Hyphenate Across Column: overflow-safe re-lay budget; drop the stale ROADMAP clause

ROADMAP.md

@@ -357,7 +357,7 @@ Newest first.
 - **2026-10-22** · Autoflow (Shift-click with the loaded text cursor, autoflow on Place, `text.thread {autoflow}`) fills the pages that follow before it adds any, as InDesign does: one frame per column on each following page, whatever else the page holds, then new pages at the end of the document. It inserted pages right after the story's last frame, in front of the document's own pages. Frames it set past the end of the text go again; a page the document had stays, and a page autoflow added only for such a frame goes with it. Smart Text Reflow of the primary text frame is unchanged. No readiness percentage change.
 - **2026-10-16** · Edit › Keyboard Shortcuts imports a set saved by InDesign's Show Set (.txt, Windows or Mac key names, UTF-8 or UTF-16): matched commands take its Default shortcuts or lose theirs, other commands give up keys it takes, and a report lists what it changed and the items it could not match (`window.importShortcuts`, #1180). Tool keys stay fixed. No readiness percentage change.
 - **2026-10-23** · Translations: a missing string shows in English and fails no test; `cargo xtask i18n-report`, run by `cargo xtask ci`, prints the missing strings per language. Tests keep duplicate-key and placeholder checks and the language mechanics (lookup, context captions, plural captions, right-to-left). No readiness percentage change.
-- **2026-10-22** · Hyphenation Settings, as in InDesign: the Paragraph panel menu's Hyphenation… (`app.hyphenationDialog`) sets the selected paragraphs' Hyphenate, Words with at Least, After First, Before Last, Hyphen Limit, Hyphenation Zone, the Better Spacing ↔ Fewer Hyphens slider (InDesign's 0–10 steps), Hyphenate Capitalized Words, Last Word and Across Column, with Preview, as one undo step; Paragraph Style Options › Hyphenation has the same form. The panel menu lists its items in InDesign's order. Replicated from a hyphenation tutorial: the same text in Minion Pro breaks into the same lines as InDesign's with hyphenation on, off, and at Fewer Hyphens. Hyphenate Across Column is kept and round-trips through IDML, but composition doesn't apply it yet. No readiness percentage change.
+- **2026-10-22** · Hyphenation Settings, as in InDesign: the Paragraph panel menu's Hyphenation… (`app.hyphenationDialog`) sets the selected paragraphs' Hyphenate, Words with at Least, After First, Before Last, Hyphen Limit, Hyphenation Zone, the Better Spacing ↔ Fewer Hyphens slider (InDesign's 0–10 steps), Hyphenate Capitalized Words, Last Word and Across Column, with Preview, as one undo step; Paragraph Style Options › Hyphenation has the same form. The panel menu lists its items in InDesign's order. Replicated from a hyphenation tutorial: the same text in Minion Pro breaks into the same lines as InDesign's with hyphenation on, off, and at Fewer Hyphens. No readiness percentage change.
 - **2026-10-22** · Hyphenate Across Column (Hyphenation Settings; IDML HyphenateAcrossColumns) is applied: with it off, a paragraph whose line ending in an automatic hyphen would end a column or frame is re-composed without that hyphenation point, so the word moves on whole, as in InDesign. On by default, as in InDesign, so existing layouts don't change. No readiness percentage change.
 - **2026-10-22** · A ruler guide dragged with the Selection tools, out of a ruler, on its own or with other selected guides, snaps along its axis as objects do (#1221): to other ruler guides, margins, columns, bleed, page and object edges and centers (with the smart-guide mark) and the document grid, within the snap zone and following Snap to Guides and Smart Guides. Shift snaps to the ruler's ticks and Cmd suspends snapping. The preview line, the position readout and the drop use the same snapped position. No readiness percentage change.
 - **2026-10-22** · macOS: the app menu has a Language submenu after Settings… with each interface language in its own name and the current one checked, as in the suite's other apps; Preferences › General › Interface Language stays. No readiness percentage change.

crates/compose/src/lib.rs

@@ -1649,7 +1649,7 @@ fn compose_with_db(doc: &Document, story: &Story, frames: &[FrameSpec], opts: &C
                     && !pp.hyph_across_column
                     && line_no > col_first_line
                     && let Some(at) = hyphen_at
-                    && hyph_relays < (story.text.len() + 64) * (restores + 1)
+                    && hyph_relays < story.text.len().saturating_add(64).saturating_mul(restores.saturating_add(1))
                 {
                     hyph_relays += 1;
                     no_hyph[pi].push(at);