Capture the five recurring code-review patterns from the recent PR series
(#3591–#3596) as enforceable rules so they don't have to be raised again
in review.
## Conventions
- Prefer MUI native props over `sx` (e.g. color={...}, mt={...}, width={...}).
- Use the full theme path for colors: theme.palette.text.secondary, never
the "text.secondary" shorthand string. The shorthand is invisible to
grep, which makes future audits and refactors miss callsites.
- No hardcoded numeric or string literals — use LAYOUT, typographyLevels,
theme.shape.borderRadius, theme.palette tokens.
- Use useTheme() inside components; don't import { theme } from
@/Utils/Theme/Theme (factory output, not a live mode-aware instance).
- Pair runtime tuples with derived types so they can't drift.
## Files
- docs/frontend-conventions.md — long-form doc with before/after examples
drawn from the actual review fixes, plus a pre-PR checklist.
- CLAUDE.md — short summary in the Code Conventions section pointing to
the doc, so it's loaded into agent context at session start.
## ESLint enforcement
- client/.eslintrc.cjs — four no-restricted-syntax selectors for each rule:
- color="…" / bgcolor="…" / borderColor="…" with a dotted shorthand value
- sx={{ key: ... }} where key has a native equivalent, only on hoistable
components (Box, Stack, Typography, Grid, Container, Paper, Card*,
Divider, Link, Chip) — Dialog/Drawer/Menu etc. only accept sx.
- import { theme } from "@/Utils/Theme/Theme"
- Typography fontSize={13} (the body default — drop the prop).
- TypeScript files are now actually parsed: added @typescript-eslint/parser
and @typescript-eslint/eslint-plugin and a TS override that extends the
React plugin configs. Several @typescript-eslint/recommended rules
disabled to avoid noise on the existing codebase.
- client/package.json — lint script now covers .ts/.tsx; new lint-strict
script for CI use once the codebase is conformant; --max-warnings 0
removed from `lint` so existing-code warnings don't block the workflow.
## Surface
Running `npm run lint` after this change reports ~280 warnings against
the existing codebase, almost all from rule #1 (sx-vs-native). These are
intentionally warnings, not errors — they surface the work without
blocking. Each warning links to the rule number in the conventions doc
so the reasoning is one click away.