Initial commit: OpenClaw Skill Collection

6 custom skills (assign-task, dispatch-webhook, daily-briefing,
task-capture, qmd-brain, tts-voice) with technical documentation.
Compatible with Claude Code, OpenClaw, Codex CLI, and OpenCode.

openclaw-knowhow-skill/docs/infrastructure/install/nix.md

@@ -0,0 +1,39 @@
+# Nix Installation Documentation
+
+## Overview
+
+The documentation describes setting up OpenClaw using Nix, with the primary recommended method being **nix-openclaw**, a Home Manager module that provides a pre-configured environment.
+
+## Key Setup Method
+
+Users are directed to paste instructions into an AI agent, which should:
+
+1. Verify Determinate Nix installation
+2. Create a local flake configuration using provided templates
+3. Set up a Telegram bot with necessary credentials
+4. Configure secrets management
+5. Apply configuration via home-manager
+6. Verify the launchd service is running
+
+## What's Included
+
+The nix-openclaw setup provides Gateway + macOS app + tools (whisper, spotify, cameras) — all pinned with automatic service persistence and plugin configuration capabilities.
+
+## Nix Mode Runtime
+
+When `OPENCLAW_NIX_MODE=1` is enabled (automatic with nix-openclaw):
+
+- Configuration becomes deterministic and auto-install flows are disabled
+- State and configuration use explicit paths via environment variables
+- The macOS GUI app can enable this mode through system defaults
+- Missing dependencies trigger Nix-specific error messages
+
+## File Paths
+
+State and configuration directories are configurable:
+- `OPENCLAW_STATE_DIR` (default: `~/.openclaw`)
+- `OPENCLAW_CONFIG_PATH` (default: `$OPENCLAW_STATE_DIR/openclaw.json`)
+
+## Related Resources
+
+The documentation references the nix-openclaw GitHub repository as the authoritative source, alongside alternative installation methods for non-Nix and containerized setups.