Fix workflow YAML parsing by quoting reserved keyword

[Copilot]

GitHub Actions was not recognizing the workflow file due to YAML parser ambiguity with the on keyword.

Changes

• Quote on: as 'on': to prevent YAML boolean interpretation
• Add trailing newline per POSIX text file standard

The keyword on is a reserved YAML boolean (like yes, no, true, false). Unquoted, it causes parser ambiguity:

# Before - ambiguous
on:
  workflow_dispatch:

# After - explicit string key
'on':
  workflow_dispatch:

Original prompt

fix why workflow not recognized on action

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