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docs: add development-cycle retrospective (4 phases) - #119
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Walks through the project history reconstructed from git log + CHANGELOG: minimal end-to-end backbone (pre-0.5.0), feature catalog (0.5.0), codebase + quality consolidation (0.6.0 → 0.6.5), and the PyPSA-EUR open-source European dataset (PR #112). Indexed under docs/README.md. https://claude.ai/code/session_01Pg7fuCUG2edfm5PyHS6SbN
Rewrites Phase 1 from the abstract CHANGELOG summary into a six-week chronology grounded in PR descriptions: - 1.1 Bootstrap (pre-#1) — scaffolding pushed direct to main - 1.2 End-to-end loop (PRs #1–#15) — NAD scaling, multi-tab pan/zoom, manual actions, action variants, action scoring, svgUtils + usePanZoom - 1.3 UX maturation (PRs #16–#24) — settings panel, OverloadPanel, monitoring factor, action filters, state-switching SLDs - 1.4 Robustness + CI (PRs #25–#46) — backend/frontend test suites, CircleCI + GitHub Actions, lazy loading, divergence UI - 1.5 Persistence + complex actions (PRs #47–#56) — save/reload sessions, combined actions w/ persistence, islanding MW, App.tsx Phase 1 hooks - 1.6 Two-step + replay logging + rebrand (PRs #57–#65) — split analysis, config.json persistence, load shedding, MW Start, SLD highlights, InteractionLogger, ExpertAssist → Co-Study4Grid Sections 2–4 left untouched (will be reconciled in a follow-up). https://claude.ai/code/session_01Pg7fuCUG2edfm5PyHS6SbN
Reconciliation of section 2 (0.5.0): - Drop misattributed PRs that were actually pre-rebrand: save/reload (#49/#52), MW Start (#62), interaction-logging (#64), SLD highlights (#63), load shedding initial integration (#61). All now properly cited in section 1.5–1.6. - Disambiguate App.tsx refactor history: PR #56 (hooks, 2100 → 800, pre-rebrand) vs PR #74 (components, 1000 → 650, 0.5.0) vs PR #75 (memoization Phase 2, same LoC). - Add accurate 0.5.0 PRs: #66 (vectorization w/ benchmark table), #69/#70/#71 (UI polish), #72 (curtailment), #73 (loads_p/gens_p format + configurable MW), #74/#75 (App.tsx decomposition), #78 (PST tap re-simulation), #84/#86/#87/#90 (detachable tabs). - Add a recap table summarizing what's truly new in 0.5.0. Diagrams added (Mermaid, GitHub-rendered): - Gantt timeline of all 4 phases (top of doc). - High-level architecture (frontend / backend / data). - Two-step analysis sequence diagram (section 1.6). - App.tsx LoC evolution flow (section 2.4). - Backend mixin decomposition before/after PR #104/#106 (section 3). - PyPSA-EUR pipeline flowchart (section 4). https://claude.ai/code/session_01Pg7fuCUG2edfm5PyHS6SbN
Cloned marota/ExpertAssist (783 commits, init 13/02/2026 13:25) to extract concrete metrics for the pre-rebrand era — previously sourced only from PR descriptions: - Section 1.1: replace handwave "scaffolding existed" with the actual init commit (44 files, 2513 LoC). Document the 7 endpoints, 130-LoC main.py, 35-LoC App.tsx, 19-LoC api.ts, 755-LoC standalone, 5 ad-hoc test scripts. Confirm NDJSON streaming + tkinter file picker were present at commit zero. - Section 1.2: add a measured before/after table for PRs #1-#15 (App.tsx 35 → 617, VisualizationPanel 33 → 260, main.py 130 → 233, recommender_service.py 384 → 636, standalone 755 → 2100, endpoints 7 → 13). List the 6 endpoints added during this fortnight. - Section 1.5: replace the rounded "2100 → ~800" for PR #56 with the measured value (2100 → 969 at merge), note the post-merge cleanup reaches the original ~800 target. - App.tsx LoC diagram: insert a "cleanup 22-28/03" node between PR #56 and PR #74 to reflect actual figures. - Update the leading note to mention the ExpertAssist clone. https://claude.ai/code/session_01Pg7fuCUG2edfm5PyHS6SbN
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Summary
Adds
docs/architecture/development-cycle.md, a chronologicalretrospective of Co-Study4Grid reconstructed from
git log(358 commits, 28/03/2026 → 30/04/2026) and
CHANGELOG.md(0.5.0 → 0.6.5).
The doc is structured around the four phases of the project:
PRs Refactor analysis API to split step1/step2 and add comprehensive tests #57–Rename ExpertAssist to Co-Study4Grid #65) — FastAPI + React/TS scaffolding, single-pass analysis,
hand-maintained standalone mirror.
complete remedial-action catalog (topology / PST / curtailment /
load-shedding), combined actions, two-step N-1 workflow,
detachable viz tabs, save/reload + interaction logging,
~16.5 s → ~4 s perf vectorization.
14/04 → 22/04/2026) —
App.tsxrefactor, backend mixindecomposition, auto-generated standalone, 4-layer parity
guards, continuous code-quality gate, SVG DOM recycling,
docs/reorganization.PR feat: PyPSA-EUR pipeline consolidation, fr225_400 dataset, full test coverage #112) — reproducible PyPSA-EUR → XIIDM pipeline, two
committed datasets (
pypsa_eur_fr400,pypsa_eur_fr225_400),dedicated pytest coverage.
docs/README.mdis updated to index the new file under theArchitecture section. This is a starting point — the user has
indicated they will enrich the content next.
Test plan
docs resolve:
code-quality-analysis.md,app-refactoring-plan.md,phase2-state-management-optimization.md,../data/pypsa-eur-osm-to-xiidm.md,../../frontend/PARITY_AUDIT.md).docs/README.mdArchitecture table includes the new row.https://claude.ai/code/session_01Pg7fuCUG2edfm5PyHS6SbN
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