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/workflows/index.md

@@ -0,0 +1,94 @@
+---
+id: index
+title: Workflows
+sidebar_position: 1
+---
+
+# Workflows
+
+Beads provides powerful workflow primitives for complex, multi-step processes.
+
+## Chemistry Metaphor
+
+Beads uses a molecular chemistry metaphor:
+
+| Phase | Storage | Synced | Use Case |
+|-------|---------|--------|----------|
+| **Proto** (solid) | Built-in | N/A | Reusable templates |
+| **Mol** (liquid) | `.beads/` | Yes | Persistent work |
+| **Wisp** (vapor) | `.beads-wisp/` | No | Ephemeral operations |
+
+## Core Concepts
+
+### Formulas
+
+Declarative workflow templates in TOML or JSON:
+
+```toml
+formula = "feature-workflow"
+version = 1
+type = "workflow"
+
+[[steps]]
+id = "design"
+title = "Design the feature"
+type = "human"
+
+[[steps]]
+id = "implement"
+title = "Implement the feature"
+needs = ["design"]
+```
+
+### Molecules
+
+Work graphs with parent-child relationships:
+- Created by instantiating formulas with `bd pour`
+- Steps have dependencies (`needs`)
+- Progress tracked via issue status
+
+### Gates
+
+Async coordination primitives:
+- **Human gates** - Wait for human approval
+- **Timer gates** - Wait for duration
+- **GitHub gates** - Wait for PR merge, CI, etc.
+
+### Wisps
+
+Ephemeral operations that don't sync to git:
+- Created with `bd wisp`
+- Stored in `.beads-wisp/` (gitignored)
+- Auto-expire after completion
+
+## Workflow Commands
+
+| Command | Description |
+|---------|-------------|
+| `bd pour` | Instantiate formula as molecule |
+| `bd wisp` | Create ephemeral wisp |
+| `bd mol list` | List molecules |
+| `bd pin` | Pin work to agent |
+| `bd hook` | Show pinned work |
+
+## Simple Example
+
+```bash
+# Create a release workflow
+bd pour release --var version=1.0.0
+
+# View the molecule
+bd mol show release-1.0.0
+
+# Work through steps
+bd update release-1.0.0.1 --status in_progress
+bd close release-1.0.0.1
+# Next step becomes ready...
+```
+
+## Navigation
+
+- [Molecules](/workflows/molecules) - Work graphs and execution
+- [Formulas](/workflows/formulas) - Declarative templates
+- [Gates](/workflows/gates) - Async coordination
+- [Wisps](/workflows/wisps) - Ephemeral operations