diff --git a/README.md b/README.md
index 71fc775..b7d9c71 100644
--- a/README.md
+++ b/README.md
@@ -1,138 +1,248 @@
 # 🤖 MacPilot
 
-Programmatic macOS control for AI agents.
+Programmatic macOS control for AI agents. Everything a human can do via keyboard + mouse, MacPilot can do programmatically.
 
-Current version: **0.4.0**
+Current version: **0.4.1**
 
-## Build
+## Quick Start
 
 ```bash
+# Clone and build
 git clone https://github.com/adhikjoshi/macpilot.git
 cd macpilot
 swift build -c release
+
+# Build .app bundle (recommended — needed for Screen Recording permission)
+bash scripts/build-app.sh
+
+# Install to a location
+cp -R MacPilot.app /path/to/your/tools/
 ```
 
-Binary output:
+### Permissions Required
+1. **Accessibility** — System Settings → Privacy & Security → Accessibility → Add MacPilot.app
+2. **Screen Recording** — System Settings → Privacy & Security → Screen Recording → Add MacPilot.app
 
+### Verify Permissions
 ```bash
-.build/release/macpilot
+MacPilot ax-check --json
+# Should show: "trusted": true
 ```
 
-## Build `.app` bundle (recommended for Accessibility permissions)
+## ⚠️ Important: Screenshot Invocation
+
+When calling MacPilot from a background process (e.g., AI agent, cron, daemon), **screenshots require the .app identity** for Screen Recording permission:
 
 ```bash
-bash scripts/build-app.sh
+# ✅ For screenshots (uses .app's Screen Recording permission)
+open -n -W -a /path/to/MacPilot.app --args screenshot --output /tmp/screen.png --json
+
+# ✅ For all other commands (direct binary is fine)
+MP=/path/to/MacPilot.app/Contents/MacOS/MacPilot
+$MP window list --json
+$MP keyboard type "hello" --json
+$MP mouse click 100 200 --json
 ```
 
-This builds release binary, assembles `MacPilot.app`, and ad-hoc signs it.
-
-### App Bundle Structure
+## Commands
 
-- `MacPilot.app/Contents/MacOS/MacPilot`
-- `MacPilot.app/Contents/Info.plist`
-- `MacPilot.app/Contents/Resources/`
+All commands support `--json` for structured output.
 
-Signing command used by script:
+### Mouse
+```bash
+MacPilot mouse move 300 300 --json
+MacPilot mouse click 100 200 --json
+MacPilot mouse click 100 200 --right --json       # right click
+MacPilot mouse doubleclick 100 200 --json
+MacPilot mouse drag 100 200 300 400 --json
+MacPilot mouse scroll up 5 --json
+MacPilot mouse scroll down 10 --json
+```
 
+### Keyboard
 ```bash
-codesign --force --deep --sign - MacPilot.app
+MacPilot keyboard type "Hello World" --json
+MacPilot keyboard key return --json
+MacPilot keyboard key escape --json
+MacPilot keyboard key tab --json
+MacPilot keyboard key space --json
+MacPilot keyboard key delete --json
+MacPilot keyboard key "cmd+c" --json              # keyboard shortcuts
+MacPilot keyboard key "cmd+shift+3" --json         # screenshot shortcut
+MacPilot keyboard key "ctrl+right" --json          # switch Space
 ```
 
-## Commands
+### Screenshot
+```bash
+# Full screen
+MacPilot screenshot --output /tmp/screen.png --json
 
-### Mouse
+# Region capture (x,y,width,height)
+MacPilot screenshot --region 100,100,800,600 --output /tmp/region.png --json
+
+# Note: From background processes, use:
+open -n -W -a MacPilot.app --args screenshot --output /tmp/screen.png --json
+```
 
+### App Management
 ```bash
-macpilot click 100 200
-macpilot doubleclick 100 200
-macpilot rightclick 100 200
-macpilot move 100 200
-macpilot drag 100 200 300 400
-macpilot scroll up 5
-macpilot scroll down 10
+MacPilot app open Safari --json              # open by name
+MacPilot app open com.apple.TextEdit --json  # open by bundle ID
+MacPilot app list --json                     # list running apps
+MacPilot app quit Safari --json              # graceful quit
+MacPilot app quit Safari --force --json      # force quit
+# Note: System processes (Finder, Dock, etc.) are protected and cannot be quit
 ```
 
-### Keyboard
+### Window Management
+Both positional and flag syntax supported:
+```bash
+MacPilot window list --json                        # list all windows
+MacPilot window focus Safari --json                # positional
+MacPilot window focus --app Safari --json          # flag syntax
+MacPilot window move Safari 100 100 --json         # positional: app x y
+MacPilot window move --app Safari --x 100 --y 100 --json
+MacPilot window resize Safari 1200 800 --json      # positional: app w h
+MacPilot window resize --app Safari --width 1200 --height 800 --json
+MacPilot window minimize Safari --json
+MacPilot window fullscreen Safari --json           # toggle fullscreen
+MacPilot window close Safari --json
+```
 
+### UI / Accessibility
 ```bash
-macpilot type "Hello"
-macpilot key enter
-macpilot key cmd+c
+MacPilot ui list --json                    # list UI elements of frontmost app
+MacPilot ui find "Submit" --json           # find element by name
+MacPilot ui click "Submit" --json          # click element by accessibility label
+MacPilot ui tree --depth 3 --json          # element hierarchy (alias: --max-depth)
 ```
 
-### Screenshot
+### Shell
+```bash
+MacPilot shell run "ls -la" --json
+MacPilot shell run "whoami" --json
+MacPilot shell run "sw_vers" --json
+```
 
+### Chain Commands (multi-step automation)
 ```bash
-macpilot screenshot
-macpilot screenshot --output /tmp/screen.png
-macpilot screenshot --region 0,0,500,500
-macpilot screenshot --window "Google Chrome"
+# Navigate in browser: address bar → type URL → press enter
+MacPilot chain "cmd+l" "type:https://google.com" "return" --json
+
+# With delays between steps
+MacPilot chain "cmd+l" "type:https://google.com" "sleep:500" "return" --delay 200 --json
+
+# Chain syntax:
+#   "key_name"          → press key (return, escape, tab, etc.)
+#   "cmd+key"           → keyboard shortcut
+#   "type:text"         → type text
+#   "sleep:ms"          → pause for milliseconds
 ```
 
-### App
+### Chrome
+```bash
+MacPilot chrome open-url "https://example.com" --json
+MacPilot chrome new-tab "https://example.com" --json
+MacPilot chrome extensions --json
+MacPilot chrome dev-mode --json
+```
 
+### Space (Desktop) Management
+Both positional and flag syntax:
 ```bash
-macpilot app open "Google Chrome"
-macpilot app open com.apple.TextEdit
-macpilot app focus Chrome
-macpilot app list
-macpilot app quit TextEdit
-macpilot app quit TextEdit --force
+MacPilot space list --json
+MacPilot space switch right --json              # positional
+MacPilot space switch --direction right --json  # flag syntax
+MacPilot space switch left --json
+MacPilot space switch 1 --json                  # by index
+MacPilot space switch --index 1 --json
 ```
 
-### Window
+### Dialog / File Picker
+```bash
+MacPilot dialog navigate /tmp --json
+MacPilot dialog select myfile.txt --json
+```
 
+### Clipboard
 ```bash
-macpilot window list
-macpilot window list --all-spaces
-macpilot window focus --app "Terminal"
-macpilot window focus --app "Google Chrome" --title "Docs"
-macpilot window resize --app "Terminal" --width 1200 --height 800
-macpilot window move --app "Terminal" --x 100 --y 100
-macpilot window minimize --app "Terminal"
-macpilot window close --app "Terminal"
-macpilot window fullscreen --app "Terminal"
+MacPilot clipboard get --json
+MacPilot clipboard set "hello" --json
 ```
 
-### UI
+### Wait
+```bash
+MacPilot wait element "Submit" --timeout 10 --json
+MacPilot wait window "Chrome" --timeout 10 --json
+MacPilot wait seconds 1.5 --json
+```
 
+### System
 ```bash
-macpilot ui list
-macpilot ui find "Submit"
-macpilot ui click "Submit"
-macpilot ui tree
+MacPilot ax-check --json          # verify Accessibility permission
+MacPilot --version                # show version
 ```
 
-### Other
+## Best Practices for AI Agents
+
+### Validate → Act → Verify (MANDATORY)
+
+Never fire commands blindly. Always:
+
+1. **PRE-CHECK** state before acting
+2. **ACT** — run your command
+3. **POST-CHECK** — verify it worked
 
 ```bash
-macpilot clipboard get
-macpilot clipboard set "hello"
-macpilot dialog navigate /path/to/file
-macpilot shell run "echo hi"
-macpilot wait element "Submit" --timeout 10
-macpilot wait window "Chrome" --timeout 10
-macpilot wait seconds 1.5
-macpilot ax-check --json
-macpilot chain "sleep:10" "key:enter"
-macpilot chrome tabs --json
-macpilot run app list --json
+# BAD (fire and pray)
+$MP app open Safari
+$MP chain "cmd+l" "type:url" "return"
+$MP screenshot
+
+# GOOD (validate → act → verify)
+$MP app list --json                        # PRE: is Safari running?
+$MP app open Safari --json; sleep 3        # ACT: open it
+$MP window list --json                     # POST: is window visible?
+$MP window focus Safari --json             # PRE: ensure focus
+$MP chain "cmd+l" "type:url" "return"      # ACT: navigate
+sleep 3
+open -n -W -a MacPilot.app --args screenshot --output /tmp/result.png  # POST: verify
 ```
 
-## JSON output
+### Key Rules
+- **One app at a time** — finish with one before starting another
+- **Always confirm focus** before typing/clicking
+- **Sleep 2-3s** after opening apps (they need time to load)
+- **Clean up** — close apps/tabs you opened
+- **Check window list** before window operations
 
-Most commands support `--json`.
+## Build
 
 ```bash
-macpilot app list --json
-macpilot window list --json
+swift build                  # debug build
+swift build -c release       # release build
+bash scripts/build-app.sh    # build .app bundle with ad-hoc signing
+bash Tests/run_tests.sh      # run integration tests
 ```
 
+## CI / CD
+
+- **CI**: Runs on every PR and merge to main (build + test + .app verification)
+- **Release**: Push a tag (`git tag v0.5.0 && git push --tags`) to auto-create a GitHub Release with .app zip + standalone binary
+
+## Safety
+
+MacPilot has built-in safety limits:
+- **Protected processes**: Finder, Dock, WindowServer, SystemUIServer, launchd, kernel_task cannot be quit
+- **Protected paths**: System directories cannot be modified via shell
+- **Shell safety**: Dangerous commands are blocked
+
 ## Requirements
 
-- macOS 13+
-- Accessibility permission
-- Screen Recording permission (screenshots)
+- macOS 13+ (Ventura or later)
+- Swift 5.9+
+- Accessibility permission (required for all commands)
+- Screen Recording permission (required for screenshots)
 
 ## License