feat: parse Algora bounty tech stack

[1275321348]

Closes #4

Summary

• Adds explicit tech stack extraction for Algora bounty results in runtime-opportunity-scout.
• Normalizes known technologies from Algora title, description, language, tech fields, and tags.
• Stores the parsed stack in both the normalized opportunity and queued runtime_jobs payload.

Validation

• Ran git diff --check.
• Reviewed the change against the existing Algora fetch path.
• Skipped project typecheck because dependencies were not installed in this workspace.

Notes

This is intentionally limited to the Algora bounty parsing path.

[1275321348]

Small example of the intended improvement: an Algora item like “Fix Stripe webhook retry logic” can now produce stack hints such as Stripe, Webhook, and the detected language instead of leaving the opportunity mostly generic. This should make downstream filtering and matching more useful without changing the existing discovery flow.