feat(commands): make dispatch files active command handlers

All 25 dispatch files now have name: in frontmatter with Workflow
section that displays sub-commands and prompts for selection.
Bare /noun invocation is now useful instead of a dead end.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/data-seed/commands/seed.md

@@ -1,17 +1,25 @@
 ---
-description: Test data generation — create realistic fake data from schema definitions
+name: seed
+description: Test data generation — type /seed <action> for commands
 ---
 
 # /seed
 
 Test data generation and database seeding with reproducible profiles.
+When invoked without a sub-command, display available actions and ask which to run.
 
-## Sub-commands
+## Available Commands
 
-| Sub-command | Description |
+| Command | Description |
 |-------------|-------------|
 | `/seed setup` | Setup wizard for data-seed configuration |
 | `/seed generate` | Generate seed data from schema or models |
 | `/seed apply` | Apply seed data to database or create fixture files |
 | `/seed profile` | Define reusable data profiles (small, medium, large) |
 | `/seed validate` | Validate seed data against schema constraints |
+
+## Workflow
+
+1. Display the table above
+2. Ask: "Which command would you like to run?"
+3. Route to the selected sub-command