chore(repo): initialize repository structure

- Adds base src/tests/docs scaffolding
- Preserves planning and documentation artifacts
- Applies baseline ignore patterns for .NET and container workflows
- Sets development as the working branch

.gitignore

@@ -0,0 +1,53 @@
+# AgileWebs local orchestration
+.tasks/
+.agile/
+
+# Build artifacts
+**/[Bb]in/
+**/[Oo]bj/
+/**/out/
+/**/artifacts/
+
+# IDE and editor files
+.vs/
+.idea/
+.vscode/
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+*.rsuser
+*.swp
+*.swo
+
+# NuGet
+*.nupkg
+*.snupkg
+**/packages/*
+!**/packages/build/
+
+# Test output
+**/TestResults/
+*.trx
+*.coverage
+*.coveragexml
+
+# Logs
+*.log
+logs/
+
+# Local environment files
+.env
+.env.*
+!.env.example
+
+# Docker
+.docker/
+**/.docker/
+*.pid
+docker-compose.override.yml
+docker-compose.*.override.yml
+
+# OS files
+.DS_Store
+Thumbs.db