fix: retain numbered declarations in reserved sticky rows

docs/editing.md

@@ -450,6 +450,7 @@ Review marks belong only to the open comparison and survive filtering, file navi
 Text panes show change excerpts with **10 unchanged lines above and below** each change, preserving original file line numbers. Overlapping or touching excerpts merge; omitted stretches show an unchanged-line count in both panes. Files with only metadata changes show their notice or “No text changes” rather than unrelated source.
 
 **Scope labels** identify named enclosing functions/classes and containers, such as `impl Review › run`. Muted, unnumbered rows supply context when the declaration is vertically outside that pane's viewport; scrolling it back into view removes the label and reclaims its row. If an unwrapped declaration remains vertically visible but its symbol is clipped horizontally, its label instead overlays the preceding content row. On the first visible row, that label is hidden so the pane border stays intact. Horizontal scrolling never inserts a row or shifts source text; scrolling the symbol back into view restores the covered row. Decorators alone do not count as the declaration name. Visibility follows source columns and wrapped segments independently for each side. Each split side uses its own source, so renamed functions keep distinct old/new names. Unified labels use `−` for Before, `+` for After, and `±` for shared names. Narrow panes prefer the innermost name. Labels are presentation only: motions, selections, copying, editing, and line jumps retain original source coordinates. Context comes from the existing Tree-sitter trees, including supported injected code, without requiring an LSP; unsupported syntax gets no guessed label.
+When the reserved sticky row can show the immediately preceding declaration with its name visible, it renders that declaration as ordinary numbered source instead. Scrolling farther into the body replaces it with the unnumbered label; scrolling back restores the declaration.
 Overlays never cover a visible declaration name on the preceding row, including a different Before/After declaration in unified view; the label is hidden instead.
 Within an excerpt, additional hunks and alignment gaps do not repeat an unchanged scope label. A new excerpt or an actual scope change gets a fresh label when needed; sticky context is retained independently for each side.