* Split generating-webapp-metadata into single-purpose skills
Extract the deployment sequence into a new deploying-webapp skill so each
webapp skill describes exactly one actionable goal. This improves agent
skill selection accuracy by eliminating multi-concern descriptions.
- generating-webapp-metadata: now focused on scaffolding, bundle config, CSP
- deploying-webapp: new skill for the 7-step deployment sequence
* Rename -webapp- skill directories and references to -webapplication-
Rename all 7 webapp skill directories to use the full "webapplication"
entity name. Update frontmatter name fields, cross-skill references,
and descriptive prose. Package names and CLI commands are preserved
as-is since those are actual identifiers.
