Initial: add README, CONTRIBUTING, LICENSE, and research template

CONTRIBUTING.md

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+# Contributing
+
+## Workflow
+
+1. Create a branch for your work: `git checkout -b fix/issue-N-name` or `git checkout -b docs/topic-name`
+2. Make changes and commit with clear messages
+3. Open a Pull Request for review
+4. Do not merge directly to `master` for reviewable changes
+5. After approval, squash and merge
+
+## Guidelines
+
+- Use clear, descriptive commit messages
+- Keep PRs focused and reasonably sized
+- Document any non-obvious decisions
+- Test changes before submitting
+
+## Branches
+
+- `master` — stable, reviewed content only
+- `fix/*` — bug fixes
+- `docs/*` — documentation updates
+- `research/*` — new research notes

LICENSE

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+MIT License
+
+Copyright (c) 2025
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# kugetsu
+
+Research notes and documentation repository.
+
+> **Name background:** _to be documented_
+
+## Overview
+
+This repository contains research findings, experiments, and documentation on various topics.
+
+## Structure
+
+```
+├── README.md
+├── CONTRIBUTING.md
+├── LICENSE
+└── docs/
+    └── ...
+```
+
+## License
+
+MIT

docs/_template.md

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+# Research: [Topic]
+
+**Date:** YYYY-MM-DD
+**Status:** In Progress | Completed | Archived
+
+## Summary
+
+Brief overview of the research topic.
+
+## Background
+
+Why this matters and context.
+
+## Findings
+
+### Key Discovery 1
+
+Description...
+
+### Key Discovery 2
+
+Description...
+
+## Notes
+
+- Point 1
+- Point 2
+
+## References
+
+- [Link description](URL)
+
+## Status History
+
+- YYYY-MM-DD: Initial research started