Add brewing section, plan chat, roaster learning, API tokens, Swagger docs, and full backup

Brewing:
- roasted_beans + brews tables; /beans (bean management with LLM URL
  prefill) and /brews (silhouette brewer picker across immersion/
  percolation/espresso, recipe fields, auto ratio, 0-10 rating, tasting
  notes); bean remaining weight derived from logged brew doses
- Green inventory lot form also prefills from a product URL

Navigation/UX:
- Side nav is now generated from one definition in nav.js, grouped
  Roasting / Brewing / account, consistent on every page

LLM:
- 'Ask the LLM' chat drawer on the planner (stateless /api/plan-chat)
  grounded in the plan, computed ledger, learned pace, and a new
  roaster-behavior profile aggregated from uploaded .alogs
  (/api/roaster-profile: TP lag, phase RoR, median milestone temps)
- The profile also feeds roast reviews and the planner curve's fallback
  milestone temps

API platform:
- User-generated bearer tokens (rpt_…) with account-page management;
  token requests skip CSRF; hand-authored OpenAPI 3 spec at
  /api/openapi.json rendered by self-hosted Swagger UI at /api-docs
- Full-database backup export/import (admin) + per-user data export

Co-Authored-By: Claude Fable 5 <[email protected]>

server/evaluate-roast.js

@@ -59,7 +59,7 @@ function rorSegments(curve) {
 
 /** Deterministic, model-free digest of the parsed roast (+ optional plan targets). Also stored
  * alongside the model's text so the UI can show the same numbers the model was judged on. */
-export function buildRoastFacts(parsed, plan) {
+export function buildRoastFacts(parsed, plan, roasterProfile = null) {
   const curve = parsed.curve ?? [];
   const milestone = (key) => parsed.milestones?.find((m) => m.key === key) ?? null;
   const yellow = milestone("yellow");
@@ -94,6 +94,11 @@ export function buildRoastFacts(parsed, plan) {
     rorSegments: rorSegments(curve),
     parserWarnings: parsed.warnings ?? [],
     planTargets: null,
+    // How this user's machine typically behaves, learned from their previously uploaded
+    // roasts — lets the review distinguish "your roaster always lags like this" from a
+    // one-off anomaly.
+    typicalRoasterBehavior:
+      roasterProfile && roasterProfile.n > 0 ? roasterProfile : null,
   };
 
   if (plan) {
@@ -122,12 +127,12 @@ export function buildRoastFacts(parsed, plan) {
  * @param {string|null} preferredModel admin-configured "provider:id", empty/null for auto
  * @returns {Promise<object>} evaluation object (schema above + `facts`)
  */
-export async function evaluateRoast(parsed, plan = null, preferredModel = null) {
+export async function evaluateRoast(parsed, plan = null, preferredModel = null, roasterProfile = null) {
   const modelRuntime = await getModelRuntime();
   const model = await pickModel(preferredModel);
   if (!model) throw noModelError();
 
-  const facts = buildRoastFacts(parsed, plan);
+  const facts = buildRoastFacts(parsed, plan, roasterProfile);
 
   const resourceLoader = new DefaultResourceLoader({
     cwd: process.cwd(),