Abstraction for browser automation tasks

examples/planner-executor/README.md

@@ -3,11 +3,16 @@
 This directory contains examples for the `PlannerExecutorAgent`, a two-tier agent
 architecture with separate Planner (7B+) and Executor (3B-7B) models.
 
+> **See also**: [Full User Manual](../../docs/PLANNER_EXECUTOR_AGENT.md) for comprehensive documentation.
+
 ## Examples
 
 | File | Description |
 |------|-------------|
 | `minimal_example.py` | Basic usage with OpenAI models |
+| `stepwise_example.py` | Stepwise (ReAct-style) planning for unfamiliar sites |
+| `automation_task_example.py` | Using AutomationTask for flexible task definition |
+| `captcha_example.py` | CAPTCHA handling with different solvers |
 | `local_models_example.py` | Using local HuggingFace/MLX models |
 | `custom_config_example.py` | Custom configuration (escalation, retry, vision) |
 | `tracing_example.py` | Full tracing integration for Predicate Studio |
@@ -23,6 +28,7 @@ architecture with separate Planner (7B+) and Executor (3B-7B) models.
 │  • Generates JSON plan      │  • Executes each step         │
 │  • Includes predicates      │  • Snapshot-first approach    │
 │  • Handles replanning       │  • Vision fallback            │
+│  • Stepwise (ReAct) mode    │                               │
 └─────────────────────────────────────────────────────────────┘
                               │
                               ▼
@@ -34,6 +40,50 @@ architecture with separate Planner (7B+) and Executor (3B-7B) models.
 └─────────────────────────────────────────────────────────────┘
 ```
 
+## Planning Modes
+
+### Upfront Planning (Default)
+
+The planner generates a complete multi-step plan before execution. Use for well-known sites.
+
+```python
+result = await agent.run(runtime, task)
+```
+
+### Stepwise Planning (ReAct-style)
+
+The planner decides one action at a time based on current page state. **Recommended for unfamiliar sites.**
+
+```python
+from predicate.agents import StepwisePlanningConfig
+
+config = PlannerExecutorConfig(
+    stepwise=StepwisePlanningConfig(
+        max_steps=30,
+        action_history_limit=5,
+    ),
+)
+
+agent = PlannerExecutorAgent(planner=planner, executor=executor, config=config)
+result = await agent.run_stepwise(runtime, task)
+```
+
+### Auto-Fallback (Default Behavior)
+
+By default, `agent.run()` automatically falls back to stepwise planning when upfront planning fails:
+
+```python
+# Default: auto_fallback_to_stepwise=True
+result = await agent.run(runtime, task)
+
+# Check if fallback was used
+if result.fallback_used:
+    print("Automatically switched to stepwise planning")
+
+# Disable auto-fallback
+config = PlannerExecutorConfig(auto_fallback_to_stepwise=False)
+```
+
 ## Quick Start
 
 ```python
@@ -139,3 +189,117 @@ agent = PlannerExecutorAgent(
 
 tracer.close()  # Upload trace to Studio
 ```
+
+## AutomationTask
+
+Use `AutomationTask` for flexible task definition with built-in recovery:
+
+```python
+from predicate.agents import AutomationTask, TaskCategory
+
+# Basic task
+task = AutomationTask(
+    task_id="search-products",
+    starting_url="https://amazon.com",
+    task="Search for laptops and add the first result to cart",
+    category=TaskCategory.TRANSACTION,
+    enable_recovery=True,
+)
+
+# Add success criteria
+task = task.with_success_criteria(
+    {"predicate": "url_contains", "args": ["/cart"]},
+    {"predicate": "exists", "args": [".cart-item"]},
+)
+
+result = await agent.run(runtime, task)
+```
+
+## Permissions
+
+Grant browser permissions to prevent permission dialogs from interrupting automation:
+
+```python
+from predicate import AsyncPredicateBrowser
+
+# Grant permissions to avoid "Allow this site to access your location?" dialogs
+permission_policy = {
+    "auto_grant": [
+        "geolocation",      # Store locators, local inventory
+        "notifications",    # Push notification prompts
+        "clipboard-read",   # Paste coupon codes
+        "clipboard-write",  # Copy product info
+    ],
+    "geolocation": {"latitude": 47.6762, "longitude": -122.2057},  # Mock location
+}
+
+async with AsyncPredicateBrowser(
+    permission_policy=permission_policy,
+) as browser:
+    # Run automation without permission dialogs
+    ...
+```
+
+## CAPTCHA Handling
+
+Configure CAPTCHA solving with different strategies:
+
+```python
+from predicate.agents.browser_agent import CaptchaConfig
+from predicate.captcha_strategies import HumanHandoffSolver, ExternalSolver
+
+# Human handoff: wait for manual solve
+config = PlannerExecutorConfig(
+    captcha=CaptchaConfig(
+        policy="callback",
+        handler=HumanHandoffSolver(timeout_ms=120_000),
+    ),
+)
+
+# External solver: integrate with 2Captcha, CapSolver, etc.
+def solve_captcha(ctx):
+    # Call your CAPTCHA solving service
+    pass
+
+config = PlannerExecutorConfig(
+    captcha=CaptchaConfig(
+        policy="callback",
+        handler=ExternalSolver(resolver=solve_captcha),
+    ),
+)
+```
+
+## Modal/Drawer Dismissal
+
+Automatic modal and drawer dismissal is enabled by default in both upfront and stepwise planning modes.
+
+After successful CLICK actions, the agent automatically detects and dismisses blocking overlays:
+
+```python
+from predicate.agents import PlannerExecutorConfig, ModalDismissalConfig
+
+# Default: enabled with common patterns (works in both modes)
+config = PlannerExecutorConfig()
+
+# Custom patterns for non-English sites
+config = PlannerExecutorConfig(
+    modal=ModalDismissalConfig(
+        dismiss_patterns=(
+            "no thanks", "not now", "close", "skip",  # English
+            "nein danke", "schließen",  # German
+            "no gracias", "cerrar",  # Spanish
+        ),
+    ),
+)
+
+# Disable modal dismissal
+config = PlannerExecutorConfig(
+    modal=ModalDismissalConfig(enabled=False),
+)
+```
+
+This handles common e-commerce scenarios like:
+- Amazon's "Add Protection Plan" drawer after Add to Cart
+- Cookie consent banners
+- Newsletter signup popups
+- Promotional overlays