chore(docs): regenerate AGENTS.md knowledge base (#1118)

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/features/AGENTS.md

@@ -2,24 +2,18 @@
 
 ## OVERVIEW
 
-Core feature modules + Claude Code compatibility layer. Background agents, skill MCP, builtin skills/commands, 5 loaders.
+Core feature modules + Claude Code compatibility layer. Orchestrates background agents, skill MCPs, builtin skills/commands, and 16 feature modules.
 
 ## STRUCTURE
 
 ```
 features/
-├── background-agent/           # Task lifecycle (1335 lines)
+├── background-agent/           # Task lifecycle (1377 lines)
 │   ├── manager.ts              # Launch → poll → complete
-│   ├── concurrency.ts          # Per-provider limits
-│   └── types.ts                # BackgroundTask, LaunchInput
-├── skill-mcp-manager/          # MCP client lifecycle (520 lines)
-│   ├── manager.ts              # Lazy loading, cleanup
-│   └── types.ts                # SkillMcpConfig
-├── builtin-skills/             # Playwright, git-master, frontend-ui-ux
-│   └── skills.ts               # 1203 lines
-├── builtin-commands/           # ralph-loop, refactor, init-deep, start-work, remove-deadcode
-│   ├── commands.ts             # Command registry
-│   └── templates/              # Command templates (4 files)
+│   └── concurrency.ts          # Per-provider limits
+├── builtin-skills/             # Core skills (1729 lines)
+│   └── skills.ts               # agent-browser, dev-browser, frontend-ui-ux, git-master, typescript-programmer
+├── builtin-commands/           # ralph-loop, refactor, ulw-loop, init-deep
 ├── claude-code-agent-loader/   # ~/.claude/agents/*.md
 ├── claude-code-command-loader/ # ~/.claude/commands/*.md
 ├── claude-code-mcp-loader/     # .mcp.json
@@ -29,7 +23,10 @@ features/
 ├── context-injector/           # AGENTS.md/README.md injection
 ├── boulder-state/              # Todo state persistence
 ├── hook-message-injector/      # Message injection
-└── task-toast-manager/         # Background task notifications
+├── task-toast-manager/         # Background task notifications
+├── skill-mcp-manager/          # MCP client lifecycle (520 lines)
+├── tmux-subagent/              # Tmux session management
+└── ... (16 modules total)
 ```
 
 ## LOADER PRIORITY
@@ -44,8 +41,9 @@ features/
 
 - **Lifecycle**: `launch` → `poll` (2s) → `complete`
 - **Stability**: 3 consecutive polls = idle
-- **Concurrency**: Per-provider/model limits
+- **Concurrency**: Per-provider/model limits via `ConcurrencyManager`
 - **Cleanup**: 30m TTL, 3m stale timeout
+- **State**: Per-session Maps, cleaned on `session.deleted`
 
 ## SKILL MCP
 
@@ -58,3 +56,4 @@ features/
 - **Sequential delegation**: Use `delegate_task` parallel
 - **Trust self-reports**: ALWAYS verify
 - **Main thread blocks**: No heavy I/O in loader init
+- **Direct state mutation**: Use managers for boulder/session state