Extract hardcoded user-facing strings to i18n translation keys

[Copilot]

25+ hardcoded JSX strings identified by Auto-QA were not routed through the existing react-i18next translation system, making them untranslatable.

📌 Fixes

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📝 Summary of Changes

Extracts all flagged hardcoded strings into web/src/locales/en/common.json and replaces inline text with t() calls across 11 components. No new i18n infrastructure — uses the existing useTranslation hook already present in most files.

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Changes Made

• Added translation keys to common.json in existing sections (gpu, common, settings.localClusters) and new drilldown subsections (kustomization, policy, nodeDetail, alertDetail, buildpack)
• Added history.configurationUpdated key; renamed unused _t → t in CardHistory.tsx and CardConfigModal.tsx
• Added useTranslation import + hook to BuildpackDrillDown.tsx (was missing entirely)
• Replaced hardcoded option labels (Custom, Health, Provider) in FilterTabs.tsx
• Replaced hardcoded strings in GPUDetailModal, NamespaceResources, LocalClustersSection
• Replaced primary + secondary hardcoded strings in all four drilldown views (KustomizationDrillDown, PolicyDrillDown, NodeDrillDown, AlertDrillDown, BuildpackDrillDown)

Pattern applied consistently:

// Before
<p>No builds found</p>

// After
<p>{t('drilldown.buildpack.noBuilds')}</p>

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Checklist

• I used a coding agent (Claude Code, Copilot, Gemini, or Codex) to generate/review this code
• I have reviewed the project's contribution guidelines
• New cards target console-marketplace, not this repo
• isDemoData is wired correctly (cards show Demo badge when using demo data)
• I have written unit tests for the changes (if applicable)
• I have tested the changes locally and ensured they work as expected
• All commits are signed with DCO (git commit -s)

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Screenshots or Logs (if applicable)

N/A — string extraction only; no visual changes.

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👀 Reviewer Notes

All lint errors in modified files (AlertDrillDown, KustomizationDrillDown, LocalClustersSection) are pre-existing react-hooks/immutability violations unrelated to this PR.

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[github-actions]

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📝 Please follow instructions in the contributing guide to update your commits with the DCO

Full details of the Developer Certificate of Origin can be found at developercertificate.org.

The list of commits missing DCO signoff:

• 54b15a4 Initial plan
• b8e3eba fix: extract remaining hardcoded strings in BuildpackDrillDown

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