* Centralize filesystem paths in a single module
Add paths.py, which resolves the repo root once and derives the cache,
accounts DB, logs, templates, frontend and bundled-city-data locations
from it. Replace the 13 per-module `dirname(__file__)/..` anchors with
references to it, so a module's location no longer determines where the
app reads its data. Env overrides (accounts DB, VAPID, IndexNow) are
unchanged; every resolved path is byte-identical to before.
Groundwork for moving modules into packages without re-pointing paths.
Claude-Session: https://claude.ai/code/session_01XXxmNFy9cZ6Gh8Y9thZn62
* Split the backend into domain packages
Group the flat backend modules into packages that mirror their concerns:
data/ climate, grading, scoring, grid, places, cities,
city_events, store
web/ app, views, homepage, content, schemas
notifications/ notify, digest, push, mailer, discord,
discord_interactions, discord_link
accounts/ models, users, api_accounts, db
core/ metrics, singleton, audit
Intra-project imports are rewritten to the package-qualified form. The
entry scripts (indexnow, warm_cities, migrate, gen_cities, gen_flavor)
and paths.py stay at the backend/ root, and backend/app.py becomes a
shim re-exporting web.app:app so the launch target stays `app:app` —
run.sh, the systemd units, and CI need no change.
Verified: full suite (318) passes, `uvicorn app:app` boots and serves
the home/SEO/static/API surfaces, and every root script imports clean.
Claude-Session: https://claude.ai/code/session_01XXxmNFy9cZ6Gh8Y9thZn62
Replace em-dashes in user-facing copy across the server-rendered pages,
static frontend views, and the strings the app injects at runtime, using
colons, commas, parentheses or full stops as the context wants. Data
placeholder glyphs (a lone "—" for a missing reading) are left alone,
since a hyphen there reads as a minus sign in temperature columns.
Also tighten the high-visibility surfaces (home hero and meta, about,
privacy, city and records ledes, glossary blurbs) toward a plainer,
more direct voice while keeping every factual claim intact.
Claude-Session: https://claude.ai/code/session_01XXxmNFy9cZ6Gh8Y9thZn62
Common-sense coverage pass on city_events.py: the list was 10/31 US and heavily
Anglosphere with no Latin America, no Middle East, and only London/Paris for all of
continental Europe. Add 9 verified events filling those gaps — Los Angeles (2025
wildfires), Moscow (2010 heat/wildfires), Madrid (2021 Storm Filomena), Athens (2018
Attica fires), Seoul (2022 floods), Dubai (2024 floods), Jeddah (2009 floods), Sao
Paulo (2014-17 drought), Rio de Janeiro (2010 floods). Every Wikipedia link
verified to resolve. 40 events total; nothing removed (no factual errors found).
Auto-sourcing a notable weather event from Wikipedia search proved unreliable
(wrong matches, low coverage), so city_events.py is a small, fact-checked list of
one iconic event per city (Katrina/New Orleans, Harvey/Houston, the 1952 Great
Smog/London, the 2021 heat dome/Seattle, ...) — 31 cities, each with a Wikipedia
link. The city page shows a 'Notable weather in {city}' callout when one exists and
otherwise just the flavor blurb. Tests check the curated slugs are all valid and the
callout renders (and is absent for uncurated cities).
