refactor: replace Task tool with Agent tool and fix schema compliance

## Task -> Agent Replacement
- Replace all Task({}) calls with Agent({}) across .claude/ directory
- Update allowed-tools declarations from Task to Agent
- Update documentation references from "Task tool" to "Agent tool"

## Schema Compliance Fixes

### Agent Schema
- Add missing required `description` parameter in 6 files
- Add missing `run_in_background: false` for subagent calls
- Add missing `subagent_type` parameter

### AskUserQuestion Schema
- Fix issue-manage/SKILL.md: reduce options from 5 to 4 (max allowed)

### SendMessage Schema
- Fix team-worker.md: use correct params (type, content, summary)
- Remove invalid `team_name` parameter

### TaskCreate/TaskUpdate Schema
- Remove invalid `blockedBy`, `owner`, `status` from TaskCreate calls
- Use separate TaskUpdate calls for dependencies and ownership
- Fix TaskUpdate syntax to use object parameter

### TeamDelete Schema
- Remove parameters from TeamDelete() calls (should be no params)

### TaskOutput Schema
- Fix Python-style syntax to JavaScript object syntax

## Files Changed
- 146 files updated across commands/, skills/, skills_lib/, agents/

.claude/skills/team-testing/roles/coordinator/commands/dispatch.md

@@ -24,7 +24,6 @@ Every task description uses structured format:
 ```
 TaskCreate({
   subject: "<TASK-ID>",
-  owner: "<role>",
   description: "PURPOSE: <what this task achieves> | Success: <measurable criteria>
 TASK:
   - <step 1: specific action>
@@ -38,10 +37,9 @@ CONTEXT:
 EXPECTED: <deliverable path> + <quality criteria>
 CONSTRAINTS: <scope limits, focus areas>
 ---
-InnerLoop: <true|false>",
-  blockedBy: [<dependency-list>],
-  status: "pending"
+InnerLoop: <true|false>"
 })
+TaskUpdate({ taskId: "<TASK-ID>", addBlockedBy: [<dependency-list>], owner: "<role>" })
 ```
 
 ### Mode Router
@@ -71,10 +69,9 @@ CONTEXT:
 EXPECTED: <session>/strategy/test-strategy.md
 CONSTRAINTS: Read-only analysis
 ---
-InnerLoop: false",
-  blockedBy: [],
-  status: "pending"
+InnerLoop: false"
 })
+TaskUpdate({ taskId: "STRATEGY-001", owner: "strategist" })
 ```
 
 **TESTGEN-001** (generator, L1):
@@ -93,10 +90,9 @@ CONTEXT:
 EXPECTED: <session>/tests/L1-unit/
 CONSTRAINTS: Only generate test code, do not modify source
 ---
-InnerLoop: true",
-  blockedBy: ["STRATEGY-001"],
-  status: "pending"
+InnerLoop: true"
 })
+TaskUpdate({ taskId: "TESTGEN-001", addBlockedBy: ["STRATEGY-001"], owner: "generator" })
 ```
 
 **TESTRUN-001** (executor, L1):
@@ -115,10 +111,9 @@ CONTEXT:
 EXPECTED: <session>/results/run-001.json
 CONSTRAINTS: Only fix test files, not source code
 ---
-InnerLoop: true",
-  blockedBy: ["TESTGEN-001"],
-  status: "pending"
+InnerLoop: true"
 })
+TaskUpdate({ taskId: "TESTRUN-001", addBlockedBy: ["TESTGEN-001"], owner: "executor" })
 ```
 
 ### Standard Pipeline

.claude/skills/team-testing/roles/coordinator/commands/monitor.md

@@ -68,7 +68,6 @@ When executor reports test results:
 ```
 TaskCreate({
   subject: "TESTGEN-<layer>-fix-<round>",
-  owner: "generator",
   description: "PURPOSE: Revise tests to fix failures and improve coverage
 TASK:
   - Read previous test results and failure details
@@ -80,10 +79,9 @@ CONTEXT:
   - Previous results: <session>/results/run-<N>.json
 EXPECTED: Revised test files in <session>/tests/<layer>/
 ---
-InnerLoop: true",
-  blockedBy: [],
-  status: "pending"
+InnerLoop: true"
 })
+TaskUpdate({ taskId: "TESTGEN-<layer>-fix-<round>", owner: "generator" })
 ```
 
 Create TESTRUN-fix blocked on TESTGEN-fix.
@@ -108,7 +106,7 @@ Find and spawn the next ready tasks.
 3. Spawn team-worker:
 
 ```
-Task({
+Agent({
   subagent_type: "team-worker",
   description: "Spawn <role> worker for <task-id>",
   team_name: "testing",

.claude/skills/team-testing/roles/coordinator/role.md

@@ -202,7 +202,7 @@ Execute `commands/dispatch.md` inline (Command Execution Protocol):
 Find first unblocked task and spawn its worker:
 
 ```
-Task({
+Agent({
   subagent_type: "team-worker",
   description: "Spawn strategist worker",
   team_name: "testing",
@@ -269,7 +269,7 @@ AskUserQuestion({
 
 | Choice | Steps |
 |--------|-------|
-| Archive & Clean | TaskList -> verify all completed -> update session status="completed" -> TeamDelete("testing") -> output final summary |
+| Archive & Clean | TaskList -> verify all completed -> update session status="completed" -> TeamDelete() -> output final summary |
 | Keep Active | Update session status="paused" -> output: "Session paused. Resume with: Skill(skill='team-testing', args='resume')" |
 | Deepen Coverage | Create additional TESTGEN+TESTRUN tasks for next layer -> Phase 4 |