Claude-Code-Workflow/ccw/docs-site/docs/commands/memory/memory-update-related.mdx

---
title: /memory:update-related
sidebar_label: /memory:update-related
sidebar_position: 2
description: Update CLAUDE.md for git-changed modules using batched execution
---

# /memory:update-related

Orchestrates context-aware CLAUDE.md updates for changed modules using batched agent execution with automatic tool fallback.

## Overview

The `/memory:update-related` command updates CLAUDE.md documentation only for modules affected by git changes, providing faster updates for daily development.

**Parameters**:
- `--tool <gemini|qwen|codex>`: Primary tool (default: gemini)

**Execution Flow**:
1. Change Detection → 2. Plan Presentation → 3. Batched Execution → 4. Safety Verification

## Features

- **Changed Module Detection** - Uses git diff to identify affected modules
- **Intelligent Batching** - Groups modules by depth (4 modules/agent)
- **Automatic Fallback** - gemini→qwen→codex on failure
- **Depth Sequential** - Process depths N→0, parallel batches within depth
- **Related Mode** - Update only changed modules and their parent contexts
- **Smart Filtering** - Auto-detects and skips tests/build/config/docs

## Usage

```bash
# Update git-changed modules
/memory:update-related

# Use specific tool
/memory:update-related --tool qwen

# Fallback to recent modules if no changes detected
/memory:update-related
```

## Tool Fallback Hierarchy

```javascript
--tool gemini  →  [gemini, qwen, codex]  // default
--tool qwen    →  [qwen, gemini, codex]
--tool codex   →  [codex, gemini, qwen]
```

**Trigger**: Non-zero exit code from update script

## Execution Modes

### Small Changes (<15 modules)
- **Direct parallel execution**
- Max 4 concurrent per depth
- No agent overhead

### Large Changes (>=15 modules)
- **Agent batch processing**
- 4 modules/agent
- Better resource utilization

## Execution Flow

### Phase 1: Change Detection & Analysis

```javascript
// Detect changed modules
Bash({command: "ccw tool exec detect_changed_modules '{\"format\":\"list\"}'", run_in_background: false});

// Cache git changes
Bash({command: "git add -A 2>/dev/null || true", run_in_background: false});
```

**Parse output** `depth:N|path:<PATH>|change:<TYPE>` to extract affected modules.

**Smart filter**: Auto-detect and skip tests/build/config/docs based on project tech stack.

**Fallback**: If no changes detected, use recent modules (first 10 by depth).

### Phase 2: Plan Presentation

- Parse `--tool` (default: gemini)
- Refresh code index for accurate change detection
- Detect changed modules via detect_changed_modules
- **Smart filter modules** (auto-detect tech stack, skip tests/build/config/docs)
- Cache git changes
- Apply fallback if no changes (recent 10 modules)
- Construct tool fallback order
- **Present filtered plan** with skip reasons and change types
- **Wait for y/n confirmation**

### Phase 3A: Direct Execution (<15 modules)

```javascript
for (let depth of sorted_depths.reverse()) {  // N → 0
  let batches = batch_modules(modules_by_depth[depth], 4);

  for (let batch of batches) {
    let parallel_tasks = batch.map(module => {
      return async () => {
        for (let tool of tool_order) {
          Bash({
            command: `cd ${module.path} && ccw tool exec update_module_claude '{"strategy":"single-layer","path":".","tool":"${tool}"}'`,
            run_in_background: false
          });
          if (bash_result.exit_code === 0) {
            report(`✅ ${module.path} updated with ${tool}`);
            return true;
          }
        }
        report(`❌ FAILED: ${module.path} failed all tools`);
        return false;
      };
    });
    await Promise.all(parallel_tasks.map(task => task()));
  }
}
```

### Phase 3B: Agent Execution (>=15 modules)

```javascript
let modules_by_depth = group_by_depth(changed_modules);
let tool_order = construct_tool_order(primary_tool);

for (let depth of sorted_depths.reverse()) {  // N → 0
  let batches = batch_modules(modules_by_depth[depth], 4);
  let worker_tasks = [];

  for (let batch of batches) {
    worker_tasks.push(
      Task(
        subagent_type="memory-bridge",
        description=`Update ${batch.length} modules at depth ${depth}`,
        prompt=generate_batch_worker_prompt(batch, tool_order, "related")
      )
    );
  }

  await parallel_execute(worker_tasks);  // Batches run in parallel
}
```

### Phase 4: Safety Verification

- Verify only CLAUDE.md files were modified
- Display git diff statistics
- Show summary of updates

## Strategy Selection

**Related Mode** uses `single-layer` strategy:
- Updates only the changed module's CLAUDE.md
- Faster than full update's multi-layer approach
- Suitable for iterative development

## Comparison with Full Update

| Aspect | Related Update | Full Update |
|--------|----------------|-------------|
| **Scope** | Changed modules only | All project modules |
| **Speed** | Fast (minutes) | Slower (10-30 min) |
| **Use case** | Daily development | Major refactoring |
| **Mode** | `"related"` | `"full"` |
| **Trigger** | After commits | After major changes |
| **Batching** | 4 modules/agent | 4 modules/agent |
| **Fallback** | gemini→qwen→codex | gemini→qwen→codex |
| **Complexity threshold** | <=15 modules | <=20 modules |
| **Strategy** | single-layer only | multi-layer for depth>=3 |

## Examples

### Basic Usage

```bash
# Update changed modules after commits
/memory:update-related

# Output:
# Detecting git changes...
# Found 8 changed modules
# Filtered: 3 test modules skipped
# Plan: Update 5 modules with gemini→qwen→codex fallback
# Confirm? (y/n): y
#
# Depth 3: [4/4] ✅
# Depth 2: [1/1] ✅
# Summary: 5/5 modules updated
# Safety check: Only CLAUDE.md modified ✅
```

### Tool Selection

```bash
# Use Qwen for faster updates
/memory:update-related --tool qwen

# Tries qwen → gemini → codex
```

### No Changes Detected

```bash
# When no git changes found
/memory:update-related

# Output:
# No git changes detected, using recent 10 modules
# Plan: Update recent modules
```

## Related Commands

- **/memory:update-full** - Update all project modules
- **/memory:load** - Load project context into memory
- **/memory:compact** - Compact session memory

## Notes

- **Direct execution** for <15 modules (faster, no agent overhead)
- **Agent execution** for >=15 modules (better resource utilization)
- **Smart filtering** automatically skips test/build/config directories
- **Change detection** uses git diff to find affected modules
- **Fallback** to recent modules when no changes detected
- **Safety check** ensures only CLAUDE.md files are modified
- **Git diff statistics** provide summary of changes