[brzuchal]

Summary

Adds Polish (pl) as an interface language, in the same shape as the Czech (#335) and French (#413) tables.

• crates/ui-egui/src/i18n/pl.rs: all 381 keys of the reference (Japanese) table.
• i18n.rs: Language::Pl (name "Polski", code pl, system tags pl-* / pl_*), appended to the end of ALL, so the switcher lists it last.
• app.language.set help and error text, and the snapshot example usage, list pl.
• docs/localization-parity.md and ROADMAP.md list Polish under the other shipped languages.

Like the other tables, this covers only what the ribbon catalog covers today (ribbon, sheet tabs, widgets, Backstage labels). Dialogs, menus, panes and messages stay English until the catalog grows.

Clean room

Every entry is written from the meaning of the English label in ordinary Polish computing vocabulary. No Microsoft Excel (or other product) localisation, string table or translated UI was consulted or copied. I am a native Polish speaker. The table was drafted with Claude (AI agent) and I went through every entry myself; no second native speaker has reviewed it yet.

Format Cells dialog

The Format Cells dialog uses 56 labels. 20 of them were already in the Polish table (Number, Currency, Accounting, Left, Center, …), and 7aad174 adds the other 36 (Format Cells, Alignment, Font, Border, Protection, Wrap text, Shrink to fit, Bold, Italic, Subscript, Superscript, Locked, Hidden, No Color, Outline, Diagonal ↗/↘, Single/Double Accounting, …).

A follow-up commit adds the keys that #788 introduces: the Format Cells|Fill tab ("Wypełnienie"), the seven border styles, and the protection note.

#788 is merged, so the Format Cells dialog now looks these labels up and shows them in Polish. The other dialogs follow once #669 lands; it uses the same keys.

The latest merge of main also adds the six Page Setup margin labels (Left/Right/Top/Bottom/Header/Footer Margin) that the reference table gained, and keeps Serbian (new on main) next to Polish.

What does not change

• Formulas. Polish keeps the canonical en-US formula locale, like every interface language except Spanish: English function names, , separators, . decimals. A test pins this (=SUMA(1;2) is not accepted).
• Number formats, regional settings, storage and command ids are untouched.
• No new assets and no fonts.

Tests

• Catalog completeness requires a non-empty Polish label for every reference key.
• Page Layout|Orientation vs Orientation context keys, pass-through of unknown text (Sheet1!A1), pl-PL / pl_PL.UTF-8 / parse("pl").
• interaction.rs: app.language.set with pl renders the ribbon and round-trips through ui.json.
• formula_locale.rs: polish_interface_retains_its_canonical_formula_fallback.

Ran locally (Rust 1.95.0): cargo fmt --all --check clean; cargo test -p gridcraft-ui-egui --test formula_locale --test interaction passes (10 + 25); --lib theme passes (12).

Two failures that are already on main (3926d21) and are not caused by this PR:

• i18n::tests::translations_are_unique_and_preserve_unknown_text fails with missing French: Different First Page (fix(i18n): French labels name unrelated actions and omit two required translations #529; fixes open in fix(i18n): correct scattered wrong French translations and add 2 missing keys #454 and CSV/text export: General numbers without exponents (integers below 1e16 exact); & switches to scientific past 21 characters #449). It stops at French before reaching the Polish assertion for the later keys; the 381 Polish keys were checked against the reference table by the generator script as well.
• cargo clippy -D warnings on 1.95.0 reports collapsible_match in crates/xlsx/src/xls/mod.rs:257 and overly_complex_bool_expr in crates/ui-egui/src/grid.rs:2494.

Summary by CodeRabbit

• New Features
  • Added Polish as a supported interface language, with translated labels available in the app.
  • Polish is available in the language menu and listed among shipped languages and supported language options.
  • Polish locale tags select the Polish interface.
• Compatibility
  • Formulas and number formats continue to use English-style conventions when the Polish interface is selected.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
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• Plan: Advanced
• Run ID: 4704433a-4718-45e7-9805-632b2fef4878

📥 Commits

Reviewing files that changed from the base of the PR and between 2a7a576 and 6ab7cb7.

📒 Files selected for processing: 1

• crates/ui-egui/src/i18n/pl.rs

🚧 Files skipped from review as they are similar to previous changes: 1

• crates/ui-egui/src/i18n/pl.rs

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📝 Walkthrough

This change adds Polish as an interface language. It adds a Polish translation catalog and Polish locale-tag recognition. It updates language metadata, tests, and localization documentation. Formula entry and number formats remain en-US.

Changes: Polish interface localization

Layer / File(s)	Summary
Register Polish and add translations crates/ui-egui/src/i18n.rs, crates/ui-egui/src/i18n/pl.rs	Adds Language::Pl, its display name and language code, locale-tag parsing, and Polish translation lookup. Tests check catalog coverage, selected translations, and unchanged workbook text.
Expose and validate Polish language support crates/ui-egui/src/control.rs, crates/ui-egui/src/lib.rs, crates/ui-egui/src/theme.rs, crates/ui-egui/tests/*, crates/ui-egui/examples/snapshot.rs, ROADMAP.md, docs/localization-parity.md	Adds pl to supported-language listings and checks. Tests cover Polish labels, formula behavior, language serialization, and language switching. Documentation records the 381-label catalog and its review status.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Possibly related PRs

• storytold/gridcraft#1807: Extends the Polish language implementation with a larger catalog and additional ribbon tab lookup behavior.

Suggested reviewers: echelon

Merge Risk: ⚪ Minimal · up to 6ab7c

No actionable issue remains from this review; the change is ready for normal merge checks.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: adding Polish as the pl interface language.
Docstring Coverage		Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 14 functions across 8 files.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at @crates/ui-egui/src/i18n/pl.rs:
- Around line 252-255: Update the Polish translations for “Top 10 Items,” “Top
10%,” “Bottom 10 Items,” and “Bottom 10%” to describe highest and lowest values
rather than first and last positions, keeping the labels consistent with value
ranking.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: c6907d43-a5aa-45fc-b28f-4f5cde19fb15

📥 Commits

Reviewing files that changed from the base of the PR and between 49fe41a and 2a7a576.

📒 Files selected for processing: 10

• ROADMAP.md
• crates/ui-egui/examples/snapshot.rs
• crates/ui-egui/src/control.rs
• crates/ui-egui/src/i18n.rs
• crates/ui-egui/src/i18n/pl.rs
• crates/ui-egui/src/lib.rs
• crates/ui-egui/src/theme.rs
• crates/ui-egui/tests/formula_locale.rs
• crates/ui-egui/tests/interaction.rs
• docs/localization-parity.md

Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review.