chore: add gitignore, gitattributes and editorconfig

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.editorconfig

@@ -0,0 +1,18 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.go]
+indent_style = tab
+
+[Makefile]
+indent_style = tab
+
+[*.md]
+trim_trailing_whitespace = false

.gitattributes

@@ -0,0 +1,12 @@
+# Normalise to LF everywhere; scripts and configs run on Linux.
+* text=auto eol=lf
+
+*.png binary
+*.jpg binary
+*.ico binary
+*.woff2 binary
+
+# Generated code: collapsed in diffs
+proto/gen/** linguist-generated=true
+server/api/gen/** linguist-generated=true
+web/src/api/schema.d.ts linguist-generated=true

.gitignore

@@ -0,0 +1,35 @@
+# Build output
+/bin/
+/dist/
+/coverage/
+*.test
+*.out
+coverage.txt
+coverage.html
+
+# Web
+/web/node_modules/
+/web/dist/*
+!/web/dist/.gitkeep
+/web/coverage/
+*.tsbuildinfo
+
+# Local configuration and secrets (never commit)
+*.key
+*.pem
+*.p12
+*.pfx
+master.key
+.env
+.env.*
+!.env.example
+/deploy/compose/.env
+/local/
+
+# Editors and OS
+.idea/
+.vscode/*
+!.vscode/extensions.json
+*.swp
+.DS_Store
+Thumbs.db