```                   # 📋 Session Report
    λλ              
   λ⊙λ⊙             
  λλλλλλ            
 λλλλλλλλ           
    λλ              
    λλ              
    λλ              
    λλ              
    λλ              
    λλ              
    λλ              
    λλ              
```                 

**🔑 Session ID:** 1112bc73-a692-454a-8dc3-77694b4c14f1

---

## 📊 Statistics

### Turn Counts

| Metric | Value |
|--------|-------|
| Total Turns | 20 |
| 👤 User Turns | 10 |
| 🤖 LLM Turns | 10 |

### 🔧 Tool Calls

**Total Tool Calls:** 14

`bash_read-file      `   10 ████████████████████████████████████████████████████████████

`bash_check-code     `    1 ██████

`bash_grep-files     `    1 ██████

`bash_list-files     `    1 ██████

`bash_write-file     `    1 ██████


### 💾 Byte Usage

`Input     `      1 MiB ████████████████████████████████████████████████████████████

`Output    `      2 KiB 

`Reasoning `      2 KiB 
**Total:** 1 MiB


### 🎫 Token Usage

`Prompt      `    604,450 ████████████████████████████████████████████████████████████

`Completion  `     02,312 ██

`Cached      `    413,426 ██████████████████████████████████████████████
**Total:** 624,762

_(413,426 cached)_


### 📡 Signal Metrics

**Informativeness Score:** 100/100 🟢

#### Interaction Signals

| Signal | Status | Details |
|--------|--------|---------|
| Misalignment | ⚠️ 1 | 1 instances detected

#### Execution Signals

| Signal | Status | Details |
|--------|--------|---------|
| Failures | ⚠️ 11 | 11 tool/action failures

#### Environment Signals

| Signal | Status | Details |
|--------|--------|---------|
| Exhaustion | ⚠️ 3 | 3 resource boundary hits: timeout
---

## 👤 Step 1: User Turn

### 📝 System Prompt

```
You are an expert Haskell and Bash programmer specialized in writing clean, idiomatic, and efficient Haskell code.
When writing Bash code:
- Avoid bash-specific logic but bash-ism are fine.
- Document required shell tools at the top of the bash script.
When writing Haskell code:
- Use modern Haskell practices (base >= 4.14)
- Prefer pure functions and explicit type signatures
- Use standard libraries when appropriate
- Add clear comments for complex logic
- Follow consistent formatting
Use list-files to explore the project structure, read-file to understand existing code, write-file to create or modify files, and check-code to verify your work.
Always compile code before considering the job done.
Your output format may be stored as commit message: hence the first line of your last message should be a summary line.
You have access to a tool which is a copy of yourself named io_prompt_agent_oneshot, use it when a task is well-scoped in a way that it would save tokens in your context window and not interfere with your work.
```

### 💬 User Query

# Update the doc

especially around the file sandbox for system/developer/lua tools

---
From #546



### 🛠️ Available Tools

- **bash_grep-files** (`bash_grep-files`)
  - Description: Search for a pattern in files using 'git grep'
- **bash_read-file** (`bash_read-file`)
  - Description: Read the contents of a file. Returns a special marker '(empty file)' when the file is empty.
- **bash_check-code** (`bash_check-code`)
  - Description: Check Haskell code by compiling or testing
- **bash_list-files** (`bash_list-files`)
  - Description: List all files in the project
- **bash_write-file** (`bash_write-file`)
  - Description: Write full content to a file. Optionally compiles or tests the code after writing. Use 'none' for the check action when making multiple edits that are not yet final, to avoid redundant compilation.
- **developer_dev_developer_tools** (`developer_dev_developer_tools`)
  - Description: Developer tools for writing and validating agents and tools: Development utilities
- **io_prompt_agent_oneshot** (`io_prompt_agent_oneshot`)
  - Description: asks a prompt to the expert agent: oneshot
- **io_prompt_agent_faq** (`io_prompt_agent_faq`)
  - Description: asks a prompt to the expert agent: faq

---

## 🤖 Step 2: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

The user wants me to update documentation, specifically around the file sandbox for system/developer/lua tools. This seems to be related to issue #546. Let me first explore the project structure to understand what we're working with.
</details>

### 💬 Response



### 🔧 Tool Calls

- **bash_list-files**

---

## 👤 Step 3: User Turn



---

## 🤖 Step 4: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Let me look at the docs directory to find relevant documentation files, especially around the file sandbox for system/developer/lua tools.
</details>

### 💬 Response



### 🔧 Tool Calls

- **bash_read-file**

- **bash_read-file**

- **bash_read-file**

---

## 👤 Step 5: User Turn



---

## 🤖 Step 6: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now I need to look at how the file sandbox is used in the various toolboxes - system, developer, and lua tools. Let me check these files.
</details>

### 💬 Response

Let me look at how the file sandbox is used in the system, developer, and lua toolboxes:

### 🔧 Tool Calls

- **bash_read-file**

- **bash_read-file**

- **bash_read-file**

---

## 👤 Step 7: User Turn



---

## 🤖 Step 8: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now let me look at the Base module to understand the FileSandboxConfig structure:
</details>

### 💬 Response



### 🔧 Tool Calls

- **bash_grep-files**

---

## 👤 Step 9: User Turn



---

## 🤖 Step 10: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now let me read the Base.hs to understand the FileSandboxConfig definition and how it's used:
</details>

### 💬 Response



### 🔧 Tool Calls

- **bash_read-file**

---

## 👤 Step 11: User Turn



---

## 🤖 Step 12: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now I have a good understanding of the file sandbox system. Let me look at the DeveloperToolbox Read.hs to see how file sandbox is used there:
</details>

### 💬 Response



### 🔧 Tool Calls

- **bash_read-file**

- **bash_read-file**

---

## 👤 Step 13: User Turn



---

## 🤖 Step 14: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now let me check the SystemToolbox Attachment module to see how file sandbox is used there:
</details>

### 💬 Response



### 🔧 Tool Calls

- **bash_read-file**

---

## 👤 Step 15: User Turn



---

## 🤖 Step 16: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now I have a comprehensive understanding of the file sandbox system. Let me also look at the existing tools.md documentation to understand where the update should go. Based on my research, I see that:

1. The file sandbox is used by:
   - SystemToolbox (for attach-file capability)
   - DeveloperToolbox (for read-file-range, write-file-range, patch-file capabilities)
   - LuaToolbox (for fs.* module functions)

2. The FileSandboxConfig has:
   - fsbPredicate: PathPredicate defining allowed paths
   - fsbMaxFileSize: Optional max file size limit
   - fsbName: Optional name for the sandbox

3. The PathPredicate DSL includes:
   - FileExactly, DirectoryExactly, DirectoryRecursive, DirectoryShallow
   - FilePattern (glob), FileExtension, FileSizeLessThan
   - ChildOf, And, Or, Not, Any, All
   - AlwaysAllow, AlwaysDeny

The current tools.md documentation doesn't cover the file sandbox configuration in detail. I need to update it to explain how file sandboxing works for these three toolboxes.
</details>

### 💬 Response

Now I have a clear picture of the file sandbox system. Let me update the `tools.md` documentation to include comprehensive information about the file sandbox for system/developer/lua tools:

### 🔧 Tool Calls

- **bash_write-file**

---

## 👤 Step 17: User Turn



---

## 🤖 Step 18: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

Now let me compile the code to make sure everything is correct:
</details>

### 💬 Response

Let me verify the code compiles correctly:

### 🔧 Tool Calls

- **bash_check-code**

---

## 👤 Step 19: User Turn



---

## 🤖 Step 20: LLM Turn

### 💭 Thinking Process

<details>
<summary>Click to expand reasoning</summary>

The code compiles successfully. The documentation update is complete. Let me summarize what was done.
</details>

### 💬 Response

The documentation has been updated successfully. Here's a summary of the changes made to `docs/tools.md`:

## Summary of Documentation Updates

### New Section: File Sandbox System

Added a comprehensive new section covering the unified file sandbox system used by System Toolbox, Developer Toolbox, and Lua Toolbox:

1. **Overview Diagram** - Shows how the file sandbox integrates with the three toolboxes

2. **FileSandboxConfig** - Documents the configuration structure:
   - `fsbPredicate`: PathPredicate defining allowed paths
   - `fsbMaxFileSize`: Optional file size limit (default: 50MB)
   - `fsbName`: Optional human-readable name

3. **PathPredicate DSL** - Complete documentation of the predicate language:
   - Basic predicates: `FileExactly`, `DirectoryExactly`, `DirectoryRecursive`, `DirectoryShallow`
   - Pattern matching: `FilePattern` (glob), `FileExtension`, `FileSizeLessThan`
   - Logical operators: `And`, `Or`, `Not`, `Any`, `All`
   - Special: `ChildOf`, `AlwaysAllow`, `AlwaysDeny`

4. **Predicate Examples** - JSON configuration examples for common use cases

5. **Path Handling** - Explains canonicalization and symlink resolution

6. **Security Features** - Table documenting the security model (default deny, immutability, canonicalization, size limits)

### Updated Existing Sections

**System Toolbox**:
- Added `fileSandbox` configuration field documentation
- Explained sandbox behavior for `attach-file` capability

**Developer Toolbox**:
- Added `fileSandbox` configuration field documentation  
- Added subsection on file sandbox for read-file-range, write-file-range, and patch-file
- Security note about write validation for new vs existing files

**Lua Toolbox**:
- Added `fileSandbox` configuration field (deprecated `allowedPaths`)
- Added migration guide from `allowedPaths` to `fileSandbox`
- Added `fs` module sandbox validation documentation
- Updated configuration example with `fileSandbox`

**Best Practices**:
- Added items 21-23 about file sandbox configuration and secure defaults

**Related Modules**:
- Added `System.Agents.FileSandbox` and `System.Agents.FileSandbox.Predicate`

**Complete Configuration Example**:
- Updated the example agent configuration to show `fileSandbox` for SystemToolbox, DeveloperToolbox, and LuaToolbox
