Clean up mesh page (#6)

* Filter mesh page task list to show only supervisor tasks

- Add `isSupervisor` filter to rootTasks filter in TaskList component
- Only supervisor tasks will appear in the mesh page task list
- Regular tasks are now hidden from the main view
- Update empty state messages to reflect supervisor-only filtering
- When clicking a supervisor task, its detail still shows orchestrated tasks

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

* Add supervisor task button to workflow board contract cards

- Add supervisorTaskId field to ContractSummary type in backend and frontend
- Update SQL queries in repository.rs to include supervisor_task_id
- Add navigation button (▶) to WorkflowContractCard that links to /mesh/{supervisorTaskId}
- Button only shows when contract has a supervisorTaskId
- Button has tooltip "Open Supervisor Task" and stops propagation to avoid triggering card click

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

* Add full task page navigation button to TaskTree rows

Add a hover-visible arrow icon (↗) to each task row in the TaskTree
component that links to the full task page (/tasks/{taskId}). The button:
- Appears on hover using opacity transition
- Stops event propagation to avoid triggering parent onSelect
- Matches existing hover styling patterns with the #75aafc color scheme

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

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

8 files changed, 48 insertions, 9 deletions

diff --git a/makima/frontend/src/components/mesh/TaskList.tsx b/makima/frontend/src/components/mesh/TaskList.tsx
index f829b29..80077b6 100644
--- a/makima/frontend/src/components/mesh/TaskList.tsx
+++ b/makima/frontend/src/components/mesh/TaskList.tsx
@@ -95,8 +95,8 @@ export function TaskList({
 
   // Group tasks by contract and filter by status
   const groupedTasks = useMemo(() => {
-    // Separate root tasks (no parent) from subtasks
-    const rootTasks = tasks.filter((t) => !t.parentTaskId);
+    // Separate root tasks (no parent) from subtasks, and only show supervisor tasks
+    const rootTasks = tasks.filter((t) => !t.parentTaskId && t.isSupervisor);
 
     // Filter tasks based on contract status
     const filteredTasks = statusFilter === 'all'
@@ -205,8 +205,8 @@ export function TaskList({
         {totalTasks === 0 ? (
           <div className="text-center text-[#9bc3ff] text-sm font-mono opacity-60 py-8">
             {statusFilter === 'all'
-              ? 'No tasks yet. Create one to start orchestrating Claude Code instances.'
-              : `No ${statusFilter} tasks found.`}
+              ? 'No supervisor tasks yet. Create a contract to start orchestrating tasks.'
+              : `No ${statusFilter} supervisor tasks found.`}
           </div>
         ) : (
           <div>
diff --git a/makima/frontend/src/components/mesh/TaskTree.tsx b/makima/frontend/src/components/mesh/TaskTree.tsx
index 46ae78d..296d3c6 100644
--- a/makima/frontend/src/components/mesh/TaskTree.tsx
+++ b/makima/frontend/src/components/mesh/TaskTree.tsx
@@ -165,6 +165,16 @@ function TreeNode({ task, isSupervisorTask, onSelect, depth, fetchSubtasks }: Tr
             P{task.priority}
           </span>
         )}
+
+        {/* Open in full page button */}
+        <a
+          href={`/tasks/${task.id}`}
+          onClick={(e) => e.stopPropagation()}
+          className="font-mono text-[10px] text-[#555] opacity-0 group-hover:opacity-100 hover:text-[#75aafc] transition-all"
+          title="Open task page"
+        >
+          ↗
+        </a>
       </div>
 
       {/* Children */}
diff --git a/makima/frontend/src/components/workflow/WorkflowContractCard.tsx b/makima/frontend/src/components/workflow/WorkflowContractCard.tsx
index e6c8a1c..61e6d17 100644
--- a/makima/frontend/src/components/workflow/WorkflowContractCard.tsx
+++ b/makima/frontend/src/components/workflow/WorkflowContractCard.tsx
@@ -1,3 +1,4 @@
+import { useNavigate } from "react-router";
 import type { ContractSummary, ContractStatus } from "../../lib/api";
 
 interface WorkflowContractCardProps {
@@ -17,8 +18,16 @@ export function WorkflowContractCard({
   onClick,
   onDragStart,
 }: WorkflowContractCardProps) {
+  const navigate = useNavigate();
   const status = statusConfig[contract.status] || statusConfig.active;
 
+  const handleSupervisorClick = (e: React.MouseEvent) => {
+    e.stopPropagation();
+    if (contract.supervisorTaskId) {
+      navigate(`/mesh/${contract.supervisorTaskId}`);
+    }
+  };
+
   return (
     <div
       draggable
@@ -26,9 +35,20 @@ export function WorkflowContractCard({
       onClick={onClick}
       className="p-3 bg-[rgba(9,13,20,0.8)] border border-[rgba(117,170,252,0.2)] hover:border-[rgba(117,170,252,0.4)] cursor-pointer transition-colors select-none"
     >
-      {/* Name */}
-      <div className="font-mono text-sm text-[#dbe7ff] truncate mb-1">
-        {contract.name}
+      {/* Header row with name and supervisor button */}
+      <div className="flex items-center justify-between gap-2 mb-1">
+        <div className="font-mono text-sm text-[#dbe7ff] truncate flex-1">
+          {contract.name}
+        </div>
+        {contract.supervisorTaskId && (
+          <button
+            onClick={handleSupervisorClick}
+            title="Open Supervisor Task"
+            className="flex-shrink-0 px-1.5 py-0.5 font-mono text-[10px] text-[#75aafc] hover:text-[#9bc3ff] border border-[rgba(117,170,252,0.25)] hover:border-[#3f6fb3] hover:bg-[rgba(117,170,252,0.1)] transition-colors"
+          >
+            ▶
+          </button>
+        )}
       </div>
 
       {/* Status and counts row */}
diff --git a/makima/frontend/src/lib/api.ts b/makima/frontend/src/lib/api.ts
index abf72b8..daa2b5c 100644
--- a/makima/frontend/src/lib/api.ts
+++ b/makima/frontend/src/lib/api.ts
@@ -1462,6 +1462,8 @@ export interface ContractSummary {
   contractType: ContractType;
   phase: ContractPhase;
   status: ContractStatus;
+  /** Supervisor task ID for contract orchestration */
+  supervisorTaskId: string | null;
   fileCount: number;
   taskCount: number;
   repositoryCount: number;
diff --git a/makima/src/db/models.rs b/makima/src/db/models.rs
index 3e6997f..65f7168 100644
--- a/makima/src/db/models.rs
+++ b/makima/src/db/models.rs
@@ -1348,6 +1348,8 @@ pub struct ContractSummary {
     pub contract_type: String,
     pub phase: String,
     pub status: String,
+    /// Supervisor task ID for contract orchestration
+    pub supervisor_task_id: Option<Uuid>,
     pub file_count: i64,
     pub task_count: i64,
     pub repository_count: i64,
diff --git a/makima/src/db/repository.rs b/makima/src/db/repository.rs
index 36e6bc1..536bc9b 100644
--- a/makima/src/db/repository.rs
+++ b/makima/src/db/repository.rs
@@ -2190,7 +2190,7 @@ pub async fn list_contracts_for_owner(
         r#"
         SELECT
             c.id, c.name, c.description, c.contract_type, c.phase, c.status,
-            c.version, c.created_at,
+            c.supervisor_task_id, c.version, c.created_at,
             (SELECT COUNT(*) FROM files WHERE contract_id = c.id) as file_count,
             (SELECT COUNT(*) FROM tasks WHERE contract_id = c.id) as task_count,
             (SELECT COUNT(*) FROM contract_repositories WHERE contract_id = c.id) as repository_count
@@ -2214,7 +2214,7 @@ pub async fn get_contract_summary_for_owner(
         r#"
         SELECT
             c.id, c.name, c.description, c.contract_type, c.phase, c.status,
-            c.version, c.created_at,
+            c.supervisor_task_id, c.version, c.created_at,
             (SELECT COUNT(*) FROM files WHERE contract_id = c.id) as file_count,
             (SELECT COUNT(*) FROM tasks WHERE contract_id = c.id) as task_count,
             (SELECT COUNT(*) FROM contract_repositories WHERE contract_id = c.id) as repository_count
diff --git a/makima/src/server/handlers/contracts.rs b/makima/src/server/handlers/contracts.rs
index 4f4a94b..4524860 100644
--- a/makima/src/server/handlers/contracts.rs
+++ b/makima/src/server/handlers/contracts.rs
@@ -371,6 +371,7 @@ pub async fn create_contract(
                             contract_type: contract.contract_type,
                             phase: contract.phase,
                             status: contract.status,
+                            supervisor_task_id: contract.supervisor_task_id,
                             file_count: 0,
                             task_count: 0,
                             repository_count: 0,
@@ -391,6 +392,7 @@ pub async fn create_contract(
                             contract_type: contract.contract_type,
                             phase: contract.phase,
                             status: contract.status,
+                            supervisor_task_id: contract.supervisor_task_id,
                             file_count: 0,
                             task_count: 0,
                             repository_count: 0,
@@ -518,6 +520,7 @@ pub async fn update_contract(
                     contract_type: contract.contract_type,
                     phase: contract.phase,
                     status: contract.status,
+                    supervisor_task_id: contract.supervisor_task_id,
                     file_count: 0,
                     task_count: 0,
                     repository_count: 0,
@@ -1398,6 +1401,7 @@ pub async fn change_phase(
                     contract_type: updated_contract.contract_type,
                     phase: updated_contract.phase,
                     status: updated_contract.status,
+                    supervisor_task_id: updated_contract.supervisor_task_id,
                     file_count: 0,
                     task_count: 0,
                     repository_count: 0,
diff --git a/makima/src/server/handlers/mesh.rs b/makima/src/server/handlers/mesh.rs
index f710be1..e9a421c 100644
--- a/makima/src/server/handlers/mesh.rs
+++ b/makima/src/server/handlers/mesh.rs
@@ -3447,6 +3447,7 @@ pub async fn create_adhoc_task(
         contract_type: contract.contract_type,
         phase: contract.phase,
         status: contract.status,
+        supervisor_task_id: contract.supervisor_task_id,
         file_count: 0,
         task_count: 1,
         repository_count: 0,