fix(seo): include published Big Five hub in sitemap and llms discovery

[fermatmind]

Problem

/zh/personality/big-five Hub has index_eligible=1, robots=index,follow, sitemap_eligible=1, llms_eligible=1, launch_state=published, review_state=seo_discoverability_released. But the Hub was excluded from sitemap.xml, llms.txt, and llms-full.txt.

Root cause

1. SitemapGenerator::getPersonalityPublicContentAssetUrls() had whereIn('entity_type', ['domain', 'polarity']) — hub excluded.
2. The path guard str_starts_with(/Applications/WorkBuddy.app/Contents/Resources/app.asar.unpacked/cli/vendor/shim/safe-bin /Users/rainie/.workbuddy/binaries/node/versions/22.22.2/bin /Users/rainie/.workbuddy/binaries/python/versions/3.13.12/bin /Users/rainie/.workbuddy/binaries/node/cli-connector-packages/bin /Applications/WorkBuddy.app/Contents/Resources/app.asar.unpacked/cli/vendor/shim/safe-bin /usr/local/bin /Users/rainie/.local/node20/bin /Users/rainie/bin /Users/rainie/bin /Users/rainie/.npm-global/bin /usr/local/bin /Users/rainie/.local/node20/bin /opt/homebrew/bin /opt/homebrew/sbin /usr/local/bin /System/Cryptexes/App/usr/bin /usr/bin /bin /usr/sbin /sbin /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin /pkg/env/global/bin /Users/rainie/.local/node20/bin /Users/rainie/bin /Users/rainie/.npm-global/bin, '/zh/personality/big-five/') required trailing slash — Hub path (/zh/personality/big-five) failed.

Fix

• Add ENTITY_HUB to whereIn filter
• Accept path /zh/personality/big-five without trailing slash

Safety gates

• All existing strictness gates preserved
• Only published, eligible hubs are included
• noindex/draft hubs remain excluded (tested)
• Domain/polarity pages unaffected (no regression)

Tests

• Hub included in sitemap when published and eligible
• noindex hub excluded
• draft hub excluded
• All 9 existing SitemapGeneratorTest tests pass
• All 43 related tests pass

Runtime impact

• sitemap-source will include Hub on next warm
• sitemap.xml, llms.txt, llms-full.txt will include Hub

Search submission impact: none

Deployment impact: not executed

Explicitly deferred

• facet_hub discoverability
• Enneagram/RIASEC hubs
• BigFiveSeoDiscoverabilityReleaseWriter hub gate (DB already fixed)
• content changes
• search submission