chore(repo): initial baseline import (docs v0.9.2 + bootstrap)

Imports the v0.9.2 documentation baseline and the bootstrap files
required by docs/governance/repository-bootstrap-plan.md v0.1.0 §3,
minus the justfile (added in the next commit).

This commit establishes the git history for the project. All previous
work lived only as filesystem state with no version control.

CHANGELOG.md

@@ -0,0 +1,28 @@
+# Changelog
+
+All notable changes to Chanora will be documented in this file.
+
+This project is expected to follow a Conventional Commits style workflow.
+
+## [Unreleased]
+
+### Added
+
+- Initial repository foundation files.
+- Documentation-first project structure.
+
+### Changed
+
+- N/A
+
+### Fixed
+
+- N/A
+
+### Security
+
+- N/A
+
+## Versioning note
+
+The project implementation has not reached a public release version yet.