Promote InnerSource Hackathon pattern to Level 2 (Structured)

[rrrutledge]

Summary

• Promotes the InnerSource Hackathon pattern from Level 1 (Initial) to Level 2 (Structured), making it eligible for publication in the InnerSource Patterns book.
• Adds The Aerospace Corporation as a second Known Instance, based on their InnerSource contribfest presented at the InnerSource Commons Summit 2024 by Tren Baumgarten and Caroline Jones.
• Enriches the Solution section with concrete, experience-based guidance on preparation (funding, awareness, task curation, task boards, access management), participation categories, and event format (introduction, work session, closing, follow-up).
• Adds a Related Patterns section linking to Start as an Experiment, Praise Participants, InnerSource Portal, Dedicated Community Leader, and Gig Marketplace.
• Adds the pattern to the InnerSource Program Mind Map under Begin > Program Setup.
• Adds context about contract-based organizations to the Context section, drawn from the Aerospace Corporation's experience.

Changes Made

File	Change
patterns/1-initial/innersource-hackathon.md	Removed (moved)
patterns/2-structured/innersource-hackathon.md	Added with enhanced content
pattern-categorization/innersource-program-mind-map.md	Added pattern entry

Level 2 Requirements Checklist

• Validated by at least 1 known instance (has 2: IKEA and The Aerospace Corporation)
• Uses the format described in the Pattern Template
• Follows the Pattern Style Guide
• Title is memorable, concise, and descriptive
• Links to related patterns of this level or higher
• Links to outside resources reference trusted resources
• Added to at least one phase of the InnerSource Program Mind Map
• Spelling & Style checks pass (to be verified by CI)
• Markdownlint checks pass (to be verified by CI)

Notes

The Aerospace Corporation's experience is a strong validation of this pattern. They are an FFRDC (Federally Funded Research and Development Center) where developers charge time to government contracts — a context where InnerSource adoption is especially challenging because work not embedded in funded tasking simply doesn't happen. Their contribfest demonstrated that securing dedicated funding for even a single day can overcome this barrier, with measurable results:

• 31 participants across 21 departments
• 15 tickets closed during/shortly after the event
• 2/3 of participants had never heard of InnerSource beforehand
• 100% of survey respondents agreed InnerSource would positively impact development
• Documentation site traffic nearly doubled in the following month

🤖 Generated with Claude Code

[rrrutledge]

Splitting into two PRs: one for adding The Aerospace Corporation as a Known Instance, and a second for promoting to Level 2 (Structured).