spa hardening, offline logging, rate limit fixes

server:
- backup exporter, auth extractors, error shapes, CONTEXT (prior work)
- spa assets served outside the rate limit via route_layer
- requests_per_second went to per_second(), which takes an interval not a
  rate: 50 meant one request per 50s once burst was spent. now converted
  properly. 15/s, burst 60

spa fixes:
- account delete cleared snake_case token keys that were never written
- refresh interceptor could retry forever
- date ranges used local day boundaries stamped +00:00
- "all" period trend plotted one page; calendar days fabricated mood 3
- chart grid invisible: hsl(var(--border)) against rgba tokens
- blob url leak, orphaned media on failed save, devtools in prod bundle
- pt-safe/safe-area-pb classes never existed

spa features:
- offline outbox: entries queue to IndexedDB, replay with backoff, only
  server refusals count against an entry
- drafts persist, quick-log sheet, diary infinite scroll + filters
- route error boundary, stale-chunk recovery, no service worker in dev

a11y + perf:
- mood picker is a radiogroup, activity picker keyboard-operable,
  text alternatives for colour/emoji, locale week start
- dark glass over the bright photo: worst case 1.4:1 -> 4.9-9.6:1
- initial payload 1095->769kB raw, 306->230kB gzip; 38 unused components
  and 5 deps dropped; fonts 218->133kB

53 tests added (43 spa, 10 server)

spa/src/hooks/use-api-tokens.ts

@@ -1,5 +1,6 @@
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { tokens } from "@/api/client"
+import type { MintApiTokenRequest } from "@/api/schema"
 
 const TOKENS = ["api-tokens"]
 
@@ -14,7 +15,7 @@ export function useMintApiToken() {
   const queryClient = useQueryClient()
 
   return useMutation({
-    mutationFn: (name: string) => tokens.mint(name),
+    mutationFn: (body: MintApiTokenRequest) => tokens.mint(body),
     onSuccess: () => queryClient.invalidateQueries({ queryKey: TOKENS }),
   })
 }