fire-planner/fire_planner/api
Viktor Barzin eb0dd3ddbf
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fire-planner: life-event spending bumps now reflected in fan + auto-
refresh on scenario edits

Two fixes for the user's report that adding a £100k life-event spend
didn't change the chart:

Engine (simulator.py)
- New `extra_outflows` param. cashflow_adjustments still drains the
  portfolio at start-of-year as before, but the simulator now ALSO
  records the spending in `withdrawal_hist[p, y]` so the chart's red
  median-withdrawal trace shows the bump. Without this, the £100k
  silently came out of the portfolio but the user-facing withdrawal
  trace stayed at the strategy's flat 4% draw.
- simulate.py wires extra_outflows = essential + discretionary
  category outflows from life events.

UX (ScenarioDetail.tsx)
- New auto-refresh: when life events / income streams / flex rules
  change for a scenario, the page fires `/simulate` automatically
  with 2,000 paths and uses the result as the primary fan/year-stats
  source. The persisted MC run is only consulted as a fallback for
  scenarios with no overrides.
- Fan chart title gains a "live preview · Xs · Ny" pill while a sim
  is current, and "re-running…" while a fresh one is in flight.
- Removed the now-redundant "Live preview run" duplicate card lower
  down — the main chart IS the live preview.
- Year-stats badge row reads from sim.data when available so changes
  propagate immediately to NW / Δ NW / Spending / Taxes.

247 pytest pass (+1 new); mypy + ruff clean; frontend typecheck/test/
build green.
2026-05-10 19:17:57 +00:00
..
__init__.py api: expand FastAPI surface for scenarios, networth, life-events, goals, simulate 2026-05-09 21:48:36 +00:00
auth.py api: expand FastAPI surface for scenarios, networth, life-events, goals, simulate 2026-05-09 21:48:36 +00:00
cashflow.py fire-planner: ProjectionLab parity Wave 1 — tabbed shell, year stats, goals, 2026-05-10 12:49:44 +00:00
dependencies.py api: expand FastAPI surface for scenarios, networth, life-events, goals, simulate 2026-05-09 21:48:36 +00:00
goals.py api: drop bearer-token gate from /api/* CRUD + simulate 2026-05-09 23:56:37 +00:00
income_streams.py fire-planner: ProjectionLab parity Wave 1 — tabbed shell, year stats, goals, 2026-05-10 12:49:44 +00:00
life_events.py api: drop bearer-token gate from /api/* CRUD + simulate 2026-05-09 23:56:37 +00:00
networth.py api: expand FastAPI surface for scenarios, networth, life-events, goals, simulate 2026-05-09 21:48:36 +00:00
progress.py fire-planner: ProjectionLab parity Wave 1 — tabbed shell, year stats, goals, 2026-05-10 12:49:44 +00:00
scenarios.py fire-planner: UX review pass 1 — fix sidebar/route/PATCH/badges issues 2026-05-10 17:17:55 +00:00
schemas.py fire-planner: Wave 2 chart-first — flex spending, categorised life 2026-05-10 16:49:04 +00:00
simulate.py fire-planner: life-event spending bumps now reflected in fan + auto- 2026-05-10 19:17:57 +00:00
spending.py whatif: live data refresh, inflation-adjusted spending, legend fix 2026-05-10 11:27:22 +00:00
spending_profile.py fire-planner: Wave 2 chart-first — flex spending, categorised life 2026-05-10 16:49:04 +00:00
year_stats.py fire-planner: ProjectionLab parity Wave 1 — tabbed shell, year stats, goals, 2026-05-10 12:49:44 +00:00