### Initialize Local Development Environment

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Commands to sync backend dependencies, install frontend packages, and start the development services.

```bash
uv sync                          # backend deps
cd frontend && npm install && cd ..

make dev                         # starts PostgreSQL, runs migrations, then backend (:8002) + frontend (:5174)
```

--------------------------------

### Install Yuralume-Core via One-line Command

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Use these commands to pull and run the prebuilt Docker stack. Requires Docker Desktop installed.

```bash
curl -fsSL https://yuralume.com/install.sh | bash
```

```powershell
irm https://yuralume.com/install.ps1 | iex
```

--------------------------------

### GET /voices

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Retrieves the list of available character voices for the voice picker.

```APIDOC
## GET /voices

### Description
Retrieves the catalog of available voices. The app uses this to populate the character voice picker.

### Method
GET

### Endpoint
{base_url}/voices

### Response
#### Success Response (200)
- **voices** (array) - List of available voices.
  - **id** (string) - Required. The stable voice identifier.
  - **label** (string) - Human-readable name.
  - **prompt_lang** (string) - Language tag of the reference sample.
  - **is_complete** (boolean) - Indicates if the voice is fully set up.

#### Response Example
{
  "voices": [
    { "id": "mira", "label": "Mira (calm)", "prompt_lang": "ja", "is_complete": true }
  ]
}
```

--------------------------------

### GET /voices

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Retrieves the list of available voices from the custom TTS server.

```APIDOC
## GET /voices

### Description
Fetches the catalog of voices available on the custom TTS server.

### Method
GET

### Endpoint
{base_url}/voices

### Request Headers
- **Authorization** (string) - Optional - Bearer <api_key>
- **X-Request-Id** (string) - Required - tts-<hex>
```

--------------------------------

### GET /voices

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Retrieves the list of available voices supported by the custom TTS server.

```APIDOC
## GET /voices

### Description
Returns a list of voices available for selection in the character voice picker.

### Method
GET

### Endpoint
/voices

### Response
#### Success Response (200)
- **voices** (array) - List of voice objects
  - **id** (string) - Unique identifier for the voice
  - **label** (string) - Display name for the voice
  - **prompt_lang** (string) - Language code for the prompt
  - **is_complete** (boolean) - Status of the voice configuration

#### Response Example
{
  "voices": [
    {
      "id": "mira",
      "label": "Mira (calm)",
      "prompt_lang": "ja",
      "is_complete": true
    }
  ]
}
```

--------------------------------

### Voice catalog response structure

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

The expected JSON response format for the GET /voices endpoint, containing a list of available voice objects.

```json
{
  "voices": [
    { "id": "mira", "label": "Mira (calm)", "prompt_lang": "ja", "is_complete": true }
  ]
}
```

--------------------------------

### Minimal ComfyUI Gateway Implementation

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

A FastAPI-based starter service that proxies image generation requests to a local ComfyUI instance. Requires a workflow.json file and assumes a trusted LAN environment.

```python
# gateway.py — minimal Custom Media Gateway starter. Not tuned.
# pip install fastapi uvicorn httpx
import json, uuid, asyncio
from pathlib import Path
import httpx
from fastapi import FastAPI
from fastapi.responses import Response
from pydantic import BaseModel

COMFY = "http://127.0.0.1:8188"
WORKFLOW = json.loads(Path("workflow.json").read_text())  # one hardcoded workflow
PROMPT_NODE = "6"   # the id of your CLIPTextEncode (positive) node in workflow.json

app = FastAPI()
_artifacts: dict[str, bytes] = {}  # in-memory; fine for a LAN starter


class ImageRequest(BaseModel):
    model: str
    prompt: str
    size: str = "1024x1024"
    n: int = 1


@app.post("/images/generations")
async def images_generations(req: ImageRequest):
    # NOTE (starter): prompt goes in verbatim. A real gateway rewrites the
    # prompt per model (SDXL tags / z-image bilingual / ideogram JSON / ...).
    wf = json.loads(json.dumps(WORKFLOW))            # deep copy
    wf[PROMPT_NODE]["inputs"]["text"] = req.prompt   # inject Core's prompt

    async with httpx.AsyncClient(timeout=180) as http:
        queued = await http.post(f"{COMFY}/prompt", json={"prompt": wf})
        prompt_id = queued.json()["prompt_id"]

        # poll history until this prompt finishes
        while True:
            hist = (await http.get(f"{COMFY}/history/{prompt_id}")).json()
            if prompt_id in hist:
                break
            await asyncio.sleep(1.0)

        # pull the first output image ComfyUI produced
        outputs = hist[prompt_id]["outputs"]
        img = next(o["images"][0] for o in outputs.values() if o.get("images"))
        raw = await http.get(
            f"{COMFY}/view",
            params={"filename": img["filename"], "subfolder": img.get("subfolder", ""),
                    "type": img.get("type", "output")},
        )

    art_id = uuid.uuid4().hex
    _artifacts[art_id] = raw.content
    # relative url; Core resolves it against base_url and GETs it WITHOUT auth
    return {"data": [{"url": f"/artifacts/{art_id}"}]}


@app.get("/artifacts/{art_id}")
def artifact(art_id: str):
    # unauthenticated on purpose — trusted LAN only (see gotcha 2)
    return Response(content=_artifacts.get(art_id, b""), media_type="image/png")


# run: uvicorn gateway:app --host 0.0.0.0 --port 8000
```

--------------------------------

### Self-host with Docker Compose (End User)

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Commands to download configuration files and deploy the stack without cloning the repository.

```bash
mkdir yuralume && cd yuralume
curl -O https://raw.githubusercontent.com/Yuralume/yuralume-core/main/docker-compose.container.yml
curl -O https://raw.githubusercontent.com/Yuralume/yuralume-core/main/.env.container.example
cp .env.container.example .env.container
# (edit .env.container — at minimum set APP_BASE_URL, CONFIG_ENCRYPTION_KEY and STORAGE_KEY)
docker compose -f docker-compose.container.yml --profile storage-local pull
docker compose -f docker-compose.container.yml --profile storage-local up -d
```

--------------------------------

### Self-host with Docker Compose (Source Checkout)

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Commands for developers to build and run the stack from a local source checkout.

```powershell
Copy-Item .env.container.example .env.container
docker compose -f docker-compose.container.yml --profile storage-local up -d --build
```

--------------------------------

### Implement a minimal Custom TTS Server gateway

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

A starter FastAPI implementation that maps internal voice IDs to backend-specific reference audio and parameters. Requires the httpx and fastapi libraries.

```python
# tts_gateway.py — minimal Custom TTS Server starter. Not tuned.
# pip install fastapi uvicorn httpx
import httpx
from fastapi import FastAPI, Response
from pydantic import BaseModel

SOVITS = "http://127.0.0.1:9880"  # GPT-SoVITS api_v2.py

# The one place to hide backend quirks: map a stable voice_id the player
# picks to whatever THIS engine needs (reference audio + its transcript).
# A real server also switches GPT/SoVITS weights per voice here.
VOICES = {
    "mira": {
        "label": "Mira (calm)",
        "prompt_lang": "ja",
        "ref_audio_path": "/gpt_sovits/refs/mira.wav",
        "prompt_text": "こんにちは、今日はいい天気ですね。",
    },
}

app = FastAPI()


class SynthOptions(BaseModel):
    text_lang: str = "zh"
    prompt_lang: str = "zh"
    speed_factor: float = 1.0


class SynthRequest(BaseModel):
    text: str
    voice_id: str
    feature_key: str = "chat"
    options: SynthOptions = SynthOptions()


@app.get("/voices")
def voices():
    return {
        "voices": [
            {
                "id": vid,
                "label": v["label"],
                "prompt_lang": v["prompt_lang"],
                "is_complete": True,
            }
            for vid, v in VOICES.items()
        ]
    }


@app.post("/tts/synthesize")
async def synthesize(req: SynthRequest):
    voice = VOICES.get(req.voice_id)
    if voice is None:
        # 404 → Core treats this voice as unavailable (greys the play button)
        return Response(status_code=404)
    params = {
        "text": req.text,
        "text_lang": req.options.text_lang,
        "ref_audio_path": voice["ref_audio_path"],
        "prompt_text": voice["prompt_text"],
        "prompt_lang": voice["prompt_lang"] or req.options.prompt_lang,
        "speed_factor": req.options.speed_factor,
        "media_type": "wav",
        "streaming_mode": "false",
    }
    async with httpx.AsyncClient(timeout=90) as http:
        upstream = await http.get(f"{SOVITS}/tts", params=params)
    if upstream.status_code != 200:
        # any non-2xx → Core raises TTSError → 502 (retry might help)
        return Response(status_code=502)
    # raw audio bytes in the body — NOT JSON. Content-Type sets the media type.
    return Response(content=upstream.content, media_type="audio/wav")


# run: uvicorn tts_gateway:app --host 0.0.0.0 --port 8100
# register in Admin with base_url = http://<host>:8100
```

--------------------------------

### Verify Deployment with Smoke Script

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Run the smoke test script to validate the deployment health, optionally including an OpenAI key for round-trip testing.

```bash
uv run python scripts/self_host_smoke.py            # baseline (no provider keys)
uv run python scripts/self_host_smoke.py --openai-key sk-...   # BYOK round-trip too
```

--------------------------------

### Project Directory Structure

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

The project follows a modular structure separating API routes, application logic, domain entities, and infrastructure adapters.

```text
src/kokoro_link/
  api/            # FastAPI routes
  application/    # Use cases, DTOs, services
  bootstrap/      # Container, settings, startup wiring
  contracts/      # Port interfaces (provider-agnostic)
  domain/         # Entities, value objects
  infrastructure/ # Repositories, LLM adapters, persistence
frontend/         # Vue 3 + Vite + Ant Design Vue
alembic/          # Database migrations
docker/           # Local infra Dockerfiles
tests/{unit,integration}/
```

--------------------------------

### Synthesize HTTP Response Format

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

The server must return raw audio bytes with a corresponding Content-Type header. Core caches these responses based on the returned content.

```http
HTTP/1.1 200 OK
Content-Type: audio/wav

<binary audio bytes>
```

--------------------------------

### POST /synthesize

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Requests speech synthesis for a given text and voice configuration.

```APIDOC
## POST /synthesize

### Description
Submits text to be synthesized into audio using a specified voice and configuration options.

### Method
POST

### Request Body
- **text** (string) - The line to speak (max 4000 chars).
- **voice_id** (string) - The catalog ID of the voice to use.
- **feature_key** (string) - The calling surface (e.g., "chat").
- **options** (object) - Configuration options.
  - **text_lang** (string) - Language of the text (default "zh").
  - **prompt_lang** (string) - Language of the voice's reference prompt (default "zh").
  - **speed_factor** (float) - Playback speed multiplier (default 1.0).

### Request Example
{
  "text": "今日はいい天気ですね。",
  "voice_id": "mira",
  "feature_key": "chat",
  "options": {
    "text_lang": "ja",
    "prompt_lang": "ja",
    "speed_factor": 1.0
  }
}
```

--------------------------------

### Define Video Request Body

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Schema for video generation requests, specifying model, prompt, aspect ratio, and duration.

```json
{
  "model": "yuralume-motion",
  "prompt": "Character: ...\nScene: ...",
  "aspect_ratio": "9:16",
  "duration_seconds": 5
}
```

--------------------------------

### POST /videos/generations

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Endpoint used by Yuralume Core to request video generation from the custom gateway.

```APIDOC
## POST /videos/generations

### Description
Requests a video generation task from the custom media gateway.

### Method
POST

### Endpoint
{base_url}/videos/generations

### Request Headers
- **Authorization** (string) - Required - Bearer <api_key>
- **X-Request-Id** (string) - Required - vid-<hex>
- **Content-Type** (string) - Required - application/json
```

--------------------------------

### Probe LLM Capacity

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Measure the capacity of a local OpenAI-compatible LLM endpoint using either raw vLLM mode or Core-integrated chat mode.

```bash
uv run python scripts/llm_capacity_probe.py raw-vllm --endpoint http://127.0.0.1:8001/v1 --disable-reasoning --concurrency 1,2,4,8 --requests-per-step 16
uv run python scripts/llm_capacity_probe.py core-chat --core-url http://127.0.0.1:8002 --email admin@example.com --password ... --characters 8 --concurrency 1,2,4,8 --requests-per-step 16
```

--------------------------------

### POST /tts/synthesize

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Sends a synthesis request to the custom TTS server to generate audio.

```APIDOC
## POST /tts/synthesize

### Description
Requests the server to synthesize speech based on the provided parameters.

### Method
POST

### Endpoint
{base_url}/tts/synthesize

### Request Headers
- **Authorization** (string) - Optional - Bearer <api_key>
- **X-Request-Id** (string) - Required - tts-<hex>
- **Content-Type** (string) - Required - application/json
```

--------------------------------

### Video Generation Request

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Defines the structure for requesting video generation from the gateway.

```APIDOC
## Video Request

### Request Body
- **model** (string) - Required - Must be set to yuralume-motion.
- **prompt** (string) - Required - Contextual description for the video scene.
- **aspect_ratio** (string) - Required - One of 9:16, 16:9, or 1:1.
- **duration_seconds** (integer) - Required - Requested duration in seconds.

### Request Example
{
  "model": "yuralume-motion",
  "prompt": "Character: ...\nScene: ...",
  "aspect_ratio": "9:16",
  "duration_seconds": 5
}
```

--------------------------------

### Memoir Localization JSON Schemas

Source: https://github.com/yuralume/yuralume-core/blob/main/src/kokoro_link/data/prompts/memoir/localizer.txt

Defines the input structure for raw memoir data and the required output structure for localized content.

```json
{
  "chapters": [
    {
      "index": 0,
      "period": "week",
      "narrative": "...",
      "dominant_themes": ["..."],
      "evidence_quotes": ["..."]
    }
  ],
  "timeline": [
    {
      "index": 0,
      "kind": "memory|emotion|milestone",
      "summary": "...",
      "extras": {
        "tags": "comma,separated,visible,tags",
        "emotion_label": "..."
      }
    }
  ]
}
```

```json
{
  "chapters": [
    {
      "index": 0,
      "narrative": "...",
      "dominant_themes": ["..."],
      "evidence_quotes": ["..."]
    }
  ],
  "timeline": [
    {
      "index": 0,
      "summary": "...",
      "extras": {
        "tags": "comma,separated,visible,tags",
        "emotion_label": "..."
      }
    }
  ]
}
```

--------------------------------

### Generate VAPID Key Pair

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Generates a JSON-formatted VAPID key pair for browser Web Push functionality.

```powershell
.venv\Scripts\python.exe -m py_vapid --gen --json
```

--------------------------------

### Synthesize response

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

The TTS server must return raw audio bytes as the response body. The system uses the Content-Type header to determine the media format, defaulting to audio/wav.

```APIDOC
## [POST] /tts/synthesize

### Description
Returns raw audio bytes for the requested text. The response body is treated as the audio clip, and the Content-Type header specifies the audio format (e.g., audio/wav, audio/mpeg).

### Method
POST

### Endpoint
/tts/synthesize

### Response
#### Success Response (200)
- **Content-Type** (header) - The MIME type of the audio (e.g., audio/wav, audio/mp3, audio/ogg).
- **Body** (binary) - Raw audio bytes of the synthesized speech.

#### Response Example
HTTP/1.1 200 OK
Content-Type: audio/wav

<binary audio bytes>
```

--------------------------------

### POST /tts/synthesize

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Synthesizes text into audio using the specified voice and options.

```APIDOC
## POST /tts/synthesize

### Description
Performs text-to-speech synthesis based on the provided text and voice configuration. Returns raw audio bytes.

### Method
POST

### Endpoint
/tts/synthesize

### Request Body
- **text** (string) - The text to synthesize
- **voice_id** (string) - The ID of the voice to use
- **feature_key** (string) - Feature context key (default: "chat")
- **options** (object) - Synthesis configuration
  - **text_lang** (string) - Language of the input text
  - **prompt_lang** (string) - Language of the prompt
  - **speed_factor** (float) - Playback speed multiplier

### Request Example
{
  "text": "Hello world",
  "voice_id": "mira",
  "options": {
    "text_lang": "ja",
    "prompt_lang": "ja",
    "speed_factor": 1.0
  }
}

### Response
#### Success Response (200)
- **Content-Type** (audio/wav) - Raw audio bytes

#### Error Response (404)
- Voice ID not found.

#### Error Response (502)
- Upstream synthesis failure.
```

--------------------------------

### Define Image Request Body

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Schema for image generation requests, including model selection, prompt, size, and quantity.

```json
{
  "model": "yuralume-anime",
  "prompt": "Character: Mira\nAppearance: ...\nCurrent emotion: ...\nScene: ...\nRecent dialogue context: ...",
  "size": "1024x1536",
  "n": 1
}
```

--------------------------------

### POST /images/generations

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Endpoint used by Yuralume Core to request image generation from the custom gateway.

```APIDOC
## POST /images/generations

### Description
Requests an image generation task from the custom media gateway.

### Method
POST

### Endpoint
{base_url}/images/generations

### Request Headers
- **Authorization** (string) - Required - Bearer <api_key>
- **X-Request-Id** (string) - Required - img-<hex>
- **Content-Type** (string) - Required - application/json
```

--------------------------------

### Image Generation Request

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Defines the structure for requesting image generation from the gateway.

```APIDOC
## Image Request

### Request Body
- **model** (string) - Required - Passthrough of the configured image_model.
- **prompt** (string) - Required - Multi-line English string containing character and scene context.
- **size** (string) - Required - Dimensions: 1024x1536, 1536x1024, or 1024x1024.
- **n** (integer) - Required - Number of images to generate (1-4).

### Request Example
{
  "model": "yuralume-anime",
  "prompt": "Character: Mira\nAppearance: ...\nCurrent emotion: ...\nScene: ...\nRecent dialogue context: ...",
  "size": "1024x1536",
  "n": 1
}
```

--------------------------------

### Gateway Request Headers

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Standard headers included in all POST requests to the gateway. The Authorization header contains the configured API key, and the X-Request-Id provides a unique identifier for tracking.

```http
Authorization: Bearer <api_key>
X-Request-Id: img-<hex>   (or vid-<hex> for video)
Content-Type: application/json
```

--------------------------------

### Define Image Response Body

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_MEDIA_GATEWAY_SPEC.md

Schema for image generation responses, containing a list of artifacts with either base64 data or URLs.

```json
{
  "data": [
    { "url": "/v1/artifacts/abc123" }
  ]
}
```

--------------------------------

### Story Arc Template JSON Schema

Source: https://github.com/yuralume/yuralume-core/blob/main/src/kokoro_link/data/prompts/fusion/adapt_to_arc.txt

The required JSON structure for defining a playable story arc, including metadata and a sequence of narrative beats.

```json
{
  "id": "snake_case_unique_template_id",
  "title": "short display title",
  "premise": "60-120 character premise that states the playable arc",
  "theme": "ambition|friendship|loss|discovery|transformation|redemption|custom",
  "tone": "daily|dramatic|mature|dark|lighthearted",
  "duration_days": 7,
  "world_frames": ["modern"],
  "required_traits": [],
  "beats": [
    {
      "sequence": 0,
      "day_offset": 0,
      "title": "beat title",
      "summary": "100-150 character runtime instruction for the scene",
      "tension": "setup|rising|climax|falling|resolution",
      "scene_type": "encounter|revelation|conflict|resolution|interlude",
      "location": "optional location",
      "scene_characters": ["optional NPC or cast labels"],
      "dramatic_question": "optional scene question",
      "required": true,
      "operator_position": "absent|present|central",
      "operator_note": "optional one sentence, may be empty"
    }
  ]
}
```

--------------------------------

### ArcTemplate Draft JSON Schema

Source: https://github.com/yuralume/yuralume-core/blob/main/src/kokoro_link/data/prompts/story/arc_series_continuation_draft.txt

The required structure for the ArcTemplate draft output. Ensure all fields are populated based on the provided character and series context.

```json
{
  "id": "short_slug",
  "title": "Draft title",
  "premise": "Playable premise for the next season",
  "theme": "custom",
  "tone": "daily|dramatic|lighthearted|dark|mature",
  "duration_days": 14,
  "world_frames": ["modern"],
  "required_traits": [],
  "beats": [
    {
      "sequence": 0,
      "day_offset": 0,
      "title": "Beat title",
      "summary": "Concrete playable scene seed",
      "tension": "setup",
      "scene_type": "encounter",
      "location": "optional location",
      "scene_characters": [],
      "dramatic_question": "optional dramatic question",
      "required": true
    }
  ]
}
```

--------------------------------

### Define Custom TTS Request Headers

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

Required HTTP headers for both the voice catalog and synthesis endpoints. The Authorization header is only included if an API key is configured in the Core settings.

```http
Authorization: Bearer <api_key>   (only sent when an api_key is configured)
X-Request-Id: tts-<hex>
Content-Type: application/json     (synthesize only)
```

--------------------------------

### Synthesize request body structure

Source: https://github.com/yuralume/yuralume-core/blob/main/docs/CUSTOM_TTS_SERVER_SPEC.md

The JSON payload required for synthesis requests, containing the text to be spoken and associated configuration options.

```json
{
  "text": "今日はいい天気ですね。",
  "voice_id": "mira",
  "feature_key": "chat",
  "options": {
    "text_lang": "ja",
    "prompt_lang": "ja",
    "speed_factor": 1.0
  }
}
```

--------------------------------

### Repair User Timezone

Source: https://github.com/yuralume/yuralume-core/blob/main/README.md

Performs a dry run or applies a timezone correction for a specific user account.

```bash
uv run python -m kokoro_link.cli.repair_user_timezone --email alice@example.com --timezone Asia/Taipei
uv run python -m kokoro_link.cli.repair_user_timezone --email alice@example.com --timezone Asia/Taipei --apply
```

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