digraph data_model {
    rankdir=LR
    bgcolor="#0a0e17"
    fontname="Helvetica"
    node [fontname="Helvetica" fontsize=11 shape=plaintext]
    edge [fontname="Helvetica" fontsize=9 fontcolor="#8892a8" color="#4a5568"]

    label="Data Model"
    labelloc=t
    fontsize=16
    fontcolor="#0066ff"

    MediaAsset [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>MediaAsset</b></font></td></tr>
            <tr><td><font color="#8892a8">id</font></td><td><font color="#e8eaf0">UUID PK</font></td></tr>
            <tr><td><font color="#8892a8">filename</font></td><td><font color="#e8eaf0">str</font></td></tr>
            <tr><td><font color="#8892a8">file_path</font></td><td><font color="#e8eaf0">str (relative)</font></td></tr>
            <tr><td><font color="#8892a8">duration / fps / size</font></td><td><font color="#e8eaf0">probe metadata</font></td></tr>
        </table>
    >]

    Profile [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>Profile</b></font></td></tr>
            <tr><td><font color="#8892a8">name</font></td><td><font color="#e8eaf0">str</font></td></tr>
            <tr><td><font color="#8892a8">pipeline</font></td><td><font color="#e8eaf0">JSONB topology</font></td></tr>
            <tr><td><font color="#8892a8">configs</font></td><td><font color="#e8eaf0">JSONB per-stage</font></td></tr>
        </table>
    >]

    Timeline [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>Timeline</b></font></td></tr>
            <tr><td><font color="#8892a8">id</font></td><td><font color="#e8eaf0">UUID PK</font></td></tr>
            <tr><td><font color="#8892a8">source_asset_id</font></td><td><font color="#e8eaf0">FK MediaAsset</font></td></tr>
            <tr><td><font color="#8892a8">chunk_paths</font></td><td><font color="#e8eaf0">str[]</font></td></tr>
            <tr><td><font color="#8892a8">profile_name</font></td><td><font color="#e8eaf0">str</font></td></tr>
            <tr><td><font color="#8892a8">fps / status</font></td><td><font color="#e8eaf0">cached, ready, ...</font></td></tr>
        </table>
    >]

    Job [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>Job</b></font></td></tr>
            <tr><td><font color="#8892a8">id</font></td><td><font color="#e8eaf0">UUID PK</font></td></tr>
            <tr><td><font color="#8892a8">timeline_id</font></td><td><font color="#e8eaf0">FK Timeline</font></td></tr>
            <tr><td><font color="#8892a8">parent_id</font></td><td><font color="#e8eaf0">FK Job (replay tree)</font></td></tr>
            <tr><td><font color="#8892a8">profile_name</font></td><td><font color="#e8eaf0">str</font></td></tr>
            <tr><td><font color="#8892a8">config_overrides</font></td><td><font color="#e8eaf0">JSONB</font></td></tr>
            <tr><td><font color="#8892a8">run_type</font></td><td><font color="#e8eaf0">initial / replay / retry</font></td></tr>
            <tr><td><font color="#8892a8">status / current_stage</font></td><td><font color="#e8eaf0">runtime</font></td></tr>
        </table>
    >]

    Checkpoint [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>Checkpoint</b></font></td></tr>
            <tr><td><font color="#8892a8">id</font></td><td><font color="#e8eaf0">UUID PK</font></td></tr>
            <tr><td><font color="#8892a8">timeline_id</font></td><td><font color="#e8eaf0">FK Timeline</font></td></tr>
            <tr><td><font color="#8892a8">job_id</font></td><td><font color="#e8eaf0">FK Job (nullable)</font></td></tr>
            <tr><td><font color="#8892a8">parent_id</font></td><td><font color="#e8eaf0">FK Checkpoint (tree)</font></td></tr>
            <tr><td><font color="#8892a8">stage_name</font></td><td><font color="#e8eaf0">str</font></td></tr>
            <tr><td><font color="#8892a8">config_overrides / stats</font></td><td><font color="#e8eaf0">JSONB (no blobs)</font></td></tr>
        </table>
    >]

    StageOutput [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>StageOutput</b></font></td></tr>
            <tr><td><font color="#8892a8">id</font></td><td><font color="#e8eaf0">UUID PK</font></td></tr>
            <tr><td><font color="#8892a8">job_id</font></td><td><font color="#e8eaf0">FK Job</font></td></tr>
            <tr><td><font color="#8892a8">timeline_id</font></td><td><font color="#e8eaf0">FK Timeline</font></td></tr>
            <tr><td><font color="#8892a8">stage_name</font></td><td><font color="#e8eaf0">str</font></td></tr>
            <tr><td><font color="#8892a8">checkpoint_id</font></td><td><font color="#e8eaf0">FK Checkpoint (nullable)</font></td></tr>
            <tr><td><font color="#8892a8">output</font></td><td><font color="#e8eaf0">JSONB (flat upsert)</font></td></tr>
        </table>
    >]

    Brand [label=<
        <table border="0" cellborder="1" cellspacing="0" color="#1e2a4a" bgcolor="#121829">
            <tr><td colspan="2" bgcolor="#0d1a33"><font color="#0066ff" face="JetBrains Mono"><b>Brand</b></font></td></tr>
            <tr><td><font color="#8892a8">canonical_name</font></td><td><font color="#e8eaf0">str (indexed)</font></td></tr>
            <tr><td><font color="#8892a8">aliases</font></td><td><font color="#e8eaf0">str[]</font></td></tr>
            <tr><td><font color="#8892a8">source</font></td><td><font color="#e8eaf0">ocr / local_vlm / cloud_llm / manual</font></td></tr>
            <tr><td><font color="#8892a8">airings</font></td><td><font color="#e8eaf0">JSONB[]</font></td></tr>
        </table>
    >]

    MediaAsset -> Timeline      [label="source_asset_id"]
    Timeline   -> Job           [label="timeline_id"]
    Job        -> Job           [label="parent_id\n(replay tree)" style=dashed]
    Profile    -> Job           [label="profile_name" color="#0066ff"]
    Job        -> Checkpoint    [label="job_id"]
    Timeline   -> Checkpoint    [label="timeline_id"]
    Checkpoint -> Checkpoint    [label="parent_id\n(tree)" style=dashed]
    Job        -> StageOutput   [label="job_id"]
    Checkpoint -> StageOutput   [label="checkpoint_id" style=dotted]
}