Initial commit: pod setup and shell scripts

Add create_pod_langflow.sh (Langflow + Langfuse Podman pod with pinned
image versions), set-colors.sh, .gitignore, and local .claude config.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,50 @@
+# --- OS / filesystem cruft ---
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+Thumbs.db
+desktop.ini
+
+# --- Editor / IDE ---
+*~
+*.swp
+*.swo
+.vscode/
+.idea/
+*.sublime-workspace
+
+# --- Backups & patch leftovers ---
+*.bak
+*.bak-*
+*.bak[0-9]*
+*.backup
+*.orig
+*.rej
+*.tmp
+
+# --- Logs ---
+*.log
+
+# --- Secrets / credentials (never commit) ---
+.env
+.env.*
+*.pem
+*.key
+id_rsa
+id_ed25519
+*_secret*
+*.secret
+credentials
+secrets/
+
+# --- Python (scripts may bring these) ---
+__pycache__/
+*.py[cod]
+.venv/
+venv/
+
+# --- Local scratch ---
+/tmp/
+scratchpad/