[koculu]

Change

• Rename tsSsgContext / TsSsgContext and their resolver helpers to pageContext / PageContext across APIs, components, tests, and docs. This replaces the old names.
• Align Regor dependencies on 1.7.4 and bump packages to 1.1.9.
• Add a generic pre-commit dependency check to catch mismatched declarations and duplicate installed copies, with documented exceptions.
• Reuse shared Regor examples through import-content and import-codeblock.

Validation

Dependency checking, 12 fixture scenarios, TypeScript checking for the new script, and formatting checks passed.