feat(RHINENG-21960): Drop system_profile_facts column and canonical_facts

[ezr-ondrej]

Add database migration to drop the system_profile_facts column and its associated GIN index from the hosts table.

🤖 Generated with Claude Code

Overview

This PR is being created to address RHINENG-21797]

Currently we only want to see the errors, to pin point what still depends on this column.
The final migration will most likely be another PR :)

Summary by Sourcery

Enhancements:

• Add Alembic migration to drop the system_profile_facts column and its GIN index from the hosts table with a downgrade to restore them.

[sourcery-ai]

Reviewer's Guide

This PR introduces an Alembic migration that removes the system_profile_facts JSONB column and its GIN index from the hosts table in the upgrade path, while providing a downgrade path that re-adds both the column and index.

Entity Relationship diagram for hosts table after dropping system_profile_facts column

erDiagram
    hosts {
        bigint id PK
    }

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Entity Relationship diagram for hosts table downgrade (restoring system_profile_facts column)

erDiagram
    hosts {
        bigint id PK
        jsonb system_profile_facts
    }
    hosts ||--o{ idxsystem_profile_facts : "GIN index on system_profile_facts"

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File-Level Changes

Change	Details	Files
Add upgrade migration to drop system_profile_facts column and index	Drop GIN index on system_profile_facts Remove system_profile_facts column from hosts table	migrations/versions/dfa988f7d77e_drop_system_profile_facts_column.py
Implement downgrade migration to restore column and index	Re-add system_profile_facts JSONB column (nullable) Recreate GIN index on system_profile_facts	migrations/versions/dfa988f7d77e_drop_system_profile_facts_column.py

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