Plan 21 implementation evidence

Revision and scope

• Worktree: issue-3060-section-heading-visibility
• Base: current origin/main at dispatch, 2a4a1583b (fix(pdf): restore Gengar skill rating order (#3473))
• Product decisions applied: Q1 explicit Show heading toggle; Q2 Move-to continuations default visible; Q3 visual omission in preview/PDF/DOCX with accessible outline labels retained.
• No .codegraph/ directory exists in this worktree, so CodeGraph was skipped after the required presence check.
• Intent discovery ran before edits; no matching local skill was available for this schema/PDF/DOCX/web change.

Implementation

• Added backward-compatible showHeading section data for summary, built-ins, and custom sections. parseResumeData normalizes absent legacy values to true; explicit false survives round trips.
• Added heading toggles to built-in/summary and custom section menus. Toggle mutations use useUpdateResumeData, preserving undo/autosave/save/reload behavior; legacy absent values are treated as visible. Existing lock fieldset remains authoritative.
• Move-to-created custom sections explicitly set showHeading: true, independent of source heading state or copied title.
• SectionShell omits complete heading/icon/decoration output when disabled in both icon and no-icon branches. Empty titles still resolve localized defaults.
• DOCX section renderers omit visible heading paragraphs for summary, built-in, and custom sections while retaining content. Screen-reader mirror continues to expose section labels regardless of visual setting.
• Added characterization for Semantic CSS section[id="..."] section-heading { display: none; }; body remains while heading is omitted.
• Updated default/sample fixtures, generated schema references, recovery hashes, and compatibility tests; existing Gengar renderer/order changes remain untouched.

Verification

• pnpm --filter @reactive-resume/schema test: 9 files, 132 tests passed.
• pnpm --filter @reactive-resume/pdf test: 81 files, 1059 tests passed.
• pnpm --filter @reactive-resume/docx test: 9 files, 76 tests passed.
• pnpm --filter web test: 135 files, 942 tests passed.
• pnpm test: full Turborepo suite passed (19 successful tasks; 10 cache hits).
• Affected typechecks passed: schema, PDF, DOCX, web.
• Focused menu, Move-to, accessible-outline, schema, PDF semantic, and DOCX renderer tests passed.
• pnpm exec turbo boundaries: passed (1108 files, 20 packages).
• Read-only pnpm exec biome check on 22 changed source/test files: passed; no write-capable pnpm check run.
• git diff --check: passed.
• Final diff review completed; local commit follows.