feat(data-analytics-demo): T-13 docs + T-14 changelog/handoff (Stage 4 close-out)#92
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Final phase of the data-analytics-demo bolt-on. Closes Stage 4 of the Spec-Driven workflow (T-01〜T-14 — 14 / 14 tasks done across 8 PRs). T-13 — Documentation: - packages/data-analytics-demo/README.md: full rewrite. Quickstart in ≤ 5 commands (AC-ε.1), per-layer one-line architecture summary, layout table, constraints (load-bearing), engineered ML signals explanation. - packages/data-analytics-demo/docs/architecture.md: mermaid pipeline diagram covering all 6 layers plus per-layer detail tables and the list of files produced by a full `make demo` run. T-14 — Changelog + handoff: - CHANGELOG.md (root): adds an Unreleased entry recording the data-analytics-demo 0.1.0 ship — six layers, CI infrastructure, security mitigations, test surface, all 8 PRs referenced. The package becomes the seventh `packages/*` entry and the monorepo's first Python sub-tree. - HANDOFF.md (root): "Current" block flipped from "planning phase" to "shipped"; the verified-prior-art table superseded by the ADR-0070 reference (it now lives in the design ADR, not in the ephemeral handoff). Local verify: - ruff OK / mypy OK (21 source files) / pytest 36 PASS / coverage 87.20% - check-doc-drift 0 fail / check-adr-claims 77/77 PASS Stage 4 done. The package can be developed and demoed end-to-end with a single `make demo` invocation; recruiters can clone the repo and read all three deliverables (SQL marts, ML + SHAP, dashboard + narrative) in under five minutes.
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…4 close-out) (#92) Final phase of the data-analytics-demo bolt-on. Closes Stage 4 of the Spec-Driven workflow (T-01〜T-14 — 14 / 14 tasks done across 8 PRs). T-13 — Documentation: - packages/data-analytics-demo/README.md: full rewrite. Quickstart in ≤ 5 commands (AC-ε.1), per-layer one-line architecture summary, layout table, constraints (load-bearing), engineered ML signals explanation. - packages/data-analytics-demo/docs/architecture.md: mermaid pipeline diagram covering all 6 layers plus per-layer detail tables and the list of files produced by a full `make demo` run. T-14 — Changelog + handoff: - CHANGELOG.md (root): adds an Unreleased entry recording the data-analytics-demo 0.1.0 ship — six layers, CI infrastructure, security mitigations, test surface, all 8 PRs referenced. The package becomes the seventh `packages/*` entry and the monorepo's first Python sub-tree. - HANDOFF.md (root): "Current" block flipped from "planning phase" to "shipped"; the verified-prior-art table superseded by the ADR-0070 reference (it now lives in the design ADR, not in the ephemeral handoff). Local verify: - ruff OK / mypy OK (21 source files) / pytest 36 PASS / coverage 87.20% - check-doc-drift 0 fail / check-adr-claims 77/77 PASS Stage 4 done. The package can be developed and demoed end-to-end with a single `make demo` invocation; recruiters can clone the repo and read all three deliverables (SQL marts, ML + SHAP, dashboard + narrative) in under five minutes. Co-authored-by: leagames0221-sys <leagames0221@users.noreply.github.com>
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Summary
Final phase of the data-analytics-demo bolt-on. Closes Spec-Driven Stage 4 (T-01〜T-14 — 14 / 14 tasks done across 8 PRs: #82, #83, #86, #87, #88, #89, #90, #91, #92).
What lands (T-13 + T-14)
packages/data-analytics-demo/README.md— full rewrite. ≤ 5-command quickstart (AC-ε.1), per-layer one-line architecture summary, layout table, load-bearing constraints (zero credit card, local LLM, consumer laptop, synthetic data), engineered-signal explanation.packages/data-analytics-demo/docs/architecture.md— mermaid pipeline diagram covering all six layers + per-layer detail tables + the full list of files amake demorun produces.CHANGELOG.md(root) —Unreleasedentry recording the data-analytics-demo 0.1.0 ship: six layers, CI infrastructure, security mitigations, test surface, PR list. The package becomes the seventhpackages/*entry and the monorepo's first Python sub-tree.HANDOFF.md(root) —Currentblock flipped from "planning phase" to "shipped"; the verified-prior-art table is now in ADR-0070 instead of the ephemeral handoff.Stage 4 task summary
Local verify
ruff+mypy --strictclean (21 source files)pytest36 passed; coverage 87.20 %check-doc-drift.mjs0 fail /check-adr-claims.mjs77 / 77 PASSTest plan