feat: add language profiles and canonical pantry categories

[shadowdevcode]

Summary

• add owner and cook language profiles in household settings and localize owner/cook workspace copy
• normalize pantry categories to canonical keys across app, seed data, and AI parse output
• align pantry labels/search behavior with canonical categories

Interface and Data Model Notes

• introduced UiLanguage type
• households now support ownerLanguage and cookLanguage fields
• canonical pantry category keys: spices|pulses|staples|veggies|dairy|other

Test and Rules Alignment

• updated Firestore rules to validate language fields
• added rules test coverage for language profile updates
• updated E2E selectors/flows for localized UI and meal detail autosave
• added unit tests for copy + pantry category helpers
• updated verify:local to run unit:test

Validation

• npm run lint
• npm run unit:test
• npm run build
• npm run rules:test
• npm run e2e

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Project	Deployment	Actions	Updated (UTC)
rasoi-planner-project	Ready	Preview, Comment	Mar 25, 2026 0:17am