Gaurav Bajpai 9c47f28221 feat(bdt): reference docs + sample BDTs @W-22196528@ ... Adds the curated reference library the skill loads on demand, plus four synthetic sample BDTs used by docs, tests, and LLM-mode demos. references/ (4 curated Markdown files): - bdt-reference.md — top-level BDT JSON anatomy: envelope, nodes, edges, UI layer, definitions, businessType semantics. Cites the core-262 upstream JSON schema and Connect API spec. - bdt-node-catalog.md — every node type (DMO Source, DMO Sink, Filter, Join, Union, Aggregate, Window, Formula, Split, Append, etc.) with its required/optional fields and typical usage. Audited against core-262 enums. - bdt-function-catalog.md — the expression-language function surface (string, numeric, date, conditional, aggregate). Grouped by category with signature + one-line semantics. - bdt-window-functions.md — windowing operators (ROW_NUMBER, RANK, LEAD/LAG, running aggregates) with PARTITION BY / ORDER BY grammar and gotchas. assets/sample_bdts/ (4 synthetic, dependency-free BDTs): - minimal_dmo_to_dmo.json — smallest valid BDT (1 source, 1 sink). - joins_and_filters.json — join + filter composition. - window_and_aggregate.json — window function + aggregate in one graph. - append_and_split.json — append-then-split branching topology. Grounding rules enforced in this commit: - Every claim in references/ cites an upstream source (core-262 JSON schema, Connect API reference, or the Data Cloud BDT editor spec). No speculative content. - No raw DITA or internal-only documentation is shipped; references are synthesized from public-facing material. - BusinessTypeEnum values use the canonical camelCase casing from core-262 (case-cleanup fix included here). - Sample BDTs are original synthetic fixtures, not redacted customer data. Each is small enough to read end-to-end. @W-22196528@		2026-04-23 23:29:05 +05:30
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append_and_split.json	feat(bdt): reference docs + sample BDTs @W-22196528@	2026-04-23 23:29:05 +05:30
joins_and_filters.json	feat(bdt): reference docs + sample BDTs @W-22196528@	2026-04-23 23:29:05 +05:30
minimal_dmo_to_dmo.json	feat(bdt): reference docs + sample BDTs @W-22196528@	2026-04-23 23:29:05 +05:30
window_and_aggregate.json	feat(bdt): reference docs + sample BDTs @W-22196528@	2026-04-23 23:29:05 +05:30