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)

crates/adapters/http-axum/src/extractors/importing_provider.rs

@@ -8,7 +8,9 @@ use application::api_token::use_cases::authenticate_api_token;
 
 use crate::state::AppState;
 
-use super::authenticated_user::{AuthRejection, bearer_token};
+use domain::api_token::TokenScope;
+
+use super::authentication::{AuthRejection, bearer_token};
 
 pub struct ImportingProvider {
     pub user_id: UserId,
@@ -34,9 +36,13 @@ where
             secrets: app_state.api_token_secrets,
         };
 
-        let token = authenticate_api_token::execute(&presented, &deps)
+        let token = authenticate_api_token::execute(&presented, TokenScope::WriteMetrics, &deps)
             .await
-            .map_err(|_| AuthRejection::new("importing needs an api token minted in settings"))?;
+            .map_err(|_| {
+                AuthRejection::new(
+                    "importing needs an api token granting writeMetrics, minted in settings",
+                )
+            })?;
 
         Ok(Self {
             user_id: token.user_id().clone(),