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/reference/configuration.md

@@ -0,0 +1,161 @@
+---
+id: configuration
+title: Configuration
+sidebar_position: 1
+---
+
+# Configuration
+
+Complete configuration reference for beads.
+
+## Configuration Locations
+
+1. **Project config**: `.beads/config.toml` (highest priority)
+2. **User config**: `~/.beads/config.toml`
+3. **Environment variables**: `BEADS_*`
+4. **Command-line flags**: (highest priority)
+
+## Managing Configuration
+
+```bash
+# Get config value
+bd config get import.orphan_handling
+
+# Set config value
+bd config set import.orphan_handling allow
+
+# List all config
+bd config list
+
+# Reset to default
+bd config reset import.orphan_handling
+```
+
+## Configuration Options
+
+### Database
+
+```toml
+[database]
+path = ".beads/beads.db"     # Database file location
+```
+
+### ID Generation
+
+```toml
+[id]
+prefix = "bd"                 # Issue ID prefix
+hash_length = 4               # Hash length in IDs
+```
+
+### Import
+
+```toml
+[import]
+orphan_handling = "allow"     # allow|resurrect|skip|strict
+dedupe_on_import = false      # Run duplicate detection after import
+```
+
+| Mode | Behavior |
+|------|----------|
+| `allow` | Import orphans without validation (default) |
+| `resurrect` | Restore deleted parents as tombstones |
+| `skip` | Skip orphaned children with warning |
+| `strict` | Fail if parent missing |
+
+### Export
+
+```toml
+[export]
+path = ".beads/issues.jsonl"  # Export file location
+auto_export = true            # Auto-export on changes
+debounce_seconds = 5          # Debounce interval
+```
+
+### Daemon
+
+```toml
+[daemon]
+auto_start = true             # Auto-start daemon
+sync_interval = "5s"          # Sync check interval
+log_level = "info"            # debug|info|warn|error
+mode = "poll"                 # poll|events (experimental)
+```
+
+### Git
+
+```toml
+[git]
+auto_commit = true            # Auto-commit on sync
+auto_push = true              # Auto-push on sync
+commit_message = "bd sync"    # Default commit message
+```
+
+### Hooks
+
+```toml
+[hooks]
+pre_commit = true             # Enable pre-commit hook
+post_merge = true             # Enable post-merge hook
+pre_push = true               # Enable pre-push hook
+```
+
+### Deletions
+
+```toml
+[deletions]
+retention_days = 30           # Keep deletion records for N days
+prune_on_sync = true          # Auto-prune old records
+```
+
+## Environment Variables
+
+| Variable | Description |
+|----------|-------------|
+| `BEADS_DB` | Database path |
+| `BEADS_NO_DAEMON` | Disable daemon |
+| `BEADS_DAEMON_MODE` | Daemon mode (poll/events) |
+| `BEADS_LOG_LEVEL` | Log level |
+| `BEADS_CONFIG` | Config file path |
+
+## Per-Command Override
+
+```bash
+# Override database
+bd --db /tmp/test.db list
+
+# Disable daemon for single command
+bd --no-daemon create "Task"
+```
+
+## Example Configuration
+
+`.beads/config.toml`:
+
+```toml
+[id]
+prefix = "myproject"
+hash_length = 6
+
+[import]
+orphan_handling = "resurrect"
+dedupe_on_import = true
+
+[daemon]
+auto_start = true
+sync_interval = "10s"
+mode = "events"
+
+[git]
+auto_commit = true
+auto_push = true
+
+[deletions]
+retention_days = 90
+```
+
+## Viewing Active Configuration
+
+```bash
+bd info --json | jq '.config'
+```