chore(release): bump version to 0.5.7

[divyasinghds]

Summary

Bumps __version__ from 0.5.6 to 0.5.7 on develop to open the next release cycle after #330 promoted v0.5.6 to master.

setup.py reads the literal from tracebloc_ingestor/__init__.py (#175), so this is the only file to bump.

Test plan

• __version__ resolves to 0.5.7 from a Python import.
• No functional code change; existing suite continues to pass unchanged.

🤖 Generated with Claude Code

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Note

Low Risk
Single-line version constant change with no behavioral impact.

Overview
Version bump only: __version__ in tracebloc_ingestor/__init__.py changes from 0.5.6 to 0.5.7 to start the next release cycle on develop after v0.5.6 shipped.

No runtime or API changes. setup.py still reads this literal via _read_version(), so packaging version stays in sync without editing setup.py.

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