chore(weights): tune awesome-claude scoring parameters

[JSONbored]

Summary

• Tune the JSONbored/awesome-claude repo-local scoring parameters for feature-oriented contributions without changing its allocated share or PR/issue split.

What changed

• Add only two label multipliers: feature=1.5 and bug=1.1.
• Extend the PR scoring lookback to 45 days and use a slower decay curve with a 24-hour grace period, 14-day midpoint, and 0.10 floor.
• Reduce open PR collateral to 0.15 so review latency is less punitive while increasing the review penalty rate to 0.20 for avoidable review churn.
• Raise the maintainer-authored linked issue multiplier to 1.75.
• Leave emission_share, issue_discovery_share, maintainer_cut, and trusted_label_pipeline unchanged.

Why

• awesome-claude should primarily reward substantive feature work while still giving real bug fixes a smaller boost. This keeps the first tuning pass simple, conservative, and limited to repo-local quality knobs.

Validation

• python -m json.tool gittensor/validator/weights/master_repositories.json
• python -m pytest tests/validator/test_load_weights.py tests/validator/test_label_multiplier.py -q
• uv run pre-commit run --all-files --show-diff-on-failure
• SKIP=pytest uv run pre-commit run --all-files --hook-stage pre-push
• uv run pytest tests/ -q

Notes

• This intentionally does not add a maintainer cut. That can be considered separately after the initial quality-oriented tuning lands.
• This also leaves the default label trust gate in place, so GitHub App-applied labels are not newly trusted by this change.