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.

.gitignore

@@ -0,0 +1,83 @@
+# OS files
+.DS_Store
+Thumbs.db
+
+# Editors
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Logs
+*.log
+logs/
+
+# Environment / secrets
+.env
+.env.*
+!.env.example
+*.pem
+*.key
+*.p12
+*.mobileprovision
+*.keystore
+*.jks
+
+# Build output
+build/
+dist/
+out/
+target/
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+ios/Pods/
+ios/.symlinks/
+android/.gradle/
+android/app/build/
+
+# Generated reports
+reports/
+coverage/
+
+# Diagnostic bundles
+diagnostics/
+*.diag.zip
+*.diagnostic.zip
+
+# Local databases
+*.sqlite
+*.sqlite3
+*.db
+*.db-shm
+*.db-wal
+
+# Temporary files
+tmp/
+temp/
+.cache/
+
+# Upstream documentation snapshots (kept as reference, not project source)
+chanora-docs-repo-format-*.zip
+
+# Cargo
+**/Cargo.lock.bak
+
+# Flutter / Dart generated (but keep pubspec.lock for the PoC apps)
+**/.dart_tool/
+**/.flutter-plugins
+**/.flutter-plugins-dependencies
+**/.packages
+**/build/
+**/ephemeral/
+**/generated_plugin_registrant.*
+**/GeneratedPluginRegistrant.*
+
+# FRB / cargokit local build dirs
+**/cargokit_build/
+
+# IntelliJ / Android Studio per-project
+**/*.iml