feat: add llms.txt standard support for AI agent discoverability (#784)

Cherry-picked website/, scripts/generate-llms-full.sh, and deploy-docs.yml
from joyshmitz's PR. Fixed workflow to trigger on main branch instead of
docs/docusaurus-site.

Features:
- Docusaurus documentation site with llms.txt support
- Environment-variable driven config (defaults to steveyegge org)
- Automated llms-full.txt generation from docs
- GitHub Pages deployment workflow

Co-authored-by: joyshmitz <joyshmitz@users.noreply.github.com>

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Executed-By: beads/crew/dave
Rig: beads
Role: crew

website/docs/core-concepts/daemon.md

@@ -0,0 +1,165 @@
+---
+id: daemon
+title: Daemon Architecture
+sidebar_position: 3
+---
+
+# Daemon Architecture
+
+Beads runs a background daemon for auto-sync and performance.
+
+## Overview
+
+Each workspace gets its own daemon process:
+- Auto-starts on first `bd` command
+- Handles database ↔ JSONL synchronization
+- Listens on `.beads/bd.sock` (Unix) or `.beads/bd.pipe` (Windows)
+- Version checking prevents mismatches after upgrades
+
+## How It Works
+
+```
+CLI Command
+    ↓
+RPC to Daemon
+    ↓
+Daemon executes
+    ↓
+Auto-sync to JSONL (5s debounce)
+```
+
+Without daemon, commands access the database directly (slower, no auto-sync).
+
+## Managing Daemons
+
+```bash
+# List all running daemons
+bd daemons list
+bd daemons list --json
+
+# Check health and version mismatches
+bd daemons health
+bd daemons health --json
+
+# View daemon logs
+bd daemons logs . -n 100
+
+# Restart all daemons
+bd daemons killall
+bd daemons killall --json
+```
+
+## Daemon Info
+
+```bash
+bd info
+```
+
+Shows:
+- Daemon status (running/stopped)
+- Daemon version vs CLI version
+- Socket location
+- Auto-sync status
+
+## Disabling Daemon
+
+Use `--no-daemon` flag to bypass the daemon:
+
+```bash
+bd --no-daemon ready
+bd --no-daemon list
+```
+
+**When to disable:**
+- Git worktrees (required)
+- CI/CD pipelines
+- Resource-constrained environments
+- Debugging sync issues
+
+## Event-Driven Mode (Experimental)
+
+Event-driven mode replaces 5-second polling with instant reactivity:
+
+```bash
+# Enable globally
+export BEADS_DAEMON_MODE=events
+bd daemons killall  # Restart to apply
+```
+
+**Benefits:**
+- Less than 500ms latency (vs 5s polling)
+- ~60% less CPU usage
+- Instant sync after changes
+
+**How to verify:**
+```bash
+bd info | grep "daemon mode"
+```
+
+## Troubleshooting
+
+### Daemon not starting
+
+```bash
+# Check if socket exists
+ls -la .beads/bd.sock
+
+# Try direct mode
+bd --no-daemon info
+
+# Restart daemon
+bd daemons killall
+bd info
+```
+
+### Version mismatch
+
+After upgrading bd:
+
+```bash
+bd daemons killall
+bd info  # Should show matching versions
+```
+
+### Sync not happening
+
+```bash
+# Force sync
+bd sync
+
+# Check daemon logs
+bd daemons logs . -n 50
+
+# Verify git status
+git status .beads/
+```
+
+### Port/socket conflicts
+
+```bash
+# Kill all daemons
+bd daemons killall
+
+# Remove stale socket
+rm -f .beads/bd.sock
+
+# Restart
+bd info
+```
+
+## Configuration
+
+Daemon behavior can be configured:
+
+```bash
+# Set sync debounce interval
+bd config set daemon.sync_interval 10s
+
+# Disable auto-start
+bd config set daemon.auto_start false
+
+# Set log level
+bd config set daemon.log_level debug
+```
+
+See [Configuration](/reference/configuration) for all options.