshot>,
+    pub(super) tls_profile: Option<String>,
+    pub(super) timeouts: Option<ExecutionTimeouts>,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub(crate) struct LocalVideoTaskPersistence {
+    pub(super) request_id: String,
+    pub(super) username: Option<String>,
+    pub(super) api_key_name: Option<String>,
+    pub(super) client_api_format: String,
+    pub(super) provider_api_format: String,
+    pub(super) original_request_body: Value,
+    pub(super) format_converted: bool,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub(crate) struct OpenAiVideoTaskSeed {
+    pub(super) local_task_id: String,
+    pub(super) upstream_task_id: String,
+    pub(super) created_at_unix_secs: u64,
+    pub(super) user_id: Option<String>,
+    pub(super) api_key_id: Option<String>,
+    pub(super) model: Option<String>,
+    pub(super) prompt: Option<String>,
+    pub(super) size: Option<String>,
+    pub(super) seconds: Option<String>,
+    pub(super) remixed_from_video_id: Option<String>,
+    pub(super) status: LocalVideoTaskStatus,
+    pub(super) progress_percent: u16,
+    pub(super) completed_at_unix_secs: Option<u64>,
+    pub(super) expires_at_unix_secs: Option<u64>,
+    pub(super) error_code: Option<String>,
+    pub(super) error_message: Option<String>,
+    pub(super) video_url: Option<String>,
+    pub(super) persistence: LocalVideoTaskPersistence,
+    pub(super) transport: LocalVideoTaskTransport,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub(crate) struct GeminiVideoTaskSeed {
+    pub(super) local_short_id: String,
+    pub(super) upstream_operation_name: String,
+    pub(super) user_id: Option<String>,
+    pub(super) api_key_id: Option<String>,
+    pub(super) model: String,
+    pub(super) status: LocalVideoTaskStatus,
+    pub(super) progress_percent: u16,
+    pub(super) error_code: Option<String>,
+    pub(super) error_message: Option<String>,
+    pub(super) metadata: Value,
+    pub(super) persistence: LocalVideoTaskPersistence,
+    pub(super) transport: LocalVideoTaskTransport,
+}