Milestone 3.6.6 — Memory Management API (View, Search, Delete, Export)

GET    /v1/agents/{agent_id}/memories          → CursorPage[MemoryResponse] (filtered, paginated)
GET    /v1/agents/{agent_id}/memories/{id}     → MemoryResponse
POST   /v1/agents/{agent_id}/memories/search   → SearchMemoriesResponse (semantic search)
DELETE /v1/agents/{agent_id}/memories/{id}     → 204 (soft delete)
DELETE /v1/agents/{agent_id}/memories          → 204 (bulk soft delete with filter)
POST   /v1/agents/{agent_id}/memories/export   → 202 Accepted (async; returns job_id)
GET    /v1/agents/{agent_id}/memories/export/{job_id} → ExportStatusResponse (with download_url)

class MemoryListParams(BaseModel):
    category:   str | None = None       # filter by category
    status:     str | None = "active"   # default: active only
    source:     str | None = None       # filter by source
    tag:        str | None = None       # filter by tag
    created_after: datetime | None = None
    created_before: datetime | None = None
    limit:      int = Field(default=20, ge=1, le=100)
    cursor:     str | None = None

# DELETE /v1/agents/{agent_id}/memories/{id}
# 1. Soft-delete: set deleted_at = NOW() in ibex_core.memories
# 2. Remove from hot cache (Redis ZREM)
# 3. Remove from any memory_relationships
# 4. Create memory_version with operation='delete'
# 5. If MinIO archive exists for sessions referencing this memory: flag for re-archive
 
# DELETE /v1/organizations/{id} (GDPR full deletion)
# Hard delete of all memories, sessions, checkpoints, directives for the org
# MinIO archives deleted via object lifecycle policy + explicit purge

// CSV export of memories for an agent
// Async job: POST /export returns job_id; GET /export/{job_id} returns download URL
// Format: id, category, content, confidence, source, created_at, retrieval_count
// Privacy: content is included (the operator owns this data); embedding is excluded