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-coordinate/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: team-coordinate
 description: Universal team coordination skill with dynamic role generation. Uses team-worker agent architecture with role-spec files. Only coordinator is built-in -- all worker roles are generated at runtime as role-specs and spawned via team-worker agent. Beat/cadence model for orchestration. Triggers on "Team Coordinate ".
-allowed-tools: TeamCreate(*), TeamDelete(*), SendMessage(*), TaskCreate(*), TaskUpdate(*), TaskList(*), TaskGet(*), Task(*), AskUserQuestion(*), Read(*), Write(*), Edit(*), Bash(*), Glob(*), Grep(*)
+allowed-tools: TeamCreate(*), TeamDelete(*), SendMessage(*), TaskCreate(*), TaskUpdate(*), TaskList(*), TaskGet(*), Agent(*), AskUserQuestion(*), Read(*), Write(*), Edit(*), Bash(*), Glob(*), Grep(*)
 ---
 
 # Team Coordinate 
@@ -93,7 +93,7 @@ User provides task description
 When coordinator spawns workers, use `team-worker` agent with role-spec path:
 
 ```
-Task({
+Agent({
   subagent_type: "team-worker",
   description: "Spawn <role> worker",
   team_name: <team-name>,

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

@@ -25,7 +25,6 @@ Create task chains from dynamic dependency graphs. Builds pipelines from the tas
 ```
 TaskCreate({
   subject: "<PREFIX>-<NNN>",
-  owner: "<role-name>",
   description: "PURPOSE: <goal> | Success: <success_criteria>
 TASK:
   - <step 1>
@@ -40,10 +39,9 @@ EXPECTED: <deliverable path> + <quality criteria>
 CONSTRAINTS: <scope limits>
 ---
 InnerLoop: <true|false>
-RoleSpec: <session-folder>/role-specs/<role-name>.md",
-  blockedBy: [<dependency-list from graph>],
-  status: "pending"
+RoleSpec: <session-folder>/role-specs/<role-name>.md"
 })
+TaskUpdate({ taskId: "<PREFIX>-<NNN>", addBlockedBy: [<dependency-list from graph>], owner: "<role-name>" })
 ```
 
 5. **Update team-session.json** with pipeline and tasks_total

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

@@ -141,7 +141,7 @@ Ready tasks found?
 **Spawn worker tool call** (one per ready task):
 
 ```
-Task({
+Agent({
   subagent_type: "team-worker",
   description: "Spawn <role> worker for <subject>",
   team_name: <team-name>,
@@ -190,7 +190,7 @@ All tasks completed (no pending, no in_progress)
       |   })
       |   +- "Archive & Clean":
       |   |   Update session status="completed"
-      |   |   TeamDelete(<team-name>)
+      |   |   TeamDelete()
       |   |   Output final summary with artifact paths
       |   +- "Keep Active":
       |   |   Update session status="paused"

.claude/skills/team-coordinate/subagents/discuss-subagent.md

@@ -11,7 +11,7 @@ Unlike team-lifecycle-v4's fixed perspective definitions (product, technical, qu
 Called by roles after artifact creation:
 
 ```
-Task({
+Agent({
   subagent_type: "cli-discuss-agent",
   run_in_background: false,
   description: "Discuss <round-id>",

.claude/skills/team-coordinate/subagents/explore-subagent.md

@@ -5,7 +5,7 @@ Shared codebase exploration utility with centralized caching. Callable by any ro
 ## Invocation
 
 ```
-Task({
+Agent({
   subagent_type: "cli-explore-agent",
   run_in_background: false,
   description: "Explore <angle>",