Fix task number display - match field names in existing task files

Issue: Task numbers showed as 'Task #:' instead of 'Task #26:'
Root cause: Config used 'task_number' but files use 'number'

Changes:
- summary: 'Task #{{number}}:' (was task_number)
- slug: task-{{number}} (was task_number)
- field name: 'number' (was 'task_number')
- blocker field: 'blocker' (was 'is_blocker')
- Added 'full_spec' field to match existing files

Now matches the actual task file structure in tasks/ folder.

admin/config.yml

@@ -31,14 +31,14 @@ collections:
     folder: "tasks"
     create: true
     extension: "md"
-    slug: "task-{{task_number}}-{{slug}}"
+    slug: "task-{{number}}-{{slug}}"
     identifier_field: "title"
-    summary: "Task #{{task_number}}: {{title}}"
-    sortable_fields: ["priority", "status", "task_number", "is_blocker"]
+    summary: "Task #{{number}}: {{title}}"
+    sortable_fields: ["priority", "status", "number", "blocker"]
     sort: "priority:asc"
     view_filters:
       - label: "Blockers Only"
-        field: "is_blocker"
+        field: "blocker"
         pattern: true
       - label: "High Priority (P1)"
         field: "priority"
@@ -50,16 +50,17 @@ collections:
         field: "status"
         pattern: "Complete"
     fields:
-      - {label: "Task Number", name: "task_number", widget: "number", value_type: "int", min: 1, hint: "Unique task ID"}
+      - {label: "Task Number", name: "number", widget: "number", value_type: "int", min: 1, hint: "Unique task ID"}
       - {label: "Title", name: "title", widget: "string", hint: "Short descriptive title"}
       - {label: "Priority", name: "priority", widget: "select", options: ["P0-Blocker", "P1-High", "P2-Medium", "P3-Low", "P4-Personal"], default: "P2-Medium"}
       - {label: "Status", name: "status", widget: "select", options: ["Planned", "In Progress", "Blocked", "Complete"], default: "Planned"}
-      - {label: "⚠️ Launch Blocker", name: "is_blocker", widget: "boolean", default: false, hint: "Critical for soft launch"}
+      - {label: "⚠️ Launch Blocker", name: "blocker", widget: "boolean", default: false, hint: "Critical for soft launch"}
       - {label: "Owner", name: "owner", widget: "select", options: ["Michael", "Meg", "Holly", "Trinity"], default: "Michael"}
       - {label: "Tags", name: "tags", widget: "list", required: false, hint: "Categories: commercial, automation, documentation, etc."}
       - {label: "Estimated Hours", name: "estimated_hours", widget: "number", required: false, value_type: "int", min: 0}
       - {label: "Completed Date", name: "completed_date", widget: "date", required: false, format: "YYYY-MM-DD"}
       - {label: "Blocked By", name: "blocked_by", widget: "string", required: false, hint: "What's blocking this task?"}
+      - {label: "Full Spec Path", name: "full_spec", widget: "string", required: false, hint: "Path to detailed docs"}
       - {label: "Task Details", name: "body", widget: "markdown", hint: "Overview, next steps, links to full docs"}
 
   # ═══════════════════════════════════════════════════════════