Kleos v1.8.0

What's Changed

• fix(scratchpad): restore user_id tenant isolation (cross-tenant working-memory leak) by @Ghost-Frame in #107
• Improve store, search, and recall: correctness fixes + retrieval-quality tuning by @Ghost-Frame in #105
• feat(lexicon): i18n lexicon module (EN/FR), with French folding and atoms regex fixed by @Ghost-Frame in #108
• feat(llm): runtime-overridable prompts with embedded defaults (security-hardened) by @Ghost-Frame in #110
• chore(deps): migrate opentelemetry 0.27 to 0.32 stack (supersedes #109) by @Ghost-Frame in #111
• feat(search): retrieval-quality v2 -- abstain gate, facts/episode/community channels, hop-2, fusion tuning (all default-off) by @Ghost-Frame in #112
• feat(growth): add GET /growth/context for SIS-style prompt injection by @Rutimka in #113
• feat(lexicon): add German (de) baseline lexicon by @Rutimka in #114
• fix(sidecar): correct watcher path parsing + add Dockerfile sidecar stage by @Rutimka in #116
• fix(intelligence): restore associative auto-linker as a background pass by @Ghost-Frame in #117
• fix: gate plaintext secret retrieval behind interactivity + least-privilege mirror token (CodeQL #150, #175) by @Ghost-Frame in #118
• feat(retrieval): language-agnostic retrieval -- multilingual reranker + unicode61 FTS by @Ghost-Frame in #119
• fix(gui): remove the 3D graph flow-trail particles by @Ghost-Frame in #121
• fix(reranker,abstain): offline reranker fallback + recalibrate abstain for bge-reranker-v2-m3 by @Ghost-Frame in #123
• feat(nlp): language-agnostic NLP -- content-language detection routing across the intelligence stack by @Ghost-Frame in #124

Full Changelog: v1.7.3...v1.8.0