chore(main): release 0.5.0

[github-actions]

🤖 I have created a release beep boop

0.5.0 (2026-02-18)

Features

• add asciinema demo recording to website and README (#68) (bab183b)
• add generic API knowledge source ingestion (#80) (0169820)
• add github and gitlab code-fix pointers for investigations (#69) (9b905e3)
• add notion knowledge source ingestion (#79) (2a7dc0a)
• add operability context adapter implementations (#66) (0fdf700)
• add operability context ingestion flow (#64) (d343a95)
• configured knowledge sources + hybrid retrieval (#77) (d5d9ee3)
• validate knowledge source credentials and fields (#81) (ead8850)

Bug Fixes

• convert demo.cast timestamps from relative to absolute (#72) (b454070)
• convert demo.cast to v2 format and add GIF to README (#71) (6cdae65)
• restore runbook_context adapter type in config enum (#70) (b209f63)

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