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/cli-reference/dependencies.md

@@ -0,0 +1,240 @@
+---
+id: dependencies
+title: Dependency Commands
+sidebar_position: 4
+---
+
+# Dependency Commands
+
+Commands for managing issue dependencies.
+
+## bd dep add
+
+Add a dependency between issues.
+
+```bash
+bd dep add <dependent> <dependency> [flags]
+```
+
+**Semantics:** `<dependent>` depends on `<dependency>` (dependency blocks dependent).
+
+**Flags:**
+```bash
+--type    Dependency type (blocks|related|discovered-from)
+--json    JSON output
+```
+
+**Examples:**
+```bash
+# bd-2 depends on bd-1 (bd-1 blocks bd-2)
+bd dep add bd-2 bd-1
+
+# Soft relationship
+bd dep add bd-2 bd-1 --type related
+
+# JSON output
+bd dep add bd-2 bd-1 --json
+```
+
+## bd dep remove
+
+Remove a dependency.
+
+```bash
+bd dep remove <dependent> <dependency> [flags]
+```
+
+**Examples:**
+```bash
+bd dep remove bd-2 bd-1
+bd dep remove bd-2 bd-1 --json
+```
+
+## bd dep tree
+
+Display dependency tree.
+
+```bash
+bd dep tree <id> [flags]
+```
+
+**Flags:**
+```bash
+--depth    Maximum depth to display
+--json     JSON output
+```
+
+**Examples:**
+```bash
+bd dep tree bd-42
+bd dep tree bd-42 --depth 3
+bd dep tree bd-42 --json
+```
+
+**Output:**
+```
+Dependency tree for bd-42:
+
+> bd-42: Add authentication [P2] (open)
+  > bd-41: Create API [P2] (open)
+    > bd-40: Set up database [P1] (closed)
+```
+
+## bd dep cycles
+
+Detect circular dependencies.
+
+```bash
+bd dep cycles [flags]
+```
+
+**Flags:**
+```bash
+--json    JSON output
+```
+
+**Examples:**
+```bash
+bd dep cycles
+bd dep cycles --json
+```
+
+## bd ready
+
+Show issues with no blockers.
+
+```bash
+bd ready [flags]
+```
+
+**Flags:**
+```bash
+--priority    Filter by priority
+--type        Filter by type
+--label       Filter by label
+--json        JSON output
+```
+
+**Examples:**
+```bash
+bd ready
+bd ready --priority 1
+bd ready --type bug
+bd ready --json
+```
+
+**Output:**
+```
+Ready work (3 issues with no blockers):
+
+1. [P1] bd-40: Set up database
+2. [P2] bd-45: Write tests
+3. [P3] bd-46: Update docs
+```
+
+## bd blocked
+
+Show blocked issues and their blockers.
+
+```bash
+bd blocked [flags]
+```
+
+**Flags:**
+```bash
+--json    JSON output
+```
+
+**Examples:**
+```bash
+bd blocked
+bd blocked --json
+```
+
+**Output:**
+```
+Blocked issues (2 issues):
+
+bd-42: Add authentication
+  Blocked by: bd-41 (open)
+
+bd-41: Create API
+  Blocked by: bd-40 (in_progress)
+```
+
+## bd relate
+
+Create a soft relationship between issues.
+
+```bash
+bd relate <id1> <id2> [flags]
+```
+
+**Examples:**
+```bash
+bd relate bd-42 bd-43
+bd relate bd-42 bd-43 --json
+```
+
+## bd duplicate
+
+Mark an issue as duplicate.
+
+```bash
+bd duplicate <id> --of <canonical> [flags]
+```
+
+**Examples:**
+```bash
+bd duplicate bd-43 --of bd-42
+bd duplicate bd-43 --of bd-42 --json
+```
+
+## bd supersede
+
+Mark an issue as superseding another.
+
+```bash
+bd supersede <old> --with <new> [flags]
+```
+
+**Examples:**
+```bash
+bd supersede bd-42 --with bd-50
+bd supersede bd-42 --with bd-50 --json
+```
+
+## Understanding Dependencies
+
+### Blocking vs Non-blocking
+
+| Type | Blocks Ready Queue | Use Case |
+|------|-------------------|----------|
+| `blocks` | Yes | Hard dependency |
+| `parent-child` | No | Epic/subtask hierarchy |
+| `discovered-from` | No | Track origin |
+| `related` | No | Soft link |
+| `duplicates` | No | Mark duplicate |
+| `supersedes` | No | Version chain |
+
+### Dependency Direction
+
+```bash
+# bd-2 depends on bd-1
+# Meaning: bd-1 must complete before bd-2 can start
+bd dep add bd-2 bd-1
+
+# After bd-1 closes:
+bd close bd-1
+bd ready  # bd-2 now appears
+```
+
+### Avoiding Cycles
+
+```bash
+# Check before adding complex dependencies
+bd dep cycles
+
+# If cycle detected, remove one dependency
+bd dep remove bd-A bd-B
+```