feat(inspect): exported model size

[ActiveChooN]

📝 Description

Added exported model size attribute

• Provide a clear summary of the changes and the issue that has been addressed.
• 🛠️ Fixes # (issue number)

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[Copilot]

Pull Request Overview

This PR adds an exported model size attribute to track the total size in bytes of exported model artifacts. The implementation computes the size after model export and stores it in the database.

Key changes:

• Added a size field to the Model schema to store the total size in bytes of exported model artifacts
• Implemented _compute_export_size method to calculate total size of files/directories in the export path
• Created a database migration to add the size column to the models table

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
application/backend/src/pydantic_models/model.py	Added size field to Model schema with validation
application/backend/src/db/schema.py	Added size column to ModelDB table using BigInteger
application/backend/src/services/training_service.py	Implemented _compute_export_size method and integrated size computation into training flow
application/backend/src/alembic/versions/7bbe7699b43a_add_model_size_column.py	Database migration to add size column
application/backend/tests/unit/services/test_training_service.py	Updated test to mock and verify size computation
application/backend/tests/unit/endpoints/test_models.py	Added size field to fixture and verified in API response
application/backend/tests/unit/conftest.py	Added size field to model fixture

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[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated no new comments.

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[maxxgx]

Minor comments. Looks good, thanks!

[maxxgx]

It's great that you are adding the schema migration script, but since we have not released any version yet, it does not make sense to have a migration at this stage. Rather, you can add the size column to the initial schema 7a213a27d666_initial_schema.py