feat: add glossary — 130+ Claude Code terms alphabetical reference

New file guide/core/glossary.md with 130+ term definitions covering
Claude Code-specific concepts, community patterns, and AI engineering
vocabulary. Alphabetical layout with category + subcategory axes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: FlorianBruniaux

CHANGELOG.md

@@ -8,6 +8,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Added
 
+- **Glossary** (`guide/core/glossary.md`): 130+ alphabetical term definitions covering Claude Code-specific concepts, community-coined patterns, and AI engineering vocabulary. Four classification axes: category (Claude Code, AI Engineering, Workflow, Security, Models, Ecosystem, Methodology, Architecture, Operations) and subcategory. Excludes standard CS terms (JWT, CI/CD, REST). Notable entries include config hierarchy (Local > Project > Global), Boris Cherny attribution, Desloppify (@peteromallet), BMAD, Ralph Wiggum Loop (Geoffrey Huntley), and the 56% Reliability Warning (Vercel engineering blog). Added to `guide/README.md` core reference table and `machine-readable/reference.yaml`.
+
 - **Context Engineering Tools page** (`guide/ecosystem/context-engineering-tools.md`): new dedicated page mapping the ecosystem of tools for token and context optimization. Covers output compression (RTK, Headroom), prompt compression (LLMLingua/LLMLingua-2), AI gateways (Edgee, Portkey), RAG optimization (Anthropic Contextual Retrieval, JIT search, RAG Triad), memory systems, KV cache infrastructure (vLLM PagedAttention, SGLang RadixAttention, semantic caching), LLMOps observability (Langfuse, LangSmith, Arize Phoenix, Maxim AI, TruLens), and core concepts (MVC, Context Rot, Semantic Priming Hypothesis). Includes tool selection matrix by use case and research landscape section. Added to `guide/README.md` ecosystem navigation.
 
 - **Auto Dream section** (`guide/ultimate-guide.md` ~l.4945): Community-discovered memory consolidation feature for Claude Code. Documents the 4-phase process (Orient, Gather Signal, Consolidate, Prune & Index), trigger conditions (24h + 5 sessions), access via `/memory`, and caveats about unofficial status. Sourced from Piebald-AI/claude-code-system-prompts. Added pointer in `machine-readable/reference.yaml`.