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/merge-conflicts.md

@@ -0,0 +1,65 @@
+---
+sidebar_position: 3
+title: Merge Conflicts
+description: Resolve JSONL merge conflicts
+---
+
+# Merge Conflicts Recovery
+
+This runbook helps you resolve JSONL merge conflicts that occur during Git operations.
+
+## Symptoms
+
+- Git merge conflicts in `.beads/*.jsonl` files
+- `bd sync` fails with conflict errors
+- Different issue states between clones
+
+## Diagnosis
+
+```bash
+# Check for conflicted files
+git status
+
+# Look for conflict markers
+grep -l "<<<<<<" .beads/*.jsonl
+```
+
+## Solution
+
+:::warning
+JSONL files are append-only logs. Manual editing requires care.
+:::
+
+**Step 1:** Identify conflicted files
+```bash
+git diff --name-only --diff-filter=U
+```
+
+**Step 2:** For each conflicted JSONL file, keep both versions
+```bash
+# Accept both changes (append-only is safe)
+git checkout --ours .beads/issues.jsonl
+git add .beads/issues.jsonl
+```
+
+**Step 3:** Force rebuild to reconcile
+```bash
+bd doctor --fix
+```
+
+**Step 4:** Verify state
+```bash
+bd list
+bd status
+```
+
+**Step 5:** Complete the merge
+```bash
+git commit -m "Resolved beads merge conflicts"
+```
+
+## Prevention
+
+- Sync before and after Git operations
+- Use `bd sync` regularly
+- Avoid concurrent modifications from multiple clones