docs(profile): add README with config.json documentation

Document the Profile system structure, configuration options,
CLI usage, and programmatic API.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/agent/profile/README.md

@@ -0,0 +1,197 @@
+# Agent Profile System
+
+The Agent Profile system allows you to define and manage agent personalities, capabilities, and configurations. Each profile is a collection of markdown files and a JSON configuration file stored in a directory.
+
+## Directory Structure
+
+```
+~/.super-multica/agent-profiles/
+└── <profile-id>/
+    ├── soul.md          # Personality constraints and behavior style
+    ├── identity.md      # Agent's name and self-awareness
+    ├── tools.md         # Custom tool usage instructions
+    ├── memory.md        # Persistent knowledge base
+    ├── bootstrap.md     # Guidance for each conversation start
+    └── config.json      # Profile configuration (tools, provider, model)
+```
+
+## Profile Files
+
+### soul.md
+Defines the agent's personality constraints and behavior boundaries.
+
+```markdown
+# Soul
+
+You are a helpful AI assistant. Follow these guidelines:
+
+- Be concise and direct in your responses
+- Ask clarifying questions when requirements are ambiguous
+- Admit when you don't know something
+```
+
+### identity.md
+Contains the agent's identity information.
+
+```markdown
+# Identity
+
+- Name: CodeBot
+- Role: Software development assistant
+```
+
+### tools.md
+Custom instructions for tool usage (appended to the system prompt).
+
+### memory.md
+Persistent knowledge base that survives across conversations.
+
+### bootstrap.md
+Guidance information provided at the start of each conversation.
+
+### config.json
+JSON configuration for the profile:
+
+```json
+{
+  "tools": {
+    "profile": "coding",
+    "allow": ["web_fetch"],
+    "deny": ["exec"]
+  },
+  "provider": "anthropic",
+  "model": "claude-sonnet-4-20250514",
+  "thinkingLevel": "medium"
+}
+```
+
+## Configuration Options
+
+### tools
+Tool policy configuration. See [Tools README](../tools/README.md) for details.
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `profile` | string | Base profile: `minimal`, `coding`, `web`, `full` |
+| `allow` | string[] | Additional tools to allow (supports `group:*` syntax) |
+| `deny` | string[] | Tools to block (takes precedence over allow) |
+| `byProvider` | object | Provider-specific tool rules |
+
+Example configurations:
+
+```json
+// Minimal - only file operations
+{
+  "tools": {
+    "profile": "minimal",
+    "allow": ["group:fs"]
+  }
+}
+
+// Coding without web access
+{
+  "tools": {
+    "profile": "coding",
+    "deny": ["group:web"]
+  }
+}
+
+// Full access except shell execution
+{
+  "tools": {
+    "deny": ["exec", "process"]
+  }
+}
+```
+
+### provider
+Default LLM provider for this profile.
+
+### model
+Default model ID for this profile.
+
+### thinkingLevel
+Default thinking level: `none`, `low`, `medium`, `high`.
+
+## Usage
+
+### CLI
+
+```bash
+# Use a specific profile
+pnpm agent:cli --profile my-agent "Hello"
+
+# Profile with custom base directory
+pnpm agent:cli --profile my-agent --profile-dir /path/to/profiles "Hello"
+```
+
+### Programmatic
+
+```typescript
+import { ProfileManager } from "./profile/index.js";
+
+// Load existing profile
+const manager = new ProfileManager({
+  profileId: "my-agent",
+  baseDir: "/custom/path",  // optional
+});
+
+// Get profile (returns undefined if not exists)
+const profile = manager.getProfile();
+
+// Get or create with defaults
+const profile = manager.getOrCreateProfile(true);  // useTemplates
+
+// Build system prompt from profile
+const systemPrompt = manager.buildSystemPrompt();
+
+// Get tools configuration
+const toolsConfig = manager.getToolsConfig();
+
+// Get full profile config
+const config = manager.getProfileConfig();
+```
+
+## Config Priority
+
+When using a profile, configurations are merged with CLI options:
+
+1. **Profile config.json** - Base configuration
+2. **CLI options** - Override profile settings
+
+```bash
+# Profile has tools.profile = "coding"
+# CLI adds --tools-deny exec
+# Result: coding profile without exec tool
+pnpm agent:cli --profile my-agent --tools-deny exec "list files"
+```
+
+The merge behavior:
+- `profile`: CLI wins if specified
+- `allow`: Union of both lists
+- `deny`: Union of both lists
+- `byProvider`: Deep merge with CLI taking precedence
+
+## Creating a Profile
+
+### Manual Creation
+
+1. Create directory: `mkdir -p ~/.super-multica/agent-profiles/my-agent`
+2. Create markdown files (soul.md, identity.md, etc.)
+3. Create config.json with your settings
+
+### Programmatic Creation
+
+```typescript
+import { createAgentProfile } from "./profile/index.js";
+
+// Create with default templates
+const profile = createAgentProfile("my-agent", {
+  useTemplates: true,  // Fill with default content
+});
+
+// Create empty profile
+const profile = createAgentProfile("minimal-agent", {
+  useTemplates: false,
+});
+```