chore: standardize .gitignore (RSR)

Author: hyperpolymath

.gitignore

@@ -1,34 +1,79 @@
-# Rust
-/target/
-Cargo.lock
-*.rs.bk
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# RSR-compliant .gitignore
 
-# Elixir
+# OS & Editor
+.DS_Store
+Thumbs.db
+*.swp
+*.swo
+*~
+.idea/
+.vscode/
+
+# Build
+/target/
 /_build/
+/build/
+/dist/
+/out/
+
+# Dependencies
+/node_modules/
+/vendor/
 /deps/
+/.elixir_ls/
+
+# Rust
+# Cargo.lock  # Keep for binaries
+
+# Elixir
+/cover/
+/doc/
 *.ez
-*.beam
 erl_crash.dump
-.elixir_ls/
 
-# Nix
-result
-result-*
+# Julia
+*.jl.cov
+*.jl.mem
+/Manifest.toml
 
-# IDE
-.idea/
-.vscode/
-*.swp
-*.swo
-*~
+# ReScript
+/lib/bs/
+/.bsb.lock
 
-# OS
-.DS_Store
-Thumbs.db
+# Python (SaltStack only)
+__pycache__/
+*.py[cod]
+.venv/
+
+# Ada/SPARK
+*.ali
+/obj/
+/bin/
+
+# Haskell
+/.stack-work/
+/dist-newstyle/
+
+# Chapel
+*.chpl.tmp.*
+
+# Secrets
+.env
+.env.*
+*.pem
+*.key
+secrets/
+
+# Test/Coverage
+/coverage/
+htmlcov/
 
 # Logs
 *.log
+/logs/
 
-# Local development
-.envrc
-.direnv/
+# Temp
+/tmp/
+*.tmp
+*.bak