Update campaign generator name

[mnkiefer]

• Renames the generator workflow and updas its description to reflect the new "Agentic Campaign Generator" terminology.

[mnkiefer]

@copilot init and recompile

[Copilot]

@mnkiefer I've opened a new pull request, #10718, to work on those changes. Once the pull request is ready, I'll request review from you.

[mnkiefer]

@copilot Run gh aw init to get the newly generated files in aw/, etc.

[Copilot]

@mnkiefer I've opened a new pull request, #10719, to work on those changes. Once the pull request is ready, I'll request review from you.