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/recovery/circular-dependencies.md

@@ -0,0 +1,62 @@
+---
+sidebar_position: 4
+title: Circular Dependencies
+description: Detect and break dependency cycles
+---
+
+# Circular Dependencies Recovery
+
+This runbook helps you detect and break circular dependency cycles in your issues.
+
+## Symptoms
+
+- "circular dependency detected" errors
+- `bd blocked` shows unexpected results
+- Issues that should be ready appear blocked
+
+## Diagnosis
+
+```bash
+# Check for blocked issues
+bd blocked
+
+# View dependencies for a specific issue
+bd show <issue-id>
+
+# List all dependencies
+bd dep tree
+```
+
+## Solution
+
+**Step 1:** Identify the cycle
+```bash
+bd blocked --verbose
+```
+
+**Step 2:** Map the dependency chain
+```bash
+bd show <issue-a>
+bd show <issue-b>
+# Follow the chain until you return to <issue-a>
+```
+
+**Step 3:** Determine which dependency to remove
+Consider: Which dependency is least critical to the workflow?
+
+**Step 4:** Remove the problematic dependency
+```bash
+bd dep remove <dependent-issue> <blocking-issue>
+```
+
+**Step 5:** Verify the cycle is broken
+```bash
+bd blocked
+bd ready
+```
+
+## Prevention
+
+- Think "X needs Y" not "X before Y" when adding dependencies
+- Use `bd blocked` after adding dependencies to check for cycles
+- Keep dependency chains shallow when possible