feat(skills): Add hierarchical structure with references and templates

skills/agent-browser/SKILL.md

@@ -250,3 +250,32 @@ agent-browser highlight @e1              # Highlight element
 agent-browser trace start                # Start recording trace
 agent-browser trace stop trace.zip       # Stop and save trace
 ```
+
+## Deep-dive documentation
+
+For detailed patterns and best practices, see:
+
+| Reference | Description |
+|-----------|-------------|
+| [references/snapshot-refs.md](references/snapshot-refs.md) | Ref lifecycle, invalidation rules, troubleshooting |
+| [references/session-management.md](references/session-management.md) | Parallel sessions, state persistence, concurrent scraping |
+| [references/authentication.md](references/authentication.md) | Login flows, OAuth, 2FA handling, state reuse |
+| [references/video-recording.md](references/video-recording.md) | Recording workflows for debugging and documentation |
+| [references/proxy-support.md](references/proxy-support.md) | Proxy configuration, geo-testing, rotating proxies |
+
+## Ready-to-use templates
+
+Executable workflow scripts for common patterns:
+
+| Template | Description |
+|----------|-------------|
+| [templates/form-automation.sh](templates/form-automation.sh) | Form filling with validation |
+| [templates/authenticated-session.sh](templates/authenticated-session.sh) | Login once, reuse state |
+| [templates/capture-workflow.sh](templates/capture-workflow.sh) | Content extraction with screenshots |
+
+Usage:
+```bash
+./templates/form-automation.sh https://example.com/form
+./templates/authenticated-session.sh https://app.example.com/login
+./templates/capture-workflow.sh https://example.com ./output
+```

skills/agent-browser/references/authentication.md

@@ -0,0 +1,188 @@
+# Authentication Patterns
+
+Patterns for handling login flows, session persistence, and authenticated browsing.
+
+## Basic Login Flow
+
+```bash
+# Navigate to login page
+agent-browser open https://app.example.com/login
+agent-browser wait --load networkidle
+
+# Get form elements
+agent-browser snapshot -i
+# Output: @e1 [input type="email"], @e2 [input type="password"], @e3 [button] "Sign In"
+
+# Fill credentials
+agent-browser fill @e1 "user@example.com"
+agent-browser fill @e2 "password123"
+
+# Submit
+agent-browser click @e3
+agent-browser wait --load networkidle
+
+# Verify login succeeded
+agent-browser get url  # Should be dashboard, not login
+```
+
+## Saving Authentication State
+
+After logging in, save state for reuse:
+
+```bash
+# Login first (see above)
+agent-browser open https://app.example.com/login
+agent-browser snapshot -i
+agent-browser fill @e1 "user@example.com"
+agent-browser fill @e2 "password123"
+agent-browser click @e3
+agent-browser wait --url "**/dashboard"
+
+# Save authenticated state
+agent-browser state save ./auth-state.json
+```
+
+## Restoring Authentication
+
+Skip login by loading saved state:
+
+```bash
+# Load saved auth state
+agent-browser state load ./auth-state.json
+
+# Navigate directly to protected page
+agent-browser open https://app.example.com/dashboard
+
+# Verify authenticated
+agent-browser snapshot -i
+```
+
+## OAuth / SSO Flows
+
+For OAuth redirects:
+
+```bash
+# Start OAuth flow
+agent-browser open https://app.example.com/auth/google
+
+# Handle redirects automatically
+agent-browser wait --url "**/accounts.google.com**"
+agent-browser snapshot -i
+
+# Fill Google credentials
+agent-browser fill @e1 "user@gmail.com"
+agent-browser click @e2  # Next button
+agent-browser wait 2000
+agent-browser snapshot -i
+agent-browser fill @e3 "password"
+agent-browser click @e4  # Sign in
+
+# Wait for redirect back
+agent-browser wait --url "**/app.example.com**"
+agent-browser state save ./oauth-state.json
+```
+
+## Two-Factor Authentication
+
+Handle 2FA with manual intervention:
+
+```bash
+# Login with credentials
+agent-browser open https://app.example.com/login --headed  # Show browser
+agent-browser snapshot -i
+agent-browser fill @e1 "user@example.com"
+agent-browser fill @e2 "password123"
+agent-browser click @e3
+
+# Wait for user to complete 2FA manually
+echo "Complete 2FA in the browser window..."
+agent-browser wait --url "**/dashboard" --timeout 120000
+
+# Save state after 2FA
+agent-browser state save ./2fa-state.json
+```
+
+## HTTP Basic Auth
+
+For sites using HTTP Basic Authentication:
+
+```bash
+# Set credentials before navigation
+agent-browser set credentials username password
+
+# Navigate to protected resource
+agent-browser open https://protected.example.com/api
+```
+
+## Cookie-Based Auth
+
+Manually set authentication cookies:
+
+```bash
+# Set auth cookie
+agent-browser cookies set session_token "abc123xyz"
+
+# Navigate to protected page
+agent-browser open https://app.example.com/dashboard
+```
+
+## Token Refresh Handling
+
+For sessions with expiring tokens:
+
+```bash
+#!/bin/bash
+# Wrapper that handles token refresh
+
+STATE_FILE="./auth-state.json"
+
+# Try loading existing state
+if [[ -f "$STATE_FILE" ]]; then
+    agent-browser state load "$STATE_FILE"
+    agent-browser open https://app.example.com/dashboard
+
+    # Check if session is still valid
+    URL=$(agent-browser get url)
+    if [[ "$URL" == *"/login"* ]]; then
+        echo "Session expired, re-authenticating..."
+        # Perform fresh login
+        agent-browser snapshot -i
+        agent-browser fill @e1 "$USERNAME"
+        agent-browser fill @e2 "$PASSWORD"
+        agent-browser click @e3
+        agent-browser wait --url "**/dashboard"
+        agent-browser state save "$STATE_FILE"
+    fi
+else
+    # First-time login
+    agent-browser open https://app.example.com/login
+    # ... login flow ...
+fi
+```
+
+## Security Best Practices
+
+1. **Never commit state files** - They contain session tokens
+   ```bash
+   echo "*.auth-state.json" >> .gitignore
+   ```
+
+2. **Use environment variables for credentials**
+   ```bash
+   agent-browser fill @e1 "$APP_USERNAME"
+   agent-browser fill @e2 "$APP_PASSWORD"
+   ```
+
+3. **Clean up after automation**
+   ```bash
+   agent-browser cookies clear
+   rm -f ./auth-state.json
+   ```
+
+4. **Use short-lived sessions for CI/CD**
+   ```bash
+   # Don't persist state in CI
+   agent-browser open https://app.example.com/login
+   # ... login and perform actions ...
+   agent-browser close  # Session ends, nothing persisted
+   ```

skills/agent-browser/references/proxy-support.md

@@ -0,0 +1,175 @@
+# Proxy Support
+
+Configure proxy servers for browser automation, useful for geo-testing, rate limiting avoidance, and corporate environments.
+
+## Basic Proxy Configuration
+
+Set proxy via environment variable before starting:
+
+```bash
+# HTTP proxy
+export HTTP_PROXY="http://proxy.example.com:8080"
+agent-browser open https://example.com
+
+# HTTPS proxy
+export HTTPS_PROXY="https://proxy.example.com:8080"
+agent-browser open https://example.com
+
+# Both
+export HTTP_PROXY="http://proxy.example.com:8080"
+export HTTPS_PROXY="http://proxy.example.com:8080"
+agent-browser open https://example.com
+```
+
+## Authenticated Proxy
+
+For proxies requiring authentication:
+
+```bash
+# Include credentials in URL
+export HTTP_PROXY="http://username:password@proxy.example.com:8080"
+agent-browser open https://example.com
+```
+
+## SOCKS Proxy
+
+```bash
+# SOCKS5 proxy
+export ALL_PROXY="socks5://proxy.example.com:1080"
+agent-browser open https://example.com
+
+# SOCKS5 with auth
+export ALL_PROXY="socks5://user:pass@proxy.example.com:1080"
+agent-browser open https://example.com
+```
+
+## Proxy Bypass
+
+Skip proxy for specific domains:
+
+```bash
+# Bypass proxy for local addresses
+export NO_PROXY="localhost,127.0.0.1,.internal.company.com"
+agent-browser open https://internal.company.com  # Direct connection
+agent-browser open https://external.com          # Via proxy
+```
+
+## Common Use Cases
+
+### Geo-Location Testing
+
+```bash
+#!/bin/bash
+# Test site from different regions using geo-located proxies
+
+PROXIES=(
+    "http://us-proxy.example.com:8080"
+    "http://eu-proxy.example.com:8080"
+    "http://asia-proxy.example.com:8080"
+)
+
+for proxy in "${PROXIES[@]}"; do
+    export HTTP_PROXY="$proxy"
+    export HTTPS_PROXY="$proxy"
+
+    region=$(echo "$proxy" | grep -oP '^\w+-\w+')
+    echo "Testing from: $region"
+
+    agent-browser --session "$region" open https://example.com
+    agent-browser --session "$region" screenshot "./screenshots/$region.png"
+    agent-browser --session "$region" close
+done
+```
+
+### Rotating Proxies for Scraping
+
+```bash
+#!/bin/bash
+# Rotate through proxy list to avoid rate limiting
+
+PROXY_LIST=(
+    "http://proxy1.example.com:8080"
+    "http://proxy2.example.com:8080"
+    "http://proxy3.example.com:8080"
+)
+
+URLS=(
+    "https://site.com/page1"
+    "https://site.com/page2"
+    "https://site.com/page3"
+)
+
+for i in "${!URLS[@]}"; do
+    proxy_index=$((i % ${#PROXY_LIST[@]}))
+    export HTTP_PROXY="${PROXY_LIST[$proxy_index]}"
+    export HTTPS_PROXY="${PROXY_LIST[$proxy_index]}"
+
+    agent-browser open "${URLS[$i]}"
+    agent-browser get text body > "output-$i.txt"
+    agent-browser close
+
+    sleep 1  # Polite delay
+done
+```
+
+### Corporate Network Access
+
+```bash
+#!/bin/bash
+# Access internal sites via corporate proxy
+
+export HTTP_PROXY="http://corpproxy.company.com:8080"
+export HTTPS_PROXY="http://corpproxy.company.com:8080"
+export NO_PROXY="localhost,127.0.0.1,.company.com"
+
+# External sites go through proxy
+agent-browser open https://external-vendor.com
+
+# Internal sites bypass proxy
+agent-browser open https://intranet.company.com
+```
+
+## Verifying Proxy Connection
+
+```bash
+# Check your apparent IP
+agent-browser open https://httpbin.org/ip
+agent-browser get text body
+# Should show proxy's IP, not your real IP
+```
+
+## Troubleshooting
+
+### Proxy Connection Failed
+
+```bash
+# Test proxy connectivity first
+curl -x http://proxy.example.com:8080 https://httpbin.org/ip
+
+# Check if proxy requires auth
+export HTTP_PROXY="http://user:pass@proxy.example.com:8080"
+```
+
+### SSL/TLS Errors Through Proxy
+
+Some proxies perform SSL inspection. If you encounter certificate errors:
+
+```bash
+# For testing only - not recommended for production
+agent-browser open https://example.com --ignore-https-errors
+```
+
+### Slow Performance
+
+```bash
+# Use proxy only when necessary
+export NO_PROXY="*.cdn.com,*.static.com"  # Direct CDN access
+```
+
+## Best Practices
+
+1. **Use environment variables** - Don't hardcode proxy credentials
+2. **Set NO_PROXY appropriately** - Avoid routing local traffic through proxy
+3. **Test proxy before automation** - Verify connectivity with simple requests
+4. **Handle proxy failures gracefully** - Implement retry logic for unstable proxies
+5. **Rotate proxies for large scraping jobs** - Distribute load and avoid bans