feat(rules): user permanent rules — writing style, web building, web security (BDR-085)

Three rules/ files from the user's permanent-rules text:
- writing-style.md (always-on): em-dash ban, no it's-not-X-it's-Y, no
  emoji, no decorative bold, no reflex triads, no hedging chains, slop
  vocabulary ban, sentence-length variety, deliverable self-check.
  Scope carve-outs keep caveman registries, code comments, skill
  templates intact.
- web-building.md (path-scoped): design anti-default list + public-site
  done checklist (report missing items, never invent them).
- web-security.md (path-scoped): browser-exposed keys, service-key/client
  split, RLS, server-side auth, IDOR, cookie flags, field minimization,
  rate limiting — extends §Security, no dup of the core.
Project CLAUDE.md rules/ doctrine: 320-budget exception for standalone
always-on user rule sets.

rules/web-building.md

@@ -0,0 +1,30 @@
+---
+paths: ["**/*.html", "**/*.astro", "**/*.css", "**/*.scss", "**/*.tsx", "**/*.jsx", "**/*.vue", "**/*.svelte"]
+---
+
+# Web building — no default reflexes + done checklist
+
+## Avoid unless the user asks for them
+- Purple gradient, purple/black, neon, washed-out pastels, rainbow.
+- Drop shadow on everything; the same border-radius on every element.
+- Bento grid, dot grid, glowing background orbs, decorative color strip.
+- Sparkle icons, animated arrows, emojis as icons, decorative fake
+  terminal window.
+- Hover animation on every element; scroll-reveal animations everywhere.
+- Three aligned feature cards, three pricing tiers, checkmark bullets.
+- Vague hero title ("unleash your potential"): state what the product does.
+- Fake testimonials, fake visitor or client counters, invented numbers.
+  Never, in any context.
+- Inter, Geist or Space Grotesk as the default font: propose an
+  alternative and justify it. Existing brand identities keep their fonts.
+
+## Before declaring a public site done
+Check: custom 404 · call to action in the first viewport · per-page
+title + description · share/OG image · favicons · robots.txt · sitemap ·
+alt text on images · layout tested at 375 px · loading states · form
+error messages · confirmation page · real legal mentions · cookie banner
+with a working refuse option · audience measurement · contact address ·
+compressed images.
+Report the missing items to the user instead of inventing them. Internal
+tools and dashboards: only the relevant items apply. Deep audits stay
+with /seo, /harden, /web-validate.

rules/web-security.md

@@ -0,0 +1,21 @@
+---
+paths: ["**/*.ts", "**/*.tsx", "**/*.js", "**/*.jsx", "**/*.vue", "**/*.svelte", "**/*.astro", "**/*.php", "**/*.py"]
+---
+
+# Web app security — specifics
+
+Extends the global Security section (input validation, parameterized
+queries, secrets in env vars, AuthN/AuthZ, fail closed). If a request
+breaks one of these rules, say so instead of doing it.
+
+- No API key in code shipped to the browser. Env vars, server-side only.
+- The service/admin key never reaches the client: publishable key only.
+- Row Level Security enabled on every table (Supabase/Postgres and kin).
+- Authentication verified server-side, never only in the browser.
+- No IDOR: changing an id in a URL must never expose another user's
+  data. Authorize object access on every request.
+- Passwords hashed (bcrypt/argon2). Session cookies httpOnly + secure
+  + sameSite.
+- API responses return only the fields the client needs.
+- Login rate limiting, upload restrictions (type/size), forced HTTPS,
+  security headers.

rules/writing-style.md

@@ -0,0 +1,29 @@
+# Writing style — user-facing prose
+
+Scope: prose written FOR the user: answers, docs, reports, deliverables,
+site copy. Does NOT override memory registries (caveman format), code
+comments (code style rules), or structured skill/report templates.
+
+Banned:
+- Em-dash. Use a comma, a colon, or a period.
+- The "it's not X, it's Y" / "ce n'est pas X, c'est Y" frame.
+- Emojis, unless explicitly requested.
+- Decorative bold. Bold marks a key term, not one word per sentence.
+- Rule-of-three enumerations by reflex. Two often suffice, four sometimes.
+- Hedging chains ("il est possible que", "could potentially", "in some
+  cases"). Assert, or say you don't know.
+- Restating the user's question before answering it.
+- Slop vocabulary, buzzword sense: delve, explorons, plongeons, "il
+  convient de noter" / "it's worth noting", figurative paysage/landscape,
+  robuste/robust, transformer/transform. Technical senses stay allowed
+  (robustness as a review lens, a math transform).
+
+Do:
+- Vary sentence and paragraph length. A short sentence after a long one.
+- Write like speech. A sentence you cannot say aloud in one breath gets
+  cut in two.
+- A paragraph over a bullet list when prose carries it.
+
+Self-check before handing over a deliverable (text, site, feature):
+reread against these rules (plus the web rules for a site) and tell the
+user what you corrected to comply, or that nothing needed correcting.