fix: add slash command hints in workflow completion messages (Fission-AI#603)

When artifacts or tasks are complete, the command templates now
suggest specific slash commands (/opsx:apply, /opsx:archive) instead
of generic guidance, helping users discover the next workflow step.

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Tabish Bidiwale <30385142+TabishB@users.noreply.github.com>

Author: 3 people

src/core/templates/skill-templates.ts

@@ -1762,7 +1762,7 @@ export function getOpsxContinueCommandTemplate(): CommandTemplate {
    **If all artifacts are complete (\`isComplete: true\`)**:
    - Congratulate the user
    - Show final status including the schema used
-   - Suggest: "All artifacts created! You can now implement this change or archive it."
+   - Suggest: "All artifacts created! You can now implement this change with \`/opsx:apply\` or archive it with \`/opsx:archive\`."
    - STOP
 
    ---
@@ -1951,7 +1951,7 @@ Working on task 4/7: <task description>
 - [x] Task 2
 ...
 
-All tasks complete! Ready to archive this change.
+All tasks complete! You can archive this change with \`/opsx:archive\`.
 \`\`\`
 
 **Output On Pause (Issue Encountered)**