Merge PR #637 from NikitkaRa: UI: Paragraph dialog sets alignment, indents and spacing

# Conflicts:
#	crates/engine/src/cmd/format.rs
#	crates/ui-egui/src/dialogs.rs
#	crates/ui-egui/src/ribbon.rs

docs/gaps.md

@@ -26,6 +26,7 @@
 > **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (Slide Master Preserve and Title/Footers placeholders; checklist letters unchanged, breadth stays 79%, dialogs stay 27; previous: 3-D bevel, camera and face lighting rendered) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 > **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (chart trendlines are drawn; previous: minor, chart trendlines round-trip; 3-D bevel, camera and face lighting rendered; IME composition and CJK interface text landed, #101; core-workflow alpha gate added; stage stays alpha; full re-measure against PowerPoint for Mac 16.113.4 and the open GitHub issues) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 > **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (Font dialog; previous: minor, 3-D bevel, camera and face lighting rendered) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (Paragraph dialog; previous: minor, Font dialog) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 Every known shortfall, one entry each, ranked by how much it stops someone who presents with
 PowerPoint from switching. This is the work list: pick from the top. Numbers are summarized in
@@ -358,6 +359,10 @@ Detail in [ui-parity.md](ui-parity.md).
 - **Dialogs**: 28 dialogs vs PowerPoint's ~60. The Font dialog is in (family, size, style, underline,
   colour, strikethrough, baseline, caps, character spacing, one undo step). Still missing: Bullets
   and Numbering, Find/Replace, Replace Fonts, Action Settings, Print, Insert Object…. 6–12 h.
+- **Dialogs**: 29 dialogs vs PowerPoint's ~60. The Font dialog and the Paragraph dialog are in
+  (Paragraph: alignment, first-line and hanging indents, spacing before/after, line spacing, and a
+  Tabs dialog, each OK one undo step). Still missing: Bullets and Numbering, Find/Replace, Replace
+  Fonts, Action Settings, Print, Insert Object…. 4–8 h.
 - **Command palette defaults to an Export entry that fails** (#79). 0.5 h.
 
 ## Hardware
@@ -451,6 +456,7 @@ Detail in [localization-parity.md](localization-parity.md).
 | 2026-10-13 | trivial | Command palette skips commands that need a value, so Export opens the dialog (#79) |
 | 2026-10-14 | minor | Design ▸ Effects applies a named effect scheme. The checklist row stays P, so breadth stays 79%. Dialogs stay 27 |
 | 2026-10-14 | minor | Slide Master Preserve and Title/Footers placeholders. Checklist letters unchanged (breadth stays 79%); dialogs stay 27 |
+| 2026-10-14 | minor | Paragraph dialog sets alignment, indentation, spacing and line spacing in one step; its Tabs… button opens a standalone Tabs dialog |
 | 2026-10-14 | minor | Font dialog sets typeface, size, style, underline, colour, strikethrough, baseline, caps and character spacing in one step |
 | 2026-10-13 | minor | Shape, picture and table rendering checked against PowerPoint on ~150 synthetic edge-case slides; 3-D bevels, cameras and face lighting now render approximately (gap narrowed to extrusion, rigs and the 3-D pane) |
 | 2026-10-13 | minor | Interactive decks: triggers, return-to-slide state and click rules landed in the slide show; the remaining pieces are one new entry under Features |