feat(i18n): translate lineage column-path phrases; add common.counts namespace

[max-datahub]

Summary

Closes the known gap deferred from #17707: the four lineage column-path phrases in previewV2/EntityPaths whose word order and pluralization differ by language. Stacked on i18n-extract-preview-embed (#17707).

These phrases couldn't be naively extracted because they mix direction-dependent word order with nested JSX and pluralized nouns:

• Downstream: {field} to {columns} — Upstream: {columns} to {field}
• "Column paths from …" / "Upstream columns:" pluralize on path/column count

Approach

<Trans> with direction-split + pluralized entity.preview keys, so translators control both word order and plural forms:

• columnRelationship.upstream / .downstream — <columns/> to <field>{{fieldPath}}</field> (order flips per direction)
• columnPaths.modalTitle / .tooltip / .upstreamColumnsLabel / .downstreamColumnsLabel — _one/_other plural variants
• Nested components (<field>, <columns/>, <relationship/>) passed via components so the column list / field name render inside the translated sentence

Migrated ColumnsRelationshipText, ColumnPathsText, EntityPathsModal and removed their deferred eslint-disable comments.

Reusable common.counts namespace

Added common.counts for standalone "{count} noun" counts (column/match/owner/query/row/tag/term) and moved the generic SearchPill pill counts (term/tag/owner/match) into it via inline-namespace keys — these were previously feature-scoped duplicates.

pluralize() → i18next convention (two examples)

Applied the count-interpolation convention to two pluralize() call sites as worked examples:

• SchemaSearchInput → entity.profile.schema (searchInput.matchedColumns)
• DropdownHeader → new entity.form namespace (promptsRemaining/promptsCompleted/fieldLabel); also replaced deprecated ANTD_GRAY_V2/hardcoded colors with semantic theme tokens (required because the file was touched).

Testing

• New ColumnPathsText.test.tsx covers the 2×2 (direction × singular/plural) matrix: word-order for ColumnsRelationshipText and pluralized labels for ColumnPathsText.
• yarn eslint (i18next jsx-only) — 0 errors on touched files
• yarn tsc --noEmit — 0 errors
• Prettier clean

Notes

• EN-only extraction; DE follows separately (consistent with the rest of the i18n effort).
• translated-files.txt updated with the two newly-migrated files; the EntityPaths/SearchPill files were already opted in by feat(i18n): extract keys from entity preview cards #17707.

Checklist

• PR conforms to the Contributing Guideline
• Tests added
• Docs added/updated (n/a)
• Breaking changes (none)

🤖 Generated with Claude Code

[codecov]

Bundle Report

Changes will increase total bundle size by 2.63kB (0.01%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
datahub-react-web-esm	23.5MB	2.63kB (0.01%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: datahub-react-web-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/index-*.js	513 bytes	8.85MB	0.01%
assets/en-*.js	2.12kB	201.61kB	1.06%

Files in assets/index-*.js:

• ./src/app/previewV2/EntityPaths/EntityPathsModal.tsx → Total Size: 2.51kB

• ./src/app/previewV2/EntityPaths/ColumnsRelationshipText.tsx → Total Size: 1.02kB

• ./src/app/previewV2/SearchPill.tsx → Total Size: 3.7kB

• ./src/i18n/i18n.ts → Total Size: 9.6kB

• ./src/app/previewV2/EntityPaths/ColumnPathsText.tsx → Total Size: 1.9kB

• ./src/app/entity/shared/entityForm/schemaFieldPrompts/DropdownHeader.tsx → Total Size: 1.59kB

Files in assets/en-*.js:

• ./src/i18n/locales/en/entity.preview.json → Total Size: 4.41kB

• ./src/i18n/locales/en/entity.form.json → Total Size: 431 bytes

• ./src/i18n/locales/en/common.counts.json → Total Size: 879 bytes

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
datahub-web-react/src/i18n/i18n.ts	0.00%	2 Missing ⚠️

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