Fix ESLint CI failure and accessibility/SEO issues in evening analysis articles

[Copilot]

ESLint was failing with no-empty errors in the newly added js/theme-init.js, and several review comments flagged accessibility and SEO inconsistencies in the localized news articles.

Changes

ESLint fix (js/theme-init.js, js/theme-toggle.js)

Empty catch blocks caused hard errors; caught error variable naming violated the caughtErrorsIgnorePattern: '^_' rule:

// Before
try { t = localStorage.getItem(key); } catch (e) {}

// After
try { t = localStorage.getItem(key); } catch (_e) { /* ignore storage errors */ }

Same _e rename applied to theme-toggle.js to suppress warnings consistently.

Spanish <h1> alignment (2026-03-05-evening-analysis-es.html)

<h1> was missing the "Análisis vespertino: " prefix and started lowercase, diverging from <title>, OG, and JSON-LD headline — fixed to match all metadata.

Korean page language annotation (2026-03-05-evening-analysis-ko.html)

English-language paragraphs and headings embedded in the lang="ko" document lacked lang="en" — screen readers would have applied Korean pronunciation to English text. Added lang="en" to all English-content elements in the article body.

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