Handle comments codegen + refactor ssr codegen transform

Editor assessment

The header `fix(compiler-ssr): handle comments codegen + refactor ssr codegen transform` identifies the change through project-internal vocabulary, so a maintainer can act on it while a general reader must decode the wording; it is understandable with effort rather than immediately. The `fix` type is right, and the scope `compiler-ssr` correctly identifies the affected area. No body explains the cause or the chosen approach, so the rationale is absent. Style is otherwise clean — imperative, no trailing period, no ticket junk in the subject. This is a valid, comprehensible entry whose thin, jargon-heavy framing limits its instructional value.