From ee0649bccdf00d5d5524d2629331cce1a1401f41 Mon Sep 17 00:00:00 2001
From: bl-ue <54780737+bl-ue@users.noreply.github.com>
Date: Sun, 11 Jan 2026 09:30:06 -0700
Subject: [PATCH] First attempt
---
.../1-high-level-system-architecture.md | 77 ++++++++
architecture/2-agent-delegation-flow.md | 101 +++++++++++
architecture/3-tool-ecosystem.md | 133 ++++++++++++++
architecture/4-conversation-lifecycle.md | 137 +++++++++++++++
architecture/5-plan-mode-flow.md | 165 +++++++++++++++++
architecture/6-slash-commands-and-skills.md | 166 ++++++++++++++++++
6 files changed, 779 insertions(+)
create mode 100644 architecture/1-high-level-system-architecture.md
create mode 100644 architecture/2-agent-delegation-flow.md
create mode 100644 architecture/3-tool-ecosystem.md
create mode 100644 architecture/4-conversation-lifecycle.md
create mode 100644 architecture/5-plan-mode-flow.md
create mode 100644 architecture/6-slash-commands-and-skills.md
diff --git a/architecture/1-high-level-system-architecture.md b/architecture/1-high-level-system-architecture.md
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--- /dev/null
+++ b/architecture/1-high-level-system-architecture.md
@@ -0,0 +1,77 @@
+# High-Level System Architecture
+
+This diagram shows the overall structure of Claude Code's prompt system.
+
+```mermaid
+flowchart TB
+ subgraph Core["Core System"]
+ Main["Main System Prompt
Behavior, tone, policies,
task handling"]
+ click Main href "../system-prompts/system-prompt-main-system-prompt.md" "Main System Prompt"
+ end
+
+ subgraph Conditional["Conditional Additions"]
+ Security["Security Policy"]
+ Learning["Learning Mode"]
+ Git["Git Status"]
+ Scratchpad["Scratchpad Directory"]
+ MCP["MCP CLI"]
+ Chrome["Chrome Browser"]
+ click Learning href "../system-prompts/system-prompt-learning-mode.md" "Learning Mode"
+ click Git href "../system-prompts/system-prompt-git-status.md" "Git Status"
+ click Scratchpad href "../system-prompts/system-prompt-scratchpad-directory.md" "Scratchpad Directory"
+ click MCP href "../system-prompts/system-prompt-mcp-cli.md" "MCP CLI"
+ click Chrome href "../system-prompts/system-prompt-claude-in-chrome-browser-automation.md" "Chrome Browser Automation"
+ end
+
+ subgraph Tools["Built-in Tools"]
+ direction LR
+ FileTools["File Operations
Read, Write, Edit,
Glob, Grep"]
+ ExecTools["Execution
Bash"]
+ WebTools["Web
Search, Fetch"]
+ PlanTools["Planning
TodoWrite,
Enter/Exit PlanMode"]
+ InteractTools["Interaction
Task, Skill,
AskUserQuestion"]
+ end
+
+ subgraph Agents["Sub-agents"]
+ direction LR
+ Explore["Explore
Read-only search"]
+ Plan["Plan
Read-only design"]
+ TaskAgent["Task Agent
Autonomous work"]
+ click Explore href "../system-prompts/agent-prompt-explore.md" "Explore Agent"
+ click Plan href "../system-prompts/agent-prompt-plan-mode-enhanced.md" "Plan Mode Agent"
+ click TaskAgent href "../system-prompts/agent-prompt-task-tool.md" "Task Tool Agent"
+ end
+
+ subgraph Utilities["Utility Agents"]
+ direction LR
+ Summary["Conversation
Summarization"]
+ Session["Session Title
& Branch Gen"]
+ Hooks["Hooks"]
+ Sentiment["User Sentiment
Analysis"]
+ click Summary href "../system-prompts/agent-prompt-conversation-summarization.md" "Conversation Summarization"
+ click Session href "../system-prompts/agent-prompt-session-title-and-branch-generation.md" "Session Title Generation"
+ click Hooks href "../system-prompts/agent-prompt-agent-hook.md" "Agent Hook"
+ click Sentiment href "../system-prompts/agent-prompt-user-sentiment-analysis.md" "User Sentiment Analysis"
+ end
+
+ Main --> Conditional
+ Main --> Tools
+ Main --> Agents
+ Main --> Utilities
+
+ style Core fill:#e1f5fe
+ style Tools fill:#f3e5f5
+ style Agents fill:#e8f5e9
+ style Utilities fill:#fff3e0
+ style Conditional fill:#fce4ec
+```
+
+## Components
+
+| Component | Description | Key Prompts |
+|-----------|-------------|-------------|
+| **Core System** | The main system prompt that defines Claude Code's behavior, tone, and policies | [Main System Prompt](../system-prompts/system-prompt-main-system-prompt.md) |
+| **Conditional Additions** | Context-dependent prompt sections added based on environment and configuration | [Learning Mode](../system-prompts/system-prompt-learning-mode.md), [Git Status](../system-prompts/system-prompt-git-status.md), [MCP CLI](../system-prompts/system-prompt-mcp-cli.md) |
+| **Built-in Tools** | Tool descriptions injected when tools are available | See [Tool Ecosystem](./3-tool-ecosystem.md) |
+| **Sub-agents** | Specialized agents spawned for complex tasks | [Explore](../system-prompts/agent-prompt-explore.md), [Plan](../system-prompts/agent-prompt-plan-mode-enhanced.md), [Task](../system-prompts/agent-prompt-task-tool.md) |
+| **Utility Agents** | Background agents for session management and analysis | [Summarization](../system-prompts/agent-prompt-conversation-summarization.md), [Session Title](../system-prompts/agent-prompt-session-title-and-branch-generation.md) |
diff --git a/architecture/2-agent-delegation-flow.md b/architecture/2-agent-delegation-flow.md
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+# Agent Delegation Flow
+
+This diagram shows how the main Claude Code agent decides when to handle tasks directly versus delegating to specialized sub-agents.
+
+```mermaid
+flowchart TB
+ User["π€ User Request"]
+ Main["Main Agent
Main System Prompt"]
+ click Main href "../system-prompts/system-prompt-main-system-prompt.md" "Main System Prompt"
+
+ Decision{{"Task Complexity?"}}
+
+ subgraph Direct["Direct Tool Use"]
+ direction TB
+ Read["ReadFile"]
+ Write["Write"]
+ Edit["Edit"]
+ Bash["Bash"]
+ Glob["Glob"]
+ Grep["Grep"]
+ Web["WebSearch /
WebFetch"]
+ click Read href "../system-prompts/tool-description-readfile.md" "ReadFile Tool"
+ click Write href "../system-prompts/tool-description-write.md" "Write Tool"
+ click Edit href "../system-prompts/tool-description-edit.md" "Edit Tool"
+ click Bash href "../system-prompts/tool-description-bash.md" "Bash Tool"
+ click Glob href "../system-prompts/tool-description-glob.md" "Glob Tool"
+ click Grep href "../system-prompts/tool-description-grep.md" "Grep Tool"
+ click Web href "../system-prompts/tool-description-websearch.md" "WebSearch Tool"
+ end
+
+ subgraph TaskTool["Task Tool Delegation"]
+ Task["Task Tool"]
+ click Task href "../system-prompts/tool-description-task.md" "Task Tool"
+
+ subgraph SubAgents["Sub-agent Types"]
+ Explore["Explore Agent
Read-only codebase search
Tools: Glob, Grep, Read, Bash"]
+ Plan["Plan Agent
Read-only architecture design
Tools: Glob, Grep, Read, Bash"]
+ Custom["Custom Agents
User-defined via config"]
+ click Explore href "../system-prompts/agent-prompt-explore.md" "Explore Agent"
+ click Plan href "../system-prompts/agent-prompt-plan-mode-enhanced.md" "Plan Mode Agent"
+ end
+ end
+
+ TaskPrompt["Task Agent Prompt
Given to spawned agent"]
+ ExtraNotes["Extra Notes
Absolute paths, formatting"]
+ click TaskPrompt href "../system-prompts/agent-prompt-task-tool.md" "Task Agent Prompt"
+ click ExtraNotes href "../system-prompts/agent-prompt-task-tool-extra-notes.md" "Task Tool Extra Notes"
+
+ Result["π Result returned to Main Agent"]
+ Response["π¬ Response to User"]
+
+ User --> Main
+ Main --> Decision
+
+ Decision -->|"Simple / Specific"| Direct
+ Decision -->|"Complex / Multi-step"| TaskTool
+
+ Task --> SubAgents
+ SubAgents --> TaskPrompt
+ TaskPrompt --> ExtraNotes
+
+ Direct --> Response
+ ExtraNotes --> Result
+ Result --> Main
+ Main --> Response
+
+ style Direct fill:#e8f5e9
+ style TaskTool fill:#e1f5fe
+ style SubAgents fill:#f3e5f5
+```
+
+## When to Use Direct Tools vs. Task Delegation
+
+| Scenario | Approach | Reason |
+|----------|----------|--------|
+| Read a specific file | **Direct** (ReadFile) | Known path, simple operation |
+| Search for "class Foo" | **Direct** (Grep) | Specific needle query |
+| Find all TypeScript files | **Direct** (Glob) | Simple pattern match |
+| "Where are errors handled?" | **Task** (Explore) | Requires codebase exploration |
+| "What's the architecture?" | **Task** (Explore) | Needs broad understanding |
+| Design a new feature | **Task** (Plan) | Requires analysis and design |
+| Run tests after code changes | **Task** (Custom) | Multi-step autonomous work |
+
+## Sub-agent Characteristics
+
+### Explore Agent
+- **Purpose**: Fast, read-only codebase search
+- **Constraints**: Cannot create, modify, or delete files
+- **Tools**: Glob, Grep, ReadFile, Bash (read-only commands only)
+- **Prompt**: [agent-prompt-explore.md](../system-prompts/agent-prompt-explore.md)
+
+### Plan Agent
+- **Purpose**: Architecture analysis and implementation planning
+- **Constraints**: Read-only, outputs a plan with critical files
+- **Tools**: Glob, Grep, ReadFile, Bash (read-only commands only)
+- **Prompt**: [agent-prompt-plan-mode-enhanced.md](../system-prompts/agent-prompt-plan-mode-enhanced.md)
+
+### Task Agent (Generic)
+- **Purpose**: Autonomous execution of delegated tasks
+- **Prompt**: [agent-prompt-task-tool.md](../system-prompts/agent-prompt-task-tool.md)
+- **Extra Notes**: [agent-prompt-task-tool-extra-notes.md](../system-prompts/agent-prompt-task-tool-extra-notes.md)
diff --git a/architecture/3-tool-ecosystem.md b/architecture/3-tool-ecosystem.md
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--- /dev/null
+++ b/architecture/3-tool-ecosystem.md
@@ -0,0 +1,133 @@
+# Tool Ecosystem
+
+This diagram maps all of Claude Code's built-in tools, organized by category.
+
+```mermaid
+flowchart TB
+ subgraph FileOps["π File Operations"]
+ direction TB
+ Read["ReadFile
Read file contents"]
+ Write["Write
Create/overwrite files"]
+ Edit["Edit
String replacement in files"]
+ Glob["Glob
Pattern-based file search"]
+ Grep["Grep
Content search with regex"]
+ Notebook["NotebookEdit
Jupyter cell editing"]
+ click Read href "../system-prompts/tool-description-readfile.md" "ReadFile"
+ click Write href "../system-prompts/tool-description-write.md" "Write"
+ click Edit href "../system-prompts/tool-description-edit.md" "Edit"
+ click Glob href "../system-prompts/tool-description-glob.md" "Glob"
+ click Grep href "../system-prompts/tool-description-grep.md" "Grep"
+ click Notebook href "../system-prompts/tool-description-notebookedit.md" "NotebookEdit"
+ end
+
+ subgraph Execution["β‘ Execution"]
+ direction TB
+ Bash["Bash
Shell command execution"]
+ BashGit["Git & PR Instructions
Commit and PR creation"]
+ BashSandbox["Sandbox Note
Security sandboxing"]
+ click Bash href "../system-prompts/tool-description-bash.md" "Bash"
+ click BashGit href "../system-prompts/tool-description-bash-git-commit-and-pr-creation-instructions.md" "Git Instructions"
+ click BashSandbox href "../system-prompts/tool-description-bash-sandbox-note.md" "Sandbox Note"
+
+ Bash --> BashGit
+ Bash --> BashSandbox
+ end
+
+ subgraph Web["π Web"]
+ direction TB
+ WebSearch["WebSearch
Real-time web search"]
+ WebFetch["WebFetch
Fetch URL contents"]
+ click WebSearch href "../system-prompts/tool-description-websearch.md" "WebSearch"
+ click WebFetch href "../system-prompts/tool-description-webfetch.md" "WebFetch"
+ end
+
+ subgraph Planning["π Planning & Tasks"]
+ direction TB
+ Todo["TodoWrite
Task list management"]
+ Enter["EnterPlanMode
Start planning mode"]
+ Exit["ExitPlanMode
Present plan for approval"]
+ ExitV2["ExitPlanMode v2
Enhanced plan dialog"]
+ click Todo href "../system-prompts/tool-description-todowrite.md" "TodoWrite"
+ click Enter href "../system-prompts/tool-description-enterplanmode.md" "EnterPlanMode"
+ click Exit href "../system-prompts/tool-description-exitplanmode.md" "ExitPlanMode"
+ click ExitV2 href "../system-prompts/tool-description-exitplanmode-v2.md" "ExitPlanMode v2"
+ end
+
+ subgraph Interaction["π¬ Interaction"]
+ direction TB
+ Task["Task
Launch sub-agents"]
+ Skill["Skill
Execute skills"]
+ Ask["AskUserQuestion
Clarification prompts"]
+ click Task href "../system-prompts/tool-description-task.md" "Task"
+ click Skill href "../system-prompts/tool-description-skill.md" "Skill"
+ click Ask href "../system-prompts/tool-description-askuserquestion.md" "AskUserQuestion"
+ end
+
+ subgraph Specialized["π§ Specialized"]
+ direction TB
+ Computer["Computer
Chrome browser automation"]
+ LSP["LSP
Language Server Protocol"]
+ MCP["MCPSearch
MCP server discovery"]
+ MCPTools["MCPSearch
with available tools"]
+ click Computer href "../system-prompts/tool-description-computer.md" "Computer"
+ click LSP href "../system-prompts/tool-description-lsp.md" "LSP"
+ click MCP href "../system-prompts/tool-description-mcpsearch.md" "MCPSearch"
+ click MCPTools href "../system-prompts/tool-description-mcpsearch-with-available-tools.md" "MCPSearch with tools"
+
+ MCP --> MCPTools
+ end
+
+ style FileOps fill:#e8f5e9
+ style Execution fill:#fff3e0
+ style Web fill:#e1f5fe
+ style Planning fill:#f3e5f5
+ style Interaction fill:#fce4ec
+ style Specialized fill:#f5f5f5
+```
+
+## Tool Quick Reference
+
+### File Operations
+| Tool | Purpose | Prompt File |
+|------|---------|-------------|
+| **ReadFile** | Read file contents with optional offset/limit | [tool-description-readfile.md](../system-prompts/tool-description-readfile.md) |
+| **Write** | Create or overwrite entire files | [tool-description-write.md](../system-prompts/tool-description-write.md) |
+| **Edit** | Exact string replacement in existing files | [tool-description-edit.md](../system-prompts/tool-description-edit.md) |
+| **Glob** | Find files by pattern (e.g., `**/*.ts`) | [tool-description-glob.md](../system-prompts/tool-description-glob.md) |
+| **Grep** | Search file contents with regex | [tool-description-grep.md](../system-prompts/tool-description-grep.md) |
+| **NotebookEdit** | Edit Jupyter notebook cells | [tool-description-notebookedit.md](../system-prompts/tool-description-notebookedit.md) |
+
+### Execution
+| Tool | Purpose | Prompt File |
+|------|---------|-------------|
+| **Bash** | Execute shell commands | [tool-description-bash.md](../system-prompts/tool-description-bash.md) |
+| β³ Git Instructions | How to create commits and PRs | [tool-description-bash-git-commit-and-pr-creation-instructions.md](../system-prompts/tool-description-bash-git-commit-and-pr-creation-instructions.md) |
+| β³ Sandbox Note | Security sandboxing info | [tool-description-bash-sandbox-note.md](../system-prompts/tool-description-bash-sandbox-note.md) |
+
+### Web
+| Tool | Purpose | Prompt File |
+|------|---------|-------------|
+| **WebSearch** | Search the web for real-time information | [tool-description-websearch.md](../system-prompts/tool-description-websearch.md) |
+| **WebFetch** | Fetch content from specific URLs | [tool-description-webfetch.md](../system-prompts/tool-description-webfetch.md) |
+
+### Planning & Tasks
+| Tool | Purpose | Prompt File |
+|------|---------|-------------|
+| **TodoWrite** | Create and manage task lists | [tool-description-todowrite.md](../system-prompts/tool-description-todowrite.md) |
+| **EnterPlanMode** | Enter planning mode for complex tasks | [tool-description-enterplanmode.md](../system-prompts/tool-description-enterplanmode.md) |
+| **ExitPlanMode** | Present plan for user approval | [tool-description-exitplanmode.md](../system-prompts/tool-description-exitplanmode.md) |
+| **ExitPlanMode v2** | Enhanced plan dialog | [tool-description-exitplanmode-v2.md](../system-prompts/tool-description-exitplanmode-v2.md) |
+
+### Interaction
+| Tool | Purpose | Prompt File |
+|------|---------|-------------|
+| **Task** | Launch specialized sub-agents | [tool-description-task.md](../system-prompts/tool-description-task.md) |
+| **Skill** | Execute predefined skills | [tool-description-skill.md](../system-prompts/tool-description-skill.md) |
+| **AskUserQuestion** | Ask user for clarification | [tool-description-askuserquestion.md](../system-prompts/tool-description-askuserquestion.md) |
+
+### Specialized
+| Tool | Purpose | Prompt File |
+|------|---------|-------------|
+| **Computer** | Chrome browser automation | [tool-description-computer.md](../system-prompts/tool-description-computer.md) |
+| **LSP** | Language Server Protocol operations | [tool-description-lsp.md](../system-prompts/tool-description-lsp.md) |
+| **MCPSearch** | Search for MCP servers | [tool-description-mcpsearch.md](../system-prompts/tool-description-mcpsearch.md) |
diff --git a/architecture/4-conversation-lifecycle.md b/architecture/4-conversation-lifecycle.md
new file mode 100644
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--- /dev/null
+++ b/architecture/4-conversation-lifecycle.md
@@ -0,0 +1,137 @@
+# Conversation Lifecycle
+
+This diagram shows how different prompts are used throughout a Claude Code session, from start to finish.
+
+```mermaid
+sequenceDiagram
+ autonumber
+ participant User
+ participant CC as Claude Code
+ participant Main as Main Agent
+ participant Tools as Tools
+ participant SubAgent as Sub-agents
+ participant Utility as Utility Agents
+
+ Note over CC: Session Start
+
+ rect rgb(225, 245, 254)
+ Note over Main: System Prompt Assembly
+ CC->>Main: Load Main System Prompt
+ CC->>Main: Inject Tool Descriptions
+ CC->>Main: Add Conditional Sections
(Git Status, Learning Mode, etc.)
+ end
+
+ User->>CC: Initial message
+ CC->>Main: Process request
+
+ rect rgb(232, 245, 233)
+ Note over Main,Tools: Work Phase
+ loop Task Execution
+ Main->>Tools: Use tools (Read, Write, Bash, etc.)
+ Tools-->>Main: Results
+
+ alt Complex task
+ Main->>SubAgent: Delegate via Task tool
+ Note over SubAgent: Agent-specific prompt loaded
+ SubAgent-->>Main: Results
+ end
+ end
+ end
+
+ rect rgb(255, 243, 224)
+ Note over Utility: Context Management
+ alt Context grows large
+ CC->>Utility: Trigger Summarization
+ Note over Utility: Conversation Summarization prompt
+ Utility-->>CC: Compressed context
+ end
+ end
+
+ User->>CC: Follow-up messages
+ Note over Main: Continue with context
+
+ rect rgb(252, 228, 236)
+ Note over Utility: Session End
+ CC->>Utility: Generate session title
+ Note over Utility: Session Title & Branch prompt
+ Utility-->>CC: Title and branch name
+ end
+```
+
+## Lifecycle Phases
+
+### 1. Session Initialization
+
+When a Claude Code session starts, the system prompt is assembled from multiple pieces:
+
+```mermaid
+flowchart LR
+ subgraph Assembly["System Prompt Assembly"]
+ direction TB
+ Base["Main System Prompt"]
+ Tools["Tool Descriptions"]
+ Cond["Conditional Sections"]
+
+ Base --> Final["Complete System Prompt"]
+ Tools --> Final
+ Cond --> Final
+ end
+
+ click Base href "../system-prompts/system-prompt-main-system-prompt.md" "Main System Prompt"
+```
+
+**Key Prompts:**
+- [Main System Prompt](../system-prompts/system-prompt-main-system-prompt.md) - Core behavior and policies
+- [Git Status](../system-prompts/system-prompt-git-status.md) - Repository state (if in git repo)
+- [Learning Mode](../system-prompts/system-prompt-learning-mode.md) - Educational mode (if enabled)
+- [Scratchpad Directory](../system-prompts/system-prompt-scratchpad-directory.md) - Temp file location (if configured)
+
+### 2. Work Phase
+
+During active work, the main agent uses tools and may delegate to sub-agents:
+
+| Action | Prompts Used |
+|--------|-------------|
+| Direct tool use | Individual [tool descriptions](./3-tool-ecosystem.md) |
+| Codebase exploration | [Explore Agent](../system-prompts/agent-prompt-explore.md) via Task |
+| Planning | [Plan Agent](../system-prompts/agent-prompt-plan-mode-enhanced.md) via Task |
+| Task management | [TodoWrite](../system-prompts/tool-description-todowrite.md) |
+
+### 3. Context Management
+
+As conversation grows, summarization preserves important context:
+
+```mermaid
+flowchart LR
+ Long["Long Conversation"] --> Trigger{"Context
too large?"}
+ Trigger -->|Yes| Summary["Summarization Agent"]
+ Summary --> Compact["Compacted Context"]
+ Compact --> Continue["Continue Session"]
+ Trigger -->|No| Continue
+
+ click Summary href "../system-prompts/agent-prompt-conversation-summarization.md" "Summarization"
+```
+
+**Key Prompts:**
+- [Conversation Summarization](../system-prompts/agent-prompt-conversation-summarization.md) - Standard summarization
+- [Summarization with Additional Instructions](../system-prompts/agent-prompt-conversation-summarization-with-additional-instructions.md) - Custom summarization rules
+
+### 4. Session End
+
+When a session concludes, utility agents generate metadata:
+
+**Key Prompts:**
+- [Session Title & Branch Generation](../system-prompts/agent-prompt-session-title-and-branch-generation.md) - Creates descriptive title and git branch name
+- [Session Notes Template](../system-prompts/agent-prompt-session-notes-template.md) - Structure for session notes
+- [Session Notes Update](../system-prompts/agent-prompt-session-notes-update-instructions.md) - How to update notes during session
+
+## Prompt Injection Points
+
+| Phase | Injection Point | Prompt Type |
+|-------|----------------|-------------|
+| Start | System message | Main + conditionals |
+| Tool call | Tool schema | Tool descriptions |
+| Sub-agent spawn | New context | Agent prompts |
+| Context compact | Background | Summarization prompt |
+| Plan mode | System reminder | Plan mode reminders |
+| Session end | Background | Title/branch generation |
diff --git a/architecture/5-plan-mode-flow.md b/architecture/5-plan-mode-flow.md
new file mode 100644
index 0000000..767455e
--- /dev/null
+++ b/architecture/5-plan-mode-flow.md
@@ -0,0 +1,165 @@
+# Plan Mode Flow
+
+This diagram shows the planning subsystemβhow Claude Code enters, operates in, and exits plan mode.
+
+```mermaid
+stateDiagram-v2
+ [*] --> NormalMode: Session Start
+
+ NormalMode --> PlanMode: Shift+Tab OR
EnterPlanMode tool
+
+ state PlanMode {
+ direction TB
+ [*] --> Exploring
+ Exploring --> Designing: Understanding complete
+ Designing --> ProposingPlan: Design ready
+
+ state Exploring {
+ direction LR
+ ReadFiles: Read relevant files
+ SearchCode: Search codebase
+ AnalyzeArch: Analyze architecture
+ }
+
+ state Designing {
+ direction LR
+ IdentifyPatterns: Identify patterns
+ ConsiderTradeoffs: Consider trade-offs
+ PlanSteps: Plan implementation steps
+ }
+ }
+
+ PlanMode --> ExitDecision: ExitPlanMode tool
+
+ state ExitDecision <>
+ ExitDecision --> Implementation: User approves
+ ExitDecision --> PlanMode: User requests changes
+
+ Implementation --> NormalMode: Work complete
+ NormalMode --> PlanMode: Re-enter (Shift+Tab)
+
+ NormalMode --> [*]: Session End
+```
+
+## Plan Mode Entry Points
+
+```mermaid
+flowchart LR
+ subgraph Triggers["Entry Triggers"]
+ Keyboard["β¨οΈ Shift+Tab"]
+ Tool["π§ EnterPlanMode tool"]
+ Complex["π€ Complex task detected"]
+ end
+
+ subgraph Entry["Plan Mode Activation"]
+ Enter["EnterPlanMode"]
+ Reminder["Plan Mode Reminder
injected into context"]
+ end
+
+ Triggers --> Entry
+
+ click Enter href "../system-prompts/tool-description-enterplanmode.md" "EnterPlanMode"
+ click Reminder href "../system-prompts/system-reminder-plan-mode-is-active.md" "Plan Mode Reminder"
+```
+
+**Key Prompts:**
+- [EnterPlanMode Tool](../system-prompts/tool-description-enterplanmode.md) - Tool description for entering plan mode
+- [Plan Mode Active Reminder](../system-prompts/system-reminder-plan-mode-is-active.md) - System reminder injected when plan mode is active
+
+## Plan Mode Operation
+
+While in plan mode, Claude Code operates in **read-only** mode with specific capabilities:
+
+```mermaid
+flowchart TB
+ subgraph Capabilities["β
Allowed in Plan Mode"]
+ Read["Read files"]
+ Search["Search codebase"]
+ Analyze["Analyze patterns"]
+ Design["Design solutions"]
+ Parallel["Spawn parallel
exploration agents"]
+ end
+
+ subgraph Restricted["β Restricted in Plan Mode"]
+ Write["Write files"]
+ Edit["Edit files"]
+ Execute["Execute commands
(except read-only)"]
+ Create["Create anything"]
+ end
+
+ PlanAgent["Plan Mode Agent"]
+ PlanAgent --> Capabilities
+ PlanAgent -.->|blocked| Restricted
+
+ click PlanAgent href "../system-prompts/agent-prompt-plan-mode-enhanced.md" "Plan Mode Agent"
+```
+
+**Key Prompts:**
+- [Plan Mode Agent](../system-prompts/agent-prompt-plan-mode-enhanced.md) - Enhanced planning prompt
+- [Plan Mode for Subagents](../system-prompts/system-reminder-plan-mode-is-active-for-subagents.md) - Simplified reminder for spawned sub-agents
+
+## Plan Mode Exit
+
+```mermaid
+flowchart TB
+ PlanReady["Plan Ready"]
+ Exit["ExitPlanMode Tool"]
+
+ subgraph Dialog["Plan Approval Dialog"]
+ Present["Present plan to user"]
+ UserChoice{{"User Decision"}}
+ Approve["β
Approve"]
+ Modify["βοΈ Request changes"]
+ Reject["β Reject"]
+ end
+
+ PlanReady --> Exit
+ Exit --> Present
+ Present --> UserChoice
+ UserChoice --> Approve
+ UserChoice --> Modify
+ UserChoice --> Reject
+
+ Approve --> Implement["Begin Implementation"]
+ Modify --> Continue["Continue Planning"]
+ Reject --> Normal["Return to Normal Mode"]
+
+ click Exit href "../system-prompts/tool-description-exitplanmode.md" "ExitPlanMode"
+```
+
+**Key Prompts:**
+- [ExitPlanMode Tool](../system-prompts/tool-description-exitplanmode.md) - Standard exit tool
+- [ExitPlanMode v2](../system-prompts/tool-description-exitplanmode-v2.md) - Enhanced plan dialog
+
+## Re-entry Flow
+
+Users can re-enter plan mode after exiting:
+
+```mermaid
+flowchart LR
+ Normal["Normal Mode
(implementing)"]
+ ReEnter["Shift+Tab"]
+ PlanAgain["Plan Mode
(re-entered)"]
+ Reminder["Re-entry Reminder"]
+
+ Normal --> ReEnter
+ ReEnter --> PlanAgain
+ PlanAgain --> Reminder
+
+ click Reminder href "../system-prompts/system-reminder-plan-mode-re-entry.md" "Re-entry Reminder"
+```
+
+**Key Prompt:**
+- [Plan Mode Re-entry](../system-prompts/system-reminder-plan-mode-re-entry.md) - Reminder when re-entering plan mode after implementation
+
+## All Plan Mode Prompts
+
+| Prompt | Purpose | File |
+|--------|---------|------|
+| **EnterPlanMode** | Tool to enter plan mode | [tool-description-enterplanmode.md](../system-prompts/tool-description-enterplanmode.md) |
+| **ExitPlanMode** | Tool to exit with plan | [tool-description-exitplanmode.md](../system-prompts/tool-description-exitplanmode.md) |
+| **ExitPlanMode v2** | Enhanced exit dialog | [tool-description-exitplanmode-v2.md](../system-prompts/tool-description-exitplanmode-v2.md) |
+| **Plan Mode Agent** | Agent behavior in plan mode | [agent-prompt-plan-mode-enhanced.md](../system-prompts/agent-prompt-plan-mode-enhanced.md) |
+| **Active Reminder** | Injected while plan mode active | [system-reminder-plan-mode-is-active.md](../system-prompts/system-reminder-plan-mode-is-active.md) |
+| **Subagent Reminder** | Simplified reminder for sub-agents | [system-reminder-plan-mode-is-active-for-subagents.md](../system-prompts/system-reminder-plan-mode-is-active-for-subagents.md) |
+| **Re-entry Reminder** | When re-entering after exit | [system-reminder-plan-mode-re-entry.md](../system-prompts/system-reminder-plan-mode-re-entry.md) |
diff --git a/architecture/6-slash-commands-and-skills.md b/architecture/6-slash-commands-and-skills.md
new file mode 100644
index 0000000..5d9d05d
--- /dev/null
+++ b/architecture/6-slash-commands-and-skills.md
@@ -0,0 +1,166 @@
+# Slash Commands & Skills
+
+This diagram maps Claude Code's built-in slash commands and the skill system to their prompts.
+
+```mermaid
+flowchart TB
+ subgraph SlashCommands["Slash Commands"]
+ direction TB
+
+ subgraph PR["Pull Request Commands"]
+ PRComments["/pr-comments
Fetch PR comments"]
+ ReviewPR["/review-pr
Review a PR"]
+ click PRComments href "../system-prompts/agent-prompt-pr-comments-slash-command.md" "/pr-comments"
+ click ReviewPR href "../system-prompts/agent-prompt-review-pr-slash-command.md" "/review-pr"
+ end
+
+ subgraph Security["Security Commands"]
+ SecReview["/security-review
Security analysis"]
+ click SecReview href "../system-prompts/agent-prompt-security-review-slash.md" "/security-review"
+ end
+
+ subgraph Memory["Memory Commands"]
+ Remember["/remember
Save learnings"]
+ click Remember href "../system-prompts/agent-prompt-remember-skill.md" "/remember"
+ end
+ end
+
+ subgraph SkillSystem["Skill System"]
+ SkillTool["Skill Tool"]
+ SkillDesc["Skill Description"]
+ CustomSkills["Custom Skills
User-defined"]
+ click SkillTool href "../system-prompts/tool-description-skill.md" "Skill Tool"
+ end
+
+ User["π€ User"]
+ User -->|"/command"| SlashCommands
+ User -->|"Skill invocation"| SkillSystem
+
+ style SlashCommands fill:#e1f5fe
+ style SkillSystem fill:#f3e5f5
+ style PR fill:#e8f5e9
+ style Security fill:#fff3e0
+ style Memory fill:#fce4ec
+```
+
+## Built-in Slash Commands
+
+### `/pr-comments` - Fetch PR Comments
+
+Fetches and displays comments from a GitHub Pull Request.
+
+```mermaid
+flowchart LR
+ Cmd["/pr-comments"] --> Agent["PR Comments Agent"]
+ Agent --> Fetch["Fetch from GitHub"]
+ Fetch --> Display["Display comments"]
+
+ click Agent href "../system-prompts/agent-prompt-pr-comments-slash-command.md" "PR Comments Agent"
+```
+
+**Prompt:** [agent-prompt-pr-comments-slash-command.md](../system-prompts/agent-prompt-pr-comments-slash-command.md)
+
+---
+
+### `/review-pr` - Review Pull Request
+
+Performs a code review on a GitHub Pull Request.
+
+```mermaid
+flowchart LR
+ Cmd["/review-pr"] --> Agent["PR Review Agent"]
+ Agent --> Analyze["Analyze changes"]
+ Analyze --> Review["Generate review"]
+
+ click Agent href "../system-prompts/agent-prompt-review-pr-slash-command.md" "PR Review Agent"
+```
+
+**Prompt:** [agent-prompt-review-pr-slash-command.md](../system-prompts/agent-prompt-review-pr-slash-command.md)
+
+---
+
+### `/security-review` - Security Analysis
+
+Comprehensive security review focusing on exploitable vulnerabilities (OWASP Top 10, etc.).
+
+```mermaid
+flowchart LR
+ Cmd["/security-review"] --> Agent["Security Review Agent"]
+ Agent --> Scan["Scan for vulnerabilities"]
+ Scan --> Report["Generate report
with severity levels"]
+
+ click Agent href "../system-prompts/agent-prompt-security-review-slash.md" "Security Review Agent"
+```
+
+**Prompt:** [agent-prompt-security-review-slash.md](../system-prompts/agent-prompt-security-review-slash.md)
+
+*Note: This is the largest slash command prompt at ~2610 tokens, reflecting the depth of security analysis.*
+
+---
+
+### `/remember` - Save Learnings
+
+Reviews session memories and updates `CLAUDE.local.md` with recurring patterns and learnings.
+
+```mermaid
+flowchart LR
+ Cmd["/remember"] --> Agent["Remember Skill Agent"]
+ Agent --> Review["Review session"]
+ Review --> Update["Update CLAUDE.local.md"]
+
+ click Agent href "../system-prompts/agent-prompt-remember-skill.md" "Remember Skill Agent"
+```
+
+**Prompt:** [agent-prompt-remember-skill.md](../system-prompts/agent-prompt-remember-skill.md)
+
+---
+
+## Skill System
+
+The Skill tool allows execution of both built-in and custom skills.
+
+```mermaid
+flowchart TB
+ subgraph Invocation["Skill Invocation"]
+ Direct["Direct call"]
+ SlashCmd["Via slash command"]
+ Auto["Automatic trigger"]
+ end
+
+ SkillTool["Skill Tool"]
+
+ subgraph Execution["Skill Execution"]
+ Load["Load skill definition"]
+ Context["Inject into conversation"]
+ Run["Execute skill logic"]
+ end
+
+ Invocation --> SkillTool
+ SkillTool --> Execution
+
+ click SkillTool href "../system-prompts/tool-description-skill.md" "Skill Tool"
+```
+
+**Prompt:** [tool-description-skill.md](../system-prompts/tool-description-skill.md)
+
+---
+
+## Quick Reference
+
+| Command | Purpose | Prompt File |
+|---------|---------|-------------|
+| `/pr-comments` | Fetch GitHub PR comments | [agent-prompt-pr-comments-slash-command.md](../system-prompts/agent-prompt-pr-comments-slash-command.md) |
+| `/review-pr` | Review a Pull Request | [agent-prompt-review-pr-slash-command.md](../system-prompts/agent-prompt-review-pr-slash-command.md) |
+| `/security-review` | Security vulnerability analysis | [agent-prompt-security-review-slash.md](../system-prompts/agent-prompt-security-review-slash.md) |
+| `/remember` | Save session learnings | [agent-prompt-remember-skill.md](../system-prompts/agent-prompt-remember-skill.md) |
+| *Skill Tool* | Execute custom skills | [tool-description-skill.md](../system-prompts/tool-description-skill.md) |
+
+## Related Prompts
+
+These utility prompts support the slash command system:
+
+| Prompt | Purpose | File |
+|--------|---------|------|
+| **CLAUDE.md Creation** | Generate project documentation | [agent-prompt-claudemd-creation.md](../system-prompts/agent-prompt-claudemd-creation.md) |
+| **Agent Creation** | Create custom agents | [agent-prompt-agent-creation-architect.md](../system-prompts/agent-prompt-agent-creation-architect.md) |
+| **Prompt Suggestions** | Generate follow-up prompts | [agent-prompt-prompt-suggestion-generator-v2.md](../system-prompts/agent-prompt-prompt-suggestion-generator-v2.md) |