docs(tools): update AGENTS.md to document individual task tools

Replace unified 'task' tool documentation with 4 individual tools:

- task_create: Create task with auto-generated T-{uuid} ID

- task_list: List active tasks with summary

- task_get: Retrieve full task object by ID

- task_update: Update task fields with dependency support

Add detailed TASK TOOLS section with args tables and usage examples.

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

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/tools/AGENTS.md

@@ -8,7 +8,7 @@
 ```
 tools/
 ├── delegate-task/    # Category routing (constants.ts 569 lines, tools.ts 213 lines)
-├── task/             # Unified CRUD: create/list/get/update/delete (task.ts 58 lines)
+├── task/             # 4 individual tools: create, list, get, update (task-create.ts, task-list.ts, task-get.ts, task-update.ts)
 ├── lsp/              # 6 LSP tools: goto_definition, find_references, symbols, diagnostics, prepare_rename, rename
 ├── ast-grep/         # 2 tools: search, replace (25 languages)
 ├── grep/             # Custom grep (60s timeout, 10MB limit)
@@ -27,7 +27,10 @@ tools/
 
 | Tool | Category | Pattern | Key Logic |
 |------|----------|---------|-----------|
-| `task` | Task | Factory | Unified 5-action dispatch (create/list/get/update/delete) |
+| `task_create` | Task | Factory | Create task with auto-generated T-{uuid} ID, threadID recording |
+| `task_list` | Task | Factory | List active tasks with summary (excludes completed/deleted) |
+| `task_get` | Task | Factory | Retrieve full task object by ID |
+| `task_update` | Task | Factory | Update task fields, supports addBlocks/addBlockedBy for dependencies |
 | `call_omo_agent` | Agent | Factory | Direct explore/librarian invocation |
 | `background_output` | Background | Factory | Retrieve background task result |
 | `background_cancel` | Background | Factory | Cancel running background tasks |
@@ -51,6 +54,103 @@ tools/
 | `skill_mcp` | Skill | Factory | Call MCP tools/resources/prompts |
 | `slashcommand` | Command | Factory | Slash command dispatch |
 
+## TASK TOOLS
+
+Task management system with auto-generated T-{uuid} IDs, dependency tracking, and OpenCode Todo API sync.
+
+### task_create
+
+Create a new task with auto-generated ID and threadID recording.
+
+**Args:**
+| Arg | Type | Required | Description |
+|-----|------|----------|-------------|
+| `subject` | string | Yes | Task subject/title |
+| `description` | string | No | Task description |
+| `activeForm` | string | No | Active form (present continuous) |
+| `metadata` | Record<string, unknown> | No | Task metadata |
+| `blockedBy` | string[] | No | Task IDs that must complete before this task |
+| `blocks` | string[] | No | Task IDs this task blocks |
+| `repoURL` | string | No | Repository URL |
+| `parentID` | string | No | Parent task ID |
+
+**Example:**
+```typescript
+task_create({
+  subject: "Implement user authentication",
+  description: "Add JWT-based auth to API endpoints",
+  blockedBy: ["T-abc123"] // Wait for database migration
+})
+```
+
+**Returns:** `{ task: { id, subject } }`
+
+### task_list
+
+List all active tasks with summary information.
+
+**Args:** None
+
+**Returns:** Array of task summaries with id, subject, status, owner, blockedBy. Excludes completed and deleted tasks. The blockedBy field is filtered to only include unresolved (non-completed) blockers.
+
+**Example:**
+```typescript
+task_list() // Returns all active tasks
+```
+
+**Response includes reminder:** "1 task = 1 task. Maximize parallel execution by running independent tasks (tasks with empty blockedBy) concurrently."
+
+### task_get
+
+Retrieve a full task object by ID.
+
+**Args:**
+| Arg | Type | Required | Description |
+|-----|------|----------|-------------|
+| `id` | string | Yes | Task ID (format: T-{uuid}) |
+
+**Example:**
+```typescript
+task_get({ id: "T-2a200c59-1a36-4dad-a9c3-3064d180f694" })
+```
+
+**Returns:** `{ task: TaskObject | null }` with all fields: id, subject, description, status, activeForm, blocks, blockedBy, owner, metadata, repoURL, parentID, threadID.
+
+### task_update
+
+Update an existing task with new values. Supports additive updates for dependencies.
+
+**Args:**
+| Arg | Type | Required | Description |
+|-----|------|----------|-------------|
+| `id` | string | Yes | Task ID to update |
+| `subject` | string | No | New subject |
+| `description` | string | No | New description |
+| `status` | "pending" \| "in_progress" \| "completed" \| "deleted" | No | Task status |
+| `activeForm` | string | No | Active form (present continuous) |
+| `owner` | string | No | Task owner (agent name) |
+| `addBlocks` | string[] | No | Task IDs to add to blocks (additive) |
+| `addBlockedBy` | string[] | No | Task IDs to add to blockedBy (additive) |
+| `metadata` | Record<string, unknown> | No | Metadata to merge (set key to null to delete) |
+
+**Example:**
+```typescript
+task_update({
+  id: "T-2a200c59-1a36-4dad-a9c3-3064d180f694",
+  status: "completed"
+})
+
+// Add dependencies
+task_update({
+  id: "T-2a200c59-1a36-4dad-a9c3-3064d180f694",
+  addBlockedBy: ["T-other-task"]
+})
+```
+
+**Returns:** `{ task: TaskObject }` with full updated task.
+
+**Dependency Management:** Use `addBlockedBy` to declare dependencies on other tasks. Properly managed dependencies enable maximum parallel execution.
+
 ## DELEGATION SYSTEM (delegate-task)
 
 8 built-in categories: `visual-engineering`, `ultrabrain`, `deep`, `artistry`, `quick`, `unspecified-low`, `unspecified-high`, `writing`